ESR values for 6.3v caps

[tbs]

Hello,

Looking at the ESR chart that comes with the "Blue ESR Meter", the Cap voltage stops at 10v.
Approximately what should the ESR Ohms be for 6.3v caps? See alot of these from 1000uf to 3300uf on PC motherboards.

Thanks for any help
Steve

[Scenic]

Re: ESR values for 6.3v caps

best would be to look up the datasheets for the capacitors in question.

fairly easy to find it they're good brand ones..
example google searches:

rubycon mbz filetype:pdf (second result)
nippon kzj filetype:pdf (first 2 results)
etc. ...

adding "filetype:pdf" to any google search only gives results directly linking to .pdf files.

[trom]

Re: ESR values for 6.3v caps

My first post (so please be gentle)

The background : I'm familiar with the badcap issue for set-top boxes and have fixed several, but this is the first motherboard problem I've noticed (there could have been others !)

I have an EVB ESR meter and, just like tbs, low voltage high value caps are off my chart. So, as Scenic suggested, I now have Rubycon MBZ datasheet...

I interpolate a 6.3V 1000μF having around 30mΩ is considered good.

The problem : Old PC glitched a couple of times which looked like power loss, now won't even boot to BIOS. DFI CA64 motherboard with G-LUXON (dark green, gold band) large value caps - some shows signs of bulging, two brown deposit.

The issue : Stripped out board and took readings of both those looking bad and good. Same answer for each and every 6.3V 1000μF = 0.02Ω.

Now I'm just confused. Whenever I've done this before, it's obvious which ones are bad because visual inspection is confirmed by readings 10 to 100 times over norm.

Trom