PCB assembly china electrostatic protection design

The direct electrostatic discharge of pcba assembly on the circuit often causes damage to the circuit, and the discharge of adjacent objects through capacitance or inductance coupling can affect the stability of the circuit operation.

PCB assembly china protection methods:

1. Establish a complete shielding structure, with a grounded metal shielding shell that can release discharge current to ground.

2. Grounding the metal shell can limit the increase in shell potential, causing discharge between the internal circuit and the shell.

When connecting the internal circuit to the metal casing, a single point grounding should be used to prevent discharge current from flowing through the internal circuit.

4. Add protective devices at the cable entrance.

5. Add a protective ring at the entrance of the printing board (connected to the grounding terminal).

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