Electronics > Beginners
Identifying a capacitor
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LaptopGTR:
Hi All. Please see attached image. I’m trying to correctly identify this capacitor. And wondering where I can buy this part. It’s from furnace ignition circuit. Any help appreciated :popcorn:
wraper:
0.68uF 400V
LaptopGTR:
 :popcorn: Thank you for the reply. May i know what type of capacitor.(I know its a bi-polar cap) also where to buy them. can not find anywhere online.

thank you in advance
wraper:
Some sort of film capacitor. Most likely does not matter much which type of film capacitor you choose as replacement for this. But using polypropylene would be the safest as long as size fits, they are larger for the same ratings than most of other types.
floobydust:
Measure the lead spacings, they come in standard sizes i.e. 15mm, 22.5mm, 27.5mm etc. you want what fits on your pc board. The same part usually comes enclosed in a plastic box.
0.68uF 400V polypropylene, you could look at EPCOS B32653, Wima MKP1, Kemet R75 series parts.
Just look at Mouser for film capacitors and sort by size/voltage.
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