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April 2006

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Subject:
From:
Werner Engelmaier <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 11 Apr 2006 11:49:28 EDT
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Hi Steve,
Happy to hear you have a new vapor phase machine. While I do not have any
words of wisdom on this machine. generally speaking, make sure the thermal
capacity of the machine matches or exceeds the thermal load that you will be putting
through.
Vapor phase is certainly the best way to keep the maximum temperature to
which PCBs and components are exposed during LF-soldering to a minimum. While
people have primarily focused on SJ reliability issues, I think the bigger threat
to reliability with LF-solders comes from PCBs and components because of the
exposure to about 260C with anything other than vapor phase.

Werner

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