In order to solve the above problems of gold-plated boards, PCB circuit boards using immersion gold has the following characteristics:?
1, because the crystal structure formed by the gold-immersed and gold-plated is not the same, the gold-immersed will be more yellow than gold-plated yellow, customers are more satisfied.
2, because of the crystal structure of immersed gold and gold plating is not the same, immersed gold is easier to weld than gold plating, will not cause poor welding, causing customer complaints.
3, because the immersed gold plate only pads on the nickel gold, skin effect in the transmission of the signal is in the copper layer will not have an impact on the signal.?
4, because the immersed gold is more dense than gold-plated crystal structure, not easy to produce oxidation.
5, because of the immersed gold plate only pads on the nickel gold, so will not be produced into the gold wire caused by the micro-shortening.
6, because of the immersed gold plate only pads on the nickel gold, so the line of solder resistors and the copper layer of the combination of more solid.
7, works in making compensation will not have an impact on the pitch.?
8, because of the immersed gold and gold plating formed by the crystal structure is not the same, its immersed gold plate stress is easier to control, for the products with the bonding, more conducive to the bonding process. At the same time also because of the immersed gold is softer than gold-plated, so the immersed gold plate to do the gold finger is not wear-resistant.?
9, PCB circuit board immersed gold plate flatness and pending life as good as gold-plated.?
So most factories are currently using the immersion gold process to produce gold plates. But the immersion gold process is more expensive than the gold-plating process (higher gold content), so there are still a large number of low-priced products using the gold-plating process (such as remote control boards, toy boards).