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PCB Assembly

PCB Assembly

Circuit Board Assembly

PCB Assembly is a process that requires knowledge not just of PCB components and assembly but also of printed circuit board design, PCB fabrication and a strong understanding of the final product. Circuit board assembly is just one piece of the puzzle to delivering the perfect product the first time - without rework or assembly errors.

San Francisco Circuits is a one-stop solution for all circuit board production services. Our clients hire us to be the full turn-key provider for their project from manufacturing to assembly and testing. Through our strong network of well-proven circuit assembly and manufacturing partners, we can provide the most advanced and nearly limitless capabilities for your prototype or production PCB application.

Save yourself the trouble that comes with the procurement process and dealing with multiple components vendors. Our experts will find you the best parts for your final product.

Check out our PCB component overages "cheat sheet" to help you know how many of each component size need to be ordered and at what quantity.



Get your PCBs Built-Fast.

Contact us for a PCB quote
or call us at 1-800-SFC-5143

PCB Assembly


We offer the following PCB assembly services:

-          Quick-turn prototype assembly

-          Turn-key assembly

-          Partial turn-key assembly

-          Consignment assembly

-          RoHS compliant lead-free assembly

-          Non-RoHS assembly

-          Conformal coating

-          Final box-build and packaging


Capabilities Testing Services

Surface Mount Technology / Parts (SMT Assembly)

Through-Hole Device / Parts (THD)

Mixed Parts: SMT & THD assembly

BGA / Micro BGA / uBGA

QFN, POP & lead-less chips

2800 pin-count BGA

0201 / 1005 passive components

0.3 / 0.4 Pitch

PoP Package

Flip-chip under-filled CCGA

BGA Interposer / Stack-up

and more…

X-Ray (2-D and 3-D)

BGA X-Ray Inspection

AOI Testing (Automated Optical Inspection)

ICT Testing (In-Circuit Testing)

Functional Testing (at the board & system level)

Flying Probe


BGA Rework

Engineering Rework

BGA Reballing

5 Essentials we Provide to Ensure Quality PCB Assembly

  1. Engineering Support - Design for Manufacturability & Design for Testing Feedback from our Experts
  2. Nitrogen Re-Flow - Improves soldering quality and enlarges process window
  3. Full X-Ray Inspection - Assists in the inspection process by real time X-Ray inspection and image analysis
  4. Automatic Optical Inspection (AOI) - Inspection for defects, such as missing & skewed components, offset, incorrect parts and polarity
  5. Flying Probe Test - 100% short and open, failure of components, open & void issue on BGA/QFN

Contact our engineers to discuss your next assembly project.

Get professional advice on material selection, stack-up, copper weight, final finish, filled vias, stacked vias, blind and buried vias, drill to copper requirements and much more:

Get your PCBs Built-Fast.

Contact us for a PCB quote
or call us at 1-800-SFC-5143

Turn-Key PCB Assembly

We offer both turn-key and partial turn-key printed circuit board assembly.

For full turn-key services, we manage and produce everything including manufacturing the circuit boards, finding & ordering PCB components, quality inspection & testing and the final product assembly. We even have a network of PCB designers to assist with the layout of the boards. Our technical experts provide their knowledge to each order, whether it be a low volume PCB assembly prototype project or a large scale HDI PCB production run.

Prototype PCB Assembly

PCB prototyping has always been one of our most requested services, whether it’s PCB prototype fabrication or assembly. Our expert engineers will check and test your layout to ensure the correct prototype is fabricated and assembled on the first assembly run. Through our network of PCB component suppliers and SMT assembly engineers, we can ensure you a quick turn around and top quality circuit board. We offer low volume circuit assembly for prototyping with DFM and DFT to eliminate possible issues in your product.


Assembled Microwave RF / PCB

Procurement & Assembly Lead Times

The final lead time for your circuit board assembly order is procurement lead time plus assembly time. On average, lead times for assembly are 1-5 days for just PCB assembly and 10-16 days for turnkey PCB assembly.

If you have a PCB design that requires fine pitch, a rush order or even the challenge of getting a hard-to-find component you have San Francisco Circuits, your PCB partner who is flexible and dependable for your most complicated needs!

Call our circuit assembly experts at 800-SFC-5143 to make your concept into reality!

Call us: 1-800-SFC-5143

Or EMAIL US to discuss & quote your project

San Francisco Circuits, Inc.

1660 S Amphlett Blvd #200
San Mateo,CA 94402
Toll-Free: (800)732-5143


San Francisco Circuits - San Diego

3914 Murphy Canyon Rd., Suite A244
San Diego, CA 92123
Local: (858)576-7202

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Latest News


Whether it’s a simple bare board for continuity and netlist testing or functional test of an assembled board, tests are always strongly recommended. We offer a wide variety of PCB testing and inspections for all boards we provide - both bare board fabrication and assembled PCBs. Check out our updated PCB testing & inspection capabilities.

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How many parts need to be ordered for your assembled boards? This is a question we hear on nearly every PCB assembly project we undertake. Our overage cheat sheet below will help you know how many of each component size need to be ordered and at what quantity.

Read more

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