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Old 12-12-2008, 04:27 PM #1
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Default matching specifications of electrical components

I am trying to fix an over-voltage protection circuit. The parts that I think are blow are a few MOVs, Thermistor, fusing resistor, capacitors, and a surge protector.

I have a list of parts with a short description of specs, these are proprietary parts and numbers, so punching them into digikey doesn’t help much.

If you can identify any comparable part I would really (Really) appreciate your help. The red items are the most critical!

VARISTOR,910,+-10%,1.0MA (number on package 1399)

SURGE PROTECTOR,1500V,+-20%

RES,WW,3.5K,+-5%,5W,20PPM (number on package: BEI FP69 3W 909K)


RES,CERM,909K,+-1%,2W,100PPM

CAP,POLYES,0.01UF,+-10%,1000V

CAP,CER,5.6PF,+-0.25PF,1500V,C0H

I know a lot of you know quite a bit about electrical components, and I really need your help finding them. If I were to order them from the place I got the parts list it would cost more $85!


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Old 12-12-2008, 04:36 PM #2
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Default Re: Need help matching specifications on electrica

Im not very good at choosing varistors as there are too many specifications. im not sure which specs are the most critical and which ones can slide a little.

This is why i am having troubble with the information i have:

VARISTOR,910,+-10%,1.0MA (number on package 1399)

Current-Surge = 1.0MA
Energy = 910???
Manufacturer = ????
Maximum AC Volts = ???
Maximum DC Volts = ???
Package = through hole

Is there any tricks to determine the missing variables?
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Old 12-13-2008, 03:46 AM #3
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Default Re: matching specifications of electrical componen

Nevermind, i found everyting i needed!
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