Verified Nov 2026
Electronics & Software
·
Sunnyvale, California
·
Since 1986
Sierra Circuits is a printed circuit board (PCB) manufacturer and assembly provider headquartered in Sunnyvale, California, founded in 1986. It is a family-run company with an estimated 500 to 1,000 employees and estimated annual revenue of $100 to $250 million. The company makes multi-layer, flex, rigid-flex, and high-density interconnect boards, serving the automotive, electric-vehicle, electronics, medical, and military-defense industries. In December 2025 it received a STAR Award from JPL AIRSAR-NG.
Sierra Circuits at a glance
Revenue
$100-250M
Est. band
Employees
500-1,000
Founded
1986
Headquarters
Sunnyvale, California
Certifications
AS9100 · ISO 13485 · ISO 9001 · ITAR registered
Import activity
9
Industries
Automotive
Electric Vehicles
Electronics
Medical
Military & Defense
Plumbing & Hardware
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
9
Named foreign suppliers
9
Top origins
United Kingdom · Italy · Portugal · China
Shared foreign counterparties do not establish that these companies buy from Sierra Circuits.
What this tells a buyer
Recent public reporting includes a $3.4 million expansion into new space in Sunnyvale, California, announced in December 2024.
The company holds AS9100, ISO 13485, ISO 9001, and ITAR registrations and offers PCB layout, manufacturing, assembly, and component sourcing.
Sierra Circuits is privately held, and its revenue band is an estimate rather than a reported figure.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
40 years in operation (founded 1986).
Holds AS9100, ISO 13485, ISO 9001, ITAR registered certification(s) per public sources.
Overview
Sierra Circuits is a printed circuit board (PCB) manufacturer and assembly provider headquartered in Sunnyvale, California, founded in 1986. It is a family-run company with an estimated 500 to 1,000 employees and estimated annual revenue of $100 to $250 million. The company makes multi-layer, flex, rigid-flex, and high-density interconnect boards, serving the automotive, electric-vehicle, electronics, medical, and military-defense industries. In December 2025 it received a STAR Award from JPL AIRSAR-NG.
At a glance
Attribute | Detail |
|---|---|
Founded | 1986 |
Headquarters | Sunnyvale, California |
Employees | 500-1,000 |
Revenue | $100-250M (estimated) |
Primary capability | Electronics & Software |
Certifications | AS9100 · ISO 13485 · ISO 9001 · ITAR registered |
What Sierra Circuits makes
The company holds AS9100, ISO 13485, ISO 9001, and ITAR registrations and offers PCB layout, manufacturing, assembly, and component sourcing.
Products and capabilities described on the company's own site include PCB, Assembly, Electronics (source: protoexpress.com).
Certifications
Sierra Circuits is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — protoexpress.com
ISO 13485 — intelligence360.news
ISO 9001 — protoexpress.com
ITAR registered — protoexpress.com
Trade and customs footprint
Recent public reporting includes a $3.4 million expansion into new space in Sunnyvale, California, announced in December 2024. US customs bill-of-lading records list 9 inbound shipments across 9 foreign suppliers, with top origins including United Kingdom · Italy · Portugal · China.
Latest developments
2026-08-05 — Sole Source to Sierra Circuits, Inc. for Printed… | CLEATUS (cleat.ai)
2025-12-11 — Sierra Circuits Receives STAR Award from JPL AIRSAR-NG | Sierra Circuits (protoexpress.com)
2025-06-16 — Sierra Circuits Boosts High Precision PCB Manufacturing with Schmoll Technology :: I-Connect007 (iconnect007.com)
2024-12-03 — Sierra Circuits to spend $3,400,000.00 to expand into new space in Sunnyvale California. - intelligence360 (intelligence360.news)
Facilities
Sierra Circuits is headquartered in Sunnyvale, California. Public sources also reference these locations:
Sunnyvale, CA — protoexpress.com
Sunnyvale, California — protoexpress.com
Company details
Sierra Circuits is privately held, and its revenue band is an estimate rather than a reported figure. Sierra Circuits was founded in 1986, has an estimated 500-1,000 employees, and is headquartered in Sunnyvale, California. On the LightSource stability read it is rated "Established & active": 40 years in operation (founded 1986). Holds AS9100, ISO 13485, ISO 9001, ITAR registered certification(s) per public sources.
Frequently asked questions
What does Sierra Circuits make?
Sierra Circuits is a printed circuit board (PCB) manufacturer and assembly provider headquartered in Sunnyvale, California, founded in 1986. It is a family-run company with an estimated 500 to 1,000 employees and estimated annual revenue of $100 to $250 million. The company makes multi-layer, flex, rigid-flex, and high-density interconnect boards, serving the automotive, electric-vehicle, electronics, medical, and military-defense industries. In December 2025 it received a STAR Award from JPL AIRSAR-NG.
Where is Sierra Circuits headquartered?
Sierra Circuits is headquartered in Sunnyvale, California (1108 West Evelyn Avenue, Sunnyvale, California, 94086).
When was Sierra Circuits founded?
Sierra Circuits was founded in 1986.
How big is Sierra Circuits?
Sierra Circuits has an estimated 500-1,000 employees, with revenue in the $100-250M range (estimated).
What certifications does Sierra Circuits hold?
Sierra Circuits lists AS9100 · ISO 13485 · ISO 9001 · ITAR registered on its website. Confirm the certified scope for the specific plant producing your part.
Does Sierra Circuits import from overseas suppliers?
US customs bill-of-lading records show 9 inbound shipments for Sierra Circuits, with top origins including United Kingdom · Italy · Portugal · China.
Related suppliers
Explore other suppliers in the LightSource directory:
Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 408-735-7137
Certification
AS9100 · ISO 13485 · ISO 9001 · ITAR registered
Evaluating suppliers like these?
This profile comes from a public-data sample of around 1,000 companies. Book a demo to see the full LightSource marketplace and supplier discovery platform — 1M+ credible suppliers, with AI-run sourcing events.