10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________

FORM 10-Q

____________________________________

(Mark One)

x Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended April 29, 2018

or

¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from             to             

Commission File Number 1-6395

____________________________________ 

SEMTECH CORPORATION

(Exact name of registrant as specified in its charter)

 ____________________________________

Delaware	95-2119684
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

200 Flynn Road, Camarillo, California, 93012-8790

(Address of principal executive offices, Zip Code)

Registrant’s telephone number, including area code: (805) 498-2111

____________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   x   No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨   (Do not check if a smaller reporting company)	Smaller reporting company	¨
Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act):    Yes  ¨   No  x

Number of shares of Common Stock, $0.01 par value per share, outstanding at May 25, 2018: 66,184,781

SEMTECH CORPORATION

INDEX TO FORM 10-Q

FOR THE QUARTER ENDED APRIL 29, 2018

PART I - FINANCIAL INFORMATION	3
ITEM 1. Financial Statements	5
ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
ITEM 3. Quantitative and Qualitative Disclosures About Market Risk	39
ITEM 4. Controls and Procedures	39
PART II – OTHER INFORMATION	40
ITEM 1. Legal Proceedings	40
ITEM 1A. Risk Factors	40
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	40
ITEM 3. Defaults Upon Senior Securities	40
ITEM 4. Mine Safety Disclosures	40
ITEM 5. Other Information	41
ITEM 6. Exhibits	41

2

Unless the context otherwise requires, the use of the terms "Semtech," "the Company," "we," "us" and "our" in this Quarterly Report on Form 10-Q refers to Semtech Corporation and its consolidated subsidiaries. This Quarterly Report on Form 10-Q  may contain references to the Company’s trademarks and to trademarks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this Quarterly Report on Form 10-Q, including logos, artwork and other visual displays, may appear without the ® or ^TM symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. We do not intend our use or display of other companies' trade names or trademarks to imply a relationship with, or endorsement or sponsorship of us by, any other company.

Special Note Regarding Forward-Looking and Cautionary Statements

This Quarterly Report on Form 10-Q contains "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, as amended, based on our current expectations, estimates and projections about our operations, industry, financial condition, performance, results of operations, and liquidity. Forward-looking statements are statements other than historical information or statements of current condition and relate to matters such as future financial performance, future operational performance, the anticipated impact of specific items on future earnings, and our plans, objectives and expectations. Statements containing words such as "may," "believe," "anticipate," "expect," "intend," "plan," "project," "estimate," "should," "will," "designed to," "projections," or "business outlook," or other similar expressions constitute forward-looking statements. Forward-looking statements involve known and unknown risks and uncertainties that could cause actual results and events to differ materially from those projected.

Potential factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to:

• fluctuation in the Company’s future results;

• downturns in the business cycle;

• rapid decline in the average selling price;

• reduced demand for the Company’s products, including due to global economic conditions and potential changes in economic policy;

• business interruptions;

• the Company’s reliance on a limited number of suppliers and subcontractors for components and materials;

• potentially insufficient liability insurance if the Company’s products are found to be defective;

• obsolete inventories as a result of changes in demand and change in life cycles for the Company’s products;

• the Company’s inability to successfully develop and sell new products;

• lengthy and expensive product qualification processes without any assurance of product sales;

• the Company’s products failing to meet industry standards;

• the Company’s inability to protect intellectual property rights;

• the Company suffering losses if its products infringe the intellectual property rights of others;

• the Company’s need to commit resources to product production prior to receipt of purchase commitments;

• increased business risk resulting from significant business with foreign customers;

• the Company’s foreign currency exposures;

• potential increased tax liabilities and effective tax rate if the Company needs to repatriate funds held by foreign subsidiaries;

• export restrictions and laws affecting the Company’s trade and investments;

• the Company's inability to adequately compete against larger, more established entities;

• increased competition due to industry consolidation;

• the loss of any one of the Company’s significant customers;

• volatility of customer demand;

• termination of a contract by a distributor;

• sales of our products on the gray market;

• the Company’s failure to maintain effective internal control over financial reporting and disclosure controls and procedures;

3

• government regulations and other standards, including those that impose operational and reporting requirements;

• the Company’s failure to comply with applicable environmental regulations;

• compliance with conflict minerals regulations;

• increase in the Company’s cost of doing business as a result of having to comply with the codes of conduct of certain of the Company’s customers and suppliers;

• changes in tax law, including effective tax rates, and review by taxing authorities;

• taxation of Company sales in non-U.S. jurisdictions;

• the Company’s limited experience with government contracting;

• potential government investigations and inquiries;

• loss of the Company’s key personnel;

• risks associated with companies the Company has acquired in the past and may acquire in the future and the Company’s ability to successfully integrate acquired businesses and benefit from expected synergies;

• the Company may be required to recognize additional impairment charges;

• loss of value of investments in entities not under our control;

• the Company may not receive accurate, complete or timely financial information from entities for which the Company is required to consolidate such information;

• the Company may be adversely affected by new accounting pronouncements;

• the Company’s ability to generate cash to service its debt obligations;

• restrictive covenants in the Company’s credit agreement which may restrict its ability to pursue its business strategies;

• the Company’s reliance on certain critical information systems for the operation of its business;

• costs associated with the Company’s indemnification of certain customers, distributors and other parties;

• the Company’s share price could be subject to extreme price fluctuations;

• the impact on the Company’s common stock price if securities or industry analysts do not publish reports about the Company’s business or adversely change their recommendations regarding the Company’s common stock;

• anti-takeover provisions in the Company’s organizational documents could make an acquisition of the Company more difficult; and

• the Company is subject to litigation risks which may be costly to defend

Additionally, forward-looking statements should be considered in conjunction with the cautionary statements contained in this Quarterly Report on Form 10-Q, including, without limitation, information under the captions "Management’s Discussion and Analysis of Financial Condition and Results of Operations" and "Risk Factors" and additional factors that accompany the related forward-looking statements in this Quarterly Report on Form 10-Q, in our Annual Report on Form 10-K for the fiscal year ended January 28, 2018 including, without limitation information under the caption "Risk Factors", in other filings with the Securities and Exchange Commission ("SEC"), and in material incorporated herein and therein by reference. In light of the significant risks and uncertainties inherent in the forward-looking information included herein that may cause actual performance and results to differ materially from those predicted, any such forward-looking information should not be regarded as representations or guarantees by the Company of future performance or results, or that its objectives or plans will be achieved, or that any of its operating expectations or financial forecasts will be realized. Reported results should not be considered an indication of future performance. Investors are cautioned not to place undue reliance on any forward-looking information contained herein, which reflect management’s analysis only as of the date hereof. Except as required by law, the Company assumes no obligation to publicly release the results of any update or revision to any forward-looking statement that may be made to reflect new information, events or circumstances after the date hereof or to reflect the occurrence of unanticipated or future events, or otherwise.

In addition to regarding forward-looking statements with caution, you should consider that the preparation of the consolidated financial statements requires us to draw conclusions and make interpretations, judgments, assumptions and estimates with respect to certain factual, legal, and accounting matters. Our financial statements might have been materially impacted if we had reached different conclusions or made different interpretations, judgments, assumptions or estimates.

4

PART I - FINANCIAL INFORMATION

ITEM 1. Financial Statements

SEMTECH CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except per share data)

(unaudited)

	Three Months Ended
	April 29, 2018			April 30, 2017
Net sales	$	130,429		$	143,802
Cost of sales	58,960			58,887
Gross profit	71,469			84,915
Operating costs and expenses:
Selling, general and administrative	41,406			34,015
Product development and engineering	26,199			25,983
Intangible amortization	6,961			6,286
Loss on disposition of business operations	—			375
Total operating costs and expenses	74,566			66,659
Operating (loss) income	(3,097		)	18,256
Interest expense, net	(2,190		)	(2,046		)
Non-operating income (expense), net	190			(632		)
(Loss) income before taxes and equity in net losses of equity method investments	(5,097		)	15,578
Provision for taxes	(17,510		)	3,757
Net income before equity in net losses of equity method investments	12,413			11,821
Equity in net losses of equity method investments	(31		)	—
Net income	$	12,382		$	11,821
Earnings per share:
Basic	$	0.19		$	0.18
Diluted	$	0.18		$	0.18
Weighted average number of shares used in computing earnings per share:
Basic	66,324			65,839
Diluted	68,195			67,376

The accompanying notes are an integral part of these unaudited consolidated financial statements.

5

SEMTECH CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(unaudited)

	Three Months Ended
	April 29, 2018			April 30, 2017
Net income	$	12,382		$	11,821
Other comprehensive income, net:
Unrealized gain on foreign currency cash flow hedges	47			183
Realized gain on foreign currency cash flow hedges	—			(53		)
Unrealized gain on convertible debt	—			750
Change in employee benefit plans	(16		)	21
Other comprehensive income, net	31			901
Comprehensive income	$	12,413		$	12,722

The accompanying notes are an integral part of these unaudited consolidated financial statements.

6

SEMTECH CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)

(unaudited)

	April 29, 2018			January 28, 2018
Assets
Current assets:
Cash and cash equivalents	$	303,349		$	307,923
Accounts receivable, less allowances of $2,710 and $9,089, respectively	65,568			53,183
Inventories	65,458			71,067
Prepaid taxes	12,874			11,809
Other current assets	20,143			17,250
Total current assets	467,392			461,232
Non-current assets:
Property, plant and equipment, net of accumulated depreciation of $184,686 and $179,604, respectively	122,469			124,586
Deferred tax assets	24,907			4,236
Goodwill	341,897			341,897
Other intangible assets, net	53,246			60,207
Other assets	88,894			93,618
TOTAL ASSETS	$	1,098,805		$	1,085,776
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	38,676		$	37,208
Accrued liabilities	54,400			60,832
Deferred revenue	4,973			12,758
Current portion - long-term debt	16,358			15,410
Total current liabilities	114,407			126,208
Non-current liabilities:
Deferred tax liabilities	15,812			14,682
Long term debt, less current portion	206,552			211,114
Other long-term liabilities	68,680			68,759
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, $0.01 par value, 250,000,000 shares authorized, 78,136,144 issued and 66,140,592 outstanding and 78,136,144 issued and 66,280,129 outstanding, respectively	785			785
Treasury stock, at cost, 11,995,552 shares and 11,856,015 shares, respectively	(268,864		)	(251,974		)
Additional paid-in capital	438,364			415,056
Retained earnings	524,238			502,346
Accumulated other comprehensive loss	(1,169		)	(1,200		)
Total stockholders’ equity	693,354			665,013
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,098,805		$	1,085,776

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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SEMTECH CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Three Months Ended
	April 29, 2018			April 30, 2017
Cash flows from operating activities:
Net income	$	12,382		$	11,821
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,453			11,301
Accretion of deferred financing costs and debt discount	136			146
Deferred income taxes	(15,614		)	3,151
Share-based compensation and warrant costs	35,516			13,286
(Gain) loss on disposition of business operations and assets	(10		)	436
Equity in net losses of equity method investments	31			—
Contingencies	—			(50		)
Corporate owned life insurance, net	(254		)	248
Changes in assets and liabilities:
Accounts receivable, net	(7,844		)	(4,471		)
Inventories	5,609			(11,292		)
Other assets	(1,098		)	3,265
Accounts payable	3,203			(4,147		)
Accrued liabilities	(6,852		)	(12,536		)
Deferred revenue	(180		)	299
Income taxes payable	(1,698		)	(3,222		)
Other liabilities	(751		)	2,124
Net cash provided by operating activities	35,029			10,359
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	27			6
Purchase of property, plant and equipment	(4,935		)	(5,175		)
Purchase of investments	(5,490		)	(4,750		)
Proceeds from sale of investments	1,601			—
Net cash used in investing activities	(8,797		)	(9,919		)
Cash flows from financing activities:
Payments of term loans	(3,750		)	(3,750		)
Payment for employee share-based compensation payroll taxes	(5,769		)	(3,467		)
Proceeds from exercise of stock options	4,038			1,159
Repurchase of outstanding common stock	(25,325		)	(9,966		)
Net cash used in financing activities	(30,806		)	(16,024		)
Net decrease in cash and cash equivalents	(4,574		)	(15,584		)
Cash and cash equivalents at beginning of period	307,923			297,134
Cash and cash equivalents at end of period	$	303,349		$	281,550
Supplemental disclosure of cash flow information
Income taxes paid	$	648		$	1,869
Interest paid	$	1,929		$	1,809
Non-cash items
Capital expenditures in accounts payable	$	2,054		$	1,511
Convertible debt	$	—		$	2,175

The accompanying notes are an integral part of these unaudited consolidated financial statements.

8

SEMTECH CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1: Organization and Basis of Presentation

Nature of Business

Semtech Corporation (together with its consolidated subsidiaries, the "Company" or "Semtech") is a global supplier of analog and mixed-signal semiconductor products. The end customers for the Company’s products are primarily original equipment manufacturers ("OEMs") that produce and sell electronics.

The Company designs, develops and markets a wide range of products for commercial applications, the majority of which are sold into the enterprise computing, communications, high-end consumer and industrial end-markets.

Enterprise Computing: datacenters, passive optical networks, desktops, notebooks, servers, monitors, printers and other computer peripherals.

Communications: base stations, optical networks, carrier networks, switches and routers, cable modems, wireless LAN and other communication infrastructure equipment.

High-End Consumer: handheld products, smartphones, wireless charging, set-top boxes, digital televisions, tablets, digital video recorders and other consumer equipment.

Industrial: video broadcast equipment, Video-over-IP solutions, automated meter reading, Internet of Things ("IoT"), smart grid, wireless charging, military and aerospace, medical, security systems, automotive, industrial and home automation and other industrial equipment.

Fiscal Year

The Company reports results on the basis of 52 and 53 week periods and ends its fiscal year on the last Sunday in January. The other quarters generally end on the last Sunday of April, July and October. All quarters consist of 13 weeks except for one 14-week period in the fourth quarter of 53-week years. The first quarter of fiscal years 2019 and 2018 each consisted of 13 weeks.

Principles of Consolidation

The accompanying interim unaudited consolidated financial statements have been prepared by the Company, in accordance with accounting principles generally accepted in the United States ("GAAP") and on the same basis as the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended January 28, 2018. In the opinion of the Company, these interim unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly, in all material respects, the financial position of the Company for the interim periods presented. All intercompany balances have been eliminated. Certain information and footnote disclosures normally included in annual consolidated financial statements have been condensed or omitted pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Because the interim unaudited consolidated financial statements do not include all of the information and notes required by GAAP for a complete set of consolidated financial statements, they should be read in conjunction with the audited consolidated financial statements and notes included in the Company's Annual Report on Form 10-K for the year ended January 28, 2018. The results reported in these interim unaudited consolidated financial statements should not be regarded as indicative of results that may be expected for any subsequent period or for the entire year.

The Company’s interim unaudited consolidated statements of income are referred to herein as the "Statements of Income." The Company’s interim unaudited consolidated balance sheets are referred to herein as the "Balance Sheets" and interim unaudited consolidated statements of cash flows as the "Statements of Cash Flows."

Segment Information

The Company’s Chief Executive Officer ("CEO") has been identified as the Chief Operating Decision Maker ("CODM") as defined by guidance regarding segment disclosures (see Note 13 for further discussion). Prior to the first quarter of fiscal year 2019, the Company had four operating segments. However as of April 29, 2018, the Company identified three operating segments that aggregate into one reportable segment, the Semiconductor Products Group.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Recent Accounting Standards Adopted

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Accounting Standards Codification ("ASC") 606), which requires an entity to recognize revenue from the transfer of control of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance addresses, in particular, contracts with more than one performance obligation, as well as the accounting for some costs to obtain or fulfill a contract with a customer, and provides for additional disclosures with respect to revenues and cash flows arising from contracts with customers.

The Company adopted the standard, effective January 29, 2018, using the modified retrospective transition method which resulted in an adjustment to retained earnings for the cumulative effect of applying the standard to all contracts not completed as of the adoption date. The primary change associated with the adoption relates to the Company’s sales to distributors with return or price adjustment rights where the Company will no longer defer revenue until the resale by the distributor to the end customer, but rather, will record revenue at the time control transfers to the distributor. The Company estimated the effects of returns and allowances provided to these distributors. Upon adoption, including the effect of income taxes, opening retained earnings as of January 29, 2018 increased by $11.1 million net, as a result of these changes. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

In October 2016, the FASB issued ASU No. 2016-16, Intra-Entity Asset Transfers Other Than Inventory (Topic 740). This accounting standard update is aimed at recognizing the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This removes the exception to postpone the recognition of income tax consequences of intra-entity transfers until the asset has been sold to an outside party. In the first quarter of 2019, the Company adopted ASU 2016-16 using a modified retrospective transition method, resulting in a $1.8 million decrease in retained earnings, a $3.7 million net increase in deferred income tax assets, and a $5.5 million decrease in pre-paid taxes.

Accounting Guidance Issued but Not Adopted as of April 29, 2018

In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815). This standard addresses narrow issues identified as a result of the complexity associated with applying GAAP for certain financial instruments with characteristics of liabilities and equity. Part I addresses the complexity of accounting for certain financial instruments with down round features. Part II addresses the difficulty of navigating Topic 480, Distinguishing Liabilities from Equity, because of the existence of pending content in the ASC that results from the indefinite deferral of accounting requirements concerning mandatorily redeemable financial instruments of certain non-public entities and certain mandatorily redeemable non-controlling interests. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this pronouncement to have a material impact on the Company’s consolidated financial statements.

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815). The new standard is designed to refine and expand hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application of hedge accounting guidance. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption, including adoption in an interim period, is permitted. The Company is currently evaluating the impact this ASU will have on its consolidated condensed financial statements and disclosures.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which will require that substantially all leases be recognized by lessees on their balance sheets as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. The new standard also will result in enhanced quantitative and qualitative disclosures, including descriptions of significant judgments made by management, to provide greater insight into the extent of expense recognized and expected to be recognized from existing leases. The standard requires modified retrospective adoption and will be effective for the Company as of the beginning of fiscal year 2020. The Company expects the valuation of right of use assets and lease liabilities, previously described as operating leases, to be the present value of the Company's forecasted future lease commitments. The Company is continuing to assess the overall impacts of the new standard, including the discount rate to be applied in these valuations.

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Note 2: Revenue

The Company derives its revenue primarily from the sale of semiconductor products into various end markets. Revenue is recognized when control of these products is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for these products. Control is generally transferred when products are shipped and, to a lesser extent, when the products are delivered. Recovery of costs associated with product design and engineering services are recognized during the period in which services are performed and are reported as a reduction to product development and engineering expense. Historically, these recoveries have not exceeded the cost of the related development efforts. The Company includes revenue related to granted technology licenses as part of "Net sales." Historically, revenue from these arrangements has not been significant though it is part of its recurring ordinary business.

The Company determines revenue recognition through the following five steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligations in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligations in the contract

• Recognition of revenue when, or as, performance obligations are satisfied

The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable.

The Company’s revenue contracts generally represent a single performance obligation to sell its products to trade customers. Net sales reflect the transaction prices for contracts, which include units shipped at selling prices reduced by variable consideration. Determination of variable consideration requires judgment by the Company. Variable consideration includes expected sales returns and other price adjustments. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. Sales returns are generally accepted at the Company’s discretion or from distributors with such rights. The Company’s contracts with trade customers do not have significant financing components or non-cash consideration. The Company records net sales excluding taxes collected on its sales to its trade customers.

The Company provides an assurance type warranty which is typically not sold separately and does not represent a separate performance obligation. The Company’s payment terms are generally aligned with shipping terms.

The following presents the amounts by which financial statement line items were affected in the current period due to the adoption of ASC 606 as compared with the guidance that was in effect before the change:

	Three Months Ended
Statements of Income	April 29, 2018
(in thousands, except per share amounts)	Increase/(decrease)
Net sales	$	4,462
Cost of sales	1,016
Provision for taxes	724
Net income	2,722
Earnings per share:
Basic	$	0.04
Diluted	$	0.04

Balance Sheets	April 29, 2018
(in thousands)	Increase/(decrease)
Deferred revenue	$	(15,737	)

Excludes line items that were not materially affected by the Company's adoption of ASC 606. The adoption had no impact to total net cash provided by or used in operating, investing or financing activities in the Statements of Cash Flows.

10

Contract Modifications:

If a contract is modified, which does not normally occur, changes in contract specifications and requirements must be accounted for. The Company considers contract modifications to exist when the modification either creates new or changes the existing enforceable rights and obligations. Most of the Company’s contract modifications are to distributor agreements for adding new goods or services that are considered distinct from the existing contract and the change in contract price reflects the standalone selling price of the distinct service.

Disaggregated Revenue:

The Company disaggregates revenue from contracts with customers by types of products and geography, as it believes it best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 13: Segment Information” for further information on revenues by product line and geographic region.

Contract Balances:

Accounts receivable represents the Company’s unconditional right to receive consideration from its customer. Contract assets consist of the Company’s right to consideration in exchange for goods or services that the Company has transferred to a customer when that right is conditioned on something other than the passage of time. ASC 606 also requires an entity to present a revenue contract as a contract liability in instances when a customer pays consideration, or an entity has a right to an amount of consideration that is unconditional (e.g. receivable), before the entity transfers a good or service to the customer. The opening and closing contract asset and contract liability balances are not material.

There were no impairment losses recognized on the Company’s accounts receivable and contract assets during the three months ended April 29, 2018. There were no significant changes in the contract assets and the contract liabilities during the three months ended April 29, 2018.

Practical Expedients:

Unsatisfied Performance Obligations: Because all of the Company’s performance obligations relate to contracts with a duration of less than one year, the Company elected to apply the optional exemption provided in ASC 606 and, therefore, is not required to disclose the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period.

Contract Costs: All incremental customer contract acquisition costs are expensed as they are incurred as the amortization period of the asset that the Company otherwise would have recognized is one year or less in duration.

Significant Financing Component: The Company does not adjust the promised amount of consideration for the effects of a significant financing component as the Company expects, at contract inception, that the period between when the Company transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less.

Sales Tax Exclusion from the Transaction Price: The Company excludes from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the Company from the customer.

Shipping and Handling Activities: The Company accounts for shipping and handling activities performed after a customer obtains control of the good as activities to fulfill the promise to transfer the good.

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Note 3: Earnings per Share

The computation of basic and diluted earnings per common share was as follows:

	Three Months Ended
(in thousands, except per share amounts)	April 29, 2018		April 30, 2017
Net income	$	12,382	$	11,821
Weighted average common shares outstanding - basic	66,324		65,839
Dilutive effect of stock options and restricted stock units	1,871		1,537
Weighted average common shares outstanding - diluted	68,195		67,376
Basic earnings per common share	$	0.19	$	0.18
Diluted earnings per common share	$	0.18	$	0.18
Anti-dilutive shares not included in the above calculations	146		686

Basic earnings per common share is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding during the reporting period. Diluted earnings per common share incorporates the incremental shares issuable, calculated using the treasury stock method, upon the assumed exercise of non-qualified stock options, the vesting of restricted stock units and performance unit awards if the conditions have been met.

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Note 4: Share-Based Compensation

Financial Statement Effects and Presentation. The following table summarizes pre-tax share-based compensation included in the Statements of Income for the three months ended April 29, 2018 and April 30, 2017.

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Revenue offset	$	21,501	$	5,280
Cost of sales	328		564
Selling, general and administrative	11,462		5,557
Product development and engineering	2,225		1,885
Share-based compensation	$	35,516	$	13,286
Net change in share-based compensation capitalized into inventory	$	—	$	(414	)

Warrant. On October 5, 2016, the Company issued a warrant (the "Warrant") to Comcast Cable Communications Management LLC ("Comcast") to purchase up to 1,086,957 shares (the "Warrant Shares") of the common stock of Semtech Corporation. The Warrant was issued by the Company to Comcast in connection with an agreement between the parties regarding the intended trial deployment by Comcast of a low-power wide-area Network ("LPWAN") in the United States, based on the Company’s LoRa® devices and wireless radio frequency technology. The Warrant is accounted for as equity and the cost is recognized as an offset to net sales over the respective performance period. The Warrant consists of five performance tranches. The cost associated with each tranche has been recognized based on the fair value at each reporting date until vesting which is the measurement date. On April 27, 2018, the Company accelerated the vesting of the remaining 586,956 unvested shares from the Warrant, resulting in the full recognition of the remaining costs to be recognized for the Warrant. For the three-month period ended April 29, 2018, the revenue offset reflects the cost associated with the Warrant of $21.5 million, including $15.9 million related to the acceleration. The Warrant is now fully-vested and exercisable for a total of 869,565 shares, with no additional costs to be recognized in future periods.

Performance-Based Restricted Stock Units. The Company grants performance-based restricted stock units to select employees. The performance-based restricted stock units are valued as of the measurement date and expense is recognized on a straight line basis for the awards expected to vest based on the probability of attainment of the performance condition for each separately vesting portion of the award.

In the first quarter of fiscal year 2019, the Company granted 200,442 performance-based restricted stock units that have a pre-defined market condition and a service condition that are accounted for as equity awards. The market condition is determined based upon the Company’s total stockholder return ("TSR") benchmarked against the TSR of the S&P SPDR Semiconductor ETF (NYSE:XSD) over a one, two and three year period (one-third of the awards vesting each performance period). The fiscal year 2019 award recipients must be employed for the entire performance period and be an active employee at the time of vesting of the awards. The Company used a Monte Carlo simulation to determine the grant-date fair value for these awards, which takes into consideration the possible outcomes pertaining to the TSR market condition. The grant-date fair value per unit of the awards granted in the first quarter of fiscal year 2019 for each one, two and three year performance period is $33.02, $34.85 and $36.52, respectively.

