1. Blog>
  2. What is Gold Finger?

What is Gold Finger?

by: Sep 30,2021 1332 Views 0 Comments Posted in Technology

What is Gold Finger?

PCB Gold Fingers refer to a row of gold-plated strips at the edge of a PCB, which are commonly used to connect different electronic devices and transmit digital signals, especially in computers for peripheral cards of expansion slots , such as PCI, PCI Express, and AGP cards. 

Gold Fingers are normally coated with a layer of gold through an electroplating process. Because gold is extremely resistant to oxidation, it can protect the internal circuit from corrosion; Moreover, its conductivity is also very good, so there is basically no signal loss based on it. At the same time, gold has very strong ductility, the contact area between the contacts can be made larger under proper pressure, thereby improving the signal transmission efficiency. 

Why it’s called Gold Finger?

Look at the golden yellow conductive contacts: the surface is gold-plated and the conductive contacts are arranged just like fingers. Alright, you may not think so, but that’s indeed the reason why. Weird but interesting.

Join us
Wanna be a dedicated PCBWay writer? We definately look forward to having you with us.
  • Comments(0)
You can only upload 1 files in total. Each file cannot exceed 2MB. Supports JPG, JPEG, GIF, PNG, BMP
    View More
    Back to top