What are the differences between high-power TVS diode and low-power TVS diode

What are the differences between high-power TVS diode and low-power TVS diode

In practical circuit protection applications, how should high-power TVS diode and low-power TVS diode be used according to environmental needs? What is the difference between them? Next, let's take a look at the circuit protection device - Youfeng Microelectronics. A full load of dry goods has been launched:

1) Working principle: all based on the principle of Zener diodes; There are differences, as the PN junctions between the two are different. High power TVS diodes have large heat sinks, while low power TVS transistors do not;

2) Junction capacitance: high-power TVS diode junction capacitance up to hundreds of pF; Low power junction capacitance can reach below 0.3pF;

3) Power size: 8/20us waveform for performance testing of low-power TVS diodes; A 10/700us waveform is used for testing the performance of high-power TVS diodes, with a power of 7-10 times that of low-power TVS transistors;

4) Response speed: Small power TVS diode response speed ps level; High power TVS diodes generally have speeds of<1ns or 5ns;

5) Package size: high-power TVS diode are generally packaged in SMA, SMB, SMC, etc., with larger sizes;

Low power TVS diode are mostly packaged in SOD and DFN, with small dimensions;

6) Purpose: High power TVS diode are mainly used in power supply feeders; Low power TVS diode are mainly used in high-density installations.