Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I've just made a breakout adapter PCB for a QFN32 device - the ADI
AD8333 Dual I/Q Demodulator and Phase Shifter. Making the PCB was
quite straightforward, although the pads are quite small and 0.5 mm pitch.

I've posted a pic of the assembled unit in my (Leon's) photos folder.

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