Re: How hot can the 486-50 cpu run ?

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Article #7022

#7022

From: Tony stewart
Date: Tue, 01 Sep 1992 03:52

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riepe@ifwm11.ifw.uni-hannover.de (Michael Riepe) writes:

> I'm sorry but you're talking nonsense.
> Silicon semiconductors have max. chip temperatures of about 75 to 125 deg C.
> I may be wrong, but I think the maximum for the 486-33 is 85 deg C. The case
> temperature depends on the case type (ceramics or plastics) but will always
> be lower, approximately 40 to 60 deg C.
> 
> Anyway, in PC-486's sold today, the max. temperature will be exceeded in most
> cases unless you are using an additional cooling fan *near* the CPU and/or
> an ICECAP or s/t like that.
> 
> -- 
>  Michael Riepe                         <riepe@ifwm11.ifw.uni-hannover.de>
> 
>      IIII  FFFFFFFF  WWWW           WWWW             Univerit"at Hannover
>     IIII  FFFF       WWWW   WWW   WWWW    Institut f"ur Fertigungstechnik
>    IIII  FFFFFFF     WWWW WWWWW WWWW       und spanende Werkzeugmaschinen
>   IIII  FFFF         WWWWWW WWWWWW                   Schlosswender Str. 5
>  IIII  FFFF          WWWW   WWWW              W-3000 Hannover 1 (Germany)
> --

Also reliability of silicon drops by 2 for every 10 degree C increase...
So  keep your silicon no more than 20'C above ambient(25C) if you want
a reliable device.

dino@inqmind.bison.mb.ca
The Inquiring Mind BBS, Winnipeg, Manitoba  204 488-1607

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From: dino@inqmind.bison.mb.ca (Tony stewart)
Newsgroups: sci.electronics
Subject: Re: How hot can the 486-50 cpu run ?
Message-ID: <cyLeqB2w165w@inqmind.bison.mb.ca>
Date: Mon, 31 Aug 92 22:52:35 CDT
References: <1992Aug28.035445.6441@newsserver.rrzn.uni-hannover.de>
Organization: The Inquiring Mind BBS  1 204 488-1607
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