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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
%