VOGONS


First post, by Brawndo

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I'm getting ready to order some new capacitors to re-cap MS-5169 and P5A SS7 motherboards, and I am not quite sure exactly which caps I need to purchase. I got all the specs off the caps on the MSI board to filter on the Mouser and Digikey websites, and I have it pretty narrowed down, but there are some other differences I'm not quite sure how to choose. Example, the caps on this board appear to be mostly Sanyo WG(M) and HK(M), and here's the specs from one type:

1500µF 10v WG(M) -40+105C

Searching on Digikey, I have this one narrowed down to 2 options, the top 2 in this filtered search:
https://www.digikey.com/en/products/filter/al … sctScKazpmcW6gA

They appear to be identical except for a few specs, in particular the ripple current @ low/high frequency and impedance, so I don't know which to choose.

caps.png

Is it safe to go with the part with the higher ripple current values and lower impedance if I'm unable to determine the exact specs of the existing caps? The only other difference is a 2mm height difference, so I measured the caps on the motherboard now and they are 25mm in height, so in that case should I choose the first part which is the same height?

Reply 1 of 2, by majestyk

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A Sanyo WG 1500µF 10V has 19mOhm ESR and a max. ripple current of 2A.
So you clearly should go with the second (Nichicon) one in the list.

I would always prefer Rubycon ZL when available:
https://www.digikey.com/en/products/detail/ru … FC10X23/3563852

Why do the Sanyo caps need replacement?

Reply 2 of 2, by Brawndo

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majestyk wrote on 2022-08-05, 06:03:
A Sanyo WG 1500µF 10V has 19mOhm ESR and a max. ripple current of 2A. So you clearly should go with the second (Nichicon) one in […]
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A Sanyo WG 1500µF 10V has 19mOhm ESR and a max. ripple current of 2A.
So you clearly should go with the second (Nichicon) one in the list.

I would always prefer Rubycon ZL when available:
https://www.digikey.com/en/products/detail/ru … FC10X23/3563852

Why do the Sanyo caps need replacement?

Half of them are bulging on top, so I'm just planning on a complete re-cap. It's cheap insurance anyway to protect longevity of the board. The board works fine regardless.

I've always heard Nichicon and Panasonic caps are very good so that's why I've been looking at those, but I'll check out Rubycon as well.

Do you have or did you find a data sheet for the Sanyo caps? I haven't been able to find one.