# Who are United Microelectronics (UMC)'s customers? Who does United Microelectronics (UMC) earn revenue from?
Canonical: https://valuechain.wiki/umc · Facet: customers · Updated: 2026-07-12T08:20:16.520645+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: United Microelectronics (UMC)'s confirmed revenue counterparties include other fabless (Realtek · Novatek et al.), 미디어텍, Qualcomm plus 2 undisclosed/aggregate relationships. Per the valuechain.wiki graph: 5 revenue edges, backed by 7 dated sources, 1 of them primary filings (as of 2026-07-12).

### 기타 팹리스 (Realtek·Novatek 등) (high)  → /realtek.md
- metric: Revenue ~$7.6B · FY2025 · annual total revenue (approx)
- note: A flagship customer group for mature-node-focused UMC (28/40/65nm) — Taiwan fabless firms like Realtek and Novatek outsource high-volume Ethernet/audio/display-driver chips. UMC's decision to avoid the leading-edge race makes it a stable supply source for these commodity chips.
- [confirms] SEC EDGAR (EN, filing, published 2026-01-28) https://www.sec.gov/Archives/edgar/data/0001033767/000119312526025557/umc-ex99_1.htm: "FY2025 revenue about $7.6B, shipments +12%."
- [mentions] Insightology Research (EN, research, published 2025-12-11) https://www.insightologyresearch.com/p/umc-a-value-turnaround-play: "Names Realtek among UMC's fabless clients."
- [confirms] CT Semiconductor (EN, analysis, published 2025-09-01) https://ctsemiconductor.com/umc-the-second-leading-semiconductor-giant-in-taiwan-after-tsmc/: "Realtek is named among UMC's mature-node customers."
- [confirms] ZDNet Korea (KO, news, published 2024-01-30) https://zdnet.co.kr/view/?no=20240130165149: "UMC focuses on 22/28nm mature nodes and gains FinFET via its 12nm collaboration with Intel."
- [confirms] SMBOM (EN, news, accessed 2026-06-20) https://www.smbom.com/news/40403: "UMC wins a Qualcomm packaging deal."

### 미디어텍 (high)  → /mediatek.md
- note: Mature-node (22/28nm) foundry for mediatek.
- [confirms] Insightology Research (EN, research, published 2025-12-11) https://www.insightologyresearch.com/p/umc-a-value-turnaround-play: "Major customers include MediaTek, Qualcomm, Samsung, NXP, and Texas Instruments."
- [confirms] Tom's Hardware (EN, news, published 2025-06-15) https://www.tomshardware.com/tech-industry/semiconductors/the-trailing-edge-foundry-roadmap-examined: "UMC's major customers include TI, MediaTek, Qualcomm and Broadcom; its 22/28nm mature/specialty nodes are ~40% of sales (display drivers, networking) as fabless/IDMs outsource mature-node volume to UMC."

### Qualcomm (mid)  → /qualcomm.md
- note: Mature-node (22/28nm) foundry for qualcomm.
- [confirms] Insightology Research (EN, research, published 2025-12-11) https://www.insightologyresearch.com/p/umc-a-value-turnaround-play: "Names Qualcomm among UMC's major customers."
- [confirms] Tom's Hardware (EN, news, published 2025-06-15) https://www.tomshardware.com/tech-industry/semiconductors/the-trailing-edge-foundry-roadmap-examined: "UMC's major customers include TI, MediaTek, Qualcomm and Broadcom; its 22/28nm mature/specialty nodes are ~40% of sales (display drivers, networking) as fabless/IDMs outsource mature-node volume to UMC."

### 텍사스인스트루먼트 (mid)  → /texas-instruments.md
- note: Mature-node (22/28nm) foundry for texas-instruments.
- [confirms] Insightology Research (EN, research, published 2025-12-11) https://www.insightologyresearch.com/p/umc-a-value-turnaround-play: "Names Texas Instruments among UMC's major customers."
- [confirms] Tom's Hardware (EN, news, published 2025-06-15) https://www.tomshardware.com/tech-industry/semiconductors/the-trailing-edge-foundry-roadmap-examined: "UMC's major customers include TI, MediaTek, Qualcomm and Broadcom; its 22/28nm mature/specialty nodes are ~40% of sales (display drivers, networking) as fabless/IDMs outsource mature-node volume to UMC."

### Broadcom (mid)  → /broadcom.md
- note: Fabricates some of Broadcom’s communications/specialty chips on mature nodes.
- [mentions] Insightology Research (EN, research, published 2025-12-11) https://www.insightologyresearch.com/p/umc-a-value-turnaround-play: "UMC brings clients (Realtek, MediaTek, Broadcom) to Intel's facilities via the partnership."
- [confirms] Tom's Hardware (EN, news, published 2025-06-15) https://www.tomshardware.com/tech-industry/semiconductors/the-trailing-edge-foundry-roadmap-examined: "UMC FY2025 revenue ~$7.6B (+5%); 22/28nm mature/specialty is ~40% of sales (display drivers, networking)."
- [confirms] SMBOM (EN, news, accessed 2026-06-20) https://www.smbom.com/news/40403: "UMC’s key customers include Broadcom."
- [mentions] AIChipLink (EN, analysis, accessed 2026-06-20) https://aichiplink.com/blog/2025-Top-10-Semiconductor-Foundries-in-the-World_211: "UMC provides mature-node foundry to fabless and IDMs."

Reverse side: https://valuechain.wiki/umc/suppliers.md · Ripple: https://valuechain.wiki/umc/ripple.md

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