July 27th, 2021
Our Silicon Valley facility is deemed "essential" and is fully operational to support medical, defense & other printed circuit board fabrication and assembly projects.
For your more complex boards, please send your quote request to files@protoexpress.com
You can also quote and order standard technology PCBs/Assembly online on this website.

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Sierra Circuits
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Order History

About Sierra
  • The Sierra Touch
  • Story of Sierra
  • Our Team
  • Certification
  • Careers
  • Terms & Conditions
CAPABILITIES
  • Rigid PCB
  • PCB Assembly
  • Flex & Rigid-Flex PCB
  • HDI (Blind & Buried Vias)
  • Microelectronics PCB
  • Mil-Spec & Aerospace PCB
  • Controlled Impedance
  • Our Equipment
  • PCB Design
FAQs
  • General FAQ
  • Assembly FAQ
  • HDI PCBs FAQ
  • Flex PCBs FAQ
  • Controlled Impedance FAQ
  • Microelectronics FAQ
  • Standard PCB FAQ
  • No-Touch PCB FAQ
  • Turnkey PRO FAQ
TOOLS
  • BOM Checker
  • PCB Stackup Planner
  • PCB Material Selector
  • Impedance Calculator
  • Better DFM

Sierra Circuits, Inc.

1108 West Evelyn Avenue

Sunnyvale, CA 94086, USA

Phone: (800) 763-7503

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