Advice on Desoldering an IC

[Rob Jarratt]

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 <cz at alembic.crystel.com> 
Sent: 15 April 2022 18:51
To: rob at jarratt.me.uk; Rob Jarratt <robert.jarratt at ntlworld.com>; General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>; Rob Jarratt via cctalk <cctalk at 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 at classiccmp.org <mailto:cctalk at 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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