WTB Capacitor

[MikeHof]

I'm looking for a capacitor to replace a bad one in my mobo. Radio Shack & all the local stores don't have the size i need. Hopefully someone here has one laying around.

6.3v
1800uf


Mike

[debennett2]

why not just shop for one at digikey.com?

[MikeHof]

I've looked at sites like those but I'm not too hip on paying around $10 for one capacitor. Figured I'd see if anyone had one laying around.

[Bovon]

Those motherboard capacitors are not regular..off the shelf types. They are specially constructed and low equivalent series resistance (ESR). The reason is, they must deal with the high frequency our motherboards operate at today. Stick a normal off the shelf cap in it and you may have problem (and may not)..but if you do, you will be fighting a ghost and can't prove it.

Also, its standard procedure to replace all of those caps..maybe only one is shorted right now..but they all came from the same defective source.

They are 10 mm in diameter and 25 mm in length...very difficult to locate.

http://www.spectrum.ieee.org/WEBONLY...eb03/ncap.html

[John Prophet]

you dont HAVE to get the EXACT uf rating on these type of capacitors...these are "filter" capacitors so the cicruit has some leeway.....just get 2200uf..they should be fairly common.

[Prexaspes]

If possible, you could put two capacitors of different value together in series to make two larger value capacitors operate as one lower value capacitor. Connecting two caps in series has the same effect as seperating the plate distance. In fact, total capacitance of a series capacitive circuit is smaller than the smallest capacitance capacitor. For example, two 3600 microfarad capacitors in series would have a total capacitance of 1800 microfarads.

[MikeHof]

Few hours too late as I broke down & ordered a couple online. I asked all the local shops if the 2200 would work but they said they didn't recommend using them as it was a motherboard. Oh well. Maybe come in handy to know this in the future though I hope not.

[DSummer]

Both 2200uf and 1500uf will work fine, you should only concern on the sizes and quality (low ESR preferred) instead...