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Segment and Geographic Information
 9 Months Ended
Mar. 31, 2025
Segment Reporting [Abstract]  
Segment and Geographic Information Segment and Geographic Information
The Company is organized as, and operates in, one operating segment: the design, development and supply of power semiconductor products for computing, consumer electronics, communication and industrial applications. The chief operating decision-maker is the Chief Executive Officer. The financial information presented to the Company’s Chief Executive Officer is on a consolidated basis, accompanied by information about revenue by customer and geographic region, for purposes of evaluating financial performance and allocating resources. The Company has one business segment, and there are no segment managers who are held accountable for operations, operating results and plans for products or components below the consolidated unit level. Accordingly, the Company reports as a single operating segment.

The Company sells its products primarily to distributors in the Asia Pacific region, who in turn sell these products to end customers. Because the Company’s distributors sell their products to end customers which may have a global presence, revenue by geographical location is not necessarily representative of the geographical distribution of sales to end user markets.

The revenue by geographical location in the following tables is based on the country or region in which the products were shipped to:
Three Months Ended March 31,Nine Months Ended March 31,
 2025202420252024
(in thousands)(in thousands)
Hong Kong$141,316 $123,731 $445,451 $389,018 
China18,701 19,108 55,871 76,270 
South Korea515 326 1,214 9,670 
United States1,167 1,728 2,939 4,128 
Other countries2,936 5,167 14,203 16,892 
 $164,635 $150,060 $519,678 $495,978 

The following is a summary of revenue by product type:
Three Months Ended March 31,Nine Months Ended March 31,
 2025202420252024
 (in thousands)(in thousands)
Power discrete$106,822 $93,815 $342,232 $324,093 
Power IC54,576 49,990 161,251 153,032 
Packaging and testing services and other438 1,204 2,354 2,694 
License and development services2,799 5,051 13,841 16,159 
 $164,635 $150,060 $519,678 $495,978 

Long-lived assets, net consisting of property, plant and equipment and operating lease right-of-use assets, net by geographical area are as follows:
 March 31,
2025		June 30,
2024
(in thousands)
China$99,300 $106,666 
United States234,041 249,791 
Other countries4,952 5,212 
 $338,293 $361,669