# Who does Realtek pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/realtek · Facet: suppliers · Updated: 2026-07-12T08:25:18.67+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Realtek's confirmed suppliers/cost counterparties include UMC (foundry outsourcing, mature nodes), TSMC (foundry outsourcing). Per the valuechain.wiki graph: 2 cost edges, backed by 2 dated sources, 1 of them primary filings (as of 2026-07-12).

### UMC (파운드리 위탁, 성숙노드) (mid)  → /umc.md
- note: The mature-node workhorse partner — Realtek's high-volume Ethernet/audio/USB chips fit UMC's 28/40/65nm specialty processes, and Realtek is named on UMC's customer roster. The cost base of the commodity franchise, and because these are mature (not leading-edge) nodes, a relatively more favorable pricing axis.
- [confirms] CT Semiconductor (EN, analysis, published 2025-09-01) https://ctsemiconductor.com/umc-the-second-leading-semiconductor-giant-in-taiwan-after-tsmc/: "UMC's mature-node (28/40/65nm) customers listed as Qualcomm, Broadcom, MediaTek, Realtek, TI; Realtek's key foundry partners are TSMC and UMC."
- [mentions] Realtek Semiconductor (EN, filing, published 2025-05-31) https://www.realtek.com/images/ar/2024_Annual_Report_.pdf: "Fabless Realtek outsources wafers — the cost of its high-volume commodity lines is driven by foundry wafers."

### TSMC (파운드리 위탁) (mid)  → /tsmc.md
- note: As a fabless firm, Realtek's chips are foundry silicon — it outsources its higher-integration and newer parts to TSMC under long-term supply agreements. By not manufacturing, its cost base and supply security hinge on TSMC pricing/capacity and Taiwan concentration.
- [confirms] CT Semiconductor (EN, analysis, published 2025-09-01) https://ctsemiconductor.com/umc-the-second-leading-semiconductor-giant-in-taiwan-after-tsmc/: "Realtek's primary manufacturing partners are TSMC and UMC, with long-term supply agreements to fabricate its audio, network and multimedia chips."
- [mentions] Realtek Semiconductor (EN, filing, published 2025-05-31) https://www.realtek.com/images/ar/2024_Annual_Report_.pdf: "Realtek is fabless, outsourcing all wafer fabrication; Taiwan foundry concentration is a stated risk."

### R&D·차세대 IP 재투자 (AI 가속기·Wi-Fi 7·차량 이더넷·USB4) (mid)
- note: For a fabless company, R&D is the factory — Realtek's #7-fabless standing is sustained by reinvesting a large share of revenue into embedded AI accelerators, Wi-Fi 7/next-gen, automotive Ethernet and USB4 IP. This allocation is the decisive call on whether it stays in commodity codecs or climbs to high-ASP networking. (Not external M&A — internal R&D reinvestment.)
- [confirms] Realtek Semiconductor (EN, filing, published 2025-05-31) https://www.realtek.com/images/ar/2024_Annual_Report_.pdf: "Realtek spends a substantial share of revenue on R&D; continues developing next-gen IP including embedded AI accelerators."

Reverse side: https://valuechain.wiki/realtek/customers.md · Ripple: https://valuechain.wiki/realtek/ripple.md

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Full node: https://valuechain.wiki/realtek.md · JSON: https://valuechain.wiki/realtek.json