Keywords: Plating Gold PCB, Gold Finger PCB

Gold Finger PCB is a tight segment of rectangular PCB cushions that for association are hard gold plated on the edge of a PCB. For memory sticks, designs cards, and so on. PCB gold finger is a typical PCB producing necessity.

The following is the Course of hard gold plating to PCB gold fingers :

Stage 1. Cover blue paste

The remainder of the PCB surface is covered with blue paste aside from the PCB gold finger cushions that require hard gold plating. Also, with the heading of the board, we make the conductive position steady.

Stage 2. On PCB copper surface cushions there is evacuation of oxidation layer

In washing away the oxidation layer on the Plating Gold PCB, we utilize sulfuric corrosive and afterward it uses water to clean the copper surface. Then, at that point, to additional clean the PCB cushions surface we grind it. Then, to clean the copper surface we use water and afterward deionized water.

Stage 3. Electroplating of nickel on PCB cushions copper surface

On the cleaned gold finger cushions surface we power on to electroplate a nickel layer. Then, we utilize water and afterward deionized water to clean the nickel-plated cushions surface.

Stage 4. Electroplating of gold on nickel-plated PCB cushions

On the nickel-plated PCB cushions surface we power on to electroplate a gold layer. What's more, the rest gold left is reused. Then, at that point, to clean the gold finger surface we actually use water and deionized water.

Stage 5. Evacuation of the blue paste

Presently, to the PCB gold fingers hard gold plating is finished. Also, to the patch veil printing step we eliminate the blue paste and PCB produce.

In three kinds the grouping of PCB gold fingers is finished:

Lopsided PCB gold fingers - the PCB cushions have equivalent width however shifts long, and now and again it varies in spaces.

Divided PCB gold fingers - the PCB cushions have various lengths, and there is division in the gold fingers.

Ordinary PCB gold fingers - It is the most considered normal Gold Finger PCB with a level and even cluster. The PCB cushions have a similar space, length and width.