1. Blog>
  2. What types of PCB static protection of electronic components

What types of PCB static protection of electronic components

by: Jan 15,2014 914 Views 0 Comments Posted in Engineering Technical

PCB protection PCB board PCB static protection

Optimization design of wiring relying only on the PCB board to improve the PCB protection ability is very limited, in order to ensure the whole system has better PCB protection ability, external PCB protection devices is essential. The actual choice of protection according to the specific needs of different schemes of PCB. PCB protection device typical mainly in the following categories:

(1) the resistive and capacitive components. Through the volume element in each signal line access resistance, can play PCB a shielding effect. The peak current of series resistance can inhibit the moment, peak voltage shunt capacitor grounding can limit moment.

(2) clamp diode. Through two diodes can be positive, negative polarity between the transient voltage clamp in a certain range, coupled with the series resistance provides power loads, so as to play a positive and negative polarity PCB protection.

(3) zener diode. Although the zener diode is not specifically designed for PCB application, but its performance determines that it has certain positive and negative polarity PCB protective effect. It is the shortcomings of. The N node is small, so can't withstand the peak current, larger in addition, it produces the large parasitic capacitance, may affect the normal operation of the circuit.

(4) the transient voltage suppressor. Transient voltage suppressor is also called TVS, is a solid-state Diode Designed for PCB protection. The biggest characteristics of TVS pipe is a short response time, the leakage current is very small, is the ideal protection device.

(5) the gas discharge tube (GDT). Gas discharge tube with a gas-tight glass or ceramic as a shell. Such as the stable gas pipe filled with neon or argon, in order to maintain the state of insulation. The advantages of the gas discharge tube is insulation resistance, capacitance is very small, can recover by itself, but the drawback is that the response rate and life expectancy are not ideal, and electrical properties will change with time and gradually decay.

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
0 / 10000
    Back to top