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Identifying a varistor
Posted: Wed Feb 14, 2018 3:24 pm
by Rich4349
I've had some of these varistors burn out in an electronic device, and the replacements I'm finding online come in about eight different choices. How do I select the right value?
Re: Identifying a varistor
Posted: Wed Feb 14, 2018 4:11 pm
by Grant Bunter
Contact the manufacturer of the electronics?.
The value will be in the schematic...
Re: Identifying a varistor
Posted: Wed Feb 14, 2018 4:15 pm
by Bill Fitzmaurice
The lettering and numbers identify it's values. Somewhere there's a chart to use for comparison.
Re: Identifying a varistor
Posted: Wed Feb 14, 2018 9:10 pm
by Rich4349
I finally found the faint, tiny lettering on the BACK. Up till then I was trying to work solely off of the part number on the front. The very friendly assistant Electronics professor at the local Community College was invaluable in helping me. She hooked it up to various oscilloscopes and multimeters and figured out the values.
Came up with this:
https://www.digikey.com/products/en?key ... 95-4286-ND
Re: Identifying a varistor
Posted: Thu Feb 15, 2018 1:44 am
by Tom Smit
Oh man! That's going to cost you 63 cents per unit!!!
Re: Identifying a varistor
Posted: Thu Feb 15, 2018 6:54 am
by Rich4349
I know, right? At least I don't have to buy 10,000 units this time, or wait 2 months for production time.
I'll just sell a t60 to cover the cost.
