About Us

"The bitterness of poor quality remains long after the sweetness of low price is forgotten." Benjamin Franklin

About Us

Sierra Assembly Technology Inc. sprouted from humble roots in 1982, operating with one simple pick and place machine in a 7,000 square foot building. We have since more than tripled the square-footage of our working space, now running two fully automated SMT assembly lines in the 20,000 square-foot complex we call home.

Change is inevitable with the growth we’ve experienced; our production has both expanded and become more efficient. However, we remain a small business at heart, with the versatility to accommodate a wide variety of customer needs, and the disposition to ensure these needs are met sufficiently. Over the years, we’ve worked with industries of all kinds — from those in government and healthcare , to the world of entertainment — and Sierra has proven, again and again, that we’re equipped to supply for any type of business.

For more than 30 years, Sierra’s goal has been to build premier circuit board assemblies right here in our own local facilities. Whatever changes may come for our industry and for our company, we believe in American-made products and we believe in creating, and keeping, jobs in America.

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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