TECHNET Archives

April 2008

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 15 Apr 2008 16:20:27 EDT
Content-Type:
text/plain
Parts/Attachments:
text/plain (34 lines)
The levels were not set arbitrarily. They were set on basis of ionic  
residues causing vesiccation & subsequent failure of military assemblies in high
humidity environments (Vietnam). Specifically, ionic residues from RMA fluxes on
conformally coated assemblies- most often radios. (See Navy report
MRR-3-72).
Mechanization of the original manual ionic testing method led to the
different nbrs used for the various automated test instruments, as published in Navy
report MRR-3-78. I wrote a column for SMT magazine on this issue; if you'd
like a copy of the column, email me separately at [log in to unmask]
(mailto:[log in to unmask]) as it would be stripped off if I tried to email it to
TechNet as an attachment.

Bill Kenyon
Global Centre Consulting
3336 Birmingham Drive
Fort Collins, CO 80526
Tel: 970.207.9586 Cell: 970.980.6373




**************It's Tax Time! Get tips, forms and advice on AOL Money &
Finance. (http://money.aol.com/tax?NCID=aolcmp00300000002850)

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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 847-615-7100 ext.2815
-----------------------------------------------------

ATOM RSS1 RSS2