ODP: DIL package disappearing? (was: CA3046 replacement)

[Roman Sowa]

Desoldering caps or resistors:
with two soldering irons when precision needed, or heat one side of
component and quickly jump to its other side. If required jump few
times more. Works for me.

Desoldering ICs (up to 20-pin SOICs):
it takes about 4 seconds per side using 80 Watt transformer soldering gun.
No special tip needed. Start from one adge, give it a nice heat and slowly
move through all pins. May need to do it few times. All the time pull the
IC.
Then go to the second side of IC. Little messy technique, but works for me.

More elegant IC desoldering:
Get 0.3mm transformer wire, and put it under IC pins at one side. Secure
one end of the wire (solder somewhere). Heat first IC pin and pull the wire,
so it will go between pcb pad and the pin. Pin is then rised a little, and
solder wiped out. Repeat that with every pin, and then do it for the other
side.
This technique is also usefull for PQFP packages.

hope this helps
Roman

> -----Oryginalna wiadomość-----
> Od:	Martin Czech [SMTP:martin.czech at INTERMETALL.DE]
> Wysłano:	7 lipca 1999 07:50
> Do:	synth-diy at mailhost.bpa.nl; Roman.Sowa at WizjaTV.pl
> Temat:	Re: ODP: DIL package disappearing? (was: CA3046 replacement)
> 
> :::For me DIL (can I say DIP?) can die! They are only space wasters.
> :::I use DILs only when there's no SOIC available ;-)
> :::SMD boards look so cute, and are small.
> 
> Yes, and should you grab a bad part, it is also good fun to desolder ;->
> Sorry for the ironic answer , just couldn't supress.  I know that every
> now and then a chip is/becomes bad. Especially when poking arround in
> test circuits. And so I always use good sockets. SMD means: no sockets
> (there are sockets, but they have severe problems). This is the bad
> thing about SMD.
> 
> m.c.
> 
> ----------------------------------------------------------------------
> m.c. (alias mad scientist): 3 CDs a 72 min., Elektronic Music info, 
> synth do it yourself info, Synth-Diy Mailing List Archive (Grey Pages) 
> all @ http://www.geocities.com/SoHo/Museum/4459/index.html, enjoy!