Sierra Assembly
California electronics assembly house offering PCB assembly, wire harnesses and box build, with ITAR registration and AS9100 certification.
Summary rewritten from the vendor site because the catalog version did not match it.
What they do
Sierra Assembly is a California electronics assembly house based in Chino, offering PCB assembly, wire harness assembly, box build and PCB fabrication services.
The company states AS9100 Rev-D and ISO 9001:2015 certification and ITAR registration.
Its low-volume PCB assembly page states 24-hour turnaround may be available for qualifying low-volume projects, with quick-turn and prototype builds.
Other processes stated on their site
Capabilities
Wiring harness
Custom cable and wire harness assembly including complex multi-branch harnesses, with 100 percent continuity testing stated.
PCB assembly
PCB assembly including low-volume and quick-turn builds, with 24-hour turnaround stated as available for qualifying low-volume projects.
Commercial terms
Minimum order
Not stated
Quoting
By request
Cost tier $$$ of $$$$, ProductFlo classification
Sierra Assembly is a US assembly house in Chino, California, offering quick-turn and low-volume PCB assembly with AS9100 and ITAR registration, which matches the domestic quick-turn tier.
Alternatives
Compare side by side- Quality Cable Systems
Kansas City cable and wire harness assembly provider building to IPC/WHMA-A-620, with box build services.
- San Francisco Circuits
San Mateo single-source PCB fabrication and assembly provider working through a partner factory network, with instant online quotes.
- Rush PCB
Silicon Valley PCB fabricator and assembler offering full turnkey builds from prototypes to production volumes.
- Scanfil
European EMS provider offering electronics manufacturing, sheet metal fabrication and system integration from 16 facilities.
Sources
Not verified
- MOQ
- online quote
Last verified November 7, 2026. Listings are informational and are not endorsements. Cost tiers are ProductFlo's classification, not quotes: confirm pricing, lead time and capability with the vendor.