Faced with the various PCB circuit boards on the market, there are two ways to distinguish the quality of PCB circuit boards;
In electronic products, gold is widely used in contact because of its good electrical conductivity, such as key boards, gold
One, the definition of PCB PCB (Printed Circuit Board), Chinese means printed circuit board, or printed circuit board. It
4, chemical nickel palladium gold Compared with immersion gold, chemical nickel palladium gold has an extra layer of palla
There are many pcb surface treatment processes, the common ones are hot air leveling, organic coating, electroless nickel/imm
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