As the conductor of pcb, copper foil is easy to adhere to the insulating layer, and forms a circuit pattern after corrosion. Today, I will introduce some knowledge about the
copper thickness of PCB boards.
The area of copper foil is represented by the weight of copper, 1oz=1.4mil, and the average weight of copper foil is represented by unit weight, the formula: 1oz=28.35g/FT2 (FT2=20 square feet, 1 square foot=0929034㎡).
International pcb copper foil commonly used are: 17.5um, 35um, 50um, 70um. Generally, customers do not have special remarks when making pcb. The copper thickness of a single piece is generally 35um, that is, 1 amp copper. Of course, some special circuit board thicknesses are selected according to ... 8OZ, 4OZ, 5OZZ, etc., and the appropriate thickness of the product needs to be selected.
The copper thickness of the PCB copper plate is generally 5 thick and 5 thick, and the other copper thickness is 50um for a single layer. The thickness of 0 sheets is generally 35um, and the thickness of the inner copper plate is 17um. The main copper thickness of the PCB board is 5um. PCB thickness is 5um thick. 70% of the circuits use 35um copper foil board 35. Of course, for the current line, the length of copper thickness is 70um, 10um, 140um (rarely), etc.
Different uses, ordinary 0.5oz, 1oz, 2oz, mostly used in consumer and communication products. More than 3oz are thick copper products, and are mostly used for large currents, such as high-voltage products, power supply thickness!
Pcb boards have different uses, and the thickness of copper used is also different. Like general consumer and communication products, 0.5oz, 1oz, 2oz are used; for most high-current products, such as high-voltage products, power boards and other products, more than 3oz are generally thick copper products.
The above is the relevant knowledge of the copper thickness of the PCB board provided by Ucreate, I hope it will help you.
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