What Powertech makes for data centers
public · HQ Taiwan
Powertech is a publicly listed company and based in Taiwan. It appears on 1 part of the AI data center — OSATs taking CoWoS back-end and overflow — in the role of manufacturer. That part sits in Layer 1 — Compute silicon & packaging. Its shares trade on Taiwan Stock Exchange as 6239.TW.
Listing
Taiwan Stock Exchange: 6239.TW· 248 TWD -6.94% · mkt cap 180.7B TWD
Snapshot 2026-10-25T10:41:17Z — nightly, not real-time.· Chart on TradingView ↗
Exposure
1 part across 1 layer
No disclosed data-center revenue share on file.
Parts, by layer
Layer 1 — Compute silicon & packaging
| Part | Role | Confidence | Competitors | Note |
|---|---|---|---|---|
| OSATs taking CoWoS back-end and overflow | manufacturer | inferred | ASE Technology (ASE/SPIL), Amkor, KYEC |
Where Powertech sits in the stack
Powertech's placements in this catalog cover 1 part, all in layer 1, compute silicon & packaging. None of them currently carries a sourced supply constraint tag. Across these parts it overlaps with other companies most often on the lines below.
What these parts are
- OSATs taking CoWoS back-end and overflow — Outsourced assembly and test (OSAT) providers that take on back-end assembly and overflow packaging work when primary CoWoS capacity is full.
Closest peers in this catalog
Monthly revenue (TWSE/TPEx filing)
| Month | Revenue (TWD m) | MoM | YoY |
|---|---|---|---|
| 2026-09 | 8,507 | -0.6% | 27.0% |
| 2026-08 | 8,558 | 3.5% | 24.5% |
| 2026-07 | 8,270 | 8.5% | 29.4% |
| 2026-06 | 7,623 | -3.7% | 21.7% |
| 2026-05 | 7,918 | 4.5% | 30.2% |
| 2026-04 | 7,575 | 2.8% | 32.5% |
| 2026-03 | 7,372 | 10.0% | 35.1% |
| 2026-02 | 6,700 | -7.5% | 34.6% |
| 2026-01 | 7,243 | -0.7% | 43.0% |
| 2025-12 | 7,297 | 2.2% | 30.5% |
| 2025-11 | 7,140 | 2.4% | 25.1% |
| 2025-10 | 6,970 | 4.0% | 20.2% |
Questions about Powertech
- What does Powertech make for AI data centers?
- This catalog places Powertech on 1 part: OSATs taking CoWoS back-end and overflow (manufacturer).
- Is Powertech publicly traded?
- Yes — Powertech is listed on Taiwan Stock Exchange under 6239.TW. Prices shown on this page are a nightly snapshot, not real-time, and nothing here is investment advice.
- Where is Powertech based?
- Taiwan, per the company record in this catalog.
- Who else makes OSATs taking CoWoS back-end and overflow for AI data centers?
- ASE Technology (ASE/SPIL), Amkor and KYEC are also placed on OSATs taking CoWoS back-end and overflow in this catalog.
- How well sourced are these placements?
- Every part→company placement carries a confidence tag. For Powertech the mix is 1 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a lead from the taxonomy with no citation yet. Treat reported and inferred as leads, not facts.
Answers are generated from this catalog's own rows — see sources & method.