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Subject: Re: [Homebrew_PCBs] QFN32 breakout adapter

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-10-23

On Mon, 23 Oct 2006 22:37:44 +0200, leon_heller
<leon.heller@...> wrote:

> The hardest part of the assembly was getting the pads lined up
> properly so that I could tack down two opposite corners. Once that was
> done I applied plenty of gel flux to each row of pads and drag
> soldered them, a row at a time, using a 1/64" conical bit cartridge
> with my Metcal system. I haven't got any bridges and the joints look
> OK. I used a stereo dissecting microscope (X20 magnification).
> Leon


Why don't you use paste and hot air? Works a treat, and gets the thermal
pad too if there is one.

I don't think an iron is a good choice to solder leadless components, but
it's good to know it would work, in a pinch.


ST