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October 2001

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Subject:
From:
Kathy Kuhlow <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 11 Oct 2001 14:37:49 -0500
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I would think that ,dependent on the thermal ramp rate and the temperautre spike at the entrance into the solder pot, you could damage a cap if one lead enters first or if both leads enter the same way and the part/PCB hasn't ramped up properly or the thermal rate of change isn't even across the part. Do you have a profiler that you could attach a thermalcouple wire to and chart what the part is seeing during the wave process?

Kathy 



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META content="MSHTML 5.00.2919.6307" name=GENERATOR></HEAD> <BODY style="FONT: 10pt Abadi MT Condensed Light; MARGIN-LEFT: 2px; MARGIN-TOP: 2px"> <DIV>I would think that ,dependent on the thermal ramp rate and the temperautre spike at the entrance into the solder pot, you could damage a cap if one lead enters first or if both leads enter the same way and the part/PCB hasn't ramped up properly or the thermal rate of change isn't even across the part. Do you have a profiler that you could attach a thermalcouple wire to and chart what the part is seeing during the wave process?</DIV> <DIV>&nbsp;</DIV> <DIV>Kathy </DIV></BODY></HTML>

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