In actual circuit protection applications, how should high-power TVS diodes and low-power TVS diodes be used according to environmental needs? How different are they? Next, let's take a look at the circuit protection device - Youfeng Microelectronics. A full supply of dry goods has been launched:

1) Working principle: Zener diode principle; There are differences between the two PN junctions. The high-power TVS diode has a large heat sink, while the low-power TVS tube does not;

2) Junction capacitance: the junction capacitance of high-power TVS diode can reach hundreds of pF; Small power junction capacitance can be less than 0.3pF;

3) Power size: 8/20us waveform for small power TVS diode performance test; 10/700us waveform is used for the performance test of high-power TVS diode, and its power is 7-10 times of that of low-power TVS diode;

4) Response speed: small power TVS diode response speed ps level; High power TVS diode generally has a speed of<1ns or 5ns;

5) Package size: high-power TVS diode is generally packaged with SMA, SMB, SMC, etc., with large size;

As for small power TVS diode, it is mostly packaged with SOD and DFN, and its size is small;

6) Purpose: high-power TVS diode is mainly used in power feeder; Small power TVS diode is mainly used in high-density installation;