Multiple layers make it easy for the PCB traces to route by jumping over from one layer to another to complete the path. Hence many complex circuits can be routed easily.
Also the demand for compact electronic devices boosts the need for multiple layers PCB.
In PCBs with 4 or more layers, supply and ground is separated. This offers isolation between supply and ground pins and hence avoids short circuit.
Read More: Multilayer PCB
#PCB Design
On a Flex Printed Circuit (FPC) made out of Kapton polyimide, will anything bad happen if I put a VIA in a part of the FPC that has to bend? VIA size: 0.2 mm hole diameter in 0.4 mm copper diameter. FPC bend radius: 0.7 mm. Kapton thickness: 0.2 mm. Copper weight: either 2 oz or 1 oz (I haven’t decided yet)
I send my PCB design to manufacturer for prototype, but they send back deviated PCB samples with additional zig-zag. Why are there zig-zag lines on it? Reducing interference?
I design a PCB file for samples and send it to manufacturer, but the samples can’t work now. We are trouble shooting the reason now. What are the common reasons you have met in a wrong PCB?
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