San Francisco Circuits

PCB Fabrication & Assembly; RF, Military Grade, Flex, & Metal Core PCB Capabilities for Unmanned Systems

United States of America
San Francisco Circuits
PCB Fabrication & Assembly; RF, Military Grade, Flex, & Metal Core PCB Capabilities for Unmanned Systems
1660 S Amphlett Blvd #200 San Mateo, CA 94402 USA United States of America Regional offices

Flex & Rigid Flex PCBsSan Francisco Circuits is an industry leader in all aspects of PCB fabrication and assembly.  We work with a strong network of PCB manufacturers and PCB assembly houses, both domestic and offshore to provide a one-stop solution and the best value possible for all printed circuit board requirements.

San Francisco Circuits provides both prototype PCBs and large PCB production volumes for every application of unmanned systems utilizing both basic and advanced technologies.

Our team of experienced technical experts strive to provide a quick turnaround, not just on printed circuit boards, but also customer service.

PCB Fabrication & Manufacturing Capabilities

Printed Circuit Boards for Drones, UAVs, UGVs and Robotics

Specifications Standard Technology Advanced Technology
Number of Layers 1 – 12 14 – 40
PCB Board Material Rigid PCB Materials
Megtron 6
Astra MT77
Tachyon 100G
Nelco 4000
Rogers 3000 Series
Rogers 4000 Series
Rogers 5000 Series
Rogers 6000 Series
Taconic TLY
MCPCB, Aluminum Core & Copper Core Materials
Aluminum Core
Copper Core
Ventec VT-4A1/VT-4A2
Aismalibar Fastherm
Aismalibar Flextherm
Flex PCB Materials
Shin-Etsu – Epoxy
Adhesive System
Rogers – Epoxy
Adhesive System
Dupont FR – FR Acrylic
Adhesive System
Dupont LF – LF Acrylic
Adhesive System
Adhesiveless Base Materials
Aluminum Core
Ventec VT-4A1/VT-4A2
Aismalibar Fastherm
Aismalibar Flextherm
Copper Core
Nelco 4000
Rogers 3000
Rogers 4000
Rogers 5000
Rogers 6000 Series
Taconic TLY
Min. Circuit Board Thickness 2 layer – 0.010″
4 layer – 0.020″
6 layer – 0.020″
8 layer – 0.062″
10 layer – 0.062″
12 layer – 0.062″
2 layer – 0.005″
4 layer – 0.010″
6 layer – 0.031″
8 layer – 0.040″
Max. Circuit Board Thickness 2 layer – 0.125″
3-12 layer – 0.200″
0.250″ – 0.500″
Max. Circuit Board Size 16″ x 22″
12″ x 21″
10″ x 16″
16″ x 22″
12″ x 21″
Copper Thickness 0.5 oz – 3 oz 4 oz – 10 oz
Hole Aspect Ratio 7 : 1 15 : 1
Min. Hole Size 0.008″ 0.004″
Min. Trace/Space 0.006″/0.006″ 0.002″/0.002″
Min. Drill-to-Copper 0.010″ 0.005″
Min. Pitch 1 mm 0.3 mm
PCB Board Finish HASL (Solder)
Lead Free Solder
Gold Fingers
White Tin
Gold (ENIG/Hard/Soft)
Selective Gold
Immersion Silver
White Tin

PCB Assembly

PCB AssemblyWe offer a one-stop service for all your printed circuit board assembly needs, taking care of the hard work of component procurement and liaising with vendors. PCB assembly services offered include quick-turn prototype, turnkey, partial turnkey, consignment and lead-free assembly. Our average lead times are 1 to 5 days for assembly with or without turnkey (component procurement).

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PCB Technology

Military Grade PCBs (Mil Spec)

milspec pcbs - military grade printed circuit boardsCertified mil-grade PCBs are one of SFC’s specialties. With PCB manufacturing capabilities in the United States, we can fabricate high-quality reliable MilSpec certified flexible or rigid circuits. SFC manufacturers work to certification standards such as MIL-PRF-55110, MIL-PRF-50884 and MIL-PRF-31032 with a range of finishes, solder masks, silk screens and fabrication methods.

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Flex PCBs

Flex PCBs - Flexible Circuit Board manufacturingFlex PCBs use the same components as rigid PCBs but are fabricated on a flexible base material, allowing the board to conform to a wider range of desired shapes. The size and weight reduction and increased resistance to noise and vibration make flex circuits highly useful in a wide variety of applications, including Transport, Communications, Aerospace and Unmanned Vehicle Systems.

We can provide heavy copper Flex PCBs and double-sided multilayer Flex PCBs. Turnaround for your design can be as fast as 24 hours.

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Metal Core PCBs

metal core pcb manufacturing

Metal core PCBs use a base metal such as aluminum, copper or a special alloy to dissipate heat away from sensitive components and other critical parts of the design. This allows heat transfer that is 8 or 9 times faster than in traditional FR4 boards. Metal core PCBs are ideal for applications such as LED lighting, power converters and motor control. We can provide aluminum or heavy copper core PCBs for prototypes or production quantities.

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HDI PCB technology is one of the fastest growing areas of the PCB market. HDI circuits provide much higher wiring densities than standard PCBs, and incorporate features such as blind/buried vias, vias-in-pad and micrometre-level circuit geometries. HDI technology can reduce the size and weight of your boards while enhancing signal transmission and reducing signal loss. We can provide a variety of board construction methods and materials, including flexible HDI PCBs.

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RF PCB Manufacturing

Radio Frequency printed circuit boards (RF PCBs)Radio Frequency printed circuit boards (RF PCBs) are high frequency PCBs that operate above 100MHz; anything above 2GHz is classed as a Microwave PCB. Our designers can assist with everything from saving costs on simple radio frequency circuit boards, to manufacturing advice for demanding fifty-layer layouts and concepts. Our RF PCB capabilities include manufacturing and assembly for both prototypes and production quantities.

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PCB School

SFC has developed a unique offering for engineers and PCB buyers. The PCB School is a free online resource created to help educate users on various technologies, equipment, and buying resources relating to printed circuit boards.

Find out more: SFC’s PCB School

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Regional Offices & Locations
San Francisco Circuits, Inc. United States of America 1660 S Amphlett Blvd #200 San Mateo, CA 94402 USA +1.800.SFC.5143 Contact Office Contact Website
San Francisco Circuits, Inc. United States of America 3914 Murphy Canyon Rd., Suite A244, San Diego, CA 92123 USA +1.858.576.7202 Contact Office Website