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Segment and Geographic Information (Tables)

3 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Disaggregation of Revenue

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 September 30,
			2025						2024
			(in thousands)
Hong Kong			$	178,411					$	153,495
China			2,357						21,255
South Korea			479						290
United States			1,125						1,073
Other countries			129						5,774
			$	182,501					$	181,887

The following is a summary of revenue by product type:

			Three Months Ended September 30,
			2025						2024
			(in thousands)
Power discrete			$	108,506					$	122,454
Power IC			72,708						52,940
Packaging and testing services and other			1,287						852
License and development services			—						5,641
			$	182,501					$	181,887

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Long-lived assets, net consisting of property, plant and equipment and operating lease right-of-use assets, net by geographical area are as follows:

			September 30, 2025						June 30, 2025
			(in thousands)
China			$	100,334					$	99,389
United States			227,245						230,518
Other countries			5,426						5,478
			$	333,005					$	335,385

X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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- Definition

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

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