The gold finger PCB has been classified into long and short gold fingers, fractured and split gold fingers, gold finger plates in the processing stage, and the necessity to pull gold-plated wire. While ordinary gold finger processing is reasonably straightforward, the length of the circuit board fingers needs careful control of the gold finger lead and requires a second etching to be finished.
The computer's memory stick and graphics card have the most prevalent PCB gold finger design.
The Benefits of Gold Fingers PCB
PCBAs have a special function that must be attached to motherboards while also being easily replaceable. Design the connection between the golden finger and slot to resemble that of a power plug and a socket. Gold delivers the conductive impact without oxidation and adequate conductivity despite repeated insertion and removal of gold due to its high conductivity and inertness.
Role and Definition of the Gold Finger
Gold Finger: Make copper contact with the relevant pin by inserting one end of the PCB into the connector card slot and using the connector pin as the PCB's external connection. Due to its finger-like form and plating of nickel or gold on this pad or copper plate of the PCB board to obtain the desired conductivity, it is known as the "gold finger." Because of its better conductivity and oxidation resistance, gold is preferred. However, because of its high price, gold is only utilized for local gold plating, such as in soft gold PCB.
Considering the Design of the Gold Finger PCB
To guarantee appropriate connections, first check that the gold finger's length, width, location, and card slot are perfectly aligned.
The width, height, location, and convexity of the card slot are perfectly matched, as is the failsafe KEY SLOT that was constructed on the PCB board.
If you can't immediately place a wire under the finger, you need to think about how to transmit electricity during gold finger PCB plating. A portion of the PCB requires a smaller design of individual fingers.
The beveled edge of the gold finger has the same angle and depth as the finger itself. Be careful not to shorten the finger or the beveled edge following the beveled edge.
