4 Layer Rigid PCB of 3.2mm

4 Layer Rigid PCB of 3.2mm

It is not all copper noodles eat tin parts, so the non-tin eating area will print a layer of copper noodles to separate tin eating substances (usually epoxy resin), it avoids short circuit between non-tin lines. According to different processes, it can be divided into green oil, red oil and blue oil.
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Product Details

We are a manufacturer of plain circuit board, electric circuit board, Pcb Prototype And Assembly. In the new economic situation, our development strategy should mainly focus on how to maximize our strengths and avoid our weaknesses, and seize opportunities to meet challenges. We welcome you to join us in this path of creating a prosperous and efficient business together.

PCB Knowledge:

Through holes can make the lines more than two layers switch on each other, the larger ones are used as part plugins, and the non-through holes (nPTH) are usually used as surface mounting positioning and fixing screws for assembly.

It is not all copper will be soldered components, so the non soldering area will print epoxy resin, it avoids short circuit between non-tin lines. According to different processes, it can be divided into green oil, red oil and blue oil.

Silk screen is not necessary. The main function is to mark the name and position frame of each part on the circuit board. It is easy maintenance and identification after assembly.

Because copper surface in the general environment, it is easy to oxidize, and it leads to no tin (solder poor), so it needs to protect the soldering area. The methods of protection include HASL, ENIG, Immersion Silver, tin, Immersion Tin, and OSP, which have their advantages and disadvantages; they are generally called Surface Finish.( quick turn pcb)


Process of pcb manufacturing:


Our Factory:




Our Company is UL,ISO9001,ROHS and GJB9001B certified. 


Packing and Shipping:




1. How to Get a quotation?

For PCBs,pls send us the Gerber File.For PCBA,pls send us the Gerber file and BOM(Bill of Materials)

2. What is the MOQ?

No MOQ.1 pcs is ok.

3.What is the lead time?

For PCB orders,the lead time is 2 to 10 days.For PCBA orders,the lead time will be 15 to 30 days.

4.Will the boards be tested before shippment?

Yes,all PCBs will be tested by Flying Probe or E-test.For PCBA,we will have AOI,X-ray,and functional test

Email us to get a quote: admin@brightcircuits.com


'Based on domestic market and expand overseas business' is our development strategy for 4 Layer Rigid PCB of 3.2mm. We have close technical cooperation relationship with our business partners, and we establish a high-quality and professional technical team, able to provide users with advanced and reliable products and solutions. We firmly believe that product quality is the life of enterprise development, therefore we take quality refinement as our eternal pursuit.
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