Who makes semiconductor test & burn-in for AI data centers
The automated test equipment, probe cards, sockets, and burn-in systems used to verify a chip works before and after it's packaged.
Test and burn-in happens at multiple points in the chain — wafer-level probing before a die leaves the foundry, and package-level test and burn-in after advanced packaging is complete — using testers, probe cards, sockets, and dedicated burn-in systems from a distinct set of suppliers from the packaging and equipment side (Packaging & bonding equipment). It's the quality gate between every other step in this layer and a shippable, working accelerator, and some OSATs handling overflow packaging work (see the OSAT child part under advanced packaging) also provide test services directly. Investor interest in this sub-layer tends to track how much more test time and how many more test insertions a given AI die needs relative to a conventional logic chip — larger, more complex, higher-value dies raise the cost of letting a defective unit through, which pushes toward more thorough (and more expensive) test and burn-in per unit rather than toward higher unit test cost. Supplier concentration is meaningful in testers specifically, with a more fragmented set of vendors for probe cards, sockets, and handlers.
AI delta: Larger, more complex, and higher-value AI dies raise the cost of letting a defective unit through, pushing more test time and more test insertions onto each unit shipped.
Companies on this part (9)
| Company | Role | Ownership | Ticker | Price | 1d | Confidence | Note |
|---|---|---|---|---|---|---|---|
| Advantest | manufacturer | public | 6857.T | 32340 JPY | -0.9% | disclosed | and Teradyne (TER) testers · source |
| Aehr | manufacturer | public | AEHR | 55.31 USD | +1.5% | disclosed | burn-in · source |
| Cohu | manufacturer | public | COHU | 47.96 USD | +3.1% | disclosed | handlers · source |
| FormFactor | manufacturer | public | FORM | 98.51 USD | +6.3% | disclosed | · source |
| ISC | manufacturer | public | 095340.KQ | 148300 KRW | -4.5% | inferred | |
| KYEC | manufacturer | public | 2449.TW | 263 TWD | -5.6% | inferred | test services |
| Leeno | manufacturer | public | 058470.KQ | 61600 KRW | -4.8% | inferred | test sockets |
| MPI | manufacturer | public | 6223.TWO | 4890 TWD | -2.6% | inferred | probe cards |
| Technoprobe | manufacturer | public | TPRO.MI | 23.68 EUR | -4.1% | disclosed | · source |
Who competes here
The same table read the other way: every company above competes for semiconductor test & burn-in sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.
Seen in real machines
semiconductor test & burn-in is named in 1 of the rack teardowns and supercomputer breakdowns on this site. Each line below is a piece of that machine. The companies shown are the ones named on that line, not necessarily the maker of this part.
Nearby parts
- Previous in layer: Chip-level thermal: lids, heat spreaders, TIMs
- Next in layer: Fab equipment
- Layer: Layer 1 — Compute silicon & packaging
Latest feed
- Texas Instruments posts rising Q3 sales across data centers, cars, industry — DigiTimes, 2026-10-22Texas Instruments reported strong third-quarter sales driven by demand in industrial, automotive, and data center sectors, despite facing tight chip supply while ramping up production capacity.
- Nvidia lines up six suppliers to expand substrate, packaging, and testing capacity — DigiTimes, 2026-10-22Nvidia is collaborating with six suppliers to increase the manufacturing capacity for substrates, advanced packaging, testing, and optical engines to satisfy demand for its AI platforms.
- Elon Musk expands South Korean supplier network for Terafab — DigiTimes, 2026-10-22Elon Musk's Terafab semiconductor production initiative is expanding its supplier outreach in South Korea across various components and process materials for the entire supply chain.
- India’s OSAT Buildout Puts Semiconductor Testing in Focus — EE Times, 2026-10-21Semiconductor testing infrastructure in India is seeing activity, with one OSAT selecting test systems while others continue evaluating equipment for upcoming production.
- SK Hynix advances chip inspection technology as 3D memory pushes conventional metrology to its limits — DigiTimes, 2026-10-19SK Hynix is advancing chip inspection technology to handle the challenges presented by 3D memory stacking.
- SEMICON West 2026 Displays AI-Era Chipmaking, Workforce Development — EE Times, 2026-10-16The semiconductor industry is preparing its fabrication facilities and workforce to meet the demands of the AI era.
- AI server tracker: semiconductor testing and design services rally on compute demand — DigiTimes, 2026-10-16The article discusses the rising demand for semiconductor testing and design services, driven by ongoing compute requirements in AI.
- HTSI September revenue surges 150% as AI chip testing demand accelerates — DigiTimes, 2026-10-12HTSI reported a 150% revenue increase in September driven by heightened demand for AI chip testing.
- Rohm Semiconductor Expands Back-End Chip Manufacturing Outsourcing — EE Times, 2026-10-08Rohm Semiconductor is expanding its back-end manufacturing capabilities to include more outsourced chip packaging and testing services.
- CHPT posts record quarterly revenue as chip test demand rises — DigiTimes, 2026-10-05CHPT reported record quarterly revenue driven by increasing demand for semiconductor chip testing.
Questions about semiconductor test & burn-in
- What is semiconductor test & burn-in?
- The automated test equipment, probe cards, sockets, and burn-in systems used to verify a chip works before and after it's packaged.
- Which companies make semiconductor test & burn-in for AI data centers?
- This catalog lists 9 companies on Semiconductor test & burn-in, 9 of them with listed equity: Advantest, Aehr, Cohu, FormFactor, ISC, KYEC, Leeno, MPI, Technoprobe.
- How does AI change demand for semiconductor test & burn-in?
- Larger, more complex, and higher-value AI dies raise the cost of letting a defective unit through, pushing more test time and more test insertions onto each unit shipped.
- How reliable are these semiconductor test & burn-in supplier placements?
- The 9 placements on this part break down as 5 disclosed, 4 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.
Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON