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Gold Finger PCB

Gold Finger PCB

Gold finger PCB provide reliable connectivity between peripheral devices and motherboards. These connections are crucial in the computer industry. Gold fingers are also used extensively in computerized industrial machinery.

Ensure the internal PCB layers do not contain copper to prevent exposure during beveling. The inner layers should also be clear of solder mask and screen printing.


If you want to produce high-quality PCB gold finger connectors, it’s essential that you follow certain standards. These include: thickness, surface finishing, and chemical composition. The beveling of the contacts is also important, as it makes it easier for the contacts to snap into place when inserted into the slot.

The beveled edges of the PCB gold fingers must be precisely oriented to ensure that they fit into the corresponding slots with the right angles. Moreover, the edges should be copper-free to avoid any contact with air during the beveling process. Also, the PCB gold finger must not make contact with the solder mask or silk screen printing.

In order to ensure that the connections on a PCB are accurate, the gold fingers should be plated at a thickness of 2 to 5 microns. Moreover, the gold should be enhanced with cobalt to increase its rigidity.

Besides the normal gold-finger thickness, some PCBs require the gold-fingers to be shorter than Gold finger PCB others. This is usually the case with memory card readers and other water-resistant electronics. In addition, the length of a PCB’s gold fingers must match that of the devices linked to them. This prevents the device linked to the longest gold-fingers from receiving power before those connected to shorter ones. The shorter gold-fingers are typically positioned at the end of the board.


Gold finger PCBs are important for connecting devices to one another. They are a vital part of many popular products such as mobile phones, tablet computers, and TV adaptor cards. These PCBs are essentially connectors that connect external devices to the motherboard. Gold fingers provide a strong and durable connection between the two devices, which is why they are so critical to modern technology.

Unlike the copper contacts found in many electronic devices, gold is a better choice for these connections because of its improved conductivity and durability. It is also much easier to remove and insert the gold finger without damaging it. PCB manufacturers must adhere to strict standards when manufacturing Gold finger PCBs. This includes the thickness of the plating, which should be between 2 and 50 microinches. They should also be beveled at an angle of 30 degrees to ease the insertion process. Moreover, they must be spaced correctly to avoid contact with through holes and plated hole locations.

PCB gold fingers are a rectangular row of conductive pads along the edge of a printed circuit board. These pads are often referred to as “fingers.” They are commonly used on computer memory sticks and graphics cards. In addition, they are an essential component in computer motherboards and external connectors like sound and video cards. There are several different types of PCB gold fingers. Some are uniform, while others have segmented fingers that have unequal lengths.


PCB gold fingers play a vital role in allowing a computer to connect to peripherals such as extra RAM space or graphics cards. They also transfer signals between the motherboard and the devices they are attached to. This is why it is important that these connections be durable and capable of withstanding frequent disconnections.

To ensure that these connections are robust, the thickness of PCB gold Gold Finger PCB Supplier fingers should be between 2 and 5 microinches. The plating on the edges should also be between 5 and 10% cobalt, which gives them maximum rigidity. This is necessary because PCBs are constantly inserted, unplugged, and reinserted.

The beveling of PCB gold fingers is a process that turns the sharp, square edges into slope forms. This makes insertions easier and faster. Moreover, it increases the strength of the connection by preventing the gold from wearing down over time. It is also a requirement for many of the more rigorous tests that are used to evaluate the quality of PCBs.

Several different standards have been developed for the beveling of PCBs, including IPC (Institute of Printed Circuits) specifications. These are freely available and adhered to by all professional electronic assembly solutions. The beveling of a PCB’s gold fingers is essential for the quality of the finished product, and it is recommended that all manufacturers follow these guidelines.

Chemical composition

PCB Gold Fingers are gold-plated connectors located on the edges of a printed circuit board. They are shaped like fingers and serve as a connection point between the main PCB and other devices, such as the computer’s motherboard. They help transfer data and commands between the two, ensuring that they are properly received. They are made from hard gold, also known as Electroless Nickel Immersion Gold (ENIG). This alloy is plated on copper contacts to prevent oxidation and improve solderability.

During the manufacturing process, it is important to follow strict standards. This is to ensure that the Gold Fingers fit in properly and do not interfere with other components of the PCB. There are several tests that can be conducted to verify this, including a visual test and a tape test. These tests check that the finger contact edges are smooth, clean, and free from excess plating.

The Gold finger PCB is a key part of modern-day technology, as it connects peripheral devices to the primary processing motherboard. In addition, it allows for expansion of the computer by adding sound cards, graphics cards, and extra RAM space. Without this technology, computers would not be able to operate at the level of speed and resourcefulness that they do today. Moreover, it is the Gold-plated PCBs that enable smartphones and tablets to be connected to the internet.