For that matter, why do they have that plastic skin? They didn't useter
have it; it's only about 30-40 years ago when they started putting it
on. Possibly for more durable markings and better appearance, as well as
insulation. I think it should be possible to order them without it.

Brian

Ingemar Hernefjord (KC/EMW) wrote:
> Scaring scenario!
> Just what I fear. We use Vigon 200, which is an extremly good cleaner, no doubt. However, what you mention is exactly my fear. What if the cleaner agent can't be removed 100% from that space between can and plastic skin ? As the pH value is 10, such remnants and aluminium will probably not coexist without aggressions. How will the environment be on inside of that plastic after 10 years..or 20 years? Maybe many don't want to know...
>
> Ingemar Hernefjord
> Ericsson Microwave Systems
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Paul Edwards
> Sent: den 8 oktober 2004 23:53
> To: [log in to unmask]
> Subject: Re: [TN] Aluminum electrolytic Cap's
>
>
> Plenty if you are using a polar material or water...If the disk comes off,
> there is fluid getting down between the plastic cover and the Aluminum
> casing...Aluminum is both amphoteric and electropositive so if polar fluids
> are trapped there they will form a planar electrolytic cell and slowly eat
> the case.  At some point the corrosion will push the plastic away enough to
> allow fluids and moisture to collect in those locations...
>
> Paul Edwards
> Process Engineering
> [log in to unmask]
> Tel: 408-433-4700
> FAX: 408-433-9988
> Surface Art Engineering
> 81Bonaventura Dr.
> San Jose, CA 95134
> DUNS: 944740570
> CAGE/NCAGE: 1XZ48
>
> -----Original Message-----
> From: Scott Lefebvre [mailto:[log in to unmask]]
> Sent: Friday, October 08, 2004 1:43 PM
> To: [log in to unmask]
> Subject: [TN] Aluminum electrolytic Cap's
>
> We have a problem with the plastic disk coming off after being process
> through our In-Line PCB washer.  What concerns if any should I have.
>
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