If the Klein cutters are too bulky, you may care to investigate.

Lindstrom 7191 https://uk.rs-online.com/web/p/cutters/3320341 are the usu first 
resort small cutters - they should be fine enough for 0.1" pitch ICs.

A finer pair are Bondline 1570 
https://www.bondline.co.uk/product/hand-tools-and-tweezers/esd-cutters/c1570 
definitely fine enough for 0.1" IC legs (just put them to an IC), and probably 
50 mil packages.

And for a compact pair of 45 deg pin croppers Bondline C1582 
https://www.bondline.co.uk/product/hand-tools-and-tweezers/esd-cutters/c1582

HtH; BR  Martin



-----Original Message-----
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Rob Jarratt 
via cctalk
Sent: 15 April 2022 22:33
To: 'Chris Zach' <c...@alembic.crystel.com>; 'General Discussion: On-Topic and 
Off-Topic Posts' <cctalk@classiccmp.org>
Subject: RE: Advice on Desoldering an IC

I do have some diagonal cutters, but although small they seem to be still too 
bulky to reach the pins. I will have to try to find some finer ones. These seem 
to look OK: 
https://uk.farnell.com/klein-tools/d275-5/wire-cutter-diagonal-127mm/dp/2839543

 

Also, I have seen the recommendations regarding a Hakko 808. It looks like the 
modern successor is the FR301 
https://www.hakko.co.uk/product/fr-301-portable-desoldering-gun/. I think what 
may be better about this is the wider choice of nozzles.

 

Regards

 

Rob

 

From: Chris Zach <c...@alembic.crystel.com>
Sent: 15 April 2022 18:51
To: r...@jarratt.me.uk; Rob Jarratt <robert.jarr...@ntlworld.com>; General 
Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>; Rob Jarratt 
via cctalk <cctalk@classiccmp.org>
Subject: Re: Advice on Desoldering an IC

 

Cut the pins with a very sharp set of dykes then remove them one at a time. 
Then use flux and detailer braid to remove the solder

On April 15, 2022 1:49:33 PM EDT, Rob Jarratt via cctalk <cctalk@classiccmp.org 
<mailto:cctalk@classiccmp.org> > wrote:

I am trying to remove an IC from my PDP 11/24 CPU, a DS8641. I am really 
struggling to desolder it. I am using the technique of applying fresh solder 
and then removing it. But after multiple cycles of this I think I am starting 
to damage the PCB.

 

I am using a fairly cheap desoldering station (this one 
https://cpc.farnell.com/duratool/d00672/desoldering-station-uk-eu-plug/dp/SD
01384?st=duratool%20desoldering). Its spec in terms of vacuum pressure is 
equivalent to that of the professional Hakko ones though. I am also trying a 
hand desoldering pump. None of these are able to clear many of the holes of 
solder, although some are doing better than others. Nevertheless, the IC 
remains stubbornly unmoving.

 

Are there any tips for removing ICs?

 

Thanks

 

Rob

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