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Hard Gold Plated PCB
Gold Plating PCB can be divided into hard gold and soft gold. Hard Gold Plated PCBs are designed to withstand mechanical stress and frequent friction, making them ideal for edge contacts or 'gold fingers' on printed circuit boards. The hard gold plating,
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Gold Plating PCB can be divided into hard gold and soft gold.
Hard gold is an alloy, and its hardness is relatively high, making it suitable for use in areas that require frequent mechanical stress or friction. It is primarily used for products that need to be frequently plugged and unplugged, commonly applied to the edge contacts of PCBs,which commonly referred to as "gold fingers".
On the other hand, soft gold is typically used for applications like bonding aluminum wire on COB (Chip On Board), or for the contact surfaces of mobile phone buttons. Recently, it has been widely used on both sides of BGA substrates. The difference between hard gold and soft gold lies in the composition of the final gold layer. During gold plating, either pure gold or an alloy can be chosen. Since pure gold is softer, it is referred to as "soft gold."
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