To those who commented my mail about red P in tantalum cap bodies. We have cross sectioned a number of caps from two well known tantalyte manufacturers. The plastic they use is quite different from the hazardous one that X made (250 tons)with sporadic red P in. The dangerous plastic was used for IC packages only, so no red P problem with tantalum caps, at least not those that we use.

So, this topic is finished from my side. Exploded tantalytes has another root cause, which we penetrate further. Maybe humidity, as some of you mentioned.

Ingemar Hernefjord
Ericsson Microwave Systems


-----Original Message-----
From: Ingemar Hernefjord (KC/EMW)
Sent: den 29 oktober 2003 10:35
To: 'TechNet E-Mail Forum.'
Subject: Phosphorous in epoxy molds



Nikkei, CALCE and others warned for red P particles in IC plastic packages. Could cause migration between terminals and electrical failures.This was last year. Didn't seem to be a major problem to most users. Anyone who knows if such P 'doped' molds were used by tantalum cap makers too?

Ingemar Hernefjord
Ericsson Microwave Systems

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------