3 Dec
2009
3 Dec
'09
1:20 p.m.
On 3 Dec 2009 at 12:38, geoffrey oltmans wrote:
I used to routinely replace 100 pin QFPs here at work
with a wide
chisel tip soldering iron (about 1/4" long tip). Removing them safely
is much harder without a hot air soldering station, but the soldering
itself is relatively easy.
Removing even fine-pitch QFPs is easy with Chip Quik or a similar
home made fusible alloy. Leaves the pads on the PCB in place and the
IC itself reusable. I've even used this to remove J-lead components
such as PLCCs that I want to socket (e.g. Flash PROMs) with success.
As mentioned, resoldering is easy using a sucker or even braid to
clean up any excess.
--Chuck