Hi Tom,

No you aren't the only one. What I usually do is take the solder sample PCB
that I get from the lot and then will use dummy components placed over the
surface of the PCB to simulate as best I can the thermal mass that will be
on the board, for the bottom terminated stuff I will tape the thermocouple
down so that the tip is in the center of the footprint and then place a
similar sized dummy over top of it and then run the profile. While I know
there are the purists out there that say you must drill holes and embed the
thermocouple precisely at the junction where the solder joint will form,
and I would agree, only if I had the luxury of a complete sample board for
my profile development, but the fact of the matter is that I never do. So I
have to make do with what I have, and for the most part I will get
acceptable results using my method.

Steve

On Thu, Feb 4, 2016 at 3:49 PM, Tom Gervascio <[log in to unmask]>
wrote:

> Many times we have to create an oven profile but only have a bare board.
> Many times the boards are complex and have many bottom terminated
> components on them and wanted to avoid having to guestimate how a profile
> for a bare board would actually perform on a populated board. Can't imagine
> that we are the only persons to face this problem. Wondered how other users
> have worked around this problem?
>


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