TVSs and other clamping devices

  • Last Post 15 July 2020
cd_sharp posted this 26 May 2020

Hey, guys

I need to ask a question to those of you more knowledgeable in electronics. I'm looking at this TVS family datasheet. What are those numbers? Clamping voltages, but what does 10/1000 uS and 8/20 uS time periods mean in this context?

Thank you!

"It's just the knowledge of the coils and how they interact with each other" (Steven Mark)

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Chris posted this 26 May 2020

Hey CD,

The info you seek is in the datasheet:


  • @10μs the TVS is 100%, Ipp, conducting.
  • @1000μs the TVS is 50% Ipp

Hope this is what your'e looking for?

Best wishes, stay safe and well,


cd_sharp posted this 26 May 2020

Yes, I think so. Thanks, man!

"It's just the knowledge of the coils and how they interact with each other" (Steven Mark)

Jagau posted this 26 May 2020


 a note from Vishay

The breakdown voltage is the voltage at which the device goes into avalanche breakdown, and is measured at a specified current on the datasheet. The clamping voltage appears across the TVS at the specified peak pulse current rating

Full explanation in included pdf


Attached Files

cd_sharp posted this 15 July 2020

Hey, guys

Long time of silence. I've been trying several unidirectional TVSs as a replacement for the classical diodes. I could not see any notable difference in how the circuits behave. This was something that puzzled me for quite some time.

Today I remembered this and I did a quick lookup. I found this document (also in the attachment ).

The unidirectional TVS must be used similarly to the Zener diode. It needs to be reversed. That is the explanation for the fact that I could not see any difference from a classical diode.

Maybe some of you know this stuff already, but for me it is something new.

"It's just the knowledge of the coils and how they interact with each other" (Steven Mark)

Attached Files

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