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July 2000

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Subject:
From:
Ryan Grant <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 10 Jul 2000 14:34:59 -0600
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text/plain (69 lines)
Besides all the things others have mentioned, watch out for what your solder
paste will do.  Some solder paste will "melt" at 28 C, and you'll get a
gooey mess at the screen printer.  Other solder pastes will work on boards
that are so hot you will burn your hands to touch them.

By the way, on some of our screen printers, the inside operating temperature
is 27 C even though the ambient air temp is 23 C.  This means there is no
room for error (i.e. a failed HVAC) with some solder pastes.

Thanks

Ryan Grant
Advanced Technology Engineer
MCMS
(208) 898-1145
[log in to unmask]


> -----Original Message-----
> From: Stephen R. Gregory [SMTP:[log in to unmask]]
> Sent: Monday, July 10, 2000 11:28 AM
> To:   [log in to unmask]
> Subject:      [TN] Manufacturing Floor Temperature...
>
> Hi ya'll!!
>
> Seeing how summer is here (boy is it ever here in the midwest!!), what is
> the
> maximum temperature you would not exceed on the floor? I know the
> J-STD-001C
> calls out that the temperature should be maintained between 18-30 C.
> (64.4-80
> F.), and the humidity should not exceed 70%. Our Philips equipment manual
> says that they should not be operated if the temperature exceeds 86 F.
> What
> about the test equipment or any other automation?
>
> -Steve Gregory-
>
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