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PCB fabrication, assembly, and free award-winning CAD design software.

Leading the industry for over 40 years as the preferred prototype and production PCB solutions provider for design engineers. 

View our online digital brochure.

From Start To Finish – Design to Assembly 

It's no secret: your prototype costs you quite a bit of money to produce. Most of that expense is in the components, not the fabrication of the board. Still, if the board's not right, your design's not right. That's why Sunstone Circuits offers the following standard and add-on manufacturing features for your board fabrication:  

  • Less than 0.05% return rate on all PCBs manufactured
  • Our 100% guarantee on manufacturing defects
  • Optional Engineering Review to analyze and report on any manufacturability issues with your design as submitted
  • Flying-Probe Electrical Test: comparing your PCBs electrically to your submitted Gerber files
  • Self-service DFM checking with our online DFMplus service
  • One financial transaction for your boards and assembly when you select bundled assembly

Screaming Circuits specializes in building your short-run, one-off and prototype PCB assemblies, with rapid turn times and instant online quoting and ordering. Whether you prefer "Kitted" assembly or "Turnkey", Screaming does both - and with multiple awards for customer satisfaction and quality to prove it. Not only that, but Screaming Circuits will guarantee on-time delivery, ensuring that you get what you need, when you need it.

When all this is combined with the years of experience and professionalism shared between Screaming Circuits and Sunstone, you can be confident that your PCBs have been fabricated and assembled exactly to your specifications. Which means, of course, that any bugs you're chasing in your prototype won't be a stray short, open, malformed through hole or other manufacturing or assembly anomaly... Instead, you can turn all your attention to testing and verifying the circuit design.

All this is just one more way Screaming Circuits and Sunstone Circuits work seamlessly together to remove potential design issues from your prototypes - getting you through development and into production that much faster.

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  • "Easy website, friendly customer service (Sal). I'm happy with Sunstone and will keep ordering."
    F. Harwath, - Naperville, Illinois
  • “The first time I used the DFMplus service, I was very impressed. Later, I submitted some more complex boards and found the reports to be extremely helpful in identifying design issues. I usually use your PCBExpress service, and DFMplus gives me great confidence about getting accurate designs for my future board projects.”
    Jeff Bates, Impinj
  • "Your customer service really knows how to address the needs of its customers. Not only in the order process, but also in being very reactive to help stop an order before it got put into the system. Not only does this save time and funds, but it really goes to show how well your company works with its customers for repeat business. Thank you very much! Your quality, delivery, pricing and customer service are all the ingredients for a “Best In Class” company. All other companies should use you as their benchmark."
    S. Daigle, - Austin, Texas
  • "Thanks for the reply - the personal touch is excellent. Actually I've was so impressed I'm currently having you added as a supplier for use on future projects."
    Peter Vaughan, Power Integration Inc.
  • "Much better pricing than Advanced. If quality is on par with them, you will start getting all my business. You were recommended to me and your prices beat the competition!! I do a lot of Quickturns for prototypes so pricing is important."
    T. Brannon, - Houston, Texas
  • "I think the 'one stop shop' approach you are pioneering is much needed in the industry. Certainly modifies the way our company thinks about prototyping new products."
    Jeff Robinson, NetFabric Corp.
  • "You have always been very helpful when I have had questions with my order. You are the best!!!! Great customer support."
    J. Pulford, - Sioux Falls, South Dakota
  • "Hello folks at Sunstone's CAD Software, PCB123. I just placed my first order on Tuesday, received my boards on Thursday morning, and was AMAZED with the results. Beautiful! I can't wait to do more! Thanks!"
    Andrew McGeachie, Corestreet, Ltd.
  • "I honestly have to commend you for the excellent service I've received by not only your company quality but to the personal help from your staff. You have gone way beyond what most vendors provide and I sincerely appreciate doing my business with you. I think to date I've run close to 5,000 various boards through you and have been very happy with them. Please keep up the good work!"
    Ralph Landry, Mountain Electronics
  • "All I can say, is I keep coming back, there must be a reason. Great job!!"
    J. Hamilton, - Mount Airy, Maryland
  • "Great customer service team!"
    I. Jimenez, - Poway, California
  • "I have NO complaints about Sunstone's Boards and services are ALWAYS of HIGHEST QUALITY & ON TIME DELIVERY!! I design and manufacture systems and boards for 3 different companies. At this point Sunstone Circuits is doing all our prototype and production boards! I run Primrose Technology and ReflexiveTech, Inc., and have not found a better board shop!"
    Paul Primrose, Primrose Technology
  • "Wow! The new website is great. I've been using Sunstone Circuits services for several years. While the service has always been excellent, I'm constantly impressed to see how you guys keep improving."
    G. Conner, - Barrington, Rhode Island
  • "Thank you for some VERY nice and cool CAD software, PCB123, I love the fact that it is free! :-) and I'm not by any means a PCB expert, and yet it took me <10 minutes to learn just about all of the software. Now that is good software."
    Alex Stewart, Energic Visions
  • "Excellent service, been using your services for years."
    J. Crabill, - Stafford, Virginia
  • "Telephoned in for technical help and received good answers and suggestions."
    J. O'Shea, - Elgin, Illinois
  • "I think your interactive web ordering process is improving each time I use it. Perhaps it is just me, but I'd like to see Layer 1 also called the TOP layer, and Layer 2 call also called the BOTTOM layer. I have to research it each time."
    J. Maurer, - Ames, Iowa
  • "I've been actively using Sunstone since 2006. I've come to appreciate greatly the consistency of a high level of performance against promise delivery dates, quality product, competitive prixing and a very strong customer support group. Any questions or issues with fab data files are raised quickly and resolved real time. Since many of my designs are time critical to meet proof of concept or sales samples, it's critical to have a supplier that can be counted on. And this is why after 7 years I'm still a "Sunstone" guy. Thank you Sunstone and looking forward to the next board engagement."
    Greg Martocello, - Rochester, New York
  • "Sunstone has always given me excellent service, often beyond what I've asked for. Thanks."
    D. Mertz, - Derwood, Maryland
  • "I’ve been using Sunstone's CAD software (PCB123) since the conception of this project last May. The results and service have far exceeded my expectations. The schematic software and layout tools cannot be beat (for free) and I have never experienced such timely and thorough support in my 10 years as an engineer."
    Bill Conley, FassTech