What's the difference between Diodes Incorporated and ROHM?

Diodes Incorporated is a major in Power Semiconductors (incl. SiC, GaN) based in United States; ROHM is a major in Integrated Device Manufacturer based in Japan. Both operate in the Analog, Power, RF segment.

Who are Diodes Incorporated's and ROHM's suppliers?

wafergraph tracks 1 suppliers for Diodes Incorporated and 0 for ROHM — Diodes Incorporated's include Nuvoton Technology.

Diodes Incorporated vs ROHM

Diodes Incorporated's primary segment is Power Semiconductors (incl. SiC, GaN); ROHM's is Integrated Device Manufacturer. ROHM is larger by market cap ($12.0B vs $4.4B). ROHM reports higher tracked revenue ($2.4B vs $1.5B).

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Side-by-side

	Diodes Incorporated	ROHM
Market cap	$4.4B	$12.0B
Revenue	$1.5B (FY2025)	$2.4B (FY2025)
Primary segment	Power Semiconductors (incl. SiC, GaN)	Integrated Device Manufacturer
Market position	major	major
Country	United States	Japan
Tracked suppliers	1	0
Tracked customers	1	3
Chokepoint / criticality	68/100	68/100

Market caps/revenue from the wafergraph dataset · data as of 2026-10-09. Criticality is a graph-derived chokepoint score (0–100). Coverage is partial; "Unpriced" means no reliable market cap.

How Diodes Incorporated and ROHM compare

Size: ROHM is the larger company by market cap.
Revenue: ROHM reports higher tracked revenue.
Supply-chain criticality: Both companies have the same chokepoint score (68/100).
Footprint: Diodes Incorporated (United States) vs ROHM (Japan).

Company hubs

Diodes Incorporated · ROHM · Analog, Power, RF segment

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Cite as: wafergraph, “Diodes Incorporated vs ROHM”, https://wafergraph.com/compare/diodes_inc-vs-rohm (data as of 2026-10-09).

Frequently asked questions3

Is Diodes Incorporated bigger than ROHM?: ROHM is larger by market cap ($12.0B vs $4.4B).
What's the difference between Diodes Incorporated and ROHM?: Diodes Incorporated is a major in Power Semiconductors (incl. SiC, GaN) based in United States; ROHM is a major in Integrated Device Manufacturer based in Japan. Both operate in the Analog, Power, RF segment.
Who are Diodes Incorporated's and ROHM's suppliers?: wafergraph tracks 1 suppliers for Diodes Incorporated and 0 for ROHM — Diodes Incorporated's include Nuvoton Technology.