Silicon Transistor C
21 Katrina Road, Chelmsford, MA 01824
UNVERIFIEDLAST SEEN IN FEDERAL DATA NOV 1999 · 2 SOURCES
Present in a source dataset, with no recent operating signal.
What they make
Semiconductor and Related Device Manufacturing334413Where it is
42.60974, -71.33159 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Pro Av Systems, INC. | Chelmsford | Audio and Video Equipment Manufacturing 334310 | ACTIVE | 0.8 KM |
| Qorvo - Chelmsford, MA | Chelmsford | Semiconductor and Related Device Manufacturing 334413 | LIKELY ACTIVE | 1.1 KM |
| Foresight Imaging LLC | Chelmsford | Surgical and Medical Instrument Manufacturing 339112 | ACTIVE | 1.1 KM |
| Qorvo INC | Chelmsford | Semiconductor and Related Device Manufacturing 334413 | UNVERIFIED | 1.3 KM |
| Microsense, LLC | Lowell | Semiconductor and Related Device Manufacturing 334413 | ACTIVE | 1.6 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 6 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 AIR, AIRS/AFS, MA-EPICS, RCRAINFO, TRIS · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA FRS | EXISTENCE | OCT 2016 | OCT 2016 |
| EPA ECHO | OPERATING | NOV 1999 | NOV 1999 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| RCRA GENERATOR STATUS | EPA ECHO | AUG 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.