Joe,
Although it is repellant to my nature, I will pass on all the good/bad puns
I could make with your dead bug question. It really depends on your
requirements to your customer and the end use environment. If you have a
documented standard rework/repair procedure that has a demonstrated
capability, I see no reason why it would not be acceptable.
Dave Hillman gave an excellent paper on their testing of different rework
scenarios and the resultant reliabilities achieved. Dead bugs were included.
I'm not sure where they got all the dead bugs, but there was a rumor about
ODing on latent Diet Coke and Mountain Dew spills.
Dewey

-----Original Message-----
From: Kane, Joseph E [mailto:[log in to unmask]]
Sent: Friday, June 18, 2004 7:27 AM
To: [log in to unmask]
Subject: