
You Dream. We Deliver.
Turnkey Pro by Sierra Circuits
PCB Fabrication, Component Procurement, and Assembly.
- Bundled together in an entirely-online process.
- Reviewed and tested by Engineers.
- DFA & DFM Checks on every order.
- Shipped from Silicon Valley in as fast as 5 days.

You Dream. We Deliver.
Advanced PCBs by Sierra Circuits
Custom boards with a dedicated account manager and stack-up assistance.
- Complex PCB requirements.
- Mil-spec & Class 3 with HDI features.
- Blind & Buried Vias.
- Flex & Rigid-Flex boards.
Order the PCB that’s right for you.
Advanced PCBs
Custom quote and order with a dedicated account manager and stack-up assistance
• Complex PCB requirements
• Special stack-up help / NPI review
• Files evaluated by engineers
• Quote sent by email within a few hours
• Mil-spec/Class 3
• HDI features
• Blind/buried vias
• Metal-core
• Flex/rigid-flex
Fab + Assembly
Instantly quote and order boards online with full turnkey options
Fabrication
• Standard technology PCBs
• More surface finishes/materials
• Complete DFM check
• Via-in-pad feature available
• 1-day turntime available
Assembly
• In-house assembly (optional)
• Complete DFA check and flying probe testing available
• Component engineering assistance and procurement
Self Service Boards
Automated PCB fabrication for simple technology
• Completely self-service
• Fast and easy online ordering
• Bundled PCB & Assembly available
• Quickturn available
• Turnkey Pro service included
• NoTouch service included
Get on board with Sierra Circuits
Designers choose Sierra because…
This is what our customers are saying about us.

“Sierra will do things the others won't try.”

“Sierra does good, reliable work. As a technology leader, I know I can count on Sierra to fabricate using even the most advanced process design rules whenever I need to, and to deliver on time.”

“Sierra provided us high quality boards, perfectly assembled and in a very short amount of time!”

How To Handle Current Return Path for Better The Signal Integrity
Before we start with today’s article, something needs to get engraved in your minds. If some current goes out somewhere, it will always come back to the source, with no exceptions. Hence, there is always a current loop, a current return path along with the current-carrying traces. So, the current does not really care if you provide it that return path, it will find its own. But if you do not, it will interfere and mess around with your entire circuit, while finding its own way back.