Uncover the secrets behind one-way TVs and two-way TVs tubes?

　　TVs Tube devices can be divided into unipolar and bipolar by polarity, i.e. unidirectional TVs and two-way TVs tubes.

One-way TVs tube protection devices can only protect positive or negative pulses, while the bidirectional TVs tube protection device is connected to a protected line, one end of the ground, whether from the reverse or from the positive ESD pulse is released, more effectively protect the IC.

The forward characteristic of unidirectional TVs is the same as that of ordinary zener diodes, and the hard breakdown of the "right angle" at the reverse breakdown inflection point is typical PN junction avalanche. When there is an instantaneous overvoltage pulse, the current of the device increases and the reverse voltage rises to the clamping voltage and remains at this level.

The v-i characteristic curve of two-way TVs tube is like two unidirectional TVs "back-to-back" combination, its positive and negative two directions have the same avalanche breakdown characteristics and clamping characteristics, the symmetrical relationship between the positive and negative breakdown voltage is 0.9≤VBR (positive)/VBR (≤1.1). Once the interference voltage at its ends exceeds the clamping voltage, the VC will be suppressed immediately.

DC protection generally choose one-way TVs, AC protection generally choose two-way TVs, multi-channel protection Select TVs array devices, high-power protection Select TVs dedicated protection module.

　　

Uncover the secrets behind one-way TVs and two-way TVs tubes?