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August 2011

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Subject:
QFN with solder slug
From:
Mark Larson <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Mark Larson <[log in to unmask]>
Date:
Wed, 31 Aug 2011 14:52:10 -0500
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I am curious how others are handling these parts for soldering. Do you leave the thermal vias in the slug covered or uncovered with solder mask? Do you fill with anything? What size hole on a 62 mil board? Tie to all GND planes or just the back side? Thermal relief the via or bury it in the plane?

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