This is a late response but...

You should have a look at application note 00-08-01 on the www.synqor.com
web site.
It is about "Thermal & Reliability Study on High Curretn Thermal Vias &
Output Pins" and may be of help.

Jean-Luc Lehmann




                    "<Darrel
                    Therriault>"         To:     [log in to unmask]
                    Sent by:             cc:
                    TechNet              Subject:     [TN] Thermal Relief
                    <[log in to unmask]
                    ORG>


                    05.06.01
                    22:57
                    Please
                    respond to
                    "TechNet
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                    Forum.";
                    Please
                    respond to
                    darrelt





TechNet,


Is there a standard calculation or geometry for creating a thermal relief
on a plane/pth connection?  This is for power pins on a connector and


to enable it to be desoldered more easily, having a thermal relief was
suggested.


Tks......DT

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