You should put a large thermal pad without solder stop, connected with
lotsa vias.
I use this package a lot, and it is fairly easy to hand-solder with
hot air. If you only have an iron, that works too. solder the thermal
pad from the far side through the PCB.
ST
On Wed, Jul 29, 2009 at 6:43 AM, David Griffith<dgriffi@...> wrote:
>
> Does anyone here have any pointers on making a board with a QFN packaged
> device and then hand soldering it? I'm pondering doing something like
> putting a lot of relatively large vias underneath to made a connection
> with the thermal pad on the bottom. At first I thought that I might get
> away with using heat sink grease, but it looks like that thermal pad is
> the only connection for Vss.
>
> --
> David Griffith
> dgriffi@...
>
> A: Because it fouls the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
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>
>