Our Services

From prototyping to production to repair, Sierra Assembly Technology, Inc.
provides a broad range of circuit board manufacturing services.

Why Sierra Assembly?

We are experts of our craft, and our craft is assembling printed circuit boards.

We at Sierra Assembly are a small business at heart, which caters to the needs of large organizations. We have the versatility to accommodate a variety of PCB assembly requirements. Our 30+ years of knowledge and experience are supported by a 20,000 sq. ft. facility, one PTH and two SMT assembly lines, and the latest in design, prototyping, NPI, assembly, and testing equipment. We cater to various industries, providing our circuit board assembly services for customers in defense, healthcare, Government, and entertainment. We look forward to taking on challenging projects, which can help us enhance our skills and capabilities, and exceed the expectations of clients.


Stable - Sierra Assembly Technology Inc.




State of the Art - Sierra Assembly Technology Inc.

State of the Art

Skilled Work - Sierra Assembly Technology Inc.


I approached Sierra after being referred to them from another PCB designer. What impressed me was that they were more than willing to take a complex PCB requirement. The PCB assembly they provided was small, lightweight, but provided the amount of power needed for our computer product. Great experience.

-Susan R – Business Computer Industry

I liked Sierra’s quick turn PCB assembly services. They provided a prototype within a few days, and it worked without a hitch. I was extremely satisfied with the quality of the PCB. Their prices are great too.

-Jason G. – Telecom Industry

Sierra Assembly Technology has a great group of people to work with. They are open to almost any request and always get the job done quickly. I’ve been in some tight spots before and needed certain products within a small time window, and Sierra has always been reliable.”

-Richard S. – LED Lighting Manufacturer

Your Partner in Southern California for Circuit Board Assembly Services GET A QUOTE

Sierra Assembly Technology Inc.

10880 Mulberry Ave
Fontana, CA 92337

Phone: 909.355.5400

Email: sales@sierraassembly.com