[time-nuts] Re: Z3801A Temperature

[Bob kb8tq]

Hi

The implicit assumption on pretty much all telecom gear these days 
is moving air. How much moving air? You would have to get into the 
spec for the OEM that bought it. It might be listed there, it could easily 
have been in somebodies notes from a phone conversation …..

As long as the case temperature in your stack does not get much above
50C, the device should be happy. MTBF wise, the hotter it gets, the 
quicker it fails … sorry about that. 

Bob

> On Jul 19, 2021, at 8:29 AM, Hal Murray <halmurray+timenuts at sonic.net> wrote:
> 
> 
> I have one sitting on a shelf.  No air-conditioning.  The top plate is warm, 
> far from hot.
> 
> Will they be happy if I stack another one on top of it?
> 
> The users guide says 50C.  What does that mean if they don't specify the air 
> flow?  Is there an assumption that it is floating with lots of empty space 
> around it or something similar?
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
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