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Sierra Circuits has advanced PCB industry standards since 1986. Our engineers can fabricate complex technology that the others won't even try.

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Industrial Manufacturing

Sierra Circuits is ITAR certified
Sierra Circuits is Mil-PRF-55110 and MIL-PRF-31032 certified by the US Dept of Defense
Sierra Circuits is IPC-6012, IPC-6013, IPC-6015, IPC-6018, and IPC-A-600 certified
Sierra Circuits is NIST Certified
Sierra Circuits PCBs are RoHS Compliant
Sierra Circuits PCBs are Reach Compliant

From standard PCBs to advanced technology made from exotic metals. Choose the PCB that's right for you.

Turnkey PRO

Fabrication, Procurement, & Assembly. PCBs fully assembled in as fast as 5 days.

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Standard PCBs

Fabrication. Procurement & Assembly optional. Flexible and transparent for advanced creators.

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Advanced PCBs

Complex technology, with a dedicated CAM Engineer. Stack-up assistance included.

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Board Type Quick-turn Rigid PCB prototypes Standard Rigid PCBs Rigid, Flex & Rigid-Flex, HDI, Aerospace & Mil-Spec
Assembly & Components Components Included Assembly to IPC-A-610-Class 2 specs Components & Assembly Optional Components & Assembly Optional
Layer Count 2, 4, 6, 8-layer boards Up to 12 layer boards Up to 30 layer boards
Turn Time 5, 7, and 10 business days 1 , 2, 3, 4, 5 and 10 business days Same Day Available - up to 4 Weeks
Materials FR-4 lead-free FR4, FR4-06, FR4-lead free FR-4 / High-Temp. FR4 / Rogers / Polyimide / Aluminum Clad / Metal Core / Highspeed / Others
Plate Finish ENIG / HASL ENIG / HASL / Electrolytic Hard Gold / Electrolytic Soft Gold / Immersion Silver Electrolytic Hard Gold / Soft Gold / Selective Gold / ENIG / OSP (Shikoku F2) / OSP (Entek) / Immersion Silver / Leaded & Lead-Free HASL
Qualifications Built to IPC-6012 Class 2 Specs No microsection certs or IPC coupons Built to IPC-6012 Class 2 Specs No microsection certs or IPC coupons IPC-6012 Class 1, 2, 3, 3D / IPC-6013, Class 1, 2, 3 / MIL-PRF-31032 / MIL-PRF-55110 /ISO 9001:2015 / ISO 13485:2016 / Others
Board Thickness 0.031″ / 0.062″ / 0.093″ 0.125” / 0.093″ / 0.062″ / 0.047″ / 0.040″ / 0.031″ / 0.020” / 0.014” / 0.010” Full Range Available
Copper Weight Inner layer copper: 1 oz. Outer layer (finished) copper: 1 oz or 2 oz. Inner layer copper: 1 oz. Outer layer (finished) copper: 1 oz or 2 oz. Inner layer copper: .33oz, up to 6oz. Outer layer (finished) copper: 1oz, up to 6oz.
Minimum Trace / Space 4 mil (0.004″) trace / space 2 mil (0.002″) trace / space 1.5 mil (0.0015″) trace / space
Zero Defect Guarantee Reduce Re-Spins. Zero Defects, Guaranteed! Reduce Re-Spins. Zero Defects, Guaranteed! Reduce Re-Spins. Zero Defects, Guaranteed!
Our Pitch

Turnkey PRO is the Best Value for MOST PCBA Customers.

Turnkey PRO sources the whole package, creating a thread from design to delivery. Fabricating PCBs. Procuring parts. Assembling your boards.

Order Zero-Defect PCBs entirely online and get to market faster.

Order the most reliable PCBs, entirely online.

Get an instant online quote with expanded options for edge plating, gold fingers, additional materials, and surface finishes. Component Procurement and In-house Assembly optional.

Order Zero-Defect PCBs a-la carte for maximum flexibility.

The world's most advanced PCBs, proudly made in The United States.

Exotic materials, blind, buried, and micro-vias, built-up laminations, and the highest signal integrity in the industry.

Engineers at the world's most innovative companies choose Sierra Circuits for the most reliable PCBs, made in America.

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+ Full Specifications for Turnkey PRO + Full Specifications for Standard PCBs + Full Capabilities for Advanced PCBs

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Daniel Stanphill

SMT Process Engineer - Aurora Boardworks

I was introduced to your tools through following Petr Dvorák. If a titan of the industry such as Petr is using and promoting your tools, they must be worthwhile!

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Petr Dvorak

Hardware Designer - Beny-devices

The Sierra Circuits calculators are the genuine hidden gems of the internet.

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Juan Francisco Aguerre's Image
Juan Francisco Aguerre

R&D Specialist – Sciences Green Incorporation

The Bandwidth Calculator goes beyond basic functionality by offering the ability to calculate critical lengths for various track types. Additionally, it allows direct input of parameters such as DTR, frequency or rise time, further enhancing its usability and efficiency.

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Anand M.

Hardware Design Engineer – Luminar Technologies

Sierra Circuits has been an incredible learning resource for my PCB design. Unlike paid options for PCB tools, Sierra Circuits’ Impedance Calculator is free and user-friendly, providing pretty accurate results that compare well with fab house data. Not only that, it has a community to support newbies and also has good study materials and webinars to support designers with their designs. Really appreciate Sierra Circuits for their efforts.

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Hossein Pirhadi's Image
Hossein Pirhadi

R&D Specialist – Sciences Green Incorporation

The Bandwidth Calculator is a great tool! First, it is easy to use. Second, it is quick to work with and gives not only the characteristic impedance, but also propagation speed, inductance, capacitance, and even the effective dielectric constant. And it is just for the SE traces. There are other tools by Sierra for differential impedance, crosstalk, via, etc. I have really enjoyed using them. 👍

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Juan Francisco Aguerre

Embedded System & Industrial Robotics Engineer at ADIMRA

These tools offer invaluable flexibility to designers, allowing them to tailor their approach according to their specific criteria. By dynamically displaying the calculations for each completed field, it provides designers with comprehensive information that allows them to leverage their expertise and choose the most appropriate criteria for their designs.

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Other Ways Sierra Circuits Can Help

We have many resources designed to help you, no matter where you are in your journey to becoming a PCB expert.

PCB Manufacturing & Assembly Processes

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PCBs manufactured and assembled in the United States

Turn-times as fast as 1 day.

Sierra Circuits can manufacture your PCB and have it expedited to you within 24 hours. Full turnkey boards, with assembly and components in as fast as 5 days. Get an Instant, Itemized Quote

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