I've got a couple of IP cams where the same cap failed. It's a 15 uF, 100v radial cap spec'd to 105c. But I'm having fits trying to find a replacement where they don't rape me on shipping. Can I shop for something with slightly different specs? i.e. is 100v just an upper limit beyond which the cap will fail... and I could replace it with a 200v or 300v cap? What about uF? Do I use a 20 or 30 uF at my own risk? -- Pete Cresswell

Depends a bit on failure mode. same cap, same location? probably being overstressed either with voltage, which isn't likely because designers understand voltage, but overstressed with excessivae AC ripple current, since most designers don't understand that stuff and simply spec for high temp, like 105C --> you see the thought process here? Therefore *IF* you replace go for same or more uF, same or more voltage [tilt towards more voltage], and definitely LOWEST Resr you can find. ...my opinion only, without looking deeper.

Small Capacitors: What Numbers Critical?

Apr 07, 2014 22 Replies

Rate this thread:

(

(PeteCresswell) 12 years ago

Per Arfa Daily:

Ok, that cuts it. Forget about DigiKey. I'm in this way waaaaay over my head.

Just trash these things and buy two more.

Pete Cresswell

Vote

Baron 12 years ago

snipped-for-privacy@gmail.com scribbled thus:

Did anyone notice that the picture location was displayed on Google Maps !!!

Best Regards: Baron.

Vote

Jeff Liebermann 12 years ago

You can fix it with a pair of pliers. The yellow/brown goo becomes conductive after it's been baked for a while. I haven't found a good solvent that softens it yet, that also doesn't destroy components, solder mask, or the PCB. My guess(tm) is that the yellow goo is shorting out something on the PCB under the goo. Do whatever it takes to remove the stuff and see if the camera recovers.

If you break the capacitor, I think you can afford these: $3.19 plus $1.00 shipping.

Tossing repairable devices should be a capital crime.

Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required