What is a gold finger？

PCB gold fingers refer to metal contact points on a pcb, typically located at the edges of the board. They are usually made of metallic materials such as gold, gold-plated, or gold alloys. PCB gold fingers have the following characteristics,

• Have good conductivity and can effectively transmit signals and currents.
• Have good corrosion resistance and can resist oxidation and corrosion.
• Have good mechanical strength and can withstand insertion, removal, and pressure.

The function of PCB gold finger

PCB gold fingers play an important role in electronic products. Firstly, they are used to connect circuit boards and other electronic components such as sockets, connectors, and chips. Reliable electrical connection can be made with the circuit board through the connecting components of the golden fingers. Secondly, PCB gold fingers are used for transmitting signals and currents. They serve as input/output interfaces for circuit boards, capable of transmitting signals and currents from electronic components to the circuit board, or from the circuit board to other electronic components.

The production process of PCB gold finger

The production process of PCB gold fingers mainly includes electroplating and anti-corrosion treatment. Firstly, a layer of metal material such as gold plating or gold alloy is coated on the edge of the circuit board through electroplating process. This can increase the conductivity and corrosion resistance of gold fingers. Secondly, in order to prevent oxidation and corrosion of the golden fingers, anti-corrosion treatment is required. Common anti-corrosion treatment methods include coating a protective layer and using preservatives.

Application Fields of PCB Gold Finger

PCB gold fingers are widely used in various electronic devices. Firstly, they are widely used in the field of mobile phones. The SIM card slot and battery connector of mobile phones are usually connected using PCB gold fingers. Secondly, PCB gold fingers are also widely used in the computer field. For example, memory slots and expansion card slots are typically connected using PCB gold fingers. In addition, PCB gold fingers are also applied in the field of automotive electronics. The dashboard, audio system, and navigation system of a car all require PCB gold fingers for connection.