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Salvaging Parts

Foxkoun

Dec 17, 2014
15
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Dec 17, 2014
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So this comes as I look at things lying around the house, I have an old card with some super small LED's. From what I understand it's possible to damage LED's with head, so how would I work around this? I would assume a fine tip solder iron, but those connections are really, really hugging the LED itself.
Beyond that I've found some extra bits from random dollar store trinkets.
 

Gryd3

Jun 25, 2014
4,098
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Jun 25, 2014
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4,098
So this comes as I look at things lying around the house, I have an old card with some super small LED's. From what I understand it's possible to damage LED's with head, so how would I work around this? I would assume a fine tip solder iron, but those connections are really, really hugging the LED itself.
Beyond that I've found some extra bits from random dollar store trinkets.
Almost all electrical components are rated to sustain heat for a given amount of time.
This is a requirement to be able to solder the parts to the board.
As long as you are not using excessive heat, or holding the iron on the components for an excessive amount of time, you will be fine.
Surface mount components can be fairly difficult to work with... you will need some desoldering equipment. (Solder braid, or solder pump/sucker)
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
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One good reason to salvage components is to improve your desoldering skills. The aim is to remove parts in working order leaving an undamaged board rather than for reuse of those components
 

shrtrnd

Jan 15, 2010
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I'm old-school, but when I desolder, I attach a 'heat sink' to the lead of the device I'm desoldering.
They're just metal clips that will absorb much of the heat the device might be subjected to during desoldering.
You can buy heat sink kits (that offer several different sizes), use an old hemostat that I see plenty of at electronic swap meets or at flea market sales, or even an alligator clip if you have one laying around.
 

garublador

Oct 14, 2014
111
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Oct 14, 2014
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111
What size are the LED's? At my job we do a fair amount of PCB rework and most of the components are SMT. I don't know of anyone here who has even a decent success rate of desoldering small, surface mount LED's without destroying them. They separate way too easy. It's just not worth the work to try to salvage them when they're so cheap to replace.
 

Foxkoun

Dec 17, 2014
15
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Dec 17, 2014
Messages
15
they're small, I'd say a little larger than the end of a sharp pencil. As for why I'd salvage, yes to working on skill, but also as I'm limited on budget. I learned the hard way that radioshack is not the way to go for components.
 
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