Concentration of Risk

3 Months Ended

Apr. 26, 2020

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 26, 2020		April 28, 2019
Trend-tek Technology Ltd. (and affiliates)	15	%	12	%
Frontek Technology Corporation (and affiliates)	12	%	10	%
CEAC International Limited	12	%	4	%
Premier Technical Sales Korea, Inc. (and affiliates) ⁽¹⁾	9	%	5	%
Samsung Electronics (and affiliates) ⁽¹⁾	2	%	8	%
Huawei Technologies Co. Ltd. (and affiliates)	7	%	16	%

⁽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 had an outstanding receivable balance that represented at least 10% of total net receivables as of one or more of the dates indicated:



	Balance as of
(percentage of net receivables)	April 26, 2020		January 26, 2020
CEAC International Limited	15	%	11	%
Trend-tek Technology Ltd. (and affiliates)	12	%	13	%
Frontek Technology Corporation (and affiliates)	8	%	11	%

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 the COVID-19 pandemic or 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 South Korea. 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. During the three months ended April 26, 2020 and April 28, 2019, approximately 21% and 15%, respectively, of the Company’s silicon in terms of cost of wafers was supplied by a third-party foundry in China, and approximately 8% and 12%, respectively, of the Company’s silicon in terms of cost of wafers was supplied by a third-party foundry in Israel. These percentages could be higher in future periods.

For the three months ended April 26, 2020, authorized distributors accounted for approximately 78% of the Company’s net sales, compared to approximately 62% for the three months ended April 28, 2019. 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 2021, the Company's largest distributors were based in Asia