Help identify Varistor

Where we discuss new analog design ideas for Pro Audio and modern spins on vintage ones.
Post Reply
Posts: 2
Joined: Wed Nov 02, 2016 10:13 am

Help identify Varistor

Post by lukebarber » Mon Feb 06, 2017 3:05 pm

I'm trying to understand how some old equipment from ABB is working. I have schematics for the circuit boards, but it do not contains any information about the parts. Can you please help me identify these varistors? The photo is attached.

This is off of an OLD VFD. ... Drives.pdf
Tyristors.jpg (274.45 KiB) Viewed 1554 times

User avatar
Posts: 2797
Joined: Sat Aug 11, 2007 2:34 pm
Location: Oak Cliff, Texas

Re: Help identify Varistor

Post by mediatechnology » Mon Feb 06, 2017 3:09 pm

Those are Panasonic parts.
7 mm K=10%
I think the "431" in the part number is 43 X 10V or 430V.

Have a look here: ... D431K.html
Read Damore v. Google and ask yourself the following questions:
Are Googlers really the people you want in charge of your search results, browser, data or operating system?
Would you be comfortable riding in a Google self-driving car knowing that Googlers might want you dead just because they don't like you?
Would you trust a Googler with your children?

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 7 guests