[time-nuts] Surface Mount OCXO Questions

[Graham / KE9H]

John:

All SMT OCXO's will either have a recommended PCB footprint in the spec 
sheet
or will refer you to a recommended footprint in another document.

Some don't care about a ground plane under the part, some require it
with no crossing signals, some require an open thermal hole underneath
the oven.  I have seen all three cases.  As usual, it is suggested that you
read the [] manual.

Best regards,
--- Graham / KE9H

==


On 10/29/2013 9:18 PM, John C. Westmoreland, P.E. wrote:
> Hello,
>
> I was wondering if I could get some recommendations on surface mount OCXO's
> vs. the traditional through hole.
>
> I was also wondering on the board layout - if you found it necessary to
> leave a thermal moat so to speak - and what worked best.  Maybe the OCXO
> has an internal air barrier that maybe would make this unnecessary - not
> sure.
>
> Your input and experience appreciated.
>
> Thanks,
> John Westmoreland
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