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4Industry News

What are the reasons for using electroplating technology for line to board connectors?


Why to use electroplating for wire to board connector? Because the contact of connector requires high electrical performance, the gold plating process in electroplating has a very obvious effect on the connector. In recent years, the connector technology is more and more developed, and the volume of the connector has also developed to be more and more miniaturized. In addition to the gold plating process of selective plating for some connectors, the barrel plating and vibration plating technology are basically used for other pin hole parts.

The quality problems of hole gold plating technology are becoming increasingly prominent. Some users have strict requirements on the quality of gold plating layer and the appearance quality of gold plating layer. Therefore, in order to ensure the quality of gold plating process, the following will explain some common quality problems affecting the gold plating layer.

First, the color of the gold plating layer is abnormal and the gold plating solution is aged;

The color of gold plating layer after using gold plating process for connector is inconsistent with that of normal gold plating layer, or the color of gold plating layer of components in a set of products is different. If the gold plating solution is used for a long time and there are too many impurities accumulated in the gold plating solution, the color of the gold plating layer will be abnormal.

wire to board connector

Second, the influence of impurities in gold-plated raw materials and excessive current density;

Because when adding the chemical materials of the gold plating bath, if the impurities brought in exceed the specifications and standards of the gold plating solution, the brightness and color of the gold plating layer will be quickly affected. If it is organic impurities, it will also affect the phenomenon that the gold plating layer is blooming and dark. If the current is too large when using gold plating, or because the total area calculation error of aqueduct parts causes its value to be larger than the actual surface area, it will cause some gold plating parts to crystallize rough and the gold plating layer will turn red.

Thirdly, the alloy content has changed in hard gold plating industry;

Because when the content of nickel and cobalt in the plating solution changes, the color of the gold-plated coating will change. If the content of nickel in the gold plating solution is too high, the metal color will become lighter, if the cobalt content in the gold plating solution is too high, the color of the gold layer will turn red. In order to improve the hardness and hardness of gold plated connectors, gold alloy plating is usually used.