Author Topic: Poly film cap voltage ratings  (Read 806 times)

mandrewbot3k

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Poly film cap voltage ratings
« on: November 26, 2012, 06:36:18 PM »
So I have these...
http://www.ebay.com/itm/New-100-Pcs-x-0-047uF-47nF-630V-47000pF-5-Mylar-Film-Radial-Capacitor-2J473-J-/190658059029?pt=LH_DefaultDomain_0&hash=item2c641b1b15

I'm planning on an +18V fatpants/egodriver dual build but I have a hard time believing these are 630V rated. Is that right?

Also, are the 25V rated electrolytics enough for 18V? or should I jump up to the 50V ones?
Andrew

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Scruffie

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Re: Poly film cap voltage ratings
« Reply #1 on: November 26, 2012, 07:07:40 PM »
Even if they're not 630V, mylars are usually 50-100V rating so you should be fine with them.
Although that may be a stock photo and the parts you receive are far larger in size (in fact I can see it is, those are 100nF in the photo) as it seems unlikely they'd put the wrong rating on them.

25V electrolytics will be fine for an 18V supply.
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mandrewbot3k

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Re: Poly film cap voltage ratings
« Reply #2 on: November 26, 2012, 09:45:31 PM »
Thanks for the reply. I don't know if that's the same seller. I just remember buying them from China on ebay, probably the same kind. I can't remember what my ratings were so I looked up a bunch on there and they were all pretty similar. For some reason I think it may be 63.0V. If I need more electrolytics, I'll probably order some 50Vs but otherwise I'll just use what I have. Thanks again! (probably shouldve posted this in general or the 'beginner' forum, but oh well)
Andrew

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