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Transient-voltage-suppression diode

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Rahul Soni

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Can anyone please explain what is maximum reverse standoff voltage?
Is it the voltage upto which the TVS will be invisible to circuit?
Can you please provide any good application note for using TVS diodes.
Thanks in advance :)
 

ravindragudi

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Yes, thats correct. Max reverse stand off voltage will specify the operating voltage of your application circuit. If the signal/ power line where the TVS is present is going to go beyond this spec, then the TVS will breakdown and start conducting.

Here are some links which gives you good information about TVS and their applications.
https://www.littelfuse.com/~/media/electronics/product_catalogs/littelfuse_tvs_diode_catalog.pdf.pdf (refer first 9 pages)
https://www.littelfuse.com/~/media/...vs_diodes/littelfuse_tvs_application_note.pdf
https://www.onsemi.com/pub_link/Collateral/AND8230-D.PDF
https://www.infineon.com/dgdl/AN140.pdf?fileId=db3a304317a748360118089324954410
https://www.analog.com/media/en/technical-documentation/application-notes/AN-1161.pdf
https://www.vishay.com/docs/88451/stacking.pdf (series stacking)
 

SunnySkyguy

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https://en.wikipedia.org/wiki/Transient-voltage-suppression_diode#Characterization

In general it is either back to back zener or single zener like avalanche diode.
But some also prefer Triac like performance

e.g.
TRANSIL / TRISIL COMPARISONElectrical characteristicsThe Transil is a clamping device which suppresses all overvoltages above the breakdown voltage (VBR)The Trisil is a crowbar device which switches on when overvoltages rise up to the breakover voltage (±VBO).

In all cases there must be some series resistance for current limiting or a fuse or driver impedance... depending on application
 

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