News

Classification and characteristics of PCB board gold finger core board

2019-09-03 15:57:24 451

The so-called circuit board gold finger refers to a row of equidistant square pads, exposed copper plated. It is mostly used for connecting electrical connectors of boards, LCDs, motherboards, cabinets, etc., because a thin layer of gold is plated on the copper-plated copper layer.

 

1, PCB board gold finger core board definition and role:


Goldfinger: (GoldFinger or EdgeConnector) insert one end of the PCB circuit board into the connector card slot, and use the connector pin of the connector as the outlet for the external connection of the circuit board, so that the pad or the copper skin contacts the pin of the corresponding position. To achieve the purpose of conduction, and plated this pad or copper on the PCB board, because it is a finger shape, it is called a gold finger. The reason why gold is chosen is because of its superior conductivity and oxidation resistance. Wear resistance However, because the cost of gold is extremely high, it is only applied to local gold plating such as gold fingers.


PCB circuit board gold finger recognition method


2circuit board gold finger core board classification and identification features

 

Gold finger classification of the board:

 

1. Regular gold finger (flush finger);

 

2. Segmented gold fingers (intermittent gold fingers);

 

3. Long and short gold fingers (ie uneven gold fingers).


Long and short gold finger circuit board

 

1. Regular gold finger (flush finger): Rectangled pads of the same length and width are arranged neatly at the edge of the board. The following picture shows: physical objects such as network cards and video cards, and more gold fingers. Some small plates have fewer gold fingers. ;

 

2. Segmented gold finger (intermittent gold finger): a rectangular pad with different lengths at the edge of the board, and the front section is broken;

 

3. Long and short gold fingers (ie, uneven gold fingers): rectangular pads with different lengths at the edge of the board.


PCB circuit board gold finger recognition method


Features: no character frame and label, the conventional solder mask opening window. Most of the shape has a groove. The gold finger part protrudes from the edge of the board, or near the edge of the board. Some boards have gold fingers at both ends. Normal gold finger on both sides Yes, some PCB circuit boards have only one-sided gold fingers. Some circuit boards have a wide single finger and a wide root.


Juding Circuit Technology is a PCB supplier from China. We have our own PCB manufacturing factory, PCB surface mount factory, parts supply chain, and PCB design department to provide you with one-stop PCB service. Welcome to consult the staff for more details!