Jack & All,
This discussion takes me back quite a few years to 1990 when the
MIL-STD-2000 Revision A was taking shape --> Mel & Jim may be able to add
some additional insight into these past discussions.  The use of compliant
pins was just beginning to be used in backplanes and motherboards in an
attempt to move away from wire wrap and soldering of connector pins (the use
of solder preforms and vapor phase soldering yielded the best outcome but
touch-up was still required).
The consensus of the DOD/Industry SOLD Project Participants was to permit
the use of compliant pins per MIL-STD-2166 and connectors per MIL-C-28859
inserted in PTHs of boards designed to MIL-STD-2219 and fabricated to
MIL-A-28870 without soldering.
I know of several avionics boxes (designed in the early 90's) that are
currently flying in US Navy F/A-18E/F aircraft utilizing the above
connectors and pins without any adverse effects.
One thing for the J-STD-001 and IPC-A-610 committees may be to look at these
connector, pins and board documents.
Just my $.02.

Steve Sauer
Mfg Engineer
Northrop Grumman, Xetron

-----Original Message-----
From: Jack Crawford [mailto:[log in to unmask]]
Sent: Monday, October 28, 2002 12:35 PM
To: [log in to unmask]
Subject: [TN] when is a press-fit pin not a press-fit pin


More good discussion; comments about what criteria applies to what kind of
pins. These discussions (and sometimes litigation) occur when people apply
the "I know what I mean" approach without assuring that the other person
also applies the same meaning. I look forward to those of you concerned with
the criteria in 610 offering terminology clarification and expansion
comments for the committee to consider for the next revision.

Cordially
jack

---------------------------------------------------
Technet Mail List provided as a free 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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------