[hpsdr] LTC2208 Thermal Pad

Ahti Aintila oh2rz.sdr at gmail.com
Wed Jan 14 23:46:44 PST 2009


Hi All,

To fill or not to fill? The thermal vias in my Mercury board seem to
be less than half full.

I took some microscope photos with focus on the surface of the thermal
pad and the bottom of the vias.
The focusing difference varied from via to via, variations from 1 mm
to 1.6 mm. See the photos:
http://kotisivu.dnainternet.net/ahti/oh2rz/Bottom.jpg
http://kotisivu.dnainternet.net/ahti/oh2rz/Surface.jpg

73, Ahti OH2RZ

 1232005604.0


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