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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