Aehr Test Systems
400 Kato Ter, Fremont, CA 94539
Operating signal within 12 months from two or more independent sources.
What they make
Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals334515Aehr Test Systems manufactures equipment for semiconductor test and burn-in at the wafer, die, packaged parts, and system levels. The company’s products include FOX-CP, FOX-XP, FOX-NP, WaferPak contactors, Die company claims-volt.Aircraft also makes Sonoma and Tahoe systems with associated loaders and modules. It serves the artificial intelligence, automotive, mobile, silicon photonics, memory & logic, and silicon carbide
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
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|---|---|---|---|---|
| Celltrio INC | Fremont | Analytical Laboratory Instrument Manufacturing 334516 | ACTIVE | 0.2 KM |
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Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 4 FEDERAL SOURCES, 9 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in CA-CERS, CA-ENVIROVIEW, RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| SAM GOV | OPERATING | NOV 2025 | NOV 2025 |
| EPA FRS | EXISTENCE | OCT 2015 | OCT 2015 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | NOV 2025 |
| CAGE CODE | SAM GOV | NOV 2025 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | NOV 2025 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | NOV 2025 |
| REGISTRATION EXPIRATION | SAM GOV | NOV 2025 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | NOV 2025 |
| WEBSITE | SAM GOV | NOV 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.