Damaged Electronic components

[tennythomas]

Hi,

Please give me a list of electronic components which can be damaged in the storeroom (before soldering)?

Thanks in advance.

 

[Prototyp_V1.0]

Hi.

What's the big deal with the room of yours. Is it heat, cold, salt?
I know salty environoment would get components to rust over time. But I think it's quite random what components that fails first.

 

[keith1200rs]

Solderability is affected with time even in a clean atmosphere I think.

Keith

 

[sghosh]

What you all people use to remove oxidized leads (say you have lots of parts buy in bulk 5 years ago and now need to use some of them, but oxidized leads not letting you solder)

Any chemical to remove oxidized leads?

Sanding/filing oxidized leads not always possible, for example, SMD components - what you use then?

 

[Tahmid]

What I do is, I get a cutter knife.
One of these:

Then I remove the oxide layer with the cutter knife.

Hope this helps.
Tahmid.

 

[keith1200rs]

You can get PCB cleaners such as this EraserCleanerBlock but I am not sure if they would be suitable vor SMD legs. You can also get liquid/aerosol cleaners such as Ambersil6130 but again, I am not sure if they would be suitable for components.

Keith

 

[Nick C.]

A rubber eraser often works to clean up the leads, and a slightly aggressive flux (I like Kester 186)
sure does help when soldering older parts. It's a pain to clean the residue after soldering, however.

I try to keep my stored parts as dry as possible, in sealed moisture-barrier bags with lots of dessicant inside.

 

[asimkumar]

i have seen one datasheet (section:humidity sensitivity and soldering)of a opamp suggested to heat the ic at about 80 deg C before soldering.
**broken link removed**