madbeanpedals::forum

Projects => General Questions => Topic started by: menamestom on February 24, 2011, 10:52:38 PM

Title: Quick cap question
Post by: menamestom on February 24, 2011, 10:52:38 PM

I have a load of capacitors I've ordered and some WIMA ones have µ1k250 on them, what value are they?

By process of elimination I'm hoping they are 100n / 0.1µ but I can't think how that would end up as µ1k250.
They are the orange square ones.  I'm presuming the 250 is voltage rating and µ1k is the value....
Title: Re: Quick cap question
Post by: jkokura on February 24, 2011, 11:00:27 PM
It could be. U1 could be the value, k could be the tolerance, and 250 the voltage rating.

Jacob
Title: Re: Quick cap question
Post by: madbean on February 24, 2011, 11:11:50 PM
Do you know what series they are? There will be a datasheet that explains exactly what the numbering means.

I'm think 1n and k tolerance, which is either 5 or 10%.
Title: Re: Quick cap question
Post by: CRBMoA on February 24, 2011, 11:27:48 PM
Actually, with the µ in front of the digit, that could be consistent with 0.1µ.

I bought this  (http://www.sparkfun.com/products/9485)so I never have to guess again. Best $10.00 I EVER spent as a builder.

Mine came from a different wholesaler, but it is identical.

I use it daily.
Title: Re: Quick cap question
Post by: jkokura on February 24, 2011, 11:40:08 PM
Group buy anyone?

Jacob
Title: Re: Quick cap question
Post by: gtr2 on February 25, 2011, 12:10:46 AM
I just built the one from Chris's previous post last year, I think it was seed studios or something where I got it.  I had it sitting unfinished for a couple months and built it the other day.  Easy build, works great.

Thanks Chris!
Title: Re: Quick cap question
Post by: bigmufffuzzwizz on February 25, 2011, 05:06:17 AM
that seems useful! i have to say my multimeter capacitance meter doesn't like to read anything in the pf range but this kit reads 1 pf - 500 uf!!! thats awesome!! for 14 dollars :D
Title: Re: Quick cap question
Post by: menamestom on February 25, 2011, 01:57:34 PM

That kit looks great, only problem would be if you needed it to read the caps in the kit!

I've checked on the WIMA website and can't find anything.  I'll drop them a line.

I do wonder why this has to be so hard when they could just write the value on the side.....
Title: Re: Quick cap question
Post by: bigmufffuzzwizz on February 25, 2011, 03:48:35 PM
its not too bad. You'll get used to it after awhile. A conversion chart helps a lot in the beginning. or get this!!! ---->http://cgi.ebay.com/VC99-3-6-7-Auto-range-digital-multimeter-bag-/290531843784?pt=LH_DefaultDomain_0&hash=item43a50c1ec8

This is what i use. For $30 bucks you can't go wrong and if you wanna bid on one you might get it cheaper. My next step is an old school one that shows leakage as well!!