Insights

HDI Expertise Sierra Circuits specializes in High-Density Interconnect technology and turnkey PCB manufacturing and assembly, presenting a strong opportunity to upsell advanced HDI services and design-for-manufacturability improvements to existing customers seeking higher performance PCBs.

One-Stop Solution The company emphasizes a single point of support for all PCB production stages, which can be leveraged to pitch bundled services, extended warranties, and ongoing design consultation contracts to reduce customer friction and increase contract value.

Quality Certifications ISO 9001:2008, ISO 13485:2003, and MIL-P-55110 certifications highlight reliability and compliance capabilities, enabling targeted outreach to regulated industries such as medical devices, aerospace, and defense that require certified sources.

Online Enablement Recent online initiatives like Turnkey Pro and an educational website indicate readiness for digital sales motions, enabling SDRs to promote online ordering, quote automation, and self-serve design resources to accelerate lead conversion.

Mid-Mized Growth With 201-500 employees and revenue in the 10–25 million range, Sierra Circuits presents a mid-market target with potential expansion into higher-volume programs, turnkey assembly scaling, and multi-site or international inquiries.

Similar companies to Sierra Circuits

Sierra Circuits Tech Stack

Sierra Circuits uses 8 technology products and services including ISO, cdnjs, CAM350, and more. Explore Sierra Circuits's tech stack below.

  • ISO
    Certificates
  • cdnjs
    Content Delivery Network
  • CAM350
    Design
  • Webpack
    Development
  • Shopify
    E-commerce
  • Indeed
    Human Resource Management System
  • 6sense
    Marketing Automation
  • Yoast SEO Premium
    Search Engines

Sierra Circuits's Email Address Formats

Sierra Circuits uses at least 1 format(s):
Sierra Circuits Email FormatsExamplePercentage
FirstL@protoexpress.comJohnD@protoexpress.com
86%
FirstLast@protoexpress.comJohnDoe@protoexpress.com
7%
F.Last@protoexpress.comJ.Doe@protoexpress.com
4%
FLast@protoexpress.comJDoe@protoexpress.com
3%

Frequently Asked Questions

What is Sierra Circuits's phone number?

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You can contact Sierra Circuits's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Sierra Circuits's official website and social media links?

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Sierra Circuits's official website is protoexpress.com and has social profiles on LinkedIn.

What is Sierra Circuits's NAICS code?

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Sierra Circuits's NAICS code is 334 - Computer and Electronic Product Manufacturing.

How many employees does Sierra Circuits have currently?

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As of July 2026, Sierra Circuits has approximately 482 employees across 4 continents, including AsiaNorth AmericaEurope. Key team members include Chief Executive Officer: K. B.Head Of Training: K. M.Head Business Development,India: V. K.. Explore Sierra Circuits's employee directory with LeadIQ.

What industry does Sierra Circuits belong to?

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Sierra Circuits operates in the Computers and Electronics Manufacturing industry.

What technology does Sierra Circuits use?

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Sierra Circuits's tech stack includes ISOcdnjsCAM350WebpackShopifyIndeed6senseYoast SEO Premium.

What is Sierra Circuits's email format?

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Sierra Circuits's email format typically follows the pattern of FirstL@protoexpress.com. Find more Sierra Circuits email formats with LeadIQ.

When was Sierra Circuits founded?

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Sierra Circuits was founded in 1986.
Sierra Circuits logo

Sierra Circuits

Computers and Electronics ManufacturingCalifornia, United States201-500 Employees

Sierra Circuits, based in Sunnyvale, California, operates in the computers and electronics manufacturing industry, with a focus on PCB manufacturing and assembly and High-Density Interconnect technology. The company provides end-to-end PCB production services, covering design, layout, assembly, and manufacturing, with a single point of contact for customers. Founded in 1986, Sierra Circuits has served more than 20,000 customers and employs between 201 and 500 people. It holds ISO 9001:2008, ISO 13485:2003, and Mil-Spec MIL-P-55110 certifications. The business is described as family-run and minority and women-owned. Its address is 1108 West Evelyn Avenue, Sunnyvale, CA 94086, United States, and its website is https://protoexpress.com.

Section iconCompany Overview

Phone number
NAICS Code
334 - Computer and Electronic Product Manufacturing
Founded
1986
Employees
201-500

Section iconFunding & Financials

  • $10M$25M

    Sierra Circuits's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Sierra Circuits's revenue is estimated to be in the range of $10M$25M

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