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Segment Information (Tables)
 12 Months Ended
Jan. 30, 2022
Segment Reporting [Abstract]  
Net sales by segment
Net sales and gross profit by reportable segment were as follows:
Fiscal Year Ended
(in thousands)January 30, 2022January 31, 2021January 26, 2020
Net sales:
High-Performance Analog Group$537,288 $433,174 $390,300 
System Protection Group203,570 161,943 157,212 
Total net sales$740,858 $595,117 $547,512 
Gross profit:
High-Performance Analog Group$364,594 $283,668 $259,172 
System Protection Group105,605 81,631 78,809 
Unallocated costs, including share-based compensation(4,118)(1,750)(1,297)
Total gross profit$466,081 $363,549 $336,684 
Net sales by product line
The table below provides net sales activity by product line on a comparative basis:
Fiscal Year Ended
(in thousands, except percentages)January 30, 2022January 31, 2021January 26, 2020
Signal Integrity$291,114 40 %$255,640 43 %$222,846 40 %
Wireless and Sensing 246,174 33 %177,534 30 %167,454 31 %
Protection203,570 27 %161,943 27 %157,212 29 %
Total net sales$740,858 100 %$595,117 100 %$547,512 100 %
Schedule Of Revenue From External Customers By Sales Channel
Information by Sales Channel
Fiscal Year Ended
(in thousands)January 30, 2022January 31, 2021January 26, 2020
Distributor$647,012 $490,009 $392,582 
Direct93,846 105,108 154,930 
Total net sales$740,858 $595,117 $547,512 
Net sales by geographic region
Net sales activity by geographic region was as follows:
 Fiscal Year Ended
(in thousands, except percentages)January 30, 2022January 31, 2021January 26, 2020
Asia-Pacific$583,852 79 %$474,040 80 %$421,584 77 %
North America90,796 12 %71,866 12 %76,652 14 %
Europe66,210 9 %49,211 8 %49,276 9 %
Total net sales$740,858 100 %$595,117 100 %$547,512 100 %
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 30, 2022January 31, 2021January 26, 2020
China (including Hong Kong)60 %60 %53 %
United States10 %10 %9 %
Total net sales70 %70 %62 %
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 30, 2022January 31, 2021January 26, 2020
Frontek Technology Corporation (and affiliates)18 %16 %11 %
Trend-tek Technology Ltd. (and affiliates)17 %17 %13 %
CEAC International Ltd. (and affiliates)11 %11 %8 %
Arrow Electronics (and affiliates)10 %9 %9 %
Premier Technical Sales Korea, Inc. (and affiliates) (1)
6 %6 %7 %
Samsung Electronics (and affiliates)2 %2 %4 %
(1) Premier is a distributor with a concentration of sales to Samsung Electronics (and affiliates). The above percentages represent the Company's estimate of the sales activity related to Samsung Electronics (and affiliates) that is passing through this distributor.
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 30, 2022January 31, 2021
Frontek Technology Corporation (and affiliates)17 %10 %
CEAC International Ltd. (and affiliates)10 %14 %
Trend-tek Technology Ltd. (and affiliates)7 %14 %
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 30, 2022January 31, 2021
United States$64,927 $61,502 
Rest of North America37,155 35,216 
Asia and all others18,216 22,877 
Europe14,642 11,339 
Total$134,940 $130,934