How much do you know about copper foil of PCB?
2021-03-20
Copper foil: a kind of negative electrolytic material. It is a thin, continuous metal foil deposited on the base layer of circuit board. It serves as the conductor of PCB. It is easy to bond to the insulating layer, accept the printing protective layer, and form the circuit pattern after corrosion. Copper mirror test: a kind of flux corrosion test, using a vacuum precipitation film on the glass plate.
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