There are several characteristics that determine your choice of plating method. Here are four important aspects that you need to consider:
Solderability
As flash gold PCBs include some non-precious metal elements, this makes it more difficult to make them solderable. ENIG is therefore a better choice for sensitive joints such as thermostatic bonding or wire bonding.
Appearance
Flash gold is a good alternative to plated PCBs. This is because of its appearance. In applications where nice gold contacts are required, flash gold plating is recommended.
Corrosion resistance
When choosing a gold plating method for your PCB, you need to consider the corrosion resistance of the plating. ENIG gold plating is known to have a high level of corrosion resistance, making it a better choice.
Contact resistance
Hard gold plating has a high contact resistance. Therefore, soft gold plating like ENIG is a better choice for high temperature applications. This is due to the increased formation of compounds such as oxides.
Abrasion resistance
When it comes to wear resistance, flash gold is a good choice. This method of gold plating is very suitable for applications where repeated sliding wear is required.
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Post time: Apr-25-2023