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Segment Information (Tables)
 12 Months Ended
Jan. 29, 2023
Segment Reporting [Abstract]  
Net sales by segment
Net sales and gross profit by reportable segment were as follows:
Fiscal Year Ended
(in thousands)January 29, 2023January 30, 2022January 31, 2021
Net sales:
Signal Integrity Products Group$304,124 40 %$291,114 40 %$255,640 43 %
Advanced Protection and Sensing Products Group236,890 31 %306,932 41 %243,085 41 %
IoT System Products Group210,326 28 %142,812 19 %96,392 16 %
IoT Connected Services Group5,193 1 %— — %— — %
Total net sales$756,533 100 %$740,858 100 %$595,117 100 %
Gross profit:
Signal Integrity Products Group$211,791 $200,251 $172,069 
Advanced Protection and Sensing Products Group125,584 163,474 127,468 
IoT System Products Group148,895 106,474 65,762 
IoT Connected Services Group2,489 — — 
Unallocated costs, including share-based compensation and amortization of acquired technology(10,201)(9,060)(9,426)
Total gross profit$478,558 $461,139 $355,873 
Schedule Of Revenue From External Customers By Sales Channel
Information by Sales Channel
Fiscal Year Ended
(in thousands)January 29, 2023January 30, 2022January 31, 2021
Distributor$640,713 $647,012 $490,009 
Direct115,820 93,846 105,108 
Total net sales$756,533 $740,858 $595,117 
Net sales by geographic region
Net sales activity by geographic region was as follows:
 Fiscal Year Ended
(in thousands, except percentages)January 29, 2023January 30, 2022January 31, 2021
Asia-Pacific$543,795 72 %$583,852 79 %$474,040 80 %
North America109,444 14 %90,796 12 %71,866 12 %
Europe103,294 14 %66,210 9 %49,211 8 %
Total net sales$756,533 100 %$740,858 100 %$595,117 100 %
Sales activity to countries representing greater than 10% of total sales The table below summarizes sales activity to countries that represented greater than 10% of total sales for at least one of the periods presented:
 Fiscal Year Ended
(percentage of total net sales)January 29, 2023January 30, 2022January 31, 2021
China (including Hong Kong)53 %60 %60 %
United States13 %10 %10 %
Total net sales66 %70 %70 %
Significant Customers
The following significant customers accounted for at least 10% of the Company's net sales in one or more of the periods indicated:
Fiscal Year Ended
(percentage of net sales)January 29, 2023January 30, 2022January 31, 2021
Trend-tek Technology Ltd. (and affiliates)16 %17 %17 %
Frontek Technology Corporation (and affiliates)13 %18 %16 %
CEAC International Ltd. (and affiliates)11 %11 %11 %
Arrow Electronics (and affiliates)8 %10 %9 %
The following table shows the customers that have an outstanding receivable balance that represents at least 10% of the Company's total net receivables as of one or more of the dates indicated:
(percentage of net receivables)January 29, 2023January 30, 2022
Frontek Technology Corporation (and affiliates)8 %17 %
CEAC International Ltd. (and affiliates)2 %10 %
Long-lived assets by location
The following table summarizes the Company's long-lived assets, which consist of property, plant and equipment, net of accumulated depreciation, classified by location:
Balance as of
(in thousands)January 29, 2023January 30, 2022
United States$73,695 $64,927 
Rest of North America58,307 37,155 
Asia and all others18,359 18,216 
Europe18,932 14,642 
Total$169,293 $134,940