Microsemi Frequency and Time CORP

4775 Walnut St Ste B, Ste 1b, Boulder, CO 80301

LIKELY ACTIVELAST SEEN IN FEDERAL DATA MAY 2026 · 2 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing334220

Products

Sold by MICROSEMI FREQUENCY AND TIME CORP · 12

Batteries, Rechargeable · Electrical And Electronic Assemblies, Boards, Cards, And Associated Hardware · Electrical And Electronic Properties Measuring And Testing Instruments · Electronic Modules · Electron Tubes And Associated Hardware · Hazard-Detecting Instruments And Apparatus · Laboratory Equipment And Supplies · Miscellaneous Electrical And Electronic Components · Navigational Instruments · Office Devices And Accessories · Radio And Television Communication Equipment, Except Airborne · Radio Navigation Equipment, Except Airborne

Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.

Where these came from

12 from usaspending_psc · Federal registry

Supplied under federal award N0016422PJ048 (2022-04-05), PSC . An award shows what the government bought from this company; it does not establish which of its sites made it.

Where it is

40.01915, -105.24048 · CENSUS TIGER

COUNTY

Boulder County

METRO AREA

Boulder, CO

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STREET VIEW

Open street-level view — APR 2023

Other plants nearby

Facility	City	Industry	Status	Distance
D-orbit Space, INC.	Boulder	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334220	ACTIVE	0.1 KM
Freewave Technologies INC	Boulder	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334220	ACTIVE	1.3 KM
Environmental Acoustical Research INC	Boulder	Surgical Appliance and Supplies Manufacturing 339113	ACTIVE	1.9 KM
Saetta Labs LLC	Boulder	Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334515	LIKELY ACTIVE	3.1 KM
Teraquant Corporation	Boulder	Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334515	ACTIVE	3.4 KM

Every listed plant in Boulder County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 9 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in RCRAINFO · EPA site type STATIONARY.

SAM.gov entity registrationOPERATING
Record C5K1PGM1T8M7 · first seen MAY 2026 · last seen MAY 2026
EPA Facility Registry ServiceEXISTENCE
Record 110037382141 · first seen DEC 2014 · last seen DEC 2014

IN BOULDER COUNTY12 other plants share this one’s industry (Communications Equipment Manufacturing, NAICS 3342); 6 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: MICROSEMI FREQUENCY AND TIME CORP · JUL 2026 · ON THIS PAGE; SAM.gov: MICROSEMI FREQUENCY AND TIME CORP · MAY 2026 · ON THIS PAGE
Street addressSOURCES DISAGREE: EPA: 4775 WALNUT ST STE 1B · JUL 2026; SAM.gov: 4775 WALNUT ST STE B · MAY 2026 · ON THIS PAGE
City: EPA: BOULDER · JUL 2026 · ON THIS PAGE; SAM.gov: BOULDER · MAY 2026 · ON THIS PAGE
State: EPA: CO · JUL 2026 · ON THIS PAGE; SAM.gov: CO · MAY 2026 · ON THIS PAGE
County (FIPS code): EPA: 08013 · SEP 2026
CoordinatesSOURCES DISAGREE: Census geocoder: 40.019152494562,-105.240484204206 · JUL 2026 · ON THIS PAGE; EPA: 40.01896,-105.23933 · JUL 2026
Website: SAM.gov: https://www.microchip.com/en-us/products/clock-and-timing · MAY 2026
CAGE code: SAM.gov: 0PZY8 · MAY 2026
SAM registration expires: SAM.gov: 2027-05-06 · MAY 2026

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