San 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 FR4 FR406 370HR VT-47 FR408 Arlon CEM Megtron 6 Astra MT77 Tachyon 100G Nelco 4000 Rogers 3000 Series Rogers 4000 Series Rogers 5000 Series Rogers 6000 Series Taconic TLY Polyimide |
MCPCB, Aluminum Core & Copper Core Materials Aluminum Core Copper Core Ventec VT-4A1/VT-4A2 Aismalibar Fastherm Aismalibar Flextherm |
Flex PCB Materials Kapton 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 Polyimide |
| 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″ |
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| 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″ |
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| 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 Copper Gold Gold Fingers White Tin ENEPIG ENIG |
HASL Gold (ENIG/Hard/Soft) Selective Gold Immersion Silver OSP White Tin ENEPIG |
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PCB Assembly
We 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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Military Grade PCBs (Mil Spec)
Certified 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 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 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
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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- 8 Layer Flip Chip
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- High Density Wirebond Array
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- Multi Chip Module
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RF PCB Manufacturing
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
