Ho to remove Multi Pin IC"s without special tools??

[Minion]

Hi Folks, I was wondering how you guys remove Multi pin IC"s from PCB"s without any special tools?? And without causeing the parts to heat up and be Damaged??

For me what I have been doing which isn"t allways be the best way is If I just need to components and don"t need the PCB I will use My dremmel and Cut the PCB were the Component is soldered ,I then use my dremmel to cut arround each Pin of the IC and then carefully use my Soldering iron and a Pair of Tweezers to carefully desolder each little piece of PCB material from each Pin of the IC...This is Time consumeing and doesn"t allways end in success...

Yesterday I tried desoldering Six 15 Pin TDA power amp IC"s from a curcuit board useing this method and I ended up Ruining 2 of the 6 IC"s...This method works better when there are less pins and they are spaced farther appart.....

What do you guys do to get IC"s out??


Cheers

[Mooly]

Solder braid Works first time every time with a good iron.

[Juergen Knoop]

and don't forget using additional flux!
regards

[Minion]

I actually never had much luck with Solder Braid especially with Plated through Holes...I can get the Solder arround the Hole but the stuff in the middle of the Hole is allmost impossible to get out, Pluss I have to heat the Braid and the Pad up quite a bit to get all the Solder to stick to it which sometimes ruins the IC....

Tried it lots of times but without much success....I have also tried Solder suckers but they also don"t seem to work very well...

Somefimes I will just take a Blow torch to the Back of the PCB and heat it up till the Solder melts and give the board a good whack and then many of the components will fall out but this also can damageing them from heat.....

[bwaslo]

A relatively easy way to do it is to put lots of solder on all the IC leads, forming one or two large beads. Heating these all at once (melting all the solder) frees the part.
The bad part is that the part sees lots of heat. You can buy special low temperature solder like Chip Quik (see http://www.mcmelectronics.com/product/21-3450) which removes most of the risk (if used with a reduced-temperature tip). I've had very good luck with this. It is also very fast and less stressful on board than most methods.

[Mooly]

Plated through holes are a problem. There is no easy DIY way I know of to remove I/C in one piece so it's reusable. You can remove I/C to replace part O.K. but thats about all. You need rework solder station to do what you are after, and that does not come cheap.
Keep whacking the board

[Juergen Knoop]

you can use a hypodermic needle, shove it over the pin while your heating the solder
this works fine with dil/dip devices
but regarding your experiences...you don't use flux?
also the soldering iron may be inadequate?
regards

[bwaslo]

Try the Chip Quik. You may be surprised how well it works. When it melts into the existing normal solder, it reduces the melting temperature of the normal solder, too. so plated-thrus and vias are less of a problem. Beats the daylights out of using solder wick (which probably subjects the part to more heat).

[gtforme00]

I agree with Bwaslo. I have used that method with a large percentage of success, even with regular solder. I will have to try the Chip Quik product.

Regards,
David

[TheMG]

If you can afford it, a solder station with a desoldering vacuum tool works wonders. Show those double-sided pads who's boss!

Hmmm... I think that might be considered a "special tool" though.