Award Modifications. During the first quarter of fiscal year 2019, the Company modified the terms of 159,000 fully vested shares held by 8 employees. As a result of the modification, additional compensation cost of $2.8 million was recognized during the first quarter of fiscal year 2019.

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Note 5: Investments

Cash and cash equivalents includes investments in money market funds that are valued based on the net asset value of the funds. The cash equivalents consist primarily of money market funds that are Level 1 measurements. The investments in these funds were $30.0 million and $0.0 millionas of April 29, 2018 and January 28, 2018, respectively.

The following table summarizes the Company’s available-for-sale securities:

	April 29, 2018						January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Convertible debt	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—
Total other assets	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—

The following table summarizes the maturities of the Company’s available-for-sale securities:

	April 29, 2018				January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	2,000	$	2,000	$	1,960	$	1,960
After 1 year through 5 years	500		500		—		—
Total investments	$	2,500	$	2,500	$	1,960	$	1,960

The Company's available-for-sales securities consisted of investments in convertible debt instruments issued by privately-held companies and is included in "Other current assets" within the Balance Sheets.

The Company currently has a $30.0 million investment, which includes $3.0 million of restricted deposits, in a private entity that is accounted for at cost and included in "Other assets" within the Balance Sheets. As part of its investment, the Company received a call option that allows the Company to purchase all of the outstanding equity of the entity. The call option, which was out-of-the-money at inception, is exercisable until June 30, 2018.

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Note 6: Fair Value Measurements

Instruments Measured at Fair Value on a Recurring Basis

Financial assets and liabilities measured and recorded at fair value on a recurring basis were presented within the Company's Balance Sheets as follows:

	Fair Value as of April 29, 2018								Fair Value as of January 28, 2018
(in thousands)	Total		(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)
Financial assets:
Cash equivalents	$	30,000	$	30,000	$	—	$	—	$	—	$	—	$	—	$	—
Derivative financial instruments	64		—		64		—		—		—		—		—
Convertible debt	2,500		—		—		2,500		1,960		—		—		1,960
Total financial assets	$	32,564	$	30,000	$	64	$	2,500	$	1,960	$	—	$	—	$	1,960
Financial liabilities:
AptoVision Earn-out	$	21,000	$	—	$	—	$	21,000	$	21,000	$	—	$	—	$	21,000
Cycleo Earn-out	668		—		—		668		668		—		—		668
Total financial liabilities	$	21,668	$	—	$	—	$	21,668	$	21,668	$	—	$	—	$	21,668

During the three months ended April 29, 2018, the Company had no transfers of financial assets or liabilities between Level 1, Level 2 or Level 3. As of April 29, 2018 and January 28, 2018, the Company had not elected the fair value option for any financial assets and liabilities for which such an election would have been permitted.

The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Foreign currency forward contracts are valued using readily available foreign currency forward and interest rate curves. The fair value of each contract is determined by comparing the contract rate to the forward rate and discounting to the present value. Contracts in a gain position are recorded in the Balance Sheets within the caption "Other current assets" and the value of contracts in a loss position are recorded within the caption "Accrued liabilities" within the Balance Sheets. Please see Note 16 for further discussion of the Company’s derivative instruments.

The convertible debt is valued using probability weighted cash flows (Level 3 inputs).

The AptoVision Earn-out liability is valued utilizing estimates of annual revenue, adjusted earnings and product development targets (Level 3 inputs) through July 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Cycleo Earn-out liability (see Note 11) is valued utilizing estimates of annual revenue and operating income (Level 3 inputs) through April 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Company measures contingent earn-out liabilities at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy. The Company uses a Monte Carlo valuation method as a valuation technique to determine the value of the earn-out liability. The significant unobservable inputs used in the fair value measurements are revenue projections over the earn-out period, and the probability outcome percentages assigned to each scenario. Significant increases or decreases to either of these inputs in isolation would result in a significantly higher or lower liability, with a higher liability capped by the contractual maximum of the contingent earn-out obligation. Ultimately, the liabilities will be equivalent to the amount paid, and the difference between the fair value estimate and amount paid will be recorded in earnings. For the Cycleo Earn-out and AptoVision Earn-out, these companies have business profiles comparable to a start-up company. Accordingly, their respective revenue projections are subject to significant revisions. This characteristic can result in volatile changes to the measurement of fair value for a given earn-out.

The Company reviews and re-assesses the estimated fair value of contingent consideration on a recurring basis, and the updated fair value could differ materially from the previous estimates. Changes in the estimated fair value of the Company’s contingent earn-out liabilities related to the time component of the present value calculation are reported in "Interest expense" within the Statements of Income. Adjustments to the estimated fair value related to changes in all other unobservable inputs are reported in operating income.

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A reconciliation of the change in the earn-out liability during the three months ended April 29, 2018 is as follows:

(in thousands)	AptoVision		Cycleo		Total
Balance at January 28, 2018	$	21,000	$	668	$	21,668
Changes in the fair value of contingent earn-out obligations	—		—		—
Current acquisitions	—		—		—
Payments	—		—		—
Balance as of April 29, 2018	$	21,000	$	668	$	21,668

Instruments Not Recorded at Fair Value on a Recurring Basis

Some of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate fair value due to their liquid or short-term nature. Such financial assets and financial liabilities include: cash and cash equivalents, net receivables, certain other assets, accounts payable, accrued expenses, accrued personnel costs, and other current liabilities.

The Company’s long-term debt is not recorded at fair value on a recurring basis, but is measured at fair value for disclosure purposes. The fair value of the Company’s Term Loans (as defined in Note 9) is $127.5 million and $131.3 million as of April 29, 2018 and January 28, 2018, respectively. The fair value of the Company's Revolving Commitments (as defined in Note 9) is$97.0 million as of both April 29, 2018 and January 28, 2018, respectively. These are based on Level 2 inputs which are derived from transactions with similar amounts, maturities, credit ratings and payment terms.

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis

The Company reduces the carrying amounts of its goodwill, intangible assets, long-lived assets and non-marketable equity securities to fair value when held for sale or determined to be impaired.

For its investment in non-marketable equity interests, the Company has not identified events or changes in circumstances that may have a significant adverse effect on the fair value of its equity investments during the first three months of fiscal year 2019.

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Note 7: Inventories

Inventories, consisting of material, material overhead, labor, and manufacturing overhead, are stated at the lower of cost (first-in, first-out) or market and consist of the following:

(in thousands)	April 29, 2018		January 28, 2018
Raw materials	$	1,583	$	1,651
Work in progress	42,078		46,884
Finished goods	21,797		22,532
Inventories	$	65,458	$	71,067

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Note 8: Goodwill and Intangible Assets

Goodwill – Changes in the carrying amount of goodwill by applicable reporting unit were as follows:

(in thousands)	Signal Integrity		Wireless and Sensing		Total
Balance at January 28, 2018	$	274,085	$	67,812	$	341,897
Additions	—		—		—
Balance at April 29, 2018	$	274,085	$	67,812	$	341,897

As a result of the realignment of its operating segments, during the first quarter of fiscal year 2019, the Company combined the Wireless and Sensing and the Power and High-Reliability reporting units (see Note 13). Goodwill of $49.4 million related to the Power and High-Reliability reporting unit which was previously a separate reporting unit is now included in the Wireless and Sensing reporting unit’s goodwill balance. The reporting units are the same as the operating segments which are part of a single reportable segment. The difference between the fair value and the carrying amount of these reporting units is one of several factors the Company will consider before reaching its conclusion about whether to perform the first step of the goodwill impairment test.

Purchased Intangibles – The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions, which continue to be amortized:

		April 29, 2018							January 28, 2018
(in thousands)	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core technologies	5-8 years	$	164,930	$	(121,156	)	$	43,774	$	164,930	$	(115,628	)	$	49,302
Customer relationships	3-10 years	34,031		(26,859		)	7,172		34,031		(25,426		)	8,605
Total finite-lived intangible assets		$	198,961	$	(148,015	)	$	50,946	$	198,961	$	(141,054	)	$	57,907

Amortization expenses recorded in the Statements of Income for each period were as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Core technologies	$	5,528	$	5,186
Customer relationships	1,433		1,100
Total amortization expense	$	6,961	$	6,286

The following table sets forth the Company’s indefinite-lived intangible assets resulting from additions to IPR&D:

(in thousands)	Net Carrying Value
Value at January 28, 2018	$	2,300
In-process research and development through acquisitions	—
Value at April 29, 2018	$	2,300

The Company reviews indefinite-lived intangible assets for impairment as of November 30, each year, by comparing the carrying amount of the asset to the future discounted cash flows that asset is expected to generate.

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Note 9: Credit Facilities

On November 15, 2016 (the "Closing Date"), Semtech Corporation, with certain of its domestic subsidiaries as guarantors (the "Guarantors"), entered into the amended and restated credit facility with the lenders party thereto ("Lenders"), and HSBC Bank USA, National Association, as administrative agent and as swing line lender and letter of credit issuer (the "Credit Agreement"). The Credit Agreement amended and restated the Company's prior credit agreement. The Company accounted for the Credit Agreement as a debt modification. Pursuant to the Credit Agreement, the Lenders provided the Company with senior secured first lien credit facilities in an aggregate principal amount of $400.0 million, consisting of term loans in an aggregate initial principal amount of $150.0 million (the "Term Loans") and revolving credit commitments in an aggregate principal amount of $250.0 million (the "Revolving Commitments"). Up to $40.0 million of the Revolving Commitments may be used to obtain letters of credit, up to $25.0 million of the Revolving Commitments may be used to obtain swing line loans, and up to $40.0 million of the Revolving Commitments may be used to obtain revolving loans and letters of credit in certain currencies other than U.S. Dollars. Each of the Term Loans and the Revolving Commitments is scheduled to mature on November 12, 2021. As of April 29, 2018, there were no amounts outstanding under the letters of credit, swing line loans and alternative currency sub facilities.

All of the proceeds of the Credit Agreement were used to repay in full all of the obligations outstanding under the Company’s prior credit facility and to pay transaction costs in connection with such refinancing. As of November 15, 2016, $247.0 million of borrowings were outstanding under the Credit Agreement, consisting of $150.0 million in term loans and $97.0 million in revolving loans, and there was $153.0 million of undrawn revolving commitments. The proceeds of the revolving credit facility may be used by the Company for capital expenditures, permitted acquisitions, permitted dividends, working capital and general corporate purposes.

The Credit Agreement provides that, subject to certain conditions, the Company may request the establishment of one or more additional term loan facilities and/or increases to the Revolving Commitments in an aggregate principal amount not to exceed the sum of (a) $150.0 million and (b) the aggregate principal amount of all voluntary prepayments of term loans made prior to the date of incurrence of such additional term loan facilities and/or increases to the revolving commitments. The Lenders will have an opportunity to, but are not required to participate in the additional term loan facilities and/or revolving commitment increases. If the Lenders do not agree to provide such incremental facilities, the Company may request such additional and/or increased facilities from additional lenders.

Interest on loans made under the Credit Agreement in U.S. Dollars accrues, at the Company's option, at a rate per annum equal to (1) the Base Rate (as defined below) plus a margin ranging from 0.25% to 1.25% depending upon the Company's consolidated leverage ratio or (2) LIBOR (determined with respect to deposits in U.S. Dollars) for an interest period to be selected by the Company plus a margin ranging from 1.25% to 2.25% depending upon the Company's consolidated leverage ratio (such margin, the "Applicable Margin"). The "Base Rate" is equal to a fluctuating rate equal to the highest of (a) the prime rate of the administrative agent, (b) ½ of 1% above the federal funds effective rate published by the Federal Reserve Bank of New York and (c) one-month LIBOR (determined with respect to deposits in U.S. Dollars) plus 1%. Interest on loans made under the Credit Agreement in alternative currencies accrues at a rate per annum equal to LIBOR (determined with respect to deposits in the applicable alternative currency) (other than loans made in Canadian Dollars, for which a special reference rate for Canadian Dollars applies) for an interest period to be selected by the Company plus the Applicable Margin.

Commitment fees on the unused portion of the revolving commitments accrue at a rate per annum ranging from 0.20% to 0.45% depending upon the Company's consolidated leverage ratio. With respect to letters of credit, the Company will pay the administrative agent, for the account of the lenders under the revolving credit facility, letter of credit participation fees at a rate per annum equal to the applicable margin then in effect with respect to LIBOR-based loans under the revolving commitments on the face amount of all outstanding letters of credit. The Company also will pay HSBC Bank USA, N.A., as the issuing bank, a fronting fee for each letter of credit issued under the Credit Agreement at a rate equal to 0.125% per annum based on the maximum amount available to be drawn under each such letter of credit, as well as its customary documentation fees.

All obligations of the Company under the Credit Agreement are unconditionally guaranteed by each of the Guarantors, which currently consist of all of the direct and indirect domestic subsidiaries of Semtech Corporation. Semtech Corporation and the Guarantors have also pledged substantially all of their assets, including sixty-five percent (65.0%) of such Guarantor's equity interest in direct non-U.S. subsidiaries, to secure their obligations under the Credit Agreement, including the Company's owned real property located in Camarillo, California.

The outstanding principal balance of the Term Loans is subject to repayment in quarterly installments. No amortization is required with respect to the revolving credit facility. The Company may voluntarily prepay borrowings under the Credit Agreement at any time and from time to time, without premium or penalty, other than customary "breakage costs" and fees for LIBOR-based loans.

The Term Loans are required to be prepaid using the proceeds of certain dispositions of assets and receipt of insurance proceeds, subject to agreed-upon thresholds and exceptions and customary reinvestment rights.

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The Credit Agreement contains customary covenants, including limitations on Company’s ability to, among other things, incur indebtedness, create liens on assets, engage in certain fundamental corporate changes, make investments, sell or otherwise dispose of assets, repurchase stock, pay dividends or make similar distributions, engage in certain transactions with affiliates and make capital expenditures. In addition, the Company must comply with the following financial covenants, tested at the end of each fiscal quarter on a trailing four-quarter basis: (i) a minimum consolidated interest coverage ratio of 3.00 to 1.00 and (ii) a maximum consolidated leverage ratio of 3.00 to 1.00 provided that, such maximum consolidated leverage ratio may be increased to 3.25 to 1.00 or 3.50 to 1.00, as applicable, for the four consecutive fiscal quarters ending on or after the date of consummation of a permitted acquisition which constitutes a "Material Acquisition" under the Credit Agreement, subject to the satisfaction of certain conditions. As of April 29, 2018, the Company was in compliance with all financial covenants.

The Credit Agreement also contains customary provisions pertaining to events of default. If any event of default occurs, the principal, interest, and any other monetary obligations on all the then outstanding amounts can become due and payable immediately by action of the administrative agent acting upon the instructions of or with the consent of the Lenders representing more than 50% of the revolving commitments and outstanding term loans or automatically upon the occurrence of certain bankruptcy events related to the Company.

As of April 29, 2018, the interest rates payable on both the Term Loans and the Revolving Commitments was 3.51%.

Scheduled maturities of current and long-term Term Loans are as follows:

(in thousands)
Fiscal Year Ending:
2019	$	12,188
2020	18,750
2021	19,687
2022	76,875
Total debt	$	127,500

As of April 29, 2018, we had $153.0 million of unused borrowing capacity under the Revolving Commitments, after deducting $97.0 million for draw down on the Revolving Commitments, which is due on or before November 12, 2021.

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Note 10: Income Taxes

The Company’s effective tax rate differs from the statutory federal income tax rate of 21% primarily due to regional mix of income and a partial release of the valuation allowance in the U.S. The valuation allowance was released in the current quarter as a result of the Company obtaining the information necessary to evaluate the impact of the Global Intangible Low-Taxed Income (“GILTI”) provisions, enacted as part of the Tax Cuts and Jobs Act (“Tax Act”) on December 22, 2017. This item was left open under Staff Accounting Bulletin 118 (“SAB 118”) in the financial statements for the year ended January 28, 2018 and the Company has now made a reasonable estimate based on the most current information available.

The Tax Act made significant changes to U.S. income tax laws, including transitioning from a worldwide tax system to a territorial tax system. This change in the U.S. international tax system included the introduction of several new tax regimes that are effective as of January 1, 2018, including the GILTI provisions. The GILTI provisions effectively tax the foreign earnings of U.S. multinational companies at 10.5%, half the current corporate tax rate. During the three months ended April 29, 2018, the Company finalized its analysis regarding the interplay of the foreign tax credits associated with this income, which are allowed against the U.S. tax liability generated as a result of the GILTI provision, and the potential impact on the related valuation allowance. As a result, the Company recorded a tax benefit of $15.8 million related to the reduction of the valuation allowance on certain U.S. deferred tax assets generated prior to fiscal year 2019.

While management believes the provisional amounts recorded during the three months ended April 29, 2018 and the

year ended January 28, 2018 represent reasonable estimates of the ultimate impact U.S. tax reform will have on the

Company's consolidated financial statements, it is possible the Company may continue to materially adjust these

amounts for related administrative guidance, notices, implementation regulations, potential legislative amendments and

interpretations as the Act continues to evolve. These adjustments could have an impact on the Company's tax assets

and liabilities, effective tax rate, net income and earnings per share.

The Company uses a two-step approach to recognize and measure uncertain tax positions ("UTP"). The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (before federal impact of state items) is as follows:

(in thousands)
Balance at January 28, 2018	$	16,059
Additions based on tax positions related to the current year	733
Balance as of April 29, 2018	$	16,792

Included in the balance of gross unrecognized tax benefits at April 29, 2018 and January 28, 2018, are $4.5 million and 3.9 million, respectively, of net tax benefits (after federal impact of state items), that, if recognized, would impact the effective tax rate, prior to consideration of any required valuation allowance.

The liability for UTP is reflected within the Balance Sheets as follows:        

(in thousands)	April 29, 2018		January 28, 2018
Deferred tax assets - non-current	$	12,252	$	12,135
Other long-term liabilities	4,540		3,924
Total accrued taxes	$	16,792	$	16,059

The Company’s policy is to include net interest and penalties related to unrecognized tax benefits within the "Provision for taxes" in the Statements of Income.

Tax years prior to 2013 (the Company’s fiscal year 2014) are generally not subject to examination by the U.S. Internal Revenue Service ("IRS") except for items involving tax attributes that have been carried forward to tax years whose statute of limitations remains open. For state returns, the Company is generally not subject to income tax examinations for calendar years prior to 2012 (the Company’s fiscal year 2013). The Company has a significant tax presence in Switzerland for which Swiss tax filings have been examined through fiscal year 2017. The Company is also subject to routine examinations by various foreign tax jurisdictions in which it operates. The Company believes that adequate provisions have been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with the Company's expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs.

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The Company’s regional income from continuing operations before taxes and equity in net losses of equity method investments is as follows:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Domestic	$	(7,700	)	$	(4,167	)
Foreign	2,603			19,745
Total	$	(5,097	)	$	15,578

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Note 11: Commitments and Contingencies

In accordance with accounting standards regarding loss contingencies, the Company accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable and the amount can be reasonably estimated. The Company also discloses the amount accrued and the amount of a reasonably possible loss in excess of the amount accrued, if such disclosure is necessary for its consolidated financial statements not to be misleading. The Company does not record liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated, or when the liability is believed to be only reasonably possible or remote. The Company evaluates, at least quarterly, developments in its legal matters that could affect the amount of liability that has been previously accrued, and makes adjustments as appropriate. Significant judgment is required to determine both probability and the estimated amount. The Company may be unable to estimate a possible loss or range of possible loss due to various reasons, including, among others: (i) if the damages sought are indeterminate; (ii) if the proceedings are in early stages, (iii) if there is uncertainty as to the outcome of pending appeals, motions or settlements, (iv) if there are significant factual issues to be determined or resolved, and (v) if there are novel or unsettled legal theories presented. In such instances, there is considerable uncertainty regarding the ultimate resolution of such matters, including a possible eventual loss, if any.

Because the outcomes of litigation and other legal matters are inherently unpredictable, the Company’s evaluation of legal matters or proceedings often involves a series of complex assessments by management about future events and can rely heavily on estimates and assumptions. While the consequences of certain unresolved matters and proceedings are not presently determinable, and an estimate of the probable and reasonably possible loss or range of loss in excess of amounts accrued for such proceedings cannot be reasonably made, an adverse outcome from such proceedings could have a material adverse effect on the Company’s earnings in any given reporting period. However, in the opinion of management, after consulting with legal counsel, any ultimate liability related to current outstanding claims and lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company’s consolidated financial statements, as a whole. However, legal matters are inherently unpredictable and subject to significant uncertainties, some of which are beyond the Company’s control.

As such, even though the Company intends to vigorously defend itself with respect to its legal matters, there can be no assurance that the final outcome of these matters will not materially and adversely affect the Company’s business, financial condition, operating results, or cash flows.

From time to time, the Company is involved in various claims, litigation, and other legal actions that are normal to the nature of its business, including with respect to IP, contract, product liability, employment, and environmental matters. In the opinion of management, after consulting with legal counsel, any ultimate liability related to current outstanding claims and lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company’s consolidated financial statements, as a whole.

The Company’s currently pending legal matters of note are discussed below:

Environmental Matters

The Company vacated a former facility in Newbury Park, California in 2002, but continues to address groundwater and soil contamination at the site.

The Company’s efforts to address site conditions have been at the direction of the Los Angeles Regional Water Quality Control Board (“RWQCB”). In October 2013, an order was issued including a scope of proposed additional site work, monitoring, and proposed remediation activities. The Company filed appeals of the October 2013 order seeking reconsideration by the RWQCB and review by the State Water Resources Control Board ("SWRCB") of the removal of two other potentially responsible parties, and seeking clarification of certain other factual findings. In April 2015, the RWQCB denied the Company’s request to name the two other potentially responsible parties to the order, but did correct certain findings of fact identified by the Company in its petition for reconsideration. The SWRCB has not yet ruled on the Company’s petition for review of the RWQCB’s action as the petition was filed with a request it be held in abeyance.

The Company has been complying with RWQCB orders and direction, and is implementing an approved remedial action plan (prepared by an environmental firm retained by the Company) addressing the cleanup of soil, groundwater, and soil vapor at the site.

The Company has accrued liabilities where it is probable that a loss will be incurred and the cost or amount of loss can be reasonably estimated. Based on the latest determinations by the RWQCB and the most recent actions taken pursuant to the remedial action plan, the Company continues to estimate the range of probable loss between $4.1 million and $7.2 million.Given the uncertainties associated with environmental assessment and the remediation activities, the Company is unable to determine a best estimate within the range of loss. Therefore, the Company has recorded the minimum amount of probable loss. These estimates could change as a result of changes in planned remedial actions, further actions from the regulatory agency, remediation technology, and other factors.

Indemnification

The Company has entered into agreements with its current and former executives and directors indemnifying them against certain liabilities incurred in connection with the performance of their duties. The Company’s Certificate of Incorporation and Bylaws contain comparable indemnification obligations with respect to the Company’s current directors and employees.

Product Warranties

The Company’s general warranty policy provides for repair or replacement of defective parts. In some cases, a refund of the purchase price is offered. In certain instances the Company has agreed to other or additional warranty terms, including indemnification provisions.

The product warranty accrual reflects the Company’s best estimate of probable liability under its product warranties. The Company accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified issues based on historical experience. Historically, warranty expense has been immaterial to the Company’s consolidated financial statements.

Earn-out Liability

Pursuant to the terms of the amended earn-out arrangement ("Cycleo Earn-out") with the former shareholders of Cycleo SAS ("Cycleo Earn-out Beneficiaries"), which the Company acquired on March 7, 2012, the Company potentially may make payments totaling up to approximately $16.0 million based on the achievement of a combination of certain revenue and operating income milestones over a defined period ("Cycleo Defined Earn-out Period"). The Cycleo Defined Earn-out Period covers the period April 27, 2015 to April 26, 2020. For certain of the Cycleo Earn-out Beneficiaries, payment of the earn-out liability is contingent upon continued employment and is accounted for as post-acquisition compensation expense over the service period. The portion of the earn-out liability that is not dependent on continued employment is not considered as compensation expense. The Company has recorded a liability for the Cycleo Earn-out of $5.9 million and $5.5 million as of April 29, 2018 and January 28, 2018, respectively, of which $2.2 million is expected to be paid within twelve months.

Pursuant to the terms of the AptoVision Earn-out with the former shareholders of AptoVision ("AptoVision Earn-out Beneficiaries"), which the Company acquired on July 1, 2017, the Company potentially may make payments totaling up to approximately $47.0 million based on the achievement of a combination of certain net revenue, adjusted earnings and product development targets measured from the acquisition date through July 26, 2020.

