What is the thickness of copper in PCBs
The commonly used thickness of PCB copper foil in the world are 17.5um, 35um, 50um and 70UM. General customers do not have special remarks when making PCB. The copper thickness of single and double sides is generally 35um, i.e. 1 a copper. Of course, some of the more special circuit boards will use 3oz, 4oz, 5oz... 8oz, etc., according to the product demand to choose the appropriate copper thickness
Generally, the copper thickness of single and double sided PCB is about 35um, and the other copper thickness is 50um and 70UM. The thickness of copper in the surface layer is 35um and that in the inner layer is 17.5um. The use of copper thickness of PCB mainly depends on the purpose of PCB and the voltage and current of signal. 70% of circuit boards use 35um copper foil thickness. Of course, for the circuit board with excessive current, the copper thickness will also use 70UM, 105um, 140um (very few)
The thickness of copper sheet is different with different uses. Ordinary 0.5oz, 1oz, 2oz are mostly used in consumer and communication products. More than 3oz thick copper products, mostly used for high current, such as high voltage products, power board
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