Bare Board Printed Circuit Boards

A bare board PCB and the bare board testing play critical roles in PCB manufacturing. A Bare board is the PCB before the electric components or through holes are placed on it. A bare board PCBs are comprising of:

  • Substrate
  • Metal Coating
  • Conductive Pathways

Through a bare board layout, you could determine the placement of the components. At Technotronix, we configure bare PCB boards as per your specifications while also offering effective bare PCB testing capabilities. Our bare printed circuit boards also assist you in penalization, placing PCB on large boards, mounting and plating process. We understand the complexity of bare board PCB manufacturing and provide the best product which can fit your needs.


Features Capabilities
Maximum Board Layers Up to 12 layers
Bare Board Types Single Sided PCB, Double Sided PCB, Multilayer PCB, Rigid PCB, Flex PCB, Rigid-Flex PCB
Board thickness (multilayer board) Maximum:0.13" (any layers); Minimum: 0.025" (4 layer)
Board thickness (1- or 2-layer board) 0.02", 0.031”, 0.039”, 0.047”, 0.062”, 0.078”, 0.094”, 0.118", 0.125"
Tolerance of board thickness +/- 10%
Base materials FR-4, FR-406 (Tg 150 deg C), FR-408 (Tg 170 deg C), G10, CEM3, Rogers, Alumina Ceramic
Copper weight and minimum trace width/space required 0.5 oz (min. trace width/space 4 mil), 1 oz (min. trace width/space 5 mil),
2 oz (min. trace width/space 7 mil), 4 oz (min. trace width/space 12 mil), 6 oz (min. trace width/space 20 mil), 8 oz (min. trace width/space 40 mil)
Minimum conductor width and space 0.003" (0.075 mm) for conductors including trace and annular ring
Minimum finished hole size 0.006" (0.15mm).
Silkscreen/Legend colors White, yellow, black, pink, red
Solder Mask (LPI) Colors: Green, Black, Red, Blue, Purple, Yellow, Silver, Gold
Maximum hole aspect ratio 10:01
Surface plating Tin/Lead HASL, immersion gold (soft gold), electrolytic gold (hard gold), immersion tin, immersion silver, OSP
Blind/buried vias Yes
Bare Board Testing Isolation Testing: This means verifying that the required resistance between two separate electrical connections is met.
Continuity Testing: Which involves verifying there are no open points within the circuit.


  • Saving on Costs - This stands to be a reason since you are undertaking extensive testing in the initial stage of design. Therefore, it helps in preventing the repair and maintenance costs of the PCB bare boards.
  • Saving on time - Once again, since you are identifying issues in the initial stages, you don’t tend to lose out on precious time. This can be a huge source of competitive advantage, since this could mean quick time-to-market.
  • Easy Resolution - With bare board testing it will be easy to identify and resolve issues early on.
  • Reliability - The most important advantage of bare board testing is its reliability. At a time of miniaturization, boards are extremely densely populated. Therefore, it is important to ensure that your bare boards are up to soldering the expensive components on it.
  • Our bare board testing is done via the Flying Probe Method that works well even for small production volumes and offers affordability as well as flexibility.


  • Consumer electronics
  • Medical
  • Automotive
  • Telecommunication
  • Renewable Energy and more.


At Technotronix, we have over 4 decades of experience in fabricating as well as assembling high quality bare PCB boards. Our team of experts is fully equipped with the requisite knowledge and industry best practices to assemble highly complex bare boards.

Whether your requirement is rigid, flex or rigid flex bare board (PCB), we have you covered. From single side to multi layered boards, you can count on us. We also have a wide range of materials available to meet your bespoke needs. Our specialty lies in catering to RoHS compliant bare circuit boards.

The big advantage that we offer is in terms of quick turnaround that ensures that you do not have to wait for days for us to fulfill your requirements.

We are an ISO 9001:2015 and AS9100 Rev. D certified PCB assembly company gives our clients confidence in our adherence to quality standards.

From requirements for printed circuit board prototypes to large production runs, we have you fully covered.

All you need to do is to share your exact requirements with our team and we will get back to you with a competitive, and custom quote.


A bare board is the printed circuit board before the electric components or through holes are placed on it. A bare board comprises of:
  • Substrate
  • Metal Coating
  • Conductive Pathways

Absolutely! From single side to multi-layered boards, we have you covered.

We cater to the following materials for Bare PCBs:
FR-4, FR-406 (Tg 150 deg C), FR-408(Tg 170 deg C), G10, CEM3, Rogers, alumina ceramic.

Yes, we offer isolation and continuity testing through the Flying Probe method.

Totally. Share your requirements with us and see us quickly fulfill them.

Yes, we offer turnkey services that offer you complete peace of mind.

Totally, with miniaturization being the order of the day, its importance will only increase.

Yes, absolutely.
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Do you have any bare board PCBs requirements? Request a bare board PCB fabrication quote. Alternatively, email BoM, Gerber files, and other required details at or call us 714/630-9200.


PCB Assembled in 24 hours

Best Turn around time for Prototype PCB assembly.
Kitted and Turn-Key option as per customers requirement.


To know more about Technotronix
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