What is Edge Bevel in PCB?

Edge beveling is the process of making a transitional edge between two faces of a PCB usually performed on the outer edge of the PCB. Bevelling is commonly used on edge connectors to allow for smoother insertion into another circuit board socket. The edge connection pins are often called gold fingers because they are plated in gold, and there are several of them grouped together in parallel. 

Edge Connector Plating. For gold fingers, we at Hopetimepcb have the options listed below:

 • Available beveling angle: 20, 30, 45 and 60 degrees

• Residual thickness after beveling: >=0.3mm (0.2mm is okay, but ask for an estimate)

You can calculate the depth or residual thickness of the bevelling using the geometry shown below in Figure 1.

Figure 1: Edge Bevelling of Gold Finger Profile View

Where d is depth, a is the bevel angle, t is board thickness, and tr is residual thickness.

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