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Old 10-14-2010, 11:13 AM   #1
deckart
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Default ZLH Vs MCZ.

Hi all,I've got quite a few iMac G5's to repair and am waiting delivery from here of a few hundred 1800 6.3 MCZ's for them,in the meantime I had enough Rubycon ZLH's to repair a couple of boards,they've been running for a couple of days fine,I checked the specs of both and the ZLH ripple is 1800 ish to the MCZ's 2300 ish,the rest of the specs are near identical except the ZLH has a 10000 hr life @ 105degrees celcius.
Does anyone use these caps and will I have problems later on?,client isn't in a rush to have these back,so it would be little hassle to recap once Chris's delivery arrives.
Much appreciated.
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Old 10-14-2010, 02:48 PM   #2
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Default Re: ZLH Vs MCZ.

ZLH are not as low ESR as MCZ.
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Old 10-14-2010, 03:10 PM   #3
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Default Re: ZLH Vs MCZ.

The Ripple spec basically tells you how much Ripple the cap can handle without over-heating internally.

When you go with a cap with a lower ripple spec than original all bets are off in so far as longevity.

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Old 10-14-2010, 03:41 PM   #4
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Default Re: ZLH Vs MCZ.

Hmmm,what I thought,looks like 48 caps are consigned to the bin!.Thanks for the heads up.
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Old 10-14-2010, 04:05 PM   #5
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Default Re: ZLH Vs MCZ.

ZLH are good caps in the proper applications. It's not like they are guaranteed to died young either. The original caps may have been over-spec'ed and ZLH are fine. But there is no way to know for sure. That's why I said the bets are off.
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Old 10-14-2010, 05:04 PM   #6
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Default Re: ZLH Vs MCZ.

I agree,a bit between a rock and a hard place,me,to keep clients happy and myself,I'll wait for my MCZ's from here and sleep a little better!.
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Old 11-23-2010, 02:08 PM   #7
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Default Re: ZLH Vs MCZ.

I have ASUS TR-DLS server boards which have ZLH in the VRM. The ZLH is rated for long lifespan, not low ESR. Servers are used 24/7 so maube that's why they specified ZLH.
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Old 11-23-2010, 02:56 PM   #8
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Default Re: ZLH Vs MCZ.

Quote:
Originally Posted by bigbeark View Post
I have ASUS TR-DLS server boards which have ZLH in the VRM. The ZLH is rated for long lifespan, not low ESR. Servers are used 24/7 so maube that's why they specified ZLH.
That's a Pentium III board, no? Pentium IIIs don't need as low ESR in the VRM when compared to newer CPUs.
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Old 11-23-2010, 03:09 PM   #9
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Default Re: ZLH Vs MCZ.

Quote:
Originally Posted by deckart View Post
Hmmm,what I thought,looks like 48 caps are consigned to the bin!.Thanks for the heads up.
what?! did you really just throw away 48 caps ?
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Old 11-23-2010, 04:19 PM   #10
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Default Re: ZLH Vs MCZ.

Quote:
Originally Posted by bigbeark View Post
I have ASUS TR-DLS server boards which have ZLH in the VRM. The ZLH is rated for long lifespan, not low ESR. Servers are used 24/7 so maube that's why they specified ZLH.
HD, ZL, WX, KZE are all typical caps to see in a P-III VRM.

ZLH have a bit lower ESR than that group.
It's a proper application for ZLH and ZLH are better than minimum.

You should have a warm fuzzy about ZLH on a P-III board.
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