A summary of earn-out liabilities, included in "Accrued liabilities" and "Other long-term liabilities", by classification follows:

	Balance at April 29, 2018						Balance at January 28, 2018
(in thousands)	Cycleo		AptoVision		Total		Cycleo		AptoVision		Total
Compensation expense	$	4,806	$	—	$	4,806	$	4,408	$	—	$	4,408
Not conditional upon continued employment	668		21,000		21,668		668		21,000		21,668
Interest expense	444		—		444		444		—		444
Total liability	$	5,918	$	21,000	$	26,918	$	5,520	$	21,000	$	26,520
Amount expected to be settled within twelve months	$	2,155	$	8,688	$	10,843

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Note 12: Concentration of Risk

The following significant customers accounted for at least 10% of net sales in one or more of the periods indicated:

	Three Months Ended
(percentage of net sales)	April 29, 2018		April 30, 2017
Arrow Electronics (and affiliates)	12	%	9	%
Trend-tek Technology Ltd (and affiliates)	12	%	10	%
Samsung Electronics (and affiliates)	8	%	7	%
Premier Technical Sales Korea, Inc. (and affiliates) (1)	5	%	7	%

⁽¹⁾ Premier is a distributor with a concentration of sales to Samsung. The above percentages represent the Company's estimate of the sales activity related to Samsung that is passing through this distributor.

The following table shows the customers that have an outstanding receivable balance that represents at least 10% of total net receivables for the periods indicated:

	Balance as of
(percentage of net sales)	April 29, 2018		January 28, 2018
Trend-tek Technology Ltd (and affiliates)	12	%	8	%
Frontek Technology Corporation	10	%	9	%

Outside Subcontractors and Suppliers

The Company relies on a limited number of third-party subcontractors and suppliers for the production of silicon wafers, packaging and certain other tasks. Disruption or termination of supply sources or subcontractors, including due to natural disasters such as an earthquake or other causes, could delay shipments and could have a material adverse effect on the Company. Although there are generally alternate sources for these materials and services, qualification of the alternate sources could cause delays sufficient to have a material adverse effect on the Company. Several of the Company’s third-party subcontractors and suppliers, including third-party foundries that supply silicon wafers, are located in foreign countries, including China, Israel and Taiwan.A significant amount of the Company’s assembly and test operations are conducted by third-party contractors in China, Malaysia, Taiwan, Thailand, South Korea and the Philippines. For the first quarter of fiscal years 2019 and 2018, respectively, approximately 14% and 21%, respectively, of the Company’s silicon in terms of cost of wafers was supplied by a third-party foundry in China, and these percentages could be higher in future periods.

In the first quarter of fiscal year 2019, authorized distributors accounted for approximately 69% of the Company’s net sales compared to approximately 64% in the first quarter of fiscal year 2018, excluding consideration of any impact from the Warrant Shares. Generally, the Company does not have long-term contracts with its distributors and most can terminate their agreement with little or no notice. For the first quarter of fiscal year 2019, the Company's two largest distributors were based in Asia.

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Note 13: Segment Information

Segment Information

The Company’s CEO functions as the CODM. The Company’s CODM makes operating decisions and assesses performance based on these operating segments. As part of a realignment strategy, during the first quarter of fiscal year 2019, the Company restructured and combined the Power and High Reliability operating segment with the Wireless and Sensing operating segment to better align resources with our LoRa® initiatives. This resulted in the Company having three operating segments compared to previously having four operating segments. The three operating segments: Protection, Signal Integrity, and Wireless and Sensing, all have similar economic characteristics and have been aggregated into one reportable segment identified in the table below as the "Semiconductor Products Group".

The Company’s assets are commingled among the various operating segments and the CODM does not use that information in making operating decisions or assessing performance. Therefore, the Company has not included asset information by segment below.

Net sales by segment are as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Semiconductor Products Group	$	130,429	$	143,802
Total	$	130,429	$	143,802

Income by segment and reconciliation to consolidated operating income:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Semiconductor Products Group	$	40,812		$	39,222
Operating income by segment	40,812			39,222
Items to reconcile segment operating income to consolidated income before taxes
Share-based compensation	35,516			13,286
Intangible amortization	6,961			6,286
Other non-segment related expenses	1,432			1,204
Amortization of fair value adjustments related to acquired property, plant and equipment	—			190
Interest expense, net	2,190			2,046
Non-operating expense, net	(190		)	632
(Loss) income before taxes	$	(5,097	)	$	15,578

Information by Product Line

The Company operates exclusively in the semiconductor industry and primarily within the analog and mixed-signal sector.

The table below provides net sales activity by product line on a comparative basis:

	Three Months Ended
(in thousands, except percentages)	April 29, 2018					April 30, 2017
Signal Integrity	$	65,599		50	%	$	68,058		49	%
Protection	40,792			31	%	42,249			29	%
Wireless and Sensing	45,539			35	%	38,775			26	%
Other: Warrant Shares (1)	(21,501		)	(16	)%	(5,280		)	(4	)%
Total net sales	$	130,429		100	%	$	143,802		100	%

⁽¹⁾The cost of the Warrant granted was recognized as an offset to net sales over the respective performance period.

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Information by Sales Channel

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Distributor	$	111,340		$	100,542
Direct	40,590			48,540
Other: Warrant Shares	(21,501		)	(5,280		)
Total net sales	$	130,429		$	143,802

Geographic Information

The Company generates virtually all of its sales from its Semiconductor Products Group through sales of analog and mixed-signal devices.

Net sales activity by geographic region is as follows:

	Three Months Ended
	April 29, 2018		April 30, 2017
Asia-Pacific	68	%	75	%
North America	27	%	22	%
Europe	9	%	7	%
Other: Warrant Shares	(4	)%	(4	)%
	100	%	100	%

The Company attributes sales to a country based on the ship-to address. The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods presented:

	Three Months Ended
(percentage of total sales)	April 29, 2018		April 30, 2017
China (including Hong Kong)	50	%	52	%
United States	14	%	9	%

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Note 14: Stock Repurchase Program

Stock Repurchase Program

The Company maintains a stock repurchase program that was initially approved by its Board of Directors in March 2008. The stock repurchase program does not have an expiration date and the Company’s Board of Directors has authorized expansion of the program over the years. The following table summarizes activity under the program for the presented periods:

	Three Months Ended
	April 29, 2018			April 30, 2017
(in thousands, except number of shares)	Shares	Value		Shares	Value
Shares repurchased under the stock repurchase program	645,114	$	25,325	300,000	$	9,961
Total treasury shares required	645,114	$	25,325	300,000	$	9,961

As of April 29, 2018, the Company had repurchased $176.7 million in shares of its common stock under the program since inception and the remaining authorization under the program was $21.7 million. Under the program, the Company may repurchase its common stock at any time or from time to time, without prior notice, subject to market conditions and other considerations. The Company’s repurchases may be made through Rule 10b5-1 and/or Rule 10b-18 or other trading plans, open market purchases, privately negotiated transactions, block purchases or other transactions. The Company intends to fund repurchases under the program from cash on hand. The Company has no obligation to repurchase any shares under the program and may suspend or discontinue it at any time.

On May 24, 2018, the Company's Board of Directors authorized the expansion of the stock repurchase program by $250.0 million, bringing the total available authorization under the program to $271.7 million.

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Note 15: Restructuring

From time to time, the Company takes steps to realign the business to focus on high-growth areas, provide customer value and make the Company more efficient. As a result, the Company has re-aligned resources and infrastructure, which resulted in restructuring expense of $0.3 million and $6.3 million as of April 29, 2018 and January 28, 2018, respectively.

Restructuring related liabilities are included in "Accrued liabilities" within the Balance Sheets as of April 29, 2018 and January 28, 2018, respectively. Restructuring charges are presented in "Selling, general and administrative" within the Statements of Income.

Activity under the restructuring plans is summarized in the following table:

(in thousands)	One-time employee termination benefits			Contract commitments			Total
Balance at January 28, 2018	$	4,063		$	686		$	4,749
Charges	346			—			346
Cash payments	(2,691		)	(149		)	(2,840		)
Balance at April 29, 2018	$	1,718		$	537		$	2,255

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Note 16: Derivatives and Hedging Activities

The Company is exposed to certain risk arising from both its business operations and economic conditions and principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company, on a routine basis and in the normal course of business, experiences expenses denominated in Swiss Franc ("CHF"), Canadian Dollar ("CAD") and Great British Pound ("GBP"). Such expenses expose the Company to exchange rate fluctuations between these foreign currencies and the U.S. Dollar ("USD"). The Company uses derivative financial instruments in the form of forward contracts to mitigate risk associated with adverse movements in these foreign currency exchange rates on a portion of foreign denominated expenses expected to be realized during the current and following fiscal year. Currency forward contracts involve fixing the exchange rate for delivery of a specified amount of foreign currency on a specified date.

The Company’s accounting treatment for these instruments is based on whether or not the instruments are designated as a hedging instrument. The Company is currently applying hedge accounting to all foreign currency derivatives and has designated these hedges as cash flow hedges.

At April 29, 2018, the Company had the following outstanding foreign exchange contracts:

(in thousands)
Foreign Exchange Contracts	Number of Instruments	Sell Notional Value		Buy Notional Value
Sell USD/Buy CAD Forward Contract	9	$	12,829	C$	16,500
Total	9

These contracts met the criteria for cash flow hedges and the unrealized gains or losses, after tax, are recorded as a component of "Accumulated other comprehensive loss" within the Balance Sheet. The effective portions of cash flow hedges are recorded in accumulated other comprehensive income or loss ("AOCI") until the hedged item is recognized in selling, general and administrative ("SG&A") expense within the Statements of Income when the underlying hedged expense is recognized. Any ineffective portions of cash flow hedges are recorded in "Non-operating expense, net" within the Company’s Statements of Income. The Company presents its derivative assets and liabilities at their gross fair values on the Balance Sheets.

The Company had no outstanding foreign exchange contracts at January 28, 2018. The table below summarizes the carrying values of derivative instruments as of April 29, 2018:

	Carrying Values of Derivative Instruments as of April 29, 2018
(in thousands)	Fair Value - Assets (2)		Fair Value - (Liabilities) (2)		Derivative Net Carrying Value
Derivatives designated as hedging instruments
Foreign exchange contracts (1)	$	64	$	—	$	64
Total derivatives	$	64	$	—	$	64

⁽¹⁾ Assets are included in "Other current assets" and liabilities are included in "Accrued liabilities" within the Balance Sheets.

⁽²⁾ The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Please refer to Note 6.

The following table summarizes the amount of income recognized from derivative instruments for the three months ended April 29, 2018 and April 30, 2017 as well as the line items within the accompanying Statements of Income where the results are recorded for cash flow hedges:

	Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)					Location of Gain or Loss into Income (Effective Portion)	Amount of Gain Reclassified from AOCI into Income (Effective Portion)						Location of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended						Three Months Ended							Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017				April 29, 2018			April 30, 2017				April 29, 2018		April 30, 2017
Sell USD/Buy CAD Forward Contract	$	65	$	(35	)	SG&A	$	(1	)	$	—		SG&A	$	—	$	—
Sell USD/Buy GBP Forward Contract	—		234			SG&A	—			(59		)	SG&A	—		—
	$	65	$	199			$	(1	)	$	(59	)		$	—	$	—

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The amount of gains related to the effective portion of derivative instruments designated as cash flow hedges included in AOCI within the Balance Sheets for the three months ended April 29, 2018 and April 30, 2017 was $0.1 million and $0.1 million, respectively. Any gains or losses under these contracts are expected to be realized and reclassified to selling, general and administrative expenses within the next nine months.

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ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following "Management’s Discussion and Analysis of Financial Condition and Results of Operations" should be read in conjunction with our unaudited consolidated financial statements and the accompanying notes included in Part I, Item 1 of this Quarterly Report on Form 10-Q (this "Quarterly Report") and the "Special Note Regarding Forward-Looking and Cautionary Statements" in this Quarterly Report.

Overview

Semtech Corporation (together with its consolidated subsidiaries, the "Company", "we", "our", or "us") designs, develops, manufactures and markets high-performance analog, mixed signal semiconductors and advanced algorithms. As part of a realignment strategy, during the first quarter of fiscal year 2019, the Company restructured and combined the Power and High Reliability operating segment with the Wireless and Sensing operating segment to better align resources with our LoRa® initiatives. We operate and account for results in one reportable segment. The Company’s interim unaudited consolidated balance sheets are referred to herein as the "Balance Sheets" and interim unaudited consolidated statements of income are referred to herein as the "Statements of Income."

Our product lines include:

Signal Integrity Products. We design, develop and market a portfolio of optical data communications and video transport products used in a wide variety of enterprise computing, industrial, communications and high-end consumer applications. Our comprehensive portfolio of integrated circuits ("ICs") for datacenters, enterprise networks, passive optical networks ("PON"), and wireless basestation optical transceivers and high-speed interfaces ranges from 100Mbps to 400Gbps and supports key industry standards such as Fibre Channel, Infiniband, Ethernet, PON and SONET. Our video products offer advanced solutions for next generation broadcast applications, as well as highly differentiated video over IP technology for Pro AV applications.

Protection Products. We design, develop and market high performance protection devices, which are often referred to as transient voltage suppressors ("TVS"). TVS devices provide protection for electronic systems where voltage spikes (called transients), such as electrostatic discharge ("ESD"), electrical over stress ("EOS") or secondary lightning surge energy, can permanently damage sensitive semiconductor ICs. Our portfolio of protection solutions include filter and termination devices that are integrated with the TVS device. Our products provide robust protection while preserving signal integrity in high-speed communications, networking and video interfaces. These products also operate at very low voltage. Our protection products can be found in a broad range of applications including smart phones, LCD and organic light-emitting diode TVs, set-top boxes, monitors and displays, tablets, computers, notebooks, base stations, routers, automobile and industrial instruments.

Wireless and Sensing Products. We design, develop and market a portfolio of specialized RF products used in a wide variety of industrial, medical and communications applications, and specialized sensing products used in industrial and consumer applications. Our wireless products, which include our LoRa® devices and radio frequency technology ("LoRa Technology"), feature industry leading and longest range industrial, scientific and medical radio, enabling a lower total cost of ownership and increased reliability in all environments. This makes these products particularly suitable for machine to machine ("M2M") and IoT applications. Our unique sensing technology enables smart proximity sensing and advanced user interface solutions for our mobile and consumer products. Our wireless and sensing products can be found in a broad range of applications in the industrial, medical and consumer markets. We also design, develop and market power product devices that control, alter, regulate and condition the power within electronic systems. The highest volume product types within this category are switching voltage regulators, combination switching and linear regulators, smart regulators, isolated switches and wireless charging.

Our net sales by product line are as follows:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Signal Integrity	$	65,599		$	68,058
Protection	40,792			42,249
Wireless and Sensing	45,539			38,775
Other: Warrant Shares (1)	(21,501		)	(5,280		)
Total	$	130,429		$	143,802

⁽¹⁾ On October 5, 2016, we issued a warrant (the "Warrant") to Comcast Cable Communications Management LLC ("Comcast") to purchase up to 1,086,957 shares (the "Warrant Shares") of our common stock. The Warrant was issued by us to Comcast in connection with an agreement between the parties regarding the intended trial deployment by Comcast of a low-power wide-area Network ("LPWAN") in the United States, based on our LoRa® devices and wireless radio frequency technology. The Warrant is accounted for as equity and the cost is

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recognized as an offset to net sales. The Warrant is now fully-vested and exercisable for a total of 869,565 shares, with no additional costs to be recognized in future periods.

Most of our sales to customers are made on the basis of individual customer purchase orders. Many customers include cancellation provisions in their purchase orders. Trends within the industry toward shorter lead-times and "just-in-time" deliveries have resulted in our reduced ability to predict future shipments. As a result, we rely on orders received and shipped within the same quarter for a significant portion of our sales. Orders received and shipped in the first quarters of fiscal years 2019 and 2018 represented 69% and 41% of net sales, respectively, excluding consideration of any impact from the Warrant Shares. Sales made directly to customers during the first quarters of fiscal years 2019 and 2018 were 31% and 36% of net sales, respectively. The remaining sales were made through independent distributors.Our business relies on foreign-based entities. Most of our outside subcontractors and suppliers, including third-party foundries that supply silicon wafers, are located in foreign countries, including China, Taiwan and Israel. For the first quarter of fiscal years 2019 and 2018, approximately 14% and 21%, respectively, of the Company’s silicon in terms of cost of wafers was supplied by a third-party foundry in China, and these percentages could be higher in future periods. Foreign sales during the first quarter of fiscal years 2019 and 2018 constituted approximately 86% and 91%, respectively, of our net sales. Approximately 68% and 82% of foreign sales during the first quarters of fiscal years 2019 and 2018, respectively, were to customers located in the Asia-Pacific region. The remaining foreign sales were primarily to customers in Europe, Canada, and Mexico.

We use several metrics as indicators of future potential growth. The indicators that we believe best correlate to potential future revenue growth are design wins and new product releases. There are many factors that may cause a design win or new product release not to result in sales, including a customer decision not to go to system production, a change in a customer’s perspective regarding a product’s value or a customer’s product failing in the end-market. As a result, although a design win or new product introduction is an important step towards generating future revenue, it does not inevitably result in us being awarded business or receiving a purchase commitment.

Historically, our results have reflected some seasonality, with demand levels generally lower in the enterprise computing and high-end consumer end-markets during the first and fourth quarters of our fiscal year in comparison to the second and third quarters.

Critical Accounting Policies and Estimates

In addition to the discussion below, please refer to the disclosures regarding our critical accounting policies in "Management’s Discussion and Analysis of Financial Condition and Results of Operations" included in Item 7 of our Annual Report on Form 10-K for the fiscal year ended January 28, 2018 filed with the Securities and Exchange Commission ("SEC") on March 22, 2018.

Fiscal Periods

We report results on the basis of 52 and 53 week periods and end our fiscal year on the last Sunday in January. The other quarters generally end on the last Sunday of April, July and October. All quarters consist of 13 weeks except for one 14-week period in the fourth quarter of 53-week years. The first quarter of fiscal years 2019 and 2018 each consisted of 13 weeks.

Revenue and Cost of Sales

The Company derives its revenue primarily from the sale of semiconductor products into various end markets. Revenue is recognized when control of these products is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for these products. Control is generally transferred when products are shipped and, to a lesser extent, when the products are delivered. Recovery of costs associated with product design and engineering services are recognized during the period in which services are performed and are reported as a reduction to product development and engineering expense. Historically, these recoveries have not exceeded the cost of the related development efforts. The Company includes revenue related to granted technology licenses as part of "Net sales." Historically, revenue from these arrangements has not been significant though it is part of its recurring ordinary business.

The Company determines revenue recognition through the following five steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligations in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligations in the contract

• Recognition of revenue when, or as, performance obligations are satisfied

The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable.

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The Company’s revenue contracts generally represent a single performance obligation to sell its products to trade customers. Net sales reflect the transaction prices for contracts, which include units shipped at selling prices reduced by variable consideration. Determination of variable consideration requires judgment by the Company. Variable consideration includes expected sales returns and other price adjustments. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. Sales returns are generally accepted at the Company’s discretion or from distributors with such rights. The Company’s contracts with trade customers do not have significant financing components or non-cash consideration. The Company records net sales excluding taxes collected on its sales to its trade customers.

The Company provides an assurance type warranty which is typically not sold separately and does not represent a separate performance obligation. The Company’s payment terms are generally aligned with shipping terms (See Note 2).

On October 5, 2016, we issued a Warrant to Comcast to purchase up to 1,086,957 Warrant Shares of our common stock. The cost of the Warrant is recognized as an offset to net sales. On April 27, 2018, the Company accelerated the vesting of the remaining 586,956 unvested shares from the Warrant ("Acceleration Event"), resulting in the full recognition of the previously unrecognized costs. For the three-month period ended April 29, 2018, the revenue offset reflects the cost associated with the Warrant of $21.5 million, including $15.9 million related to the Acceleration Event. The Warrant is now fully-vested and exercisable for a total of 869,565 shares. No additional Warrant related costs will be recognized in future periods.

Gross Profit

Gross profit is equal to our net sales less our cost of sales. Our cost of sales includes materials, depreciation on fixed assets used in the manufacturing process, shipping costs, direct labor and overhead. We determine the cost of inventory by the first-in, first-out method.

Operating Costs

Our operating costs and expenses generally consist of selling, general and administrative, product development and engineering costs, costs associated with acquisitions, restructuring charges, and other operating related charges.

Results of Operations

The following table sets forth, for the periods indicated, our Statements of Income expressed as a percentage of revenues.

	Three Months Ended
	April 29, 2018		April 30, 2017
Net sales	100.0	%	100.0	%
Cost of sales	45.2	%	41.0	%
Gross profit	54.8	%	59.0	%
Operating costs and expenses:
Selling, general and administrative	31.7	%	23.7	%
Product development and engineering	20.1	%	18.1	%
Intangible amortization	5.3	%	4.4	%
Loss on disposition of business operations	—	%	0.3	%
Total operating costs and expenses	57.2	%	46.4	%
Operating (loss) income	(2.4	)%	12.7	%
Interest expense, net	(1.7	)%	(1.4	)%
Non-operating income (expense), net	0.1	%	(0.4	)%
(Loss) income before taxes and equity in net losses of equity method investments	(3.9	)%	10.8	%
Provision for taxes	(13.4	)%	2.6	%
Net income before equity in net losses of equity method investments	9.5	%	8.2	%
Equity in net losses of equity method investments	—	%	—	%
Net income	9.5	%	8.2	%
Percentages may not add precisely due to rounding.

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Our regional mix of (loss) income from continuing operations before taxes and equity in net losses of equity method investments is as follows:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Domestic	$	(7,700	)	$	(4,167	)
Foreign	2,603			19,745
Total	$	(5,097	)	$	15,578

Domestic performance from continuing operations includes amortization of acquired intangible assets and higher levels of share-based compensation compared to foreign operations.

Recent Accounting Pronouncements

New accounting standards are discussed in Note 1 to our unaudited consolidated financial statements, included in Item 1, of this Quarterly Report on Form 10-Q.

Comparison of the Three Months EndedApril 29, 2018 and April 30, 2017

All periods presented in the following summary of sales by major end-market reflect our current classification methodology (see Note 1 to our unaudited consolidated financial statements in this Quarterly Report on Form 10-Q for a description of each market category):

	Three Months Ended
(in thousands, except percentages)	April 29, 2018					April 30, 2017 (1)
Enterprise Computing	$	48,863		37	%	$	51,624		36	%
Industrial	48,846			37	%	37,681			26	%
High-End Consumer	37,513			29	%	41,927			29	%
Communications	16,708			13	%	17,850			13	%
Other: Warrant Shares	(21,501		)	(16	)%	(5,280		)	(4	)%
Total	$	130,429		100	%	$	143,802		100	%

⁽¹⁾ Reclassifications have been made to prior period amounts to conform to the current year’s presentation.

NetSales

Net sales for the first quarter of fiscal year 2019 were $130.4 million, a decrease of 9% compared to $143.8 million for the first quarter of fiscal year 2018. During the first quarter of fiscal year 2019, the Acceleration Event reduced net sales by an incremental $15.9 million. This was partially offset by growing demand for our LoRa® products, largely in China.

Based on recent bookings trends and our backlog entering the quarter, we estimate net sales for the second quarter of fiscal year 2019 to be between $155.0 million and $167.0 million.

Gross Profit

In the first quarter of fiscal year 2019, gross profit decreased to $71.5 million from $84.9 million in the first quarter of fiscal year 2018. Gross margins were 54.8% in the first quarter of fiscal year 2019 compared to 59.0% in the first quarter of fiscal year 2018. In the first quarter of fiscal year 2019, gross margin was adversely impacted by the Acceleration Event which reduced our gross profit by $15.9 million.

In the second quarter of fiscal year 2019, we expect our gross margins to be in the range of 60.8% to 61.8%.

Operating Costs and Expenses

	Three Months Ended								Change
(in thousands, except percentages)	April 29, 2018				April 30, 2017
Selling, general and administrative	$	41,406	56	%	$	34,015	51	%	22	%
Product development and engineering	26,199		35	%	25,983		39	%	1	%
Intangible amortization	6,961		9	%	6,286		9	%	11	%
Gain on disposition of business operations	—		—	%	375		1	%	(100	)%
Total operating costs and expenses	$	74,566	100	%	$	66,659	100	%	12	%

Selling, General and Administrative Expenses

Selling, general and administrative ("SG&A") expenses increased in the first quarter of fiscal year 2019 compared to the same quarter of fiscal year 2018 as a result of higher share-based compensation costs. The higher levels of share-based compensation

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expense primarily resulted from the impact of an award modification and the related fair value re-measurement of awards accounted for as liabilities rather than equity due to an increase in our stock price.

Product Development and Engineering Expenses

Product development and engineering expenses increased slightly in the first quarter of fiscal year 2019 compared to the first quarter of fiscal year 2018 as a result of higher levels of share-based compensation cost primarily from the increase in our stock price.

The levels of product development and engineering expenses reported in a fiscal period can be significantly impacted, and therefore experience period over period volatility, by the number of new product tape-outs and by the timing of recoveries from non-recurring engineering services which are typically recorded as a reduction to product development and engineering expense.

Intangible Amortization

Intangible amortization was $7.0 million and $6.3 million in the first quarter of fiscal years 2019 and 2018, respectively. The increase relates entirely to the addition of intangibles related to the acquisition of AptoVision Technologies Inc. ("AptoVision") in July 2017.

Interest Expense

Interest expense and amortization of debt discounts was $2.2 million and $2.0 million in the first quarter of fiscal years 2019 and 2018, respectively. The impact of higher LIBOR rates on interest expense was partially offset by lower overall debt levels.

We expect the interest rate on our credit facility to increase slightly in the second quarter of fiscal year 2019 as a result of higher anticipated LIBOR rates. See "Liquidity and Capital Resources" for a description of our credit facility.

Income Taxes

The effective tax rates for the first quarter of fiscal years 2019 and 2018 were a provision benefit of 341.3% and provision of 24.1%, respectively. In the first quarter of fiscal year 2019, we recorded an income tax benefit of $17.5 million, compared to a tax provision of $3.8 million in the first quarter of fiscal year 2018. The effective tax rate in the first quarter of fiscal year 2019 was higher than the effective tax rate in first quarter of fiscal year 2018 primarily due to a partial release of the valuation reserve against our U.S. deferred tax assets. Our effective tax rate in the first quarter of fiscal year 2019 differs from the statutory federal income tax rate of 21% primarily due to regional mix of income and a partial release of the valuation reserve against our U.S.

In connection with the enactment of the “Tax Cuts and Jobs Act,” we have determined that we will remit approximately $240.0 million of foreign earnings in the foreseeable future, and as a result, have established a deferred income tax liability for the withholding tax that will be due upon distribution of these earnings. We intend to indefinitely reinvest all other unremitted foreign earnings and, as a result, have not provided U.S. taxes on these earnings. We currently do not need these earnings to support our U.S. operations. If these unremitted foreign earnings are needed for our U.S. operations or can no longer be permanently reinvested outside the U.S., we would be required to accrue and pay foreign withholding taxes of approximately 5% on these earnings.

As a global organization, we are subject to audit by taxing authorities in various jurisdictions. To the extent that an audit, or the closure of a statute of limitations, results in our adjusting our reserves for uncertain tax positions, our effective tax rate could experience extreme volatility since any adjustment would be recorded as a discrete item in the period of adjustment.

Liquidity and Capital Resources

Our capital requirements depend on a variety of factors, including but not limited to, the rate of increase or decrease in our existing business base; the success, timing and amount of investment required to bring new products to market; revenue growth or decline; and potential acquisitions. We believe that we have the financial resources necessary to meet business requirements for the next 12 months, including funds needed for working capital requirements.

As of April 29, 2018, our total stockholders’ equity was $693.4 million. At that date, we also had approximately $303.3 million in cash and cash equivalents and $222.9 million of borrowings, net of debt discount.

We incur significant expenditures in order to fund the development, design, and manufacture of new products. We intend to continue to focus on those areas that have shown potential for viable and profitable market opportunities, which may require additional investment in equipment and the hiring of additional design and application engineers aimed at developing new products. Certain of these expenditures, particularly the addition of design engineers, do not generate significant payback in the short-term. We plan to finance these expenditures with cash generated by our operations and our existing cash balances.

A meaningful portion of our capital resources, and the liquidity they represent, are held by our foreign subsidiaries. As of April 29, 2018, our foreign subsidiaries held approximately $246.7 million of cash and cash equivalents compared to $215.1

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million at January 28, 2018. Additionally, in connection with the enactment of the Tax Cuts and Jobs Act, we determined that we will remit approximately $240.0 million of foreign earnings in the foreseeable future, and as a result, we have updated our assertion to reflect this change. As of April 29, 2018, our foreign subsidiaries had $408.1 million of unremitted earnings for which no taxes have been provided. These historical earnings have been and are expected to continue to be permanently reinvested.

One of our primary goals is to improve the cash flows from our existing business activities. Additionally, we will continue to seek to maintain and improve our existing business performance with capital expenditures and, potentially, acquisitions and other investments that support achievement of our business strategies. Acquisitions may be made for either cash or stock consideration, or a combination of both.

Operating Activities

Net cash provided by operating activities is primarily due to net income adjusted for non-cash items plus fluctuations in operating assets and liabilities.

Operating cash flow for the first three months of fiscal year 2019 was favorably impacted by lower inventory spend to align with the Company's strategic objectives. This was partially offset by the disbursement of $13.4 million of supplemental compensation, which is aligned with our financial performance and is normally settled in the first quarter of each fiscal year.

Investing Activities

Cash flows from investing activities is primarily attributable to capital expenditures, net of proceeds from sales of property, plant and equipment and proceeds from sales of investments. Investing activities are also impacted by acquisitions, net of any cash received.

Capital expenditures were $4.9 million for the first three months of fiscal year 2019 compared to $5.2 million for the first three months of fiscal year 2018.

In the first three months of fiscal year 2019, we invested $5.5 million in companies that are enabling the LoRaWAN^TM ecosystem and developing technologies that align with our technology road map.

On July 1, 2017, we acquired AptoVision for an upfront cash payment of $17.6 million at closing, net of acquired cash, and a commitment to pay an additional contingent consideration of up to a maximum of $47.0 million over three years if certain goals are achieved in each of the earn out periods. The first earn-out payment of up to $11.8 million is expected to be made in the second half of fiscal year 2019. We expect to fund any obligations associated with the additional cash consideration with cash generated by our operations and our existing cash balances.

On May 02, 2018, we acquired IC Interconnect, Inc., a privately-held, U.S.-based company for approximately $7.0 million. We funded the purchase price using our current cash assets.

Financing Activities

Cash provided by financing activities is primarily attributable to borrowings under our revolving commitments offset by principal and interest payments related to our long-term debt and repurchase of outstanding common stock.

In the first three months of fiscal year 2019, we received $4.0 million in proceeds from the exercise of stock options compared to $1.2 million in the first three months of fiscal year 2018.

We do not directly control the timing of the exercise of stock options. Such exercises are independent decisions made by grantees and are influenced most directly by the stock price and the expiration dates of stock option awards. Such proceeds are difficult to forecast, resulting from several factors which are outside our control. We believe that such proceeds will remain a nominal source of cash in the future.

Stock Repurchase Program

We currently have in effect a stock repurchase program that was initially approved by our Board of Directors in March 2008. This program represents one of our principal efforts to return value to our stockholders. We repurchased 645,114 shares under this program in the first three months of fiscal year 2019 for $25.3 million. In the first three months of fiscal year 2018, we repurchased 300,000 shares under this program for $10.0 million. We currently have $21.7 million available under this program that may be used for future repurchases.

On May 24, 2018, our Board of Directors increased the authorization by $250.0 million, bringing the total available authorization under the program to $271.7 million.

Credit Facilities

On November 15, 2016 (the "Closing Date"), we entered into an amended and restated credit agreement (the "Credit Agreement") to refinance our prior credit agreement. We accounted for the Credit Agreement as a debt modification. Pursuant to the Credit Agreement, the Lenders provided us with senior secured first lien credit facilities in an aggregate principal amount

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of $400.0 million, consisting of term loans in an aggregate principal amount of $150.0 million (the "Term Loans") and revolving commitments in an aggregate principal amount of $250.0 million (the "Revolving Commitments"). Up to $40.0 million of the Revolving Commitments may be used to obtain letters of credit, up to $25.0 million of the Revolving Commitments may be used to obtain swing line loans, and up to $40.0 million of the Revolving Commitments may be used to obtain revolving loans and letters of credit in certain currencies other than U.S. Dollars ("Alternative Currencies"). Each of the Term Loans and the Revolving Commitments is scheduled to mature on November 12, 2021.

The Credit Agreement refinanced our existing $400.0 million senior secured first lien credit facilities. All of the proceeds of the Term Loans were used to repay in full all of the obligations outstanding under the prior credit agreement and to pay transaction costs in connection with such refinancing and the Credit Agreement. As of April 29, 2018 we have $127.5 million outstanding under our Term Loans and $97.0 million outstanding under our Revolving Commitments.

As of April 29, 2018, $153.0 million of the Revolving Commitments were undrawn. The proceeds of the revolving credit facility may be used by us for capital expenditures, permitted acquisitions, permitted dividends, working capital and general corporate purposes.

The Credit Agreement provides that, subject to certain conditions, we may request, at any time and from time to time, the establishment of one or more additional term loan facilities and/or increases to the Revolving Commitments in an aggregate principal amount not to exceed the sum of (a) $150.0 million and (b) the aggregate principal amount of all voluntary prepayments of Term Loans made prior to the date of incurrence of such additional term loan facilities and/or increases to the Revolving Commitments; however, the Lenders are not required to provide such increase upon our request.

Interest on loans made under the Credit Agreement in U.S. Dollars accrues, at our option, at a rate per annum equal to (1) the Base Rate (as defined below) plus a margin ranging from 0.25% to 1.25% depending upon our consolidated leverage ratio or (2) LIBOR (determined with respect to deposits in U.S. Dollars) for an interest period to be selected by us plus a margin ranging from 1.25% to 2.25% depending upon our consolidated leverage ratio (such margin, the "Applicable Margin"). The "Base Rate" is equal to a fluctuating rate equal to the highest of (a) the prime rate of the Administrative Agent, (b) ½ of 1% above the federal funds effective rate published by the Federal Reserve Bank of New York and (c) one-month LIBOR (determined with respect to deposits in U.S. Dollars) plus 1.00%.

Interest on loans made under the Credit Agreement in Alternative Currencies accrues at a rate per annum equal to LIBOR (determined with respect to deposits in the applicable Alternative Currency) (other than loans made in Canadian Dollars, for which a special reference rate for Canadian Dollars applies) for an interest period to be selected by us plus the Applicable Margin.

The outstanding principal balance of the Term Loans was subject to repayment in equal quarterly installments beginning on the last day of our fiscal quarter ending closest to January 31, 2017 in an amount equal to 10.0% per annum of the original principal amount of the Term Loans on the Closing Date in the first two years after such date, 12.5% per annum in years three and four after such date, and 15.0% per annum in year five after such date, with the balance being due at maturity on November 12, 2021. No amortization is required with respect to the revolving credit facility. We may voluntarily prepay borrowings under the new credit facilities at any time and from time to time, without premium or penalty, other than customary "breakage costs" and fees for LIBOR-based loans.

The Term Loans must be mandatorily prepaid using the proceeds of certain dispositions of assets and receipt of insurance proceeds, subject to agreed upon thresholds and exceptions and customary reinvestment rights.

Off-Balance Sheet Arrangements     

We do not have any off-balance sheet arrangements, as those arrangements are defined by the SEC, that are reasonably likely to have a material effect on our financial condition, revenues or expenses, operating results, liquidity, capital expenditures or capital resources.

We do not have any unconsolidated subsidiaries or affiliated entities. We have no special purpose or limited purpose entities that provide off-balance sheet financing, liquidity or market or credit risk support. We do not engage in leasing, hedging, research and development services, or other relationships that expose us to liability that is not reflected on the face of the consolidated financial statements.

Contractual Obligations

There were no material changes in our contractual obligations during the first three months of fiscal year 2019 from those disclosed in "Management’s Discussion and Analysis of Financial Condition and Results of Operations" included in Item 7 of our Annual Report on Form 10-K for the fiscal year ended January 28, 2018 filed with the SEC on March 22, 2018.

Inflation

Inflationary factors have not had a significant effect on our performance over the past several years. A significant increase in inflation would affect our future performance if we were unable to pass these higher costs on to our customers.

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Available Information

General information about us can be found on our website at www.semtech.com. The information on our website is for informational purposes only and should not be relied on for investment purposes. The information on our website is not incorporated by reference into this Quarterly Report and should not be considered part of this or any other report filed with the SEC.

We make available free of charge, either by direct access on our website or by a link to the SEC website, our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or as soon as reasonably practicable after such reports are electronically filed with, or furnished to, the SEC. Our reports filed with, or furnished to, the SEC are also available directly at the SEC’s website at www.sec.gov.

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ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

We are subject to a variety of market risks, including commodity risk and the risks related to foreign currency, interest rates and market performance that are discussed in Item 7A of our Annual Report on Form 10-K for fiscal year 2018 that ended on January 28, 2018 filed with the SEC on March 22, 2018. Many of the factors that can have an impact on our market risk are external to us, and so we are unable to fully predict them.

We do not engage in the trading of derivative financial instruments in the normal course of business to mitigate our risk related to interest rates. In the event interest rates were to increase 100 basis points and holding all other variables constant, annual net income and cash flows for the following year would decrease by approximately $2.1 million as a result of our variable-rate debt. The effect of the 100 basis points increase would not be expected to significantly impact the fair value of our variable-rate debt.

Our investments are primarily subject to credit risk. Our investments are managed by a limited number of outside professional managers following investment guidelines set by us. Such guidelines prescribe credit quality, permissible investments, diversification, and duration restrictions. These restrictions are intended to limit risk by restricting our investments to high quality debt instruments with relatively short-term durations. Our investment strategy limits investment of new funds and maturing securities to U.S. Treasury, Federal agency securities, high quality money market funds and time deposits with our principal commercial banks.

We considered the historical trends in foreign currency exchange rates and determined that it is reasonably possible that adverse changes in foreign exchange rates of 10% for all currencies could be experienced in the near-term. These reasonably possible adverse changes were applied to our total monetary assets and liabilities denominated in currencies other than our functional currency as of the first quarter of fiscal year 2019, to compute the adverse impact these changes would have had (after taking into account balance sheet hedges only) on our income before taxes, to show an impact of $4.2 million.

ITEM 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, which are designed to ensure that information required to be disclosed in the reports we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer ("CEO") and Chief Financial Officer ("CFO"), as appropriate to allow timely decisions regarding required disclosure. Our management, with the participation of our CEO and CFO, evaluated the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report. Based on that evaluation, our CEO and CFO concluded that, our disclosure controls and procedures were effective as of April 29, 2018.

Changes in Internal Controls

As of April 29, 2018, there were no changes to our internal control over financial reporting that occurred during the fiscal quarter then ended that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1. Legal Proceedings

Information about legal proceedings is set forth in Note 11 to the unaudited consolidated financial statements included in Part I, Item 1 of this Quarterly Report.

ITEM 1A. Risk Factors

Please carefully consider and evaluate all of the information in this Quarterly Report and the risk factors set forth in our Annual Report on Form 10-K for the fiscal year ended January 28, 2018 filed with the SEC on March 22, 2018. The risks set forth in our Annual Report on Form 10-K are not the only ones we face. Additional risks not now known to us or that we currently deem immaterial may also impair our business operations. If any of these risks actually occur, our business could be materially harmed. If our business is harmed, the trading price of our common stock could decline.

The risk factors associated with our business have not materially changed, as compared to the risk factors disclosed in our Annual Report on Form 10-K for the fiscal year ended January 28, 2018 filed with the SEC on March 22, 2018.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

Recent Sales of Unregistered Securities

None.

Issuer Purchase of Equity Securities

This table provides information with respect to purchases by us of shares of our common stock during the first quarter of fiscal year 2019.

Fiscal Month/Year	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of  Publicly Announced Program	Approximate Dollar Value  of Shares That May Yet  Be Purchased Under  The Program (1)
February 2018 (01/29/18-02/25/18)	—	$	—	—	$	51.4	million
March 2018 (02/26/18-03/25/18)	100,645	40.48		100,645	$	43.0	million
April 2018 (03/26/18-04/29/18)	544,499	39.03		544,499	$	21.7	million
Total activity	645,144	$	39.25	645,144

(1) We maintain an active stock repurchase program which was approved by our Board of Directors in March 2008. The stock repurchase program does not have an expiration date and our Board of Directors has authorized expansion of the program over the years. 

As of April 29, 2018, we had repurchased $176.7 million in shares of our common stock under the program since inception and the current remaining authorization under our stock repurchase program is $21.7 million. Under our stock repurchase program, we may repurchase our common stock at any time or from time to time, without prior notice, subject to market conditions and other considerations. Our repurchases may be made through Rule 10b5-1 and/or Rule10b-18 or other trading plans, open market purchases, privately negotiated transactions, block purchases or other transactions. We intend to fund repurchases under the program from cash on hand. We have no obligation to repurchase any shares under the stock repurchase program and may suspend or discontinue it at any time.

Limitation Upon Payment of Dividends

The Credit Agreement governing our senior secured first lien credit facilities includes covenants limiting our ability to pay dividends or make distributions on our capital stock.

ITEM 3. Defaults Upon Senior Securities

None.

ITEM 4. Mine Safety Disclosures

Not applicable.

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ITEM 5. Other Information

None.

ITEM 6. Exhibits

Documents that are not physically filed with this report are incorporated herein by reference to the location indicated.

Exhibit No.	Description	Location
3.1	Restated Certificate of Incorporation of Semtech Corporation	Exhibit 3.1 to our Quarterly Report on Form 10-Q for the quarterly period ended October 26, 2003
3.2	Bylaws of Semtech Corporation	Exhibit 3.2 to our Annual Report on Form 10-K for the year ended January 27, 2008
10.1	Amendment to Warrant dated October 5, 2016 issued by Semtech Corporation to Comcast Cable Communications Management, LLC	Exhibit 10.1 to our Current Report on Form 8-K filed on May 3, 2018
31.1	Certification of the Chief Executive Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended	Filed herewith
31.2	Certification of the Chief Financial Officer Pursuant to Rule 13a-14(a) or Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended	Filed herewith
32.1	Certification of the Chief Executive Officer Pursuant to 18 U.S.C. §1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Exhibit 32.1 is being furnished and shall not be deemed "filed")	Furnished herewith
32.2	Certification of the Chief Financial Officer Pursuant 18 U.S.C. §1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Exhibit 32.2 is being furnished and shall not be deemed "filed")	Furnished herewith
101.INS	XBRL Instance Document	Filed herewith
101.SCH	XBRL Taxonomy Extension Schema Document	Filed herewith
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document	Filed herewith
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document	Filed herewith
101.LAB	XBRL Taxonomy Extension Label Linkbase Document	Filed herewith
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	Filed herewith

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SEMTECH CORPORATION
	Registrant
Date: May 30, 2018	/s/ Mohan R. Maheswaran
	Mohan R. Maheswaran
	President and Chief Executive Officer
Date: May 30, 2018	/s/ Emeka N. Chukwu
	Emeka N. Chukwu
	Executive Vice President and
	Chief Financial Officer

42

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Mohan R. Maheswaran, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Semtech Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 30, 2018

/s/ Mohan R. Maheswaran

Mohan R. Maheswaran

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Emeka N. Chukwu, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Semtech Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 30, 2018

/s/ Emeka N. Chukwu

Emeka N. Chukwu

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 USC 1350 AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Semtech Corporation (the “Company”) for the period ended April 29, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mohan R. Maheswaran, Chief Executive Officer of the Company, hereby certify pursuant to 18 USC §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 30, 2018

/s/ Mohan R. Maheswaran

Mohan R. Maheswaran

President and Chief Executive Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided to Semtech Corporation and will be retained by Semtech Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

The information contained in this Exhibit 32.1 is being furnished and shall not be deemed “filed” for the purposes of section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. The information in this Exhibit 32.1 shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Exchange Act of 1934, as amended, or the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference to this Exhibit 32.1 in such filing.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 USC 1350 AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Semtech Corporation (the “Company”) for the period ended April 29, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Emeka N. Chukwu, Chief Financial Officer of the Company, hereby certify pursuant to 18 USC §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 30, 2018

/s/ Emeka N. Chukwu

Emeka N. Chukwu

Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided to Semtech Corporation and will be retained by Semtech Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

The information contained in this Exhibit 32.2 is being furnished and shall not be deemed “filed” for the purposes of section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. The information in this Exhibit 32.2 shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Exchange Act of 1934, as amended, or the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference to this Exhibit 32.2 in such filing.

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Document And Entity Information - shares	3 Months Ended
	Apr. 29, 2018	May 25, 2018
Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Apr. 29, 2018
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	SEMTECH CORP
Entity Central Index Key	0000088941
Current Fiscal Year End Date	--01-27
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		66,184,781

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Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Net sales	$ 130,429	$ 143,802
Cost of sales	58,960	58,887
Gross profit	71,469	84,915
Operating costs and expenses:
Selling, general and administrative	41,406	34,015
Product development and engineering	26,199	25,983
Intangible amortization	6,961	6,286
Loss on disposition of business operations	0	375
Total operating costs and expenses	74,566	66,659
Operating (loss) income	(3,097)	18,256
Interest expense, net	(2,190)	(2,046)
Non-operating income (expense), net	190	(632)
(Loss) income before taxes and equity in net losses of equity method investments	(5,097)	15,578
Provision for taxes	(17,510)	3,757
Net income before equity in net losses of equity method investments	12,413	11,821
Equity in net losses of equity method investments	(31)	0
Net income	$ 12,382	$ 11,821
Earnings per share:
Basic (in dollars per share)	$ 0.19	$ 0.18
Diluted (in dollars per share)	$ 0.18	$ 0.18
Weighted average number of shares used in computing earnings per share:
Basic (in shares)	66,324	65,839
Diluted (in shares)	68,195	67,376

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Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Net income	$ 12,382	$ 11,821
Other comprehensive income, net:
Unrealized gain on convertible debt	0	750
Change in employee benefit plans	(16)	21
Other comprehensive income, net	31	901
Comprehensive income	12,413	12,722
Foreign Exchange Contract [Member]
Other comprehensive income, net:
Unrealized (loss) gain	47	183
Realized gain on foreign currency cash flow hedges	$ 0	$ (53)

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Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Current assets:
Cash and cash equivalents	$ 303,349	$ 307,923
Accounts receivable, less allowances of $2,710 and $9,089, respectively	65,568	53,183
Inventories	65,458	71,067
Prepaid taxes	12,874	11,809
Other current assets	20,143	17,250
Total current assets	467,392	461,232
Non-current assets:
Property, plant and equipment, net of accumulated depreciation of $184,686 and $179,604, respectively	122,469	124,586
Deferred tax assets	24,907	4,236
Goodwill	341,897	341,897
Other intangible assets, net	53,246	60,207
Other assets	88,894	93,618
TOTAL ASSETS	1,098,805	1,085,776
Current liabilities:
Accounts payable	38,676	37,208
Accrued liabilities	54,400	60,832
Deferred revenue	4,973	12,758
Current portion - long-term debt	16,358	15,410
Total current liabilities	114,407	126,208
Non-current liabilities:
Deferred tax liabilities	15,812	14,682
Long term debt, less current portion	206,552	211,114
Other long-term liabilities	68,680	68,759
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, $0.01 par value, 250,000,000 shares authorized, 78,136,144 issued and 66,140,592 outstanding and 78,136,144 issued and 66,280,129 outstanding, respectively	785	785
Treasury stock, at cost, 11,995,552 shares and 11,856,015 shares, respectively	(268,864)	(251,974)
Additional paid-in capital	438,364	415,056
Retained earnings	524,238	502,346
Accumulated other comprehensive loss	(1,169)	(1,200)
Total stockholders’ equity	693,354	665,013
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,098,805	$ 1,085,776

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts, receivables	$ 2,710	$ 9,089
Accumulated depreciation	$ 184,686	$ 179,604
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	78,136,144	78,136,144
Common stock, shares outstanding	66,140,592	66,280,129
Treasury stock, shares	11,995,552	11,856,015

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Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Cash flows from operating activities:
Net income	$ 12,382	$ 11,821
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,453	11,301
Accretion of deferred financing costs and debt discount	136	146
Deferred income taxes	(15,614)	3,151
Share-based compensation and warrant costs	35,516	13,286
(Gain) loss on disposition of business operations and assets	(10)	436
Equity in net losses of equity method investments	31	0
Contingencies	0	(50)
Corporate owned life insurance, net	(254)	248
Changes in assets and liabilities:
Accounts receivable, net	(7,844)	(4,471)
Inventories	5,609	(11,292)
Other assets	(1,098)	3,265
Accounts payable	3,203	(4,147)
Accrued liabilities	(6,852)	(12,536)
Deferred revenue	(180)	299
Income taxes payable	(1,698)	(3,222)
Other liabilities	(751)	2,124
Net cash provided by operating activities	35,029	10,359
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	27	6
Purchase of property, plant and equipment	(4,935)	(5,175)
Purchase of investments	(5,490)	(4,750)
Proceeds from sale of investments	1,601	0
Net cash used in investing activities	(8,797)	(9,919)
Cash flows from financing activities:
Payments of term loans	(3,750)	(3,750)
Payment for employee share-based compensation payroll taxes	(5,769)	(3,467)
Proceeds from exercise of stock options	4,038	1,159
Repurchase of outstanding common stock	(25,325)	(9,966)
Net cash used in financing activities	(30,806)	(16,024)
Net decrease in cash and cash equivalents	(4,574)	(15,584)
Cash and cash equivalents at beginning of period	307,923	297,134
Cash and cash equivalents at end of period	303,349	281,550
Supplemental disclosure of cash flow information
Income taxes paid	648	1,869
Interest paid	1,929	1,809
Non-cash items
Capital expenditures in accounts payable	2,054	1,511
Convertible debt	$ 0	$ 2,175

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Organization and Basis of Presentation

3 Months Ended

Apr. 29, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

Organization and Basis of Presentation

Nature of Business

Semtech Corporation (together with its consolidated subsidiaries, the "Company" or "Semtech") is a global supplier of analog and mixed-signal semiconductor products. The end customers for the Company’s products are primarily original equipment manufacturers ("OEMs") that produce and sell electronics.

The Company designs, develops and markets a wide range of products for commercial applications, the majority of which are sold into the enterprise computing, communications, high-end consumer and industrial end-markets.

Enterprise Computing: datacenters, passive optical networks, desktops, notebooks, servers, monitors, printers and other computer peripherals.

Communications: base stations, optical networks, carrier networks, switches and routers, cable modems, wireless LAN and other communication infrastructure equipment.

High-End Consumer: handheld products, smartphones, wireless charging, set-top boxes, digital televisions, tablets, digital video recorders and other consumer equipment.

Industrial: video broadcast equipment, Video-over-IP solutions, automated meter reading, Internet of Things ("IoT"), smart grid, wireless charging, military and aerospace, medical, security systems, automotive, industrial and home automation and other industrial equipment.

Fiscal Year

The Company reports results on the basis of 52 and 53 week periods and ends its fiscal year on the last Sunday in January. The other quarters generally end on the last Sunday of April, July and October. All quarters consist of 13 weeks except for one 14-week period in the fourth quarter of 53-week years. The first quarter of fiscal years 2019 and 2018 each consisted of 13 weeks.

Principles of Consolidation

The accompanying interim unaudited consolidated financial statements have been prepared by the Company, in accordance with accounting principles generally accepted in the United States ("GAAP") and on the same basis as the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended January 28, 2018. In the opinion of the Company, these interim unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly, in all material respects, the financial position of the Company for the interim periods presented. All intercompany balances have been eliminated. Certain information and footnote disclosures normally included in annual consolidated financial statements have been condensed or omitted pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Because the interim unaudited consolidated financial statements do not include all of the information and notes required by GAAP for a complete set of consolidated financial statements, they should be read in conjunction with the audited consolidated financial statements and notes included in the Company's Annual Report on Form 10-K for the year ended January 28, 2018. The results reported in these interim unaudited consolidated financial statements should not be regarded as indicative of results that may be expected for any subsequent period or for the entire year.

The Company’s interim unaudited consolidated statements of income are referred to herein as the "Statements of Income." The Company’s interim unaudited consolidated balance sheets are referred to herein as the "Balance Sheets" and interim unaudited consolidated statements of cash flows as the "Statements of Cash Flows."

Segment Information

The Company’s Chief Executive Officer ("CEO") has been identified as the Chief Operating Decision Maker ("CODM") as defined by guidance regarding segment disclosures (see Note 13 for further discussion). Prior to the first quarter of fiscal year 2019, the Company had four operating segments. However as of April 29, 2018, the Company identified three operating segments that aggregate into one reportable segment, the Semiconductor Products Group.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Recent Accounting Standards Adopted

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Accounting Standards Codification ("ASC") 606), which requires an entity to recognize revenue from the transfer of control of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance addresses, in particular, contracts with more than one performance obligation, as well as the accounting for some costs to obtain or fulfill a contract with a customer, and provides for additional disclosures with respect to revenues and cash flows arising from contracts with customers.

The Company adopted the standard, effective January 29, 2018, using the modified retrospective transition method which resulted in an adjustment to retained earnings for the cumulative effect of applying the standard to all contracts not completed as of the adoption date. The primary change associated with the adoption relates to the Company’s sales to distributors with return or price adjustment rights where the Company will no longer defer revenue until the resale by the distributor to the end customer, but rather, will record revenue at the time control transfers to the distributor. The Company estimated the effects of returns and allowances provided to these distributors. Upon adoption, including the effect of income taxes, opening retained earnings as of January 29, 2018 increased by $11.1 million net, as a result of these changes. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

In October 2016, the FASB issued ASU No. 2016-16, Intra-Entity Asset Transfers Other Than Inventory (Topic 740). This accounting standard update is aimed at recognizing the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This removes the exception to postpone the recognition of income tax consequences of intra-entity transfers until the asset has been sold to an outside party. In the first quarter of 2019, the Company adopted ASU 2016-16 using a modified retrospective transition method, resulting in a $1.8 million decrease in retained earnings, a $3.7 million net increase in deferred income tax assets, and a $5.5 million decrease in pre-paid taxes.

Accounting Guidance Issued but Not Adopted as of April 29, 2018

In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815). This standard addresses narrow issues identified as a result of the complexity associated with applying GAAP for certain financial instruments with characteristics of liabilities and equity. Part I addresses the complexity of accounting for certain financial instruments with down round features. Part II addresses the difficulty of navigating Topic 480, Distinguishing Liabilities from Equity, because of the existence of pending content in the ASC that results from the indefinite deferral of accounting requirements concerning mandatorily redeemable financial instruments of certain non-public entities and certain mandatorily redeemable non-controlling interests. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this pronouncement to have a material impact on the Company’s consolidated financial statements.

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815). The new standard is designed to refine and expand hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application of hedge accounting guidance. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption, including adoption in an interim period, is permitted. The Company is currently evaluating the impact this ASU will have on its consolidated condensed financial statements and disclosures.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which will require that substantially all leases be recognized by lessees on their balance sheets as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. The new standard also will result in enhanced quantitative and qualitative disclosures, including descriptions of significant judgments made by management, to provide greater insight into the extent of expense recognized and expected to be recognized from existing leases. The standard requires modified retrospective adoption and will be effective for the Company as of the beginning of fiscal year 2020. The Company expects the valuation of right of use assets and lease liabilities, previously described as operating leases, to be the present value of the Company's forecasted future lease commitments. The Company is continuing to assess the overall impacts of the new standard, including the discount rate to be applied in these valuations.

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Revenue

3 Months Ended

Apr. 29, 2018

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

The Company derives its revenue primarily from the sale of semiconductor products into various end markets. Revenue is recognized when control of these products is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for these products. Control is generally transferred when products are shipped and, to a lesser extent, when the products are delivered. Recovery of costs associated with product design and engineering services are recognized during the period in which services are performed and are reported as a reduction to product development and engineering expense. Historically, these recoveries have not exceeded the cost of the related development efforts. The Company includes revenue related to granted technology licenses as part of "Net sales." Historically, revenue from these arrangements has not been significant though it is part of its recurring ordinary business.

The Company determines revenue recognition through the following five steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligations in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligations in the contract

• Recognition of revenue when, or as, performance obligations are satisfied

The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable.

The Company’s revenue contracts generally represent a single performance obligation to sell its products to trade customers. Net sales reflect the transaction prices for contracts, which include units shipped at selling prices reduced by variable consideration. Determination of variable consideration requires judgment by the Company. Variable consideration includes expected sales returns and other price adjustments. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. Sales returns are generally accepted at the Company’s discretion or from distributors with such rights. The Company’s contracts with trade customers do not have significant financing components or non-cash consideration. The Company records net sales excluding taxes collected on its sales to its trade customers.

The Company provides an assurance type warranty which is typically not sold separately and does not represent a separate performance obligation. The Company’s payment terms are generally aligned with shipping terms.

The following presents the amounts by which financial statement line items were affected in the current period due to the adoption of ASC 606 as compared with the guidance that was in effect before the change:

	Three Months Ended
Statements of Income	April 29, 2018
(in thousands, except per share amounts)	Increase/(decrease)
Net sales	$	4,462
Cost of sales	1,016
Provision for taxes	724
Net income	2,722
Earnings per share:
Basic	$	0.04
Diluted	$	0.04

Balance Sheets	April 29, 2018
(in thousands)	Increase/(decrease)
Deferred revenue	$	(15,737	)

Excludes line items that were not materially affected by the Company's adoption of ASC 606. The adoption had no impact to total net cash provided by or used in operating, investing or financing activities in the Statements of Cash Flows.

Contract Modifications:

If a contract is modified, which does not normally occur, changes in contract specifications and requirements must be accounted for. The Company considers contract modifications to exist when the modification either creates new or changes the existing enforceable rights and obligations. Most of the Company’s contract modifications are to distributor agreements for adding new goods or services that are considered distinct from the existing contract and the change in contract price reflects the standalone selling price of the distinct service.

Disaggregated Revenue:

The Company disaggregates revenue from contracts with customers by types of products and geography, as it believes it best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 13: Segment Information” for further information on revenues by product line and geographic region.

Contract Balances:

Accounts receivable represents the Company’s unconditional right to receive consideration from its customer. Contract assets consist of the Company’s right to consideration in exchange for goods or services that the Company has transferred to a customer when that right is conditioned on something other than the passage of time. ASC 606 also requires an entity to present a revenue contract as a contract liability in instances when a customer pays consideration, or an entity has a right to an amount of consideration that is unconditional (e.g. receivable), before the entity transfers a good or service to the customer. The opening and closing contract asset and contract liability balances are not material.

There were no impairment losses recognized on the Company’s accounts receivable and contract assets during the three months ended April 29, 2018. There were no significant changes in the contract assets and the contract liabilities during the three months ended April 29, 2018.

Practical Expedients:

Unsatisfied Performance Obligations: Because all of the Company’s performance obligations relate to contracts with a duration of less than one year, the Company elected to apply the optional exemption provided in ASC 606 and, therefore, is not required to disclose the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period.

Contract Costs: All incremental customer contract acquisition costs are expensed as they are incurred as the amortization period of the asset that the Company otherwise would have recognized is one year or less in duration.

Significant Financing Component: The Company does not adjust the promised amount of consideration for the effects of a significant financing component as the Company expects, at contract inception, that the period between when the Company transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less.

Sales Tax Exclusion from the Transaction Price: The Company excludes from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the Company from the customer.

Shipping and Handling Activities: The Company accounts for shipping and handling activities performed after a customer obtains control of the good as activities to fulfill the promise to transfer the good.

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Earnings Per Share

3 Months Ended

Apr. 29, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per Share

The computation of basic and diluted earnings per common share was as follows:

	Three Months Ended
(in thousands, except per share amounts)	April 29, 2018		April 30, 2017
Net income	$	12,382	$	11,821
Weighted average common shares outstanding - basic	66,324		65,839
Dilutive effect of stock options and restricted stock units	1,871		1,537
Weighted average common shares outstanding - diluted	68,195		67,376
Basic earnings per common share	$	0.19	$	0.18
Diluted earnings per common share	$	0.18	$	0.18
Anti-dilutive shares not included in the above calculations	146		686

Basic earnings per common share is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding during the reporting period. Diluted earnings per common share incorporates the incremental shares issuable, calculated using the treasury stock method, upon the assumed exercise of non-qualified stock options, the vesting of restricted stock units and performance unit awards if the conditions have been met.

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Share-Based Compensation

3 Months Ended

Apr. 29, 2018

Share-based Compensation [Abstract]

Share-Based Compensation

Share-Based Compensation

Financial Statement Effects and Presentation. The following table summarizes pre-tax share-based compensation included in the Statements of Income for the three months ended April 29, 2018 and April 30, 2017.

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Revenue offset	$	21,501	$	5,280
Cost of sales	328		564
Selling, general and administrative	11,462		5,557
Product development and engineering	2,225		1,885
Share-based compensation	$	35,516	$	13,286
Net change in share-based compensation capitalized into inventory	$	—	$	(414	)

Warrant. On October 5, 2016, the Company issued a warrant (the "Warrant") to Comcast Cable Communications Management LLC ("Comcast") to purchase up to 1,086,957 shares (the "Warrant Shares") of the common stock of Semtech Corporation. The Warrant was issued by the Company to Comcast in connection with an agreement between the parties regarding the intended trial deployment by Comcast of a low-power wide-area Network ("LPWAN") in the United States, based on the Company’s LoRa® devices and wireless radio frequency technology. The Warrant is accounted for as equity and the cost is recognized as an offset to net sales over the respective performance period. The Warrant consists of five performance tranches. The cost associated with each tranche has been recognized based on the fair value at each reporting date until vesting which is the measurement date. On April 27, 2018, the Company accelerated the vesting of the remaining 586,956 unvested shares from the Warrant, resulting in the full recognition of the remaining costs to be recognized for the Warrant. For the three-month period ended April 29, 2018, the revenue offset reflects the cost associated with the Warrant of $21.5 million, including $15.9 million related to the acceleration. The Warrant is now fully-vested and exercisable for a total of 869,565 shares, with no additional costs to be recognized in future periods.

Performance-Based Restricted Stock Units. The Company grants performance-based restricted stock units to select employees. The performance-based restricted stock units are valued as of the measurement date and expense is recognized on a straight line basis for the awards expected to vest based on the probability of attainment of the performance condition for each separately vesting portion of the award.

In the first quarter of fiscal year 2019, the Company granted 200,442 performance-based restricted stock units that have a pre-defined market condition and a service condition that are accounted for as equity awards. The market condition is determined based upon the Company’s total stockholder return ("TSR") benchmarked against the TSR of the S&P SPDR Semiconductor ETF (NYSE:XSD) over a one, two and three year period (one-third of the awards vesting each performance period). The fiscal year 2019 award recipients must be employed for the entire performance period and be an active employee at the time of vesting of the awards. The Company used a Monte Carlo simulation to determine the grant-date fair value for these awards, which takes into consideration the possible outcomes pertaining to the TSR market condition. The grant-date fair value per unit of the awards granted in the first quarter of fiscal year 2019 for each one, two and three year performance period is $33.02, $34.85 and $36.52, respectively.

Award Modifications. During the first quarter of fiscal year 2019, the Company modified the terms of 159,000 fully vested shares held by 8 employees. As a result of the modification, additional compensation cost of $2.8 million was recognized during the first quarter of fiscal year 2019.

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Investments

3 Months Ended

Apr. 29, 2018

Investments [Abstract]

Investments

Investments

Cash and cash equivalents includes investments in money market funds that are valued based on the net asset value of the funds. The cash equivalents consist primarily of money market funds that are Level 1 measurements. The investments in these funds were $30.0 million and $0.0 millionas of April 29, 2018 and January 28, 2018, respectively.

The following table summarizes the Company’s available-for-sale securities:

	April 29, 2018						January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Convertible debt	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—
Total other assets	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—

The following table summarizes the maturities of the Company’s available-for-sale securities:

	April 29, 2018				January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	2,000	$	2,000	$	1,960	$	1,960
After 1 year through 5 years	500		500		—		—
Total investments	$	2,500	$	2,500	$	1,960	$	1,960

The Company's available-for-sales securities consisted of investments in convertible debt instruments issued by privately-held companies and is included in "Other current assets" within the Balance Sheets.

The Company currently has a $30.0 million investment, which includes $3.0 million of restricted deposits, in a private entity that is accounted for at cost and included in "Other assets" within the Balance Sheets. As part of its investment, the Company received a call option that allows the Company to purchase all of the outstanding equity of the entity. The call option, which was out-of-the-money at inception, is exercisable until June 30, 2018.

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Fair Value Measurements

3 Months Ended

Apr. 29, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Instruments Measured at Fair Value on a Recurring Basis

Financial assets and liabilities measured and recorded at fair value on a recurring basis were presented within the Company's Balance Sheets as follows:

	Fair Value as of April 29, 2018								Fair Value as of January 28, 2018
(in thousands)	Total		(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)
Financial assets:
Cash equivalents	$	30,000	$	30,000	$	—	$	—	$	—	$	—	$	—	$	—
Derivative financial instruments	64		—		64		—		—		—		—		—
Convertible debt	2,500		—		—		2,500		1,960		—		—		1,960
Total financial assets	$	32,564	$	30,000	$	64	$	2,500	$	1,960	$	—	$	—	$	1,960
Financial liabilities:
AptoVision Earn-out	$	21,000	$	—	$	—	$	21,000	$	21,000	$	—	$	—	$	21,000
Cycleo Earn-out	668		—		—		668		668		—		—		668
Total financial liabilities	$	21,668	$	—	$	—	$	21,668	$	21,668	$	—	$	—	$	21,668

During the three months ended April 29, 2018, the Company had no transfers of financial assets or liabilities between Level 1, Level 2 or Level 3. As of April 29, 2018 and January 28, 2018, the Company had not elected the fair value option for any financial assets and liabilities for which such an election would have been permitted.

The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Foreign currency forward contracts are valued using readily available foreign currency forward and interest rate curves. The fair value of each contract is determined by comparing the contract rate to the forward rate and discounting to the present value. Contracts in a gain position are recorded in the Balance Sheets within the caption "Other current assets" and the value of contracts in a loss position are recorded within the caption "Accrued liabilities" within the Balance Sheets. Please see Note 16 for further discussion of the Company’s derivative instruments.

The convertible debt is valued using probability weighted cash flows (Level 3 inputs).

The AptoVision Earn-out liability is valued utilizing estimates of annual revenue, adjusted earnings and product development targets (Level 3 inputs) through July 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Cycleo Earn-out liability (see Note 11) is valued utilizing estimates of annual revenue and operating income (Level 3 inputs) through April 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Company measures contingent earn-out liabilities at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy. The Company uses a Monte Carlo valuation method as a valuation technique to determine the value of the earn-out liability. The significant unobservable inputs used in the fair value measurements are revenue projections over the earn-out period, and the probability outcome percentages assigned to each scenario. Significant increases or decreases to either of these inputs in isolation would result in a significantly higher or lower liability, with a higher liability capped by the contractual maximum of the contingent earn-out obligation. Ultimately, the liabilities will be equivalent to the amount paid, and the difference between the fair value estimate and amount paid will be recorded in earnings. For the Cycleo Earn-out and AptoVision Earn-out, these companies have business profiles comparable to a start-up company. Accordingly, their respective revenue projections are subject to significant revisions. This characteristic can result in volatile changes to the measurement of fair value for a given earn-out.

The Company reviews and re-assesses the estimated fair value of contingent consideration on a recurring basis, and the updated fair value could differ materially from the previous estimates. Changes in the estimated fair value of the Company’s contingent earn-out liabilities related to the time component of the present value calculation are reported in "Interest expense" within the Statements of Income. Adjustments to the estimated fair value related to changes in all other unobservable inputs are reported in operating income.

A reconciliation of the change in the earn-out liability during the three months ended April 29, 2018 is as follows:

(in thousands)	AptoVision		Cycleo		Total
Balance at January 28, 2018	$	21,000	$	668	$	21,668
Changes in the fair value of contingent earn-out obligations	—		—		—
Current acquisitions	—		—		—
Payments	—		—		—
Balance as of April 29, 2018	$	21,000	$	668	$	21,668

Instruments Not Recorded at Fair Value on a Recurring Basis

Some of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate fair value due to their liquid or short-term nature. Such financial assets and financial liabilities include: cash and cash equivalents, net receivables, certain other assets, accounts payable, accrued expenses, accrued personnel costs, and other current liabilities.

The Company’s long-term debt is not recorded at fair value on a recurring basis, but is measured at fair value for disclosure purposes. The fair value of the Company’s Term Loans (as defined in Note 9) is $127.5 million and $131.3 million as of April 29, 2018 and January 28, 2018, respectively. The fair value of the Company's Revolving Commitments (as defined in Note 9) is$97.0 million as of both April 29, 2018 and January 28, 2018, respectively. These are based on Level 2 inputs which are derived from transactions with similar amounts, maturities, credit ratings and payment terms.

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis

The Company reduces the carrying amounts of its goodwill, intangible assets, long-lived assets and non-marketable equity securities to fair value when held for sale or determined to be impaired.

For its investment in non-marketable equity interests, the Company has not identified events or changes in circumstances that may have a significant adverse effect on the fair value of its equity investments during the first three months of fiscal year 2019.

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Inventories

3 Months Ended

Apr. 29, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories, consisting of material, material overhead, labor, and manufacturing overhead, are stated at the lower of cost (first-in, first-out) or market and consist of the following:

(in thousands)	April 29, 2018		January 28, 2018
Raw materials	$	1,583	$	1,651
Work in progress	42,078		46,884
Finished goods	21,797		22,532
Inventories	$	65,458	$	71,067

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Goodwill and Intangible Assets

3 Months Ended

Apr. 29, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill – Changes in the carrying amount of goodwill by applicable reporting unit were as follows:

(in thousands)	Signal Integrity		Wireless and Sensing		Total
Balance at January 28, 2018	$	274,085	$	67,812	$	341,897
Additions	—		—		—
Balance at April 29, 2018	$	274,085	$	67,812	$	341,897

As a result of the realignment of its operating segments, during the first quarter of fiscal year 2019, the Company combined the Wireless and Sensing and the Power and High-Reliability reporting units (see Note 13). Goodwill of $49.4 million related to the Power and High-Reliability reporting unit which was previously a separate reporting unit is now included in the Wireless and Sensing reporting unit’s goodwill balance. The reporting units are the same as the operating segments which are part of a single reportable segment. The difference between the fair value and the carrying amount of these reporting units is one of several factors the Company will consider before reaching its conclusion about whether to perform the first step of the goodwill impairment test.

Purchased Intangibles – The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions, which continue to be amortized:

		April 29, 2018							January 28, 2018
(in thousands)	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core technologies	5-8 years	$	164,930	$	(121,156	)	$	43,774	$	164,930	$	(115,628	)	$	49,302
Customer relationships	3-10 years	34,031		(26,859		)	7,172		34,031		(25,426		)	8,605
Total finite-lived intangible assets		$	198,961	$	(148,015	)	$	50,946	$	198,961	$	(141,054	)	$	57,907

Amortization expenses recorded in the Statements of Income for each period were as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Core technologies	$	5,528	$	5,186
Customer relationships	1,433		1,100
Total amortization expense	$	6,961	$	6,286

The following table sets forth the Company’s indefinite-lived intangible assets resulting from additions to IPR&D:

(in thousands)	Net Carrying Value
Value at January 28, 2018	$	2,300
In-process research and development through acquisitions	—
Value at April 29, 2018	$	2,300

The Company reviews indefinite-lived intangible assets for impairment as of November 30, each year, by comparing the carrying amount of the asset to the future discounted cash flows that asset is expected to generate.

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Credit Facilities

3 Months Ended

Apr. 29, 2018

Debt Instruments [Abstract]

Credit Facilities

Credit Facilities

On November 15, 2016 (the "Closing Date"), Semtech Corporation, with certain of its domestic subsidiaries as guarantors (the "Guarantors"), entered into the amended and restated credit facility with the lenders party thereto ("Lenders"), and HSBC Bank USA, National Association, as administrative agent and as swing line lender and letter of credit issuer (the "Credit Agreement"). The Credit Agreement amended and restated the Company's prior credit agreement. The Company accounted for the Credit Agreement as a debt modification. Pursuant to the Credit Agreement, the Lenders provided the Company with senior secured first lien credit facilities in an aggregate principal amount of $400.0 million, consisting of term loans in an aggregate initial principal amount of $150.0 million (the "Term Loans") and revolving credit commitments in an aggregate principal amount of $250.0 million (the "Revolving Commitments"). Up to $40.0 million of the Revolving Commitments may be used to obtain letters of credit, up to $25.0 million of the Revolving Commitments may be used to obtain swing line loans, and up to $40.0 million of the Revolving Commitments may be used to obtain revolving loans and letters of credit in certain currencies other than U.S. Dollars. Each of the Term Loans and the Revolving Commitments is scheduled to mature on November 12, 2021. As of April 29, 2018, there were no amounts outstanding under the letters of credit, swing line loans and alternative currency sub facilities.

All of the proceeds of the Credit Agreement were used to repay in full all of the obligations outstanding under the Company’s prior credit facility and to pay transaction costs in connection with such refinancing. As of November 15, 2016, $247.0 million of borrowings were outstanding under the Credit Agreement, consisting of $150.0 million in term loans and $97.0 million in revolving loans, and there was $153.0 million of undrawn revolving commitments. The proceeds of the revolving credit facility may be used by the Company for capital expenditures, permitted acquisitions, permitted dividends, working capital and general corporate purposes.

The Credit Agreement provides that, subject to certain conditions, the Company may request the establishment of one or more additional term loan facilities and/or increases to the Revolving Commitments in an aggregate principal amount not to exceed the sum of (a) $150.0 million and (b) the aggregate principal amount of all voluntary prepayments of term loans made prior to the date of incurrence of such additional term loan facilities and/or increases to the revolving commitments. The Lenders will have an opportunity to, but are not required to participate in the additional term loan facilities and/or revolving commitment increases. If the Lenders do not agree to provide such incremental facilities, the Company may request such additional and/or increased facilities from additional lenders.

Interest on loans made under the Credit Agreement in U.S. Dollars accrues, at the Company's option, at a rate per annum equal to (1) the Base Rate (as defined below) plus a margin ranging from 0.25% to 1.25% depending upon the Company's consolidated leverage ratio or (2) LIBOR (determined with respect to deposits in U.S. Dollars) for an interest period to be selected by the Company plus a margin ranging from 1.25% to 2.25% depending upon the Company's consolidated leverage ratio (such margin, the "Applicable Margin"). The "Base Rate" is equal to a fluctuating rate equal to the highest of (a) the prime rate of the administrative agent, (b) ½ of 1% above the federal funds effective rate published by the Federal Reserve Bank of New York and (c) one-month LIBOR (determined with respect to deposits in U.S. Dollars) plus 1%. Interest on loans made under the Credit Agreement in alternative currencies accrues at a rate per annum equal to LIBOR (determined with respect to deposits in the applicable alternative currency) (other than loans made in Canadian Dollars, for which a special reference rate for Canadian Dollars applies) for an interest period to be selected by the Company plus the Applicable Margin.

Commitment fees on the unused portion of the revolving commitments accrue at a rate per annum ranging from 0.20% to 0.45% depending upon the Company's consolidated leverage ratio. With respect to letters of credit, the Company will pay the administrative agent, for the account of the lenders under the revolving credit facility, letter of credit participation fees at a rate per annum equal to the applicable margin then in effect with respect to LIBOR-based loans under the revolving commitments on the face amount of all outstanding letters of credit. The Company also will pay HSBC Bank USA, N.A., as the issuing bank, a fronting fee for each letter of credit issued under the Credit Agreement at a rate equal to 0.125% per annum based on the maximum amount available to be drawn under each such letter of credit, as well as its customary documentation fees.

All obligations of the Company under the Credit Agreement are unconditionally guaranteed by each of the Guarantors, which currently consist of all of the direct and indirect domestic subsidiaries of Semtech Corporation. Semtech Corporation and the Guarantors have also pledged substantially all of their assets, including sixty-five percent (65.0%) of such Guarantor's equity interest in direct non-U.S. subsidiaries, to secure their obligations under the Credit Agreement, including the Company's owned real property located in Camarillo, California.

The outstanding principal balance of the Term Loans is subject to repayment in quarterly installments. No amortization is required with respect to the revolving credit facility. The Company may voluntarily prepay borrowings under the Credit Agreement at any time and from time to time, without premium or penalty, other than customary "breakage costs" and fees for LIBOR-based loans.

The Term Loans are required to be prepaid using the proceeds of certain dispositions of assets and receipt of insurance proceeds, subject to agreed-upon thresholds and exceptions and customary reinvestment rights.

The Credit Agreement contains customary covenants, including limitations on Company’s ability to, among other things, incur indebtedness, create liens on assets, engage in certain fundamental corporate changes, make investments, sell or otherwise dispose of assets, repurchase stock, pay dividends or make similar distributions, engage in certain transactions with affiliates and make capital expenditures. In addition, the Company must comply with the following financial covenants, tested at the end of each fiscal quarter on a trailing four-quarter basis: (i) a minimum consolidated interest coverage ratio of 3.00 to 1.00 and (ii) a maximum consolidated leverage ratio of 3.00 to 1.00 provided that, such maximum consolidated leverage ratio may be increased to 3.25 to 1.00 or 3.50 to 1.00, as applicable, for the four consecutive fiscal quarters ending on or after the date of consummation of a permitted acquisition which constitutes a "Material Acquisition" under the Credit Agreement, subject to the satisfaction of certain conditions. As of April 29, 2018, the Company was in compliance with all financial covenants.

The Credit Agreement also contains customary provisions pertaining to events of default. If any event of default occurs, the principal, interest, and any other monetary obligations on all the then outstanding amounts can become due and payable immediately by action of the administrative agent acting upon the instructions of or with the consent of the Lenders representing more than 50% of the revolving commitments and outstanding term loans or automatically upon the occurrence of certain bankruptcy events related to the Company.

As of April 29, 2018, the interest rates payable on both the Term Loans and the Revolving Commitments was 3.51%.

Scheduled maturities of current and long-term Term Loans are as follows:

(in thousands)
Fiscal Year Ending:
2019	$	12,188
2020	18,750
2021	19,687
2022	76,875
Total debt	$	127,500

As of April 29, 2018, we had $153.0 million of unused borrowing capacity under the Revolving Commitments, after deducting $97.0 million for draw down on the Revolving Commitments, which is due on or before November 12, 2021.

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Income Taxes

3 Months Ended

Apr. 29, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s effective tax rate differs from the statutory federal income tax rate of 21% primarily due to regional mix of income and a partial release of the valuation allowance in the U.S. The valuation allowance was released in the current quarter as a result of the Company obtaining the information necessary to evaluate the impact of the Global Intangible Low-Taxed Income (“GILTI”) provisions, enacted as part of the Tax Cuts and Jobs Act (“Tax Act”) on December 22, 2017. This item was left open under Staff Accounting Bulletin 118 (“SAB 118”) in the financial statements for the year ended January 28, 2018 and the Company has now made a reasonable estimate based on the most current information available.

The Tax Act made significant changes to U.S. income tax laws, including transitioning from a worldwide tax system to a territorial tax system. This change in the U.S. international tax system included the introduction of several new tax regimes that are effective as of January 1, 2018, including the GILTI provisions. The GILTI provisions effectively tax the foreign earnings of U.S. multinational companies at 10.5%, half the current corporate tax rate. During the three months ended April 29, 2018, the Company finalized its analysis regarding the interplay of the foreign tax credits associated with this income, which are allowed against the U.S. tax liability generated as a result of the GILTI provision, and the potential impact on the related valuation allowance. As a result, the Company recorded a tax benefit of $15.8 million related to the reduction of the valuation allowance on certain U.S. deferred tax assets generated prior to fiscal year 2019.

While management believes the provisional amounts recorded during the three months ended April 29, 2018 and the

year ended January 28, 2018 represent reasonable estimates of the ultimate impact U.S. tax reform will have on the

Company's consolidated financial statements, it is possible the Company may continue to materially adjust these

amounts for related administrative guidance, notices, implementation regulations, potential legislative amendments and

interpretations as the Act continues to evolve. These adjustments could have an impact on the Company's tax assets

and liabilities, effective tax rate, net income and earnings per share.

The Company uses a two-step approach to recognize and measure uncertain tax positions ("UTP"). The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (before federal impact of state items) is as follows:

(in thousands)
Balance at January 28, 2018	$	16,059
Additions based on tax positions related to the current year	733
Balance as of April 29, 2018	$	16,792

Included in the balance of gross unrecognized tax benefits at April 29, 2018 and January 28, 2018, are $4.5 million and 3.9 million, respectively, of net tax benefits (after federal impact of state items), that, if recognized, would impact the effective tax rate, prior to consideration of any required valuation allowance.

The liability for UTP is reflected within the Balance Sheets as follows:        

(in thousands)	April 29, 2018		January 28, 2018
Deferred tax assets - non-current	$	12,252	$	12,135
Other long-term liabilities	4,540		3,924
Total accrued taxes	$	16,792	$	16,059

The Company’s policy is to include net interest and penalties related to unrecognized tax benefits within the "Provision for taxes" in the Statements of Income.

Tax years prior to 2013 (the Company’s fiscal year 2014) are generally not subject to examination by the U.S. Internal Revenue Service ("IRS") except for items involving tax attributes that have been carried forward to tax years whose statute of limitations remains open. For state returns, the Company is generally not subject to income tax examinations for calendar years prior to 2012 (the Company’s fiscal year 2013). The Company has a significant tax presence in Switzerland for which Swiss tax filings have been examined through fiscal year 2017. The Company is also subject to routine examinations by various foreign tax jurisdictions in which it operates. The Company believes that adequate provisions have been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with the Company's expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs.

The Company’s regional income from continuing operations before taxes and equity in net losses of equity method investments is as follows:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Domestic	$	(7,700	)	$	(4,167	)
Foreign	2,603			19,745
Total	$	(5,097	)	$	15,578

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Commitments and Contingencies

3 Months Ended

Apr. 29, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

Commitments and Contingencies

In accordance with accounting standards regarding loss contingencies, the Company accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable and the amount can be reasonably estimated. The Company also discloses the amount accrued and the amount of a reasonably possible loss in excess of the amount accrued, if such disclosure is necessary for its consolidated financial statements not to be misleading. The Company does not record liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated, or when the liability is believed to be only reasonably possible or remote. The Company evaluates, at least quarterly, developments in its legal matters that could affect the amount of liability that has been previously accrued, and makes adjustments as appropriate. Significant judgment is required to determine both probability and the estimated amount. The Company may be unable to estimate a possible loss or range of possible loss due to various reasons, including, among others: (i) if the damages sought are indeterminate; (ii) if the proceedings are in early stages, (iii) if there is uncertainty as to the outcome of pending appeals, motions or settlements, (iv) if there are significant factual issues to be determined or resolved, and (v) if there are novel or unsettled legal theories presented. In such instances, there is considerable uncertainty regarding the ultimate resolution of such matters, including a possible eventual loss, if any.

Because the outcomes of litigation and other legal matters are inherently unpredictable, the Company’s evaluation of legal matters or proceedings often involves a series of complex assessments by management about future events and can rely heavily on estimates and assumptions. While the consequences of certain unresolved matters and proceedings are not presently determinable, and an estimate of the probable and reasonably possible loss or range of loss in excess of amounts accrued for such proceedings cannot be reasonably made, an adverse outcome from such proceedings could have a material adverse effect on the Company’s earnings in any given reporting period. However, in the opinion of management, after consulting with legal counsel, any ultimate liability related to current outstanding claims and lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company’s consolidated financial statements, as a whole. However, legal matters are inherently unpredictable and subject to significant uncertainties, some of which are beyond the Company’s control.

As such, even though the Company intends to vigorously defend itself with respect to its legal matters, there can be no assurance that the final outcome of these matters will not materially and adversely affect the Company’s business, financial condition, operating results, or cash flows.

From time to time, the Company is involved in various claims, litigation, and other legal actions that are normal to the nature of its business, including with respect to IP, contract, product liability, employment, and environmental matters. In the opinion of management, after consulting with legal counsel, any ultimate liability related to current outstanding claims and lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company’s consolidated financial statements, as a whole.

The Company’s currently pending legal matters of note are discussed below:

Environmental Matters

The Company vacated a former facility in Newbury Park, California in 2002, but continues to address groundwater and soil contamination at the site.

The Company’s efforts to address site conditions have been at the direction of the Los Angeles Regional Water Quality Control Board (“RWQCB”). In October 2013, an order was issued including a scope of proposed additional site work, monitoring, and proposed remediation activities. The Company filed appeals of the October 2013 order seeking reconsideration by the RWQCB and review by the State Water Resources Control Board ("SWRCB") of the removal of two other potentially responsible parties, and seeking clarification of certain other factual findings. In April 2015, the RWQCB denied the Company’s request to name the two other potentially responsible parties to the order, but did correct certain findings of fact identified by the Company in its petition for reconsideration. The SWRCB has not yet ruled on the Company’s petition for review of the RWQCB’s action as the petition was filed with a request it be held in abeyance.

The Company has been complying with RWQCB orders and direction, and is implementing an approved remedial action plan (prepared by an environmental firm retained by the Company) addressing the cleanup of soil, groundwater, and soil vapor at the site.

The Company has accrued liabilities where it is probable that a loss will be incurred and the cost or amount of loss can be reasonably estimated. Based on the latest determinations by the RWQCB and the most recent actions taken pursuant to the remedial action plan, the Company continues to estimate the range of probable loss between $4.1 million and $7.2 million.Given the uncertainties associated with environmental assessment and the remediation activities, the Company is unable to determine a best estimate within the range of loss. Therefore, the Company has recorded the minimum amount of probable loss. These estimates could change as a result of changes in planned remedial actions, further actions from the regulatory agency, remediation technology, and other factors.

Indemnification

The Company has entered into agreements with its current and former executives and directors indemnifying them against certain liabilities incurred in connection with the performance of their duties. The Company’s Certificate of Incorporation and Bylaws contain comparable indemnification obligations with respect to the Company’s current directors and employees.

Product Warranties

The Company’s general warranty policy provides for repair or replacement of defective parts. In some cases, a refund of the purchase price is offered. In certain instances the Company has agreed to other or additional warranty terms, including indemnification provisions.

The product warranty accrual reflects the Company’s best estimate of probable liability under its product warranties. The Company accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified issues based on historical experience. Historically, warranty expense has been immaterial to the Company’s consolidated financial statements.

Earn-out Liability

Pursuant to the terms of the amended earn-out arrangement ("Cycleo Earn-out") with the former shareholders of Cycleo SAS ("Cycleo Earn-out Beneficiaries"), which the Company acquired on March 7, 2012, the Company potentially may make payments totaling up to approximately $16.0 million based on the achievement of a combination of certain revenue and operating income milestones over a defined period ("Cycleo Defined Earn-out Period"). The Cycleo Defined Earn-out Period covers the period April 27, 2015 to April 26, 2020. For certain of the Cycleo Earn-out Beneficiaries, payment of the earn-out liability is contingent upon continued employment and is accounted for as post-acquisition compensation expense over the service period. The portion of the earn-out liability that is not dependent on continued employment is not considered as compensation expense. The Company has recorded a liability for the Cycleo Earn-out of $5.9 million and $5.5 million as of April 29, 2018 and January 28, 2018, respectively, of which $2.2 million is expected to be paid within twelve months.

Pursuant to the terms of the AptoVision Earn-out with the former shareholders of AptoVision ("AptoVision Earn-out Beneficiaries"), which the Company acquired on July 1, 2017, the Company potentially may make payments totaling up to approximately $47.0 million based on the achievement of a combination of certain net revenue, adjusted earnings and product development targets measured from the acquisition date through July 26, 2020.

A summary of earn-out liabilities, included in "Accrued liabilities" and "Other long-term liabilities", by classification follows:

	Balance at April 29, 2018						Balance at January 28, 2018
(in thousands)	Cycleo		AptoVision		Total		Cycleo		AptoVision		Total
Compensation expense	$	4,806	$	—	$	4,806	$	4,408	$	—	$	4,408
Not conditional upon continued employment	668		21,000		21,668		668		21,000		21,668
Interest expense	444		—		444		444		—		444
Total liability	$	5,918	$	21,000	$	26,918	$	5,520	$	21,000	$	26,520
Amount expected to be settled within twelve months	$	2,155	$	8,688	$	10,843

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Concentration of Risk

3 Months Ended

Apr. 29, 2018

Risks and Uncertainties [Abstract]

Concentration of Risk

Concentration of Risk

The following significant customers accounted for at least 10% of net sales in one or more of the periods indicated:

	Three Months Ended
(percentage of net sales)	April 29, 2018		April 30, 2017
Arrow Electronics (and affiliates)	12	%	9	%
Trend-tek Technology Ltd (and affiliates)	12	%	10	%
Samsung Electronics (and affiliates)	8	%	7	%
Premier Technical Sales Korea, Inc. (and affiliates) (1)	5	%	7	%

⁽¹⁾ Premier is a distributor with a concentration of sales to Samsung. The above percentages represent the Company's estimate of the sales activity related to Samsung that is passing through this distributor.

The following table shows the customers that have an outstanding receivable balance that represents at least 10% of total net receivables for the periods indicated:

	Balance as of
(percentage of net sales)	April 29, 2018		January 28, 2018
Trend-tek Technology Ltd (and affiliates)	12	%	8	%
Frontek Technology Corporation	10	%	9	%

Outside Subcontractors and Suppliers

The Company relies on a limited number of third-party subcontractors and suppliers for the production of silicon wafers, packaging and certain other tasks. Disruption or termination of supply sources or subcontractors, including due to natural disasters such as an earthquake or other causes, could delay shipments and could have a material adverse effect on the Company. Although there are generally alternate sources for these materials and services, qualification of the alternate sources could cause delays sufficient to have a material adverse effect on the Company. Several of the Company’s third-party subcontractors and suppliers, including third-party foundries that supply silicon wafers, are located in foreign countries, including China, Israel and Taiwan.A significant amount of the Company’s assembly and test operations are conducted by third-party contractors in China, Malaysia, Taiwan, Thailand, South Korea and the Philippines. For the first quarter of fiscal years 2019 and 2018, respectively, approximately 14% and 21%, respectively, of the Company’s silicon in terms of cost of wafers was supplied by a third-party foundry in China, and these percentages could be higher in future periods.

In the first quarter of fiscal year 2019, authorized distributors accounted for approximately 69% of the Company’s net sales compared to approximately 64% in the first quarter of fiscal year 2018, excluding consideration of any impact from the Warrant Shares. Generally, the Company does not have long-term contracts with its distributors and most can terminate their agreement with little or no notice. For the first quarter of fiscal year 2019, the Company's two largest distributors were based in Asia.

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Segment Information

3 Months Ended

Apr. 29, 2018

Segment Reporting [Abstract]

Segment Information

Segment Information

Segment Information

The Company’s CEO functions as the CODM. The Company’s CODM makes operating decisions and assesses performance based on these operating segments. As part of a realignment strategy, during the first quarter of fiscal year 2019, the Company restructured and combined the Power and High Reliability operating segment with the Wireless and Sensing operating segment to better align resources with our LoRa® initiatives. This resulted in the Company having three operating segments compared to previously having four operating segments. The three operating segments: Protection, Signal Integrity, and Wireless and Sensing, all have similar economic characteristics and have been aggregated into one reportable segment identified in the table below as the "Semiconductor Products Group".

The Company’s assets are commingled among the various operating segments and the CODM does not use that information in making operating decisions or assessing performance. Therefore, the Company has not included asset information by segment below.

Net sales by segment are as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Semiconductor Products Group	$	130,429	$	143,802
Total	$	130,429	$	143,802

Income by segment and reconciliation to consolidated operating income:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Semiconductor Products Group	$	40,812		$	39,222
Operating income by segment	40,812			39,222
Items to reconcile segment operating income to consolidated income before taxes
Share-based compensation	35,516			13,286
Intangible amortization	6,961			6,286
Other non-segment related expenses	1,432			1,204
Amortization of fair value adjustments related to acquired property, plant and equipment	—			190
Interest expense, net	2,190			2,046
Non-operating expense, net	(190		)	632
(Loss) income before taxes	$	(5,097	)	$	15,578

Information by Product Line

The Company operates exclusively in the semiconductor industry and primarily within the analog and mixed-signal sector.

The table below provides net sales activity by product line on a comparative basis:

	Three Months Ended
(in thousands, except percentages)	April 29, 2018					April 30, 2017
Signal Integrity	$	65,599		50	%	$	68,058		49	%
Protection	40,792			31	%	42,249			29	%
Wireless and Sensing	45,539			35	%	38,775			26	%
Other: Warrant Shares (1)	(21,501		)	(16	)%	(5,280		)	(4	)%
Total net sales	$	130,429		100	%	$	143,802		100	%

⁽¹⁾The cost of the Warrant granted was recognized as an offset to net sales over the respective performance period.

Information by Sales Channel

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Distributor	$	111,340		$	100,542
Direct	40,590			48,540
Other: Warrant Shares	(21,501		)	(5,280		)
Total net sales	$	130,429		$	143,802

Geographic Information

The Company generates virtually all of its sales from its Semiconductor Products Group through sales of analog and mixed-signal devices.

Net sales activity by geographic region is as follows:

	Three Months Ended
	April 29, 2018		April 30, 2017
Asia-Pacific	68	%	75	%
North America	27	%	22	%
Europe	9	%	7	%
Other: Warrant Shares	(4	)%	(4	)%
	100	%	100	%

The Company attributes sales to a country based on the ship-to address. The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods presented:

	Three Months Ended
(percentage of total sales)	April 29, 2018		April 30, 2017
China (including Hong Kong)	50	%	52	%
United States	14	%	9	%

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Stock Repurchase Program

3 Months Ended

Apr. 29, 2018

Equity [Abstract]

Stock Repurchase Program

Stock Repurchase Program

Stock Repurchase Program

The Company maintains a stock repurchase program that was initially approved by its Board of Directors in March 2008. The stock repurchase program does not have an expiration date and the Company’s Board of Directors has authorized expansion of the program over the years. The following table summarizes activity under the program for the presented periods:

	Three Months Ended
	April 29, 2018			April 30, 2017
(in thousands, except number of shares)	Shares	Value		Shares	Value
Shares repurchased under the stock repurchase program	645,114	$	25,325	300,000	$	9,961
Total treasury shares required	645,114	$	25,325	300,000	$	9,961

As of April 29, 2018, the Company had repurchased $176.7 million in shares of its common stock under the program since inception and the remaining authorization under the program was $21.7 million. Under the program, the Company may repurchase its common stock at any time or from time to time, without prior notice, subject to market conditions and other considerations. The Company’s repurchases may be made through Rule 10b5-1 and/or Rule 10b-18 or other trading plans, open market purchases, privately negotiated transactions, block purchases or other transactions. The Company intends to fund repurchases under the program from cash on hand. The Company has no obligation to repurchase any shares under the program and may suspend or discontinue it at any time.

On May 24, 2018, the Company's Board of Directors authorized the expansion of the stock repurchase program by $250.0 million, bringing the total available authorization under the program to $271.7 million.

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Restructuring

3 Months Ended

Apr. 29, 2018

Restructuring and Related Activities [Abstract]

Restructuring

Restructuring

From time to time, the Company takes steps to realign the business to focus on high-growth areas, provide customer value and make the Company more efficient. As a result, the Company has re-aligned resources and infrastructure, which resulted in restructuring expense of $0.3 million and $6.3 million as of April 29, 2018 and January 28, 2018, respectively.

Restructuring related liabilities are included in "Accrued liabilities" within the Balance Sheets as of April 29, 2018 and January 28, 2018, respectively. Restructuring charges are presented in "Selling, general and administrative" within the Statements of Income.

Activity under the restructuring plans is summarized in the following table:

(in thousands)	One-time employee termination benefits			Contract commitments			Total
Balance at January 28, 2018	$	4,063		$	686		$	4,749
Charges	346			—			346
Cash payments	(2,691		)	(149		)	(2,840		)
Balance at April 29, 2018	$	1,718		$	537		$	2,255

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Derivatives and Hedging Activities

3 Months Ended

Apr. 29, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

Derivatives and Hedging Activities

The Company is exposed to certain risk arising from both its business operations and economic conditions and principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company, on a routine basis and in the normal course of business, experiences expenses denominated in Swiss Franc ("CHF"), Canadian Dollar ("CAD") and Great British Pound ("GBP"). Such expenses expose the Company to exchange rate fluctuations between these foreign currencies and the U.S. Dollar ("USD"). The Company uses derivative financial instruments in the form of forward contracts to mitigate risk associated with adverse movements in these foreign currency exchange rates on a portion of foreign denominated expenses expected to be realized during the current and following fiscal year. Currency forward contracts involve fixing the exchange rate for delivery of a specified amount of foreign currency on a specified date.

The Company’s accounting treatment for these instruments is based on whether or not the instruments are designated as a hedging instrument. The Company is currently applying hedge accounting to all foreign currency derivatives and has designated these hedges as cash flow hedges.

At April 29, 2018, the Company had the following outstanding foreign exchange contracts:

(in thousands)
Foreign Exchange Contracts	Number of Instruments	Sell Notional Value		Buy Notional Value
Sell USD/Buy CAD Forward Contract	9	$	12,829	C$	16,500
Total	9

These contracts met the criteria for cash flow hedges and the unrealized gains or losses, after tax, are recorded as a component of "Accumulated other comprehensive loss" within the Balance Sheet. The effective portions of cash flow hedges are recorded in accumulated other comprehensive income or loss ("AOCI") until the hedged item is recognized in selling, general and administrative ("SG&A") expense within the Statements of Income when the underlying hedged expense is recognized. Any ineffective portions of cash flow hedges are recorded in "Non-operating expense, net" within the Company’s Statements of Income. The Company presents its derivative assets and liabilities at their gross fair values on the Balance Sheets.

The Company had no outstanding foreign exchange contracts at January 28, 2018. The table below summarizes the carrying values of derivative instruments as of April 29, 2018:

	Carrying Values of Derivative Instruments as of April 29, 2018
(in thousands)	Fair Value - Assets (2)		Fair Value - (Liabilities) (2)		Derivative Net Carrying Value
Derivatives designated as hedging instruments
Foreign exchange contracts (1)	$	64	$	—	$	64
Total derivatives	$	64	$	—	$	64

⁽¹⁾ Assets are included in "Other current assets" and liabilities are included in "Accrued liabilities" within the Balance Sheets.

⁽²⁾ The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Please refer to Note 6.

The following table summarizes the amount of income recognized from derivative instruments for the three months ended April 29, 2018 and April 30, 2017 as well as the line items within the accompanying Statements of Income where the results are recorded for cash flow hedges:

	Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)					Location of Gain or Loss into Income (Effective Portion)	Amount of Gain Reclassified from AOCI into Income (Effective Portion)						Location of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended						Three Months Ended							Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017				April 29, 2018			April 30, 2017				April 29, 2018		April 30, 2017
Sell USD/Buy CAD Forward Contract	$	65	$	(35	)	SG&A	$	(1	)	$	—		SG&A	$	—	$	—
Sell USD/Buy GBP Forward Contract	—		234			SG&A	—			(59		)	SG&A	—		—
	$	65	$	199			$	(1	)	$	(59	)		$	—	$	—

The amount of gains related to the effective portion of derivative instruments designated as cash flow hedges included in AOCI within the Balance Sheets for the three months ended April 29, 2018 and April 30, 2017 was $0.1 million and $0.1 million, respectively. Any gains or losses under these contracts are expected to be realized and reclassified to selling, general and administrative expenses within the next nine months.

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Organization and Basis of Presentation (Policy)

3 Months Ended

Apr. 29, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Fiscal Year

Fiscal Year

The Company reports results on the basis of 52 and 53 week periods and ends its fiscal year on the last Sunday in January. The other quarters generally end on the last Sunday of April, July and October. All quarters consist of 13 weeks except for one 14-week period in the fourth quarter of 53-week years. The first quarter of fiscal years 2019 and 2018 each consisted of 13 weeks.

Principles of Consolidation

Principles of Consolidation

The accompanying interim unaudited consolidated financial statements have been prepared by the Company, in accordance with accounting principles generally accepted in the United States ("GAAP") and on the same basis as the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended January 28, 2018. In the opinion of the Company, these interim unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly, in all material respects, the financial position of the Company for the interim periods presented. All intercompany balances have been eliminated. Certain information and footnote disclosures normally included in annual consolidated financial statements have been condensed or omitted pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Because the interim unaudited consolidated financial statements do not include all of the information and notes required by GAAP for a complete set of consolidated financial statements, they should be read in conjunction with the audited consolidated financial statements and notes included in the Company's Annual Report on Form 10-K for the year ended January 28, 2018. The results reported in these interim unaudited consolidated financial statements should not be regarded as indicative of results that may be expected for any subsequent period or for the entire year.

The Company’s interim unaudited consolidated statements of income are referred to herein as the "Statements of Income." The Company’s interim unaudited consolidated balance sheets are referred to herein as the "Balance Sheets" and interim unaudited consolidated statements of cash flows as the "Statements of Cash Flows.

Segment Information

Segment Information

The Company’s Chief Executive Officer ("CEO") has been identified as the Chief Operating Decision Maker ("CODM") as defined by guidance regarding segment disclosures (see Note 13 for further discussion). Prior to the first quarter of fiscal year 2019, the Company had four operating segments. However as of April 29, 2018, the Company identified three operating segments that aggregate into one reportable segment, the Semiconductor Products Group.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Recent Accounting Pronouncements

Recent Accounting Standards Adopted

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Accounting Standards Codification ("ASC") 606), which requires an entity to recognize revenue from the transfer of control of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance addresses, in particular, contracts with more than one performance obligation, as well as the accounting for some costs to obtain or fulfill a contract with a customer, and provides for additional disclosures with respect to revenues and cash flows arising from contracts with customers.

The Company adopted the standard, effective January 29, 2018, using the modified retrospective transition method which resulted in an adjustment to retained earnings for the cumulative effect of applying the standard to all contracts not completed as of the adoption date. The primary change associated with the adoption relates to the Company’s sales to distributors with return or price adjustment rights where the Company will no longer defer revenue until the resale by the distributor to the end customer, but rather, will record revenue at the time control transfers to the distributor. The Company estimated the effects of returns and allowances provided to these distributors. Upon adoption, including the effect of income taxes, opening retained earnings as of January 29, 2018 increased by $11.1 million net, as a result of these changes. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

In October 2016, the FASB issued ASU No. 2016-16, Intra-Entity Asset Transfers Other Than Inventory (Topic 740). This accounting standard update is aimed at recognizing the income tax consequences of intra-entity transfers of assets other than inventory when they occur. This removes the exception to postpone the recognition of income tax consequences of intra-entity transfers until the asset has been sold to an outside party. In the first quarter of 2019, the Company adopted ASU 2016-16 using a modified retrospective transition method, resulting in a $1.8 million decrease in retained earnings, a $3.7 million net increase in deferred income tax assets, and a $5.5 million decrease in pre-paid taxes.

Accounting Guidance Issued but Not Adopted as of April 29, 2018

In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815). This standard addresses narrow issues identified as a result of the complexity associated with applying GAAP for certain financial instruments with characteristics of liabilities and equity. Part I addresses the complexity of accounting for certain financial instruments with down round features. Part II addresses the difficulty of navigating Topic 480, Distinguishing Liabilities from Equity, because of the existence of pending content in the ASC that results from the indefinite deferral of accounting requirements concerning mandatorily redeemable financial instruments of certain non-public entities and certain mandatorily redeemable non-controlling interests. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this pronouncement to have a material impact on the Company’s consolidated financial statements.

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815). The new standard is designed to refine and expand hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application of hedge accounting guidance. The new standard is effective for interim and annual fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption, including adoption in an interim period, is permitted. The Company is currently evaluating the impact this ASU will have on its consolidated condensed financial statements and disclosures.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which will require that substantially all leases be recognized by lessees on their balance sheets as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. The new standard also will result in enhanced quantitative and qualitative disclosures, including descriptions of significant judgments made by management, to provide greater insight into the extent of expense recognized and expected to be recognized from existing leases. The standard requires modified retrospective adoption and will be effective for the Company as of the beginning of fiscal year 2020. The Company expects the valuation of right of use assets and lease liabilities, previously described as operating leases, to be the present value of the Company's forecasted future lease commitments. The Company is continuing to assess the overall impacts of the new standard, including the discount rate to be applied in these valuations.

Earnings Per Share

Basic earnings per common share is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding during the reporting period. Diluted earnings per common share incorporates the incremental shares issuable, calculated using the treasury stock method, upon the assumed exercise of non-qualified stock options, the vesting of restricted stock units and performance unit awards if the conditions have been met.

Share-based Compensation, Warrant

The Warrant was issued by the Company to Comcast in connection with an agreement between the parties regarding the intended trial deployment by Comcast of a low-power wide-area Network ("LPWAN") in the United States, based on the Company’s LoRa® devices and wireless radio frequency technology. The Warrant is accounted for as equity and the cost is recognized as an offset to net sales over the respective performance period. The Warrant consists of five performance tranches. The cost associated with each tranche has been recognized based on the fair value at each reporting date until vesting which is the measurement date.

Share-based Compensation, Performance-based RSUs

The Company grants performance-based restricted stock units to select employees. The performance-based restricted stock units are valued as of the measurement date and expense is recognized on a straight line basis for the awards expected to vest based on the probability of attainment of the performance condition for each separately vesting portion of the award.

Fair Value of Financial Instruments

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis

The Company reduces the carrying amounts of its goodwill, intangible assets, long-lived assets and non-marketable equity securities to fair value when held for sale or determined to be impaired.

As of April 29, 2018 and January 28, 2018, the Company had not elected the fair value option for any financial assets and liabilities for which such an election would have been permitted.

The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Foreign currency forward contracts are valued using readily available foreign currency forward and interest rate curves. The fair value of each contract is determined by comparing the contract rate to the forward rate and discounting to the present value. Contracts in a gain position are recorded in the Balance Sheets within the caption "Other current assets" and the value of contracts in a loss position are recorded within the caption "Accrued liabilities" within the Balance Sheets. Please see Note 16 for further discussion of the Company’s derivative instruments.

The convertible debt is valued using probability weighted cash flows (Level 3 inputs).

The AptoVision Earn-out liability is valued utilizing estimates of annual revenue, adjusted earnings and product development targets (Level 3 inputs) through July 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Cycleo Earn-out liability (see Note 11) is valued utilizing estimates of annual revenue and operating income (Level 3 inputs) through April 2020. These estimates represent inputs for which market data are not available and are developed using the best information available about the assumptions that market participants would use when pricing the liability.

The Company measures contingent earn-out liabilities at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy. The Company uses a Monte Carlo valuation method as a valuation technique to determine the value of the earn-out liability. The significant unobservable inputs used in the fair value measurements are revenue projections over the earn-out period, and the probability outcome percentages assigned to each scenario. Significant increases or decreases to either of these inputs in isolation would result in a significantly higher or lower liability, with a higher liability capped by the contractual maximum of the contingent earn-out obligation. Ultimately, the liabilities will be equivalent to the amount paid, and the difference between the fair value estimate and amount paid will be recorded in earnings. For the Cycleo Earn-out and AptoVision Earn-out, these companies have business profiles comparable to a start-up company. Accordingly, their respective revenue projections are subject to significant revisions. This characteristic can result in volatile changes to the measurement of fair value for a given earn-out.

The Company reviews and re-assesses the estimated fair value of contingent consideration on a recurring basis, and the updated fair value could differ materially from the previous estimates. Changes in the estimated fair value of the Company’s contingent earn-out liabilities related to the time component of the present value calculation are reported in "Interest expense" within the Statements of Income. Adjustments to the estimated fair value related to changes in all other unobservable inputs are reported in operating income.

Instruments Not Recorded at Fair Value on a Recurring Basis

Some of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate fair value due to their liquid or short-term nature. Such financial assets and financial liabilities include: cash and cash equivalents, net receivables, certain other assets, accounts payable, accrued expenses, accrued personnel costs, and other current liabilities.

The Company’s long-term debt is not recorded at fair value on a recurring basis, but is measured at fair value for disclosure purposes.

Inventory

Inventories, consisting of material, material overhead, labor, and manufacturing overhead, are stated at the lower of cost (first-in, first-out) or market

Interest and Penalties on Unrecognized Tax Benefits

The Company’s policy is to include net interest and penalties related to unrecognized tax benefits within the "Provision for taxes" in the Statements of Income.

Commitments and Contingencies

In accordance with accounting standards regarding loss contingencies, the Company accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable and the amount can be reasonably estimated. The Company also discloses the amount accrued and the amount of a reasonably possible loss in excess of the amount accrued, if such disclosure is necessary for its consolidated financial statements not to be misleading. The Company does not record liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated, or when the liability is believed to be only reasonably possible or remote. The Company evaluates, at least quarterly, developments in its legal matters that could affect the amount of liability that has been previously accrued, and makes adjustments as appropriate. Significant judgment is required to determine both probability and the estimated amount. The Company may be unable to estimate a possible loss or range of possible loss due to various reasons, including, among others: (i) if the damages sought are indeterminate; (ii) if the proceedings are in early stages, (iii) if there is uncertainty as to the outcome of pending appeals, motions or settlements, (iv) if there are significant factual issues to be determined or resolved, and (v) if there are novel or unsettled legal theories presented. In such instances, there is considerable uncertainty regarding the ultimate resolution of such matters, including a possible eventual loss, if any.

Because the outcomes of litigation and other legal matters are inherently unpredictable, the Company’s evaluation of legal matters or proceedings often involves a series of complex assessments by management about future events and can rely heavily on estimates and assumptions. While the consequences of certain unresolved matters and proceedings are not presently determinable, and an estimate of the probable and reasonably possible loss or range of loss in excess of amounts accrued for such proceedings cannot be reasonably made, an adverse outcome from such proceedings could have a material adverse effect on the Company’s earnings in any given reporting period. However, in the opinion of management, after consulting with legal counsel, any ultimate liability related to current outstanding claims and lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company’s consolidated financial statements, as a whole. However, legal matters are inherently unpredictable and subject to significant uncertainties, some of which are beyond the Company’s control.

Product Warranties

Product Warranties

The Company’s general warranty policy provides for repair or replacement of defective parts. In some cases, a refund of the purchase price is offered. In certain instances the Company has agreed to other or additional warranty terms, including indemnification provisions.

The product warranty accrual reflects the Company’s best estimate of probable liability under its product warranties. The Company accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified issues based on historical experience. Historically, warranty expense has been immaterial to the Company’s consolidated financial statements

Derivatives

The Company’s accounting treatment for these instruments is based on whether or not the instruments are designated as a hedging instrument. The Company is currently applying hedge accounting to all foreign currency derivatives and has designated these hedges as cash flow hedges.

These contracts met the criteria for cash flow hedges and the unrealized gains or losses, after tax, are recorded as a component of "Accumulated other comprehensive loss" within the Balance Sheet. The effective portions of cash flow hedges are recorded in accumulated other comprehensive income or loss ("AOCI") until the hedged item is recognized in selling, general and administrative ("SG&A") expense within the Statements of Income when the underlying hedged expense is recognized. Any ineffective portions of cash flow hedges are recorded in "Non-operating expense, net" within the Company’s Statements of Income. The Company presents its derivative assets and liabilities at their gross fair values on the Balance Sheets.

Revenue

The Company derives its revenue primarily from the sale of semiconductor products into various end markets. Revenue is recognized when control of these products is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for these products. Control is generally transferred when products are shipped and, to a lesser extent, when the products are delivered. Recovery of costs associated with product design and engineering services are recognized during the period in which services are performed and are reported as a reduction to product development and engineering expense. Historically, these recoveries have not exceeded the cost of the related development efforts. The Company includes revenue related to granted technology licenses as part of "Net sales." Historically, revenue from these arrangements has not been significant though it is part of its recurring ordinary business.

The Company determines revenue recognition through the following five steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligations in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligations in the contract

• Recognition of revenue when, or as, performance obligations are satisfied

The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable.

The Company’s revenue contracts generally represent a single performance obligation to sell its products to trade customers. Net sales reflect the transaction prices for contracts, which include units shipped at selling prices reduced by variable consideration. Determination of variable consideration requires judgment by the Company. Variable consideration includes expected sales returns and other price adjustments. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. Sales returns are generally accepted at the Company’s discretion or from distributors with such rights. The Company’s contracts with trade customers do not have significant financing components or non-cash consideration. The Company records net sales excluding taxes collected on its sales to its trade customers.

The Company provides an assurance type warranty which is typically not sold separately and does not represent a separate performance obligation. The Company’s payment terms are generally aligned with shipping terms.

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Revenue (Tables)

3 Months Ended

Apr. 29, 2018

Revenue from Contract with Customer [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following presents the amounts by which financial statement line items were affected in the current period due to the adoption of ASC 606 as compared with the guidance that was in effect before the change:

	Three Months Ended
Statements of Income	April 29, 2018
(in thousands, except per share amounts)	Increase/(decrease)
Net sales	$	4,462
Cost of sales	1,016
Provision for taxes	724
Net income	2,722
Earnings per share:
Basic	$	0.04
Diluted	$	0.04

Balance Sheets	April 29, 2018
(in thousands)	Increase/(decrease)
Deferred revenue	$	(15,737	)

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Earnings Per Share (Tables)

3 Months Ended

Apr. 29, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Common Share

The computation of basic and diluted earnings per common share was as follows:

	Three Months Ended
(in thousands, except per share amounts)	April 29, 2018		April 30, 2017
Net income	$	12,382	$	11,821
Weighted average common shares outstanding - basic	66,324		65,839
Dilutive effect of stock options and restricted stock units	1,871		1,537
Weighted average common shares outstanding - diluted	68,195		67,376
Basic earnings per common share	$	0.19	$	0.18
Diluted earnings per common share	$	0.18	$	0.18
Anti-dilutive shares not included in the above calculations	146		686

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Share-Based Compensation (Tables)

3 Months Ended

Apr. 29, 2018

Share-based Compensation [Abstract]

Allocation Of Stock-Based Compensation

The following table summarizes pre-tax share-based compensation included in the Statements of Income for the three months ended April 29, 2018 and April 30, 2017.

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Revenue offset	$	21,501	$	5,280
Cost of sales	328		564
Selling, general and administrative	11,462		5,557
Product development and engineering	2,225		1,885
Share-based compensation	$	35,516	$	13,286
Net change in share-based compensation capitalized into inventory	$	—	$	(414	)

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Investments (Tables)

3 Months Ended

Apr. 29, 2018

Investments [Abstract]

Summary Of Investments

The following table summarizes the Company’s available-for-sale securities:

	April 29, 2018						January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Gross Unrealized Gain		Market Value		Adjusted Cost		Gross Unrealized Gain
Convertible debt	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—
Total other assets	$	2,500	$	2,500	$	—	$	1,960	$	1,960	$	—

Schedule Of Investments, Classified By Maturity Period

The following table summarizes the maturities of the Company’s available-for-sale securities:

	April 29, 2018				January 28, 2018
(in thousands)	Market Value		Adjusted Cost		Market Value		Adjusted Cost
Within 1 year	$	2,000	$	2,000	$	1,960	$	1,960
After 1 year through 5 years	500		500		—		—
Total investments	$	2,500	$	2,500	$	1,960	$	1,960

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Fair Value Measurements (Tables)

3 Months Ended

Apr. 29, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Financial assets and liabilities measured and recorded at fair value on a recurring basis were presented within the Company's Balance Sheets as follows:

	Fair Value as of April 29, 2018								Fair Value as of January 28, 2018
(in thousands)	Total		(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)
Financial assets:
Cash equivalents	$	30,000	$	30,000	$	—	$	—	$	—	$	—	$	—	$	—
Derivative financial instruments	64		—		64		—		—		—		—		—
Convertible debt	2,500		—		—		2,500		1,960		—		—		1,960
Total financial assets	$	32,564	$	30,000	$	64	$	2,500	$	1,960	$	—	$	—	$	1,960
Financial liabilities:
AptoVision Earn-out	$	21,000	$	—	$	—	$	21,000	$	21,000	$	—	$	—	$	21,000
Cycleo Earn-out	668		—		—		668		668		—		—		668
Total financial liabilities	$	21,668	$	—	$	—	$	21,668	$	21,668	$	—	$	—	$	21,668

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

A reconciliation of the change in the earn-out liability during the three months ended April 29, 2018 is as follows:

(in thousands)	AptoVision		Cycleo		Total
Balance at January 28, 2018	$	21,000	$	668	$	21,668
Changes in the fair value of contingent earn-out obligations	—		—		—
Current acquisitions	—		—		—
Payments	—		—		—
Balance as of April 29, 2018	$	21,000	$	668	$	21,668

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Inventories (Tables)

3 Months Ended

Apr. 29, 2018

Inventory Disclosure [Abstract]

Summary Of Inventories

Inventories, consisting of material, material overhead, labor, and manufacturing overhead, are stated at the lower of cost (first-in, first-out) or market and consist of the following:

(in thousands)	April 29, 2018		January 28, 2018
Raw materials	$	1,583	$	1,651
Work in progress	42,078		46,884
Finished goods	21,797		22,532
Inventories	$	65,458	$	71,067

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Apr. 29, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amounts of Goodwill

Changes in the carrying amount of goodwill by applicable reporting unit were as follows:

(in thousands)	Signal Integrity		Wireless and Sensing		Total
Balance at January 28, 2018	$	274,085	$	67,812	$	341,897
Additions	—		—		—
Balance at April 29, 2018	$	274,085	$	67,812	$	341,897

Schedule of Finite-lived Intangible Assets Acquired

The following table sets forth the Company’s finite-lived intangible assets resulting from business acquisitions, which continue to be amortized:

		April 29, 2018							January 28, 2018
(in thousands)	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core technologies	5-8 years	$	164,930	$	(121,156	)	$	43,774	$	164,930	$	(115,628	)	$	49,302
Customer relationships	3-10 years	34,031		(26,859		)	7,172		34,031		(25,426		)	8,605
Total finite-lived intangible assets		$	198,961	$	(148,015	)	$	50,946	$	198,961	$	(141,054	)	$	57,907

Amortization expenses recorded in the Statements of Income for each period were as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Core technologies	$	5,528	$	5,186
Customer relationships	1,433		1,100
Total amortization expense	$	6,961	$	6,286

Schedule of Indefinite-Lived Intangible Assets

The following table sets forth the Company’s indefinite-lived intangible assets resulting from additions to IPR&D:

(in thousands)	Net Carrying Value
Value at January 28, 2018	$	2,300
In-process research and development through acquisitions	—
Value at April 29, 2018	$	2,300

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Credit Facilities (Tables)

3 Months Ended

Apr. 29, 2018

Debt Instruments [Abstract]

Schedule Maturities of Current and Long-term Term Loans

Scheduled maturities of current and long-term Term Loans are as follows:

(in thousands)
Fiscal Year Ending:
2019	$	12,188
2020	18,750
2021	19,687
2022	76,875
Total debt	$	127,500

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Income Taxes (Tables)

3 Months Ended

Apr. 29, 2018

Income Tax Disclosure [Abstract]

Summary of Income Tax Contingencies

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (before federal impact of state items) is as follows:

(in thousands)
Balance at January 28, 2018	$	16,059
Additions based on tax positions related to the current year	733
Balance as of April 29, 2018	$	16,792

Liability For Uncertain Tax Positions

The liability for UTP is reflected within the Balance Sheets as follows:        

(in thousands)	April 29, 2018		January 28, 2018
Deferred tax assets - non-current	$	12,252	$	12,135
Other long-term liabilities	4,540		3,924
Total accrued taxes	$	16,792	$	16,059

Regional Income (Loss) From Continuing Operations Before Income Taxes

The Company’s regional income from continuing operations before taxes and equity in net losses of equity method investments is as follows:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Domestic	$	(7,700	)	$	(4,167	)
Foreign	2,603			19,745
Total	$	(5,097	)	$	15,578

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Commitments and Contingencies (Tables)

3 Months Ended

Apr. 29, 2018

Commitments and Contingencies Disclosure [Abstract]

Summary of Earn-out Liabilities by Classification

A summary of earn-out liabilities, included in "Accrued liabilities" and "Other long-term liabilities", by classification follows:

	Balance at April 29, 2018						Balance at January 28, 2018
(in thousands)	Cycleo		AptoVision		Total		Cycleo		AptoVision		Total
Compensation expense	$	4,806	$	—	$	4,806	$	4,408	$	—	$	4,408
Not conditional upon continued employment	668		21,000		21,668		668		21,000		21,668
Interest expense	444		—		444		444		—		444
Total liability	$	5,918	$	21,000	$	26,918	$	5,520	$	21,000	$	26,520
Amount expected to be settled within twelve months	$	2,155	$	8,688	$	10,843

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Concentration of Risk (Tables)

3 Months Ended

Apr. 29, 2018

Customer Concentration Risk [Member]

Concentration Risk [Line Items]

Schedule Of Significant Customers Accounting For At Least 10% Of Net Sales

The following significant customers accounted for at least 10% of net sales in one or more of the periods indicated:

	Three Months Ended
(percentage of net sales)	April 29, 2018		April 30, 2017
Arrow Electronics (and affiliates)	12	%	9	%
Trend-tek Technology Ltd (and affiliates)	12	%	10	%
Samsung Electronics (and affiliates)	8	%	7	%
Premier Technical Sales Korea, Inc. (and affiliates) (1)	5	%	7	%

⁽¹⁾ Premier is a distributor with a concentration of sales to Samsung. The above percentages represent the Company's estimate of the sales activity related to Samsung that is passing through this distributor.

The following table shows the customers that have an outstanding receivable balance that represents at least 10% of total net receivables for the periods indicated:

	Balance as of
(percentage of net sales)	April 29, 2018		January 28, 2018
Trend-tek Technology Ltd (and affiliates)	12	%	8	%
Frontek Technology Corporation	10	%	9	%

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Segment Information (Tables)

3 Months Ended

Apr. 29, 2018

Segment Reporting Information [Line Items]

Net Sales by Segment

Net sales by segment are as follows:

	Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017
Semiconductor Products Group	$	130,429	$	143,802
Total	$	130,429	$	143,802

Income by Segment and Reconciliation to Consolidated Operating Income

Income by segment and reconciliation to consolidated operating income:

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Semiconductor Products Group	$	40,812		$	39,222
Operating income by segment	40,812			39,222
Items to reconcile segment operating income to consolidated income before taxes
Share-based compensation	35,516			13,286
Intangible amortization	6,961			6,286
Other non-segment related expenses	1,432			1,204
Amortization of fair value adjustments related to acquired property, plant and equipment	—			190
Interest expense, net	2,190			2,046
Non-operating expense, net	(190		)	632
(Loss) income before taxes	$	(5,097	)	$	15,578

Net Sales Activity By Product Line

The table below provides net sales activity by product line on a comparative basis:

	Three Months Ended
(in thousands, except percentages)	April 29, 2018					April 30, 2017
Signal Integrity	$	65,599		50	%	$	68,058		49	%
Protection	40,792			31	%	42,249			29	%
Wireless and Sensing	45,539			35	%	38,775			26	%
Other: Warrant Shares (1)	(21,501		)	(16	)%	(5,280		)	(4	)%
Total net sales	$	130,429		100	%	$	143,802		100	%

Schedule of Revenue from External Customers by Sales Channel

	Three Months Ended
(in thousands)	April 29, 2018			April 30, 2017
Distributor	$	111,340		$	100,542
Direct	40,590			48,540
Other: Warrant Shares	(21,501		)	(5,280		)
Total net sales	$	130,429		$	143,802

Net Sales Activity By Geographic Region

Net sales activity by geographic region is as follows:

	Three Months Ended
	April 29, 2018		April 30, 2017
Asia-Pacific	68	%	75	%
North America	27	%	22	%
Europe	9	%	7	%
Other: Warrant Shares	(4	)%	(4	)%
	100	%	100	%

Summary Of Sales Activity To Countries That Represented Greater Than 10% Of Total Net Sales

The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods presented:

	Three Months Ended
(percentage of total sales)	April 29, 2018		April 30, 2017
China (including Hong Kong)	50	%	52	%
United States	14	%	9	%

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Stock Repurchase Program (Tables)

3 Months Ended

Apr. 29, 2018

Equity [Abstract]

Class of Treasury Stock

The following table summarizes activity under the program for the presented periods:

	Three Months Ended
	April 29, 2018			April 30, 2017
(in thousands, except number of shares)	Shares	Value		Shares	Value
Shares repurchased under the stock repurchase program	645,114	$	25,325	300,000	$	9,961
Total treasury shares required	645,114	$	25,325	300,000	$	9,961

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Restructuring (Tables)

3 Months Ended

Apr. 29, 2018

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

Activity under the restructuring plans is summarized in the following table:

(in thousands)	One-time employee termination benefits			Contract commitments			Total
Balance at January 28, 2018	$	4,063		$	686		$	4,749
Charges	346			—			346
Cash payments	(2,691		)	(149		)	(2,840		)
Balance at April 29, 2018	$	1,718		$	537		$	2,255

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Derivatives and Hedging Activities (Tables)

3 Months Ended

Apr. 29, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Open Foreign Currency Contracts

At April 29, 2018, the Company had the following outstanding foreign exchange contracts:

(in thousands)
Foreign Exchange Contracts	Number of Instruments	Sell Notional Value		Buy Notional Value
Sell USD/Buy CAD Forward Contract	9	$	12,829	C$	16,500
Total	9

Summary of the Carrying Values of Derivative Instruments

The table below summarizes the carrying values of derivative instruments as of April 29, 2018:

	Carrying Values of Derivative Instruments as of April 29, 2018
(in thousands)	Fair Value - Assets (2)		Fair Value - (Liabilities) (2)		Derivative Net Carrying Value
Derivatives designated as hedging instruments
Foreign exchange contracts (1)	$	64	$	—	$	64
Total derivatives	$	64	$	—	$	64

⁽¹⁾ Assets are included in "Other current assets" and liabilities are included in "Accrued liabilities" within the Balance Sheets.

⁽²⁾ The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Please refer to Note 6.

Summary of Gain (Loss) Recognized From Derivative Instruments

The following table summarizes the amount of income recognized from derivative instruments for the three months ended April 29, 2018 and April 30, 2017 as well as the line items within the accompanying Statements of Income where the results are recorded for cash flow hedges:

	Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)					Location of Gain or Loss into Income (Effective Portion)	Amount of Gain Reclassified from AOCI into Income (Effective Portion)						Location of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or Loss Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	Three Months Ended						Three Months Ended							Three Months Ended
(in thousands)	April 29, 2018		April 30, 2017				April 29, 2018			April 30, 2017				April 29, 2018		April 30, 2017
Sell USD/Buy CAD Forward Contract	$	65	$	(35	)	SG&A	$	(1	)	$	—		SG&A	$	—	$	—
Sell USD/Buy GBP Forward Contract	—		234			SG&A	—			(59		)	SG&A	—		—
	$	65	$	199			$	(1	)	$	(59	)		$	—	$	—

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Organization and Basis of Presentation (Fiscal Year) (Details)	3 Months Ended
	Apr. 29, 2018 weeks week	Apr. 30, 2017 weeks
52 Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in the fiscal year reporting period	52
Number of weeks in a quarter for 52 week fiscal period	13	13
53 Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in the fiscal year reporting period	53
Number of weeks in the 4th quarter for 53 week fiscal period | week	14

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Organization and Basis of Presentation (Segment Information) (Details)	3 Months Ended	12 Months Ended
	Apr. 29, 2018 reportable_segment operating_segment	Jan. 28, 2018 operating_segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments | operating_segment	3	4
Number of reportable segments | reportable_segment	1

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Organization and Basis of Presentation (Recent Accounting Pronouncements) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Jan. 28, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Document Fiscal Year Focus	2019
Retained earnings	$ 524,238	$ 502,346
Prepaid taxes	12,874	$ 11,809
Accounting Standards Update 2014-09 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	11,100
Accounting Standards Update 2016-16 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	1,800
Deferred tax assets	3,700
Prepaid taxes	$ 5,500

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Revenue (Effect of Adoption on Financial Statements) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017	Jan. 28, 2018
Statements of Income
Net sales	$ 130,429	$ 143,802
Cost of sales	58,960	58,887
Provision for taxes	(17,510)	3,757
Net income	$ 12,382	$ 11,821
Basic (in dollars per share)	$ 0.19	$ 0.18
Diluted (in dollars per share)	$ 0.18	$ 0.18
Balance Sheets
Other current assets	$ 20,143		$ 17,250
Accrued liabilities	54,400		60,832
Deferred revenue	4,973		$ 12,758
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Statements of Income
Net sales	4,462
Cost of sales	1,016
Provision for taxes	724
Net income	$ 2,722
Basic (in dollars per share)	$ 0.04
Diluted (in dollars per share)	$ 0.04
Balance Sheets
Deferred revenue	$ (15,737)

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Earnings Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 12,382	$ 11,821
Weighted average common shares outstanding - basic	66,324	65,839
Dilutive effect of options and restricted stock units	1,871	1,537
Weighted average common shares outstanding - diluted	68,195	67,376
Basic earnings per common share (in dollars per share)	$ 0.19	$ 0.18
Diluted earnings per common share (in dollars per share)	$ 0.18	$ 0.18
Anti-dilutive shares not included in the above calculations	146	686

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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions			3 Months Ended
	Apr. 27, 2018 shares	Oct. 05, 2016 shares	Apr. 29, 2018 USD ($) employee $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares subject to purchase under warrants		1,086,957
Warrants vested (in shares)	586,956
Warrant vesting costs | $			$ 21.5
Warrant vesting costs due to acceleration | $			$ 15.9
Number of securities called by warrants (in shares)			869,565
Document Fiscal Year Focus			2019
Number of shares affected (in shares)			159,000
Number of employees affected | employee			8
Additional compensation cost | $			$ 2.8
Market Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards granted			200,442
Description of award vesting rights			one-third of the awards vesting each performance period
Performance Period One | Market Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period			1 year
Grant date fair value per unit | $ / shares			$ 33.02
Performance Period Two | Market Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period			2 years
Grant date fair value per unit | $ / shares			$ 34.85
Performance Period Three | Market Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period			3 years
Grant date fair value per unit | $ / shares			$ 36.52

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Share-Based Compensation - Allocation of Share-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 35,516	$ 13,286
Inventories [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Net change in share-based compensation capitalized into inventory	0	(414)
Revenue Offset [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	21,501	5,280
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	328	564
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	11,462	5,557
Product Development And Engineering [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 2,225	$ 1,885

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Investments - Narrative (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Other Assets [Member]
Investment [Line Items]
Total investment in a private entity	$ 30,000
Restricted deposits	3,000
Agency Securities [Member] | Level 1 [Member]
Investment [Line Items]
Investments in money market funds	$ 30,004	$ 0

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Investments - Summary Of Investments (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Investment [Line Items]
Available-for-sale securities, market value	$ 2,500	$ 1,960
Available-for-sale securities, adjusted cost	2,500	1,960
Available-for-sale securities, gross unrealized gain	0	0
Convertible debt
Investment [Line Items]
Available-for-sale securities, market value	2,500	1,960
Available-for-sale securities, adjusted cost	2,500	1,960
Available-for-sale securities, gross unrealized gain	$ 0	$ 0

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Investments - Summary of Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Investment [Line Items]
Available-for-sale securities, market value	$ 2,500	$ 1,960
Available-for-sale securities, adjusted cost	2,500	1,960
Within 1 Year [Member]
Investment [Line Items]
Available-for-sale securities, market value	2,000	1,960
Available-for-sale securities, adjusted cost	2,000	1,960
After 1 Year Through 5 Years [Member]
Investment [Line Items]
Available-for-sale securities, market value	500	0
Available-for-sale securities, adjusted cost	$ 500	$ 0

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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Term Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt	$ 127,500
Level 2 [Member] | Term Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt		$ 131,300
Level 2 [Member] | Revolving Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	$ 97,000	$ 97,000

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Fair Value Measurements - Financial Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Agency Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	$ 30,004	$ 0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	64	0
Total financial assets	32,564	1,960
Total financial liabilities	21,668	21,668
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	30,000	0
Total financial liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	64	0
Total financial assets	64	0
Total financial liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	2,500	1,960
Total financial liabilities	21,668	21,668
Fair Value, Measurements, Recurring [Member] | Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	30,000	0
Fair Value, Measurements, Recurring [Member] | Agency Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	30,000	0
Fair Value, Measurements, Recurring [Member] | Agency Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Agency Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Convertible debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	2,500	1,960
Fair Value, Measurements, Recurring [Member] | Convertible debt | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Convertible debt | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Convertible debt | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	2,500	1,960
Fair Value, Measurements, Recurring [Member] | AptoVision Technologies Inc.
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	21,000	21,000
Fair Value, Measurements, Recurring [Member] | AptoVision Technologies Inc. | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | AptoVision Technologies Inc. | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | AptoVision Technologies Inc. | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	21,000	21,000
Fair Value, Measurements, Recurring [Member] | Cycleo
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	668	668
Fair Value, Measurements, Recurring [Member] | Cycleo | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Cycleo | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Cycleo | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	$ 668	$ 668

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Fair Value Measurements - Level 3 Reconciliation of the Earn-out Liability (Details) $ in Thousands	3 Months Ended
	Apr. 29, 2018 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 21,668
Changes in the fair value of contingent earn-out obligations	0
Current acquisitions	0
Payments	0
Ending balance	21,668
AptoVision Technologies Inc.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	21,000
Changes in the fair value of contingent earn-out obligations	0
Current acquisitions	0
Payments	0
Ending balance	21,000
Cycleo
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	668
Changes in the fair value of contingent earn-out obligations	0
Current acquisitions	0
Payments	0
Ending balance	$ 668

XML

Inventories - Summary of Inventories (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 1,583	$ 1,651
Work in progress	42,078	46,884
Finished goods	21,797	22,532
Inventories	$ 65,458	$ 71,067

XML

Goodwill and Intangible Assets - Narrative (Details) $ in Thousands	3 Months Ended
	Apr. 29, 2018 USD ($)
Wireless and Sensing [Member]
Goodwill [Line Items]
Goodwill, Transferred from Other Product Group	$ 49,400

XML

Goodwill and Intangible Assets - Changes in Carrying Amounts of Goodwill (Details) $ in Thousands	3 Months Ended
	Apr. 29, 2018 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 341,897
Additions	0
Ending balance	341,897
Signal Integrity [Member]
Goodwill [Roll Forward]
Beginning balance	274,085
Additions	0
Ending balance	274,085
Wireless and Sensing [Member]
Goodwill [Roll Forward]
Beginning balance	67,812
Additions	0
Ending balance	$ 67,812

XML

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Jan. 28, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 198,961	$ 198,961
Accumulated amortization	(148,015)	(141,054)
Net carrying amount	50,946	57,907
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	164,930	164,930
Accumulated amortization	(121,156)	(115,628)
Net carrying amount	$ 43,774	49,302
Core Technologies [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	5 years
Core Technologies [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	8 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 34,031	34,031
Accumulated amortization	(26,859)	(25,426)
Net carrying amount	$ 7,172	$ 8,605
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years

XML

Goodwill and Intangible Assets - Schedule of Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Goodwill [Line Items]
Intangible amortization	$ 6,961	$ 6,286
Core Technologies [Member]
Goodwill [Line Items]
Intangible amortization	5,528	5,186
Customer Relationships [Member]
Goodwill [Line Items]
Intangible amortization	$ 1,433	$ 1,100

XML

Goodwill and Intangible Assets - Schedule of Indefinite-lived Intangible Assets Resulting From Additions to IPR&D (Details) $ in Thousands	3 Months Ended
	Apr. 29, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance, net carrying amount	$ 2,300
In-process research and development through acquisitions	0
Ending balance, net carrying amount	$ 2,300

XML

Credit Facilities - Narrative (Details) - USD ($)	Nov. 15, 2016	Apr. 29, 2018
Facilities, maximum borrowing capacity	$ 400,000,000
Maturity date of term loans and revolving commitments	Nov. 12, 2021
Facilities, amount outstanding	$ 247,000,000
Percentage of equity interest in direct non-U.S. subsidiaries that are included as pledged assets	65.00%
Minimum lenders represented as percentage of revolving commitments and outstanding term loans that may demand repayment in event of default	50.00%
Minimum [Member]
Interest coverage ratio	3.00
Total leverage ratio following a material acquisition	3.25
Maximum [Member]
Total leverage ratio	3.00
Total leverage ratio following a material acquisition	3.50
Base Rate [Member]
Description of variable rate basis	The "Base Rate" is equal to a fluctuating rate equal to the highest of (a) the prime rate of the administrative agent, (b) ½ of 1% above the federal funds effective rate published by the Federal Reserve Bank of New York and (c) one-month LIBOR (determined with respect to deposits in U.S. Dollars) plus 1%.
Base Rate [Member] | Minimum [Member]
Basis spread on variable rate	0.25%
Base Rate [Member] | Maximum [Member]
Basis spread on variable rate	1.25%
LIBOR [Member]
Basis spread on variable rate	1.00%
LIBOR [Member] | Minimum [Member]
Basis spread on variable rate	1.25%
LIBOR [Member] | Maximum [Member]
Basis spread on variable rate	2.25%
Federal Funds [Member]
Basis spread on variable rate	1.00%
Term Loans [Member]
Facilities, maximum borrowing capacity	$ 150,000,000
Facilities, amount outstanding	150,000,000
Interest rate payable at period end		3.51%
Swingline Loans [Member]
Facilities, maximum borrowing capacity	25,000,000
Facilities, amount outstanding		$ 0
Revolving Loans and Letters of Credit in Certain Foreign Currencies [Member]
Facilities, maximum borrowing capacity	40,000,000
Facilities, amount outstanding		0
Letter of Credit [Member]
Facilities, maximum borrowing capacity	$ 40,000,000
Facilities, amount outstanding		$ 0
Fronting fee percentage for each letter of credit issued	0.125%
Revolving Loans [Member]
Facilities, maximum borrowing capacity	$ 250,000,000
Facilities, amount outstanding	97,000,000
Undrawn revolving commitments	$ 153,000,000
Interest rate payable at period end		3.51%
Unused borrowing capacity		$ 153,000,000
Revolving Loans [Member] | Minimum [Member]
Facilities, unused capacity, commitment fee percentage	0.20%
Revolving Loans [Member] | Maximum [Member]
Facilities, unused capacity, commitment fee percentage	0.45%
Additional Term Loan Facilities Or Revolving Commitments [Member]
Facilities, maximum borrowing capacity	$ 150,000,000
United States of America, Dollars [Member]
Description of variable rate basis	(1) the Base Rate (as defined below) plus a margin ranging from 0.25% to 1.25% depending upon the Company's consolidated leverage ratio or (2) LIBOR (determined with respect to deposits in U.S. Dollars) for an interest period to be selected by the Company plus a margin ranging from 1.25% to 2.25% depending upon the Company's consolidated leverage ratio (such margin, the "Applicable Margin").

XML

Credit Facilities - Scheduled Maturities of Term Loans (Details) - Term Loans [Member] $ in Thousands	Apr. 29, 2018 USD ($)
Debt Instrument [Line Items]
2019	$ 12,188
2020	18,750
2021	19,687
2022	76,875
Total debt	$ 127,500

XML

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 29, 2018	Jan. 28, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%
Increase (decrease) In global tax rate, percent	10.50%
Income tax benefit	$ 15.8
Percentage of uncertain tax positions evaluating criteria	50.00%
Net tax benefits, if recognized, would impact the effective tax rate	$ 4.5	$ 3.9

XML

Income Taxes - Summary of Income Tax Contingencies (Details) $ in Thousands	3 Months Ended
	Apr. 29, 2018 USD ($)
Income Tax Contingency [Line Items]
Beginning balance	$ 16,059
Additions based on tax positions related to the current year	733
Ending balance	$ 16,792

XML

Income Taxes - Liability For Uncertain Tax Positions (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Income Tax Contingency [Line Items]
Liability for UTP	$ 16,792	$ 16,059
Non-current deferred tax asset [Member]
Income Tax Contingency [Line Items]
Liability for UTP	12,252	12,135
Other long-term liabilities [Member]
Income Tax Contingency [Line Items]
Liability for UTP	$ 4,540	$ 3,924

XML

Income Taxes - Regional Income (Loss) From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Income Tax Disclosure [Abstract]
Domestic	$ (7,700)	$ (4,167)
Foreign	2,603	19,745
(Loss) income before taxes and equity in net losses of equity method investments	$ (5,097)	$ 15,578

XML

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018	Jul. 01, 2017
Commitments and Contingencies [Line Items]
Earn-out liability booked	$ 26,918	$ 26,520
Amount expected to be settled within twelve months	10,843
Cycleo
Commitments and Contingencies [Line Items]
Potential payments under earn-out arrangements, high estimate	16,000
Earn-out liability booked	5,918	5,520
Amount expected to be settled within twelve months	2,155
AptoVision Technologies Inc.
Commitments and Contingencies [Line Items]
Earn-out liability booked	21,000	$ 21,000
Amount expected to be settled within twelve months	8,688
Minimum [Member] | Environmental Issue
Commitments and Contingencies [Line Items]
Loss contingency, estimate of possible loss	4,100
Maximum [Member] | AptoVision Technologies Inc.
Commitments and Contingencies [Line Items]
Potential payments under earn-out arrangements, high estimate			$ 47,000
Maximum [Member] | Environmental Issue
Commitments and Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 7,200

XML

Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands	Apr. 29, 2018	Jan. 28, 2018
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 26,918	$ 26,520
Amount expected to be settled within twelve months	10,843
Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,806	4,408
Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	21,668	21,668
Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	444	444
Cycleo
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	5,918	5,520
Amount expected to be settled within twelve months	2,155
Cycleo | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,806	4,408
Cycleo | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	668	668
Cycleo | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	444	444
AptoVision Technologies Inc.
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	21,000	21,000
Amount expected to be settled within twelve months	8,688
AptoVision Technologies Inc. | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
AptoVision Technologies Inc. | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	21,000	21,000
AptoVision Technologies Inc. | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 0	$ 0

XML

Concentration of Risk - Narrative (Details)	3 Months Ended		12 Months Ended
	Apr. 29, 2018	Apr. 30, 2017	Jan. 28, 2018
Concentration Risk [Line Items]
Description of geographic concentration risk related to distributors	For the third quarter of fiscal year 2018, our two largest distributors were based in Asia.
Accounts Receivable [Member]
Concentration Risk [Line Items]
Minimum concentration risk threshold	10.00%		10.00%
Net sales [Member]
Concentration Risk [Line Items]
Minimum concentration risk threshold	10.00%
Concentration risk, percentage	100.00%	100.00%
Net sales [Member] | Distributor concentration risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	69.00%	64.00%
China | Cost of Silicon Wafers [Member] | Supplier concentration risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	21.00%

XML

Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details)		3 Months Ended		12 Months Ended
		Apr. 29, 2018	Apr. 30, 2017	Jan. 28, 2018
Net sales [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		100.00%	100.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Trend-tek Technology Ltd And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		12.00%		8.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Frontek Technology Corporation [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%		9.00%
Customer Concentration Risk [Member] | Net sales [Member] | Arrow Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		12.00%	9.00%
Customer Concentration Risk [Member] | Net sales [Member] | Trend-tek Technology Ltd And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		12.00%	10.00%
Customer Concentration Risk [Member] | Net sales [Member] | Samsung Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		8.00%	7.00%
Customer Concentration Risk [Member] | Net sales [Member] | Premier Technical Sales Korea, Inc. And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	[1]	5.00%	7.00%

[1] Premier is a distributor with a concentration of sales to Samsung. The above percentages represent the Company's estimate of the sales activity related to Samsung that is passing through this distributor.

XML

Segment Information - Narrative (Details)	3 Months Ended	12 Months Ended
	Apr. 29, 2018 reportable_segment operating_segment	Jan. 28, 2018 operating_segment
Segment Reporting Information [Line Items]
Number of operating segments | operating_segment	3	4
Number of reportable segments | reportable_segment	1
Net sales [Member]
Segment Reporting Information [Line Items]
Minimum concentration risk threshold	10.00%

XML

Segment Information - Net Sales Activity by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Revenue from External Customer [Line Items]
Net sales	$ 130,429	$ 143,802
Semiconductor Products Group [Member]
Revenue from External Customer [Line Items]
Net sales	$ 130,429	$ 143,802

XML

Segment Information - Income by Segment and Reconciliation to Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Segment Reporting Information [Line Items]
Operating income	$ (3,097)	$ 18,256
Items to reconcile segment operating income to consolidated income before taxes
Share-based compensation	35,516	13,286
Intangible amortization	6,961	6,286
Interest expense, net	2,190	2,046
Non-operating expense, net	(190)	632
(Loss) income before taxes and equity in net losses of equity method investments	(5,097)	15,578
Corporate, Non-Segment [Member]
Items to reconcile segment operating income to consolidated income before taxes
Share-based compensation	35,516	13,286
Intangible amortization	6,961	6,286
Other non-segment related expenses	1,432	1,204
Amortization of fair value adjustments related to acquired property, plant and equipment	0	190
Interest expense, net	2,190	2,046
Non-operating expense, net	(190)	632
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	40,812	39,222
Semiconductor Products Group [Member]
Segment Reporting Information [Line Items]
Operating income	$ 40,812	$ 39,222

XML

Segment Information - Revenue by Product Line (Details) - USD ($)	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Revenue from External Customer [Line Items]
Net sales	$ 130,429,000	$ 143,802,000
Signal Integrity [Member]
Revenue from External Customer [Line Items]
Net sales	65,599,000	68,058,000
Protection [Member]
Revenue from External Customer [Line Items]
Net sales	40,792,000	42,249,000
Wireless and Sensing [Member]
Revenue from External Customer [Line Items]
Net sales	45,539,000	38,775,000
Other: Warrant Shares
Revenue from External Customer [Line Items]
Net sales offset	$ (21,501,000)	$ (5,280,000)
Net sales [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%
Net sales [Member] | Signal Integrity [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	50.00%	49.00%
Net sales [Member] | Protection [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	31.00%	29.00%
Net sales [Member] | Wireless and Sensing [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	35.00%	26.00%
Net sales [Member] | Other: Warrant Shares
Revenue from External Customer [Line Items]
Concentration risk, percentage	(16.00%)	(4.00%)

XML

Segment Information - Revenue by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 130,429	$ 143,802
Sales Channel, Through Intermediary
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	111,340	100,542
Sales Channel, Directly to Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	40,590	48,540
Other: Warrant Shares
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue offset	$ (21,501)	$ (5,280)

XML

Segment Information - Net Sales Activity by Geographic Region (Details) - Net sales [Member]	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	68.00%	75.00%
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	27.00%	22.00%
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	9.00%	7.00%
Other: Warrant Shares
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	(4.00%)	(4.00%)

XML

Segment Information - Summary of Sales Activity to Countries that Represented Greater than 10% of Total Net Sales (Details) - Net sales [Member]	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%
Geographic Concentration Risk [Member] | China Including Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	50.00%	52.00%
Geographic Concentration Risk [Member] | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	14.00%	9.00%

XML

Stock Repurchase Program - Narrative (Details) - USD ($)	May 24, 2018	Apr. 29, 2018
Equity, Class of Treasury Stock [Line Items]
Remaining authorization under stock repurchase program		$ 21,700,000
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Stock purchase authorized amount,Increase during the period	$ 250,000,000.0
Stock purchase authorized amount	$ 271,700,000.0

XML

Stock Repurchase Program - Summary of Stock Repurchases (Details) - USD ($) $ in Thousands	3 Months Ended		121 Months Ended
	Apr. 29, 2018	Apr. 30, 2017	Apr. 29, 2018
Equity, Class of Treasury Stock [Line Items]
Shares repurchased under the stock repurchase program, shares	645,114	300,000
Shares repurchased under the stock repurchase program, value	$ 25,325	$ 9,961	$ 176,700
Stock Repurchase Program WIth No Expiration Date [Member]
Equity, Class of Treasury Stock [Line Items]
Shares repurchased under the stock repurchase program, shares	645,114	300,000
Shares repurchased under the stock repurchase program, value	$ 25,325	$ 9,961

XML

Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 29, 2018	Jan. 28, 2018
Restructuring Reserve [Roll Forward]
Balance at January 28, 2018	$ 4,749
Charges	346	$ 6,300
Cash payments	(2,840)
Balance at April 29, 2018	2,255	4,749
One-time employee termination benefits
Restructuring Reserve [Roll Forward]
Balance at January 28, 2018	4,063
Charges	346
Cash payments	(2,691)
Balance at April 29, 2018	1,718	4,063
Contract commitments
Restructuring Reserve [Roll Forward]
Balance at January 28, 2018	686
Charges	0
Cash payments	(149)
Balance at April 29, 2018	$ 537	$ 686

XML

Derivatives and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Objectives for using derivative instruments	The Company is exposed to certain risk arising from both its business operations and economic conditions and principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company, on a routine basis and in the normal course of business, experiences expenses denominated in Swiss Franc ("CHF"), Canadian Dollar ("CAD") and Great British Pound ("GBP"). Such expenses expose the Company to exchange rate fluctuations between these foreign currencies and the U.S. Dollar ("USD"). The Company uses derivative financial instruments in the form of forward contracts to mitigate risk associated with adverse movements in these foreign currency exchange rates on a portion of foreign denominated expenses expected to be realized during the current and following fiscal year.
Amount of losses related to the effective portion of derivative instrument included in AOCI	$ 0.1	$ 0.1
Period over which any gains or losses under foreign exchange contracts are expected to be realized	9 months

XML

Derivatives and Hedging Activities - Summary of Open Foreign Currency Contracts (Details) $ in Thousands, $ in Thousands	Apr. 29, 2018 CAD ($)	Apr. 29, 2018 USD ($)
Derivative [Line Items]
Number of Instruments	9	9
Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Number of Instruments	9	9
Short [Member] | Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Notional Value		$ 12,829
Long [Member] | Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Notional Value	$ 16,500

XML

Derivatives and Hedging Activities - Summary of the Carrying Values of Derivative Instruments (Details) - USD ($)		Apr. 29, 2018	Jan. 28, 2018
Derivatives, Fair Value [Line Items]
Fair Value - Assets	[1],[2]	$ 64,000
Fair Value - (Liabilities)	[1],[2]	0
Derivative Net Carrying Value		64,000
Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Net Carrying Value	[1]	64,000	$ 0
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair Value - Assets	[1],[2]	64,000
Level 2 [Member] | Foreign Exchange Contract [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair Value - (Liabilities)	[1],[2]	$ 0

[1] Assets are included in "Other current assets" and liabilities are included in "Accrued liabilities" within the Balance Sheets.

[2] The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Please refer to Note 6.

XML

Derivatives and Hedging Activities - Summary of Gain (Loss) Recognized From Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 65	$ 199
SG&A
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (gain) loss reclassified from AOCI into income (effective portion)	(1)	(59)
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing)	0	0
Sell USD/Buy CAD Forward Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	65	(35)
Sell USD/Buy CAD Forward Contract [Member] | SG&A
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (gain) loss reclassified from AOCI into income (effective portion)	(1)	0
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing)	0	0
Sell USD/Buy GBP Forward Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	0	234
Sell USD/Buy GBP Forward Contract [Member] | SG&A
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (gain) loss reclassified from AOCI into income (effective portion)	0	(59)
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing)	$ 0	$ 0