18 Oct
2012
18 Oct
'12
1:40 p.m.
On Oct 18, 2012, at 12:26 PM, Chuck Guzis <cclist at sydex.com> wrote:
For large TQFPs, I anchor the chip body to the PCB with a dab of clear nail polish, using
the microscope for accurate positioning. Once the polish has set, I proceed with the
corner soldering. I find that I can get extremely good registration this way. It's
not fast, but it's nearly foolproof.
That's a good tip. I usually tack the corner down with the iron, but I will try the
nail polish idea.
(I also use a dissection microscope and vacuum tweezer).
-Ryan