Sierra Circuits: Micro-Electronics PCB Division

In 2005 Sierra opened a new Microelectronics Division to serve the fast growing need for really small, complex PCBs for the Microelectronics market. This division provides PCBs with less than 2 Mil (0.002") lines and spaces.

To get a quote on your microelectronics design, please upload your design files at

Please do mention the word "MICROELECTRONICS" in special notes, when asking for a quote.


Download brochure
  • 30 Micron Lines/Spaces (1.25 mils) (0.00125")

  • Very Thin Film Build-Ups down to 1 mil thick

  • Low CTE Metal Cores Coplanar Surfaces

  • Blind/ Buried Vias

  • Multilayer Sequential Buildup)

  • Laser-drilled holes as small as 2 mils

  • Fast Delivery (< 4 Weeks available)

  • Can engage in R&D projects

Microelectronics Features and Applications

  • 200 micron core via pitch

  • 50 micron laser drilled vias

  • 25 micron traces and spaces

  • Semiconductor Packaging Substrates

  • Wire bond and flip chip

  • Chip Scale Packages (CSP)

Actual PCB (under microscope) showing sub-2 Mils (0.002") traces and spaces

Download one page flier showing actual 1 mil lines (0.001")

Read a PCB007 article by Ken Bahl (President of Sierra Proto Express)

For all your microelectronics inquiries, please contact Amit Bahl at
Phone: (408)891-7872