High Density Interconnect (HDI) Boards
Sierra Circuits is a US based manufacturer of High Density Interconnect PCBs (HDI PCBs). Our HDI capabilities include laser microvias, blind and buried vias, fine lines and spaces, sequential lamination, via-in-pad technology. We have provided microelectronic pcbs with fine pitch devices down to 200 microns, using 50 micron laser drilled via-in-pad technology and thin build-up materials. Upload your data and receive a free consultation and review of your HDI design today or contact us if you need any design help. Experience our expertise and feel the difference.
Please convey to all the Sierra Circuits team our thanks for a job well done. We received the boards as promised and they are now in use in our
production test areas.
Sierra Circuits has been consistent with great level of service, product quality, timely delivery of PCBs, and timely responses to all questions.
Just got the boards in my office. They look great! To you and your team a hearty thank you! 
I have found Sierra Circuits to be EXTREMELY supportive in resolving any issues in our PCB/Assembly. I feel they have consistently met me more than half way, which makes my job easier.
Thank you very much for the great job with my previous order! Everything was built right on time and quality was good! 
Thanks for all of your help. You have great engineers. They were on phone with me constantly until I fixed all design/manufacturability issues. I really do appreciate the service.
Thanks for the great work on the boards! Your company is at the top of my list for future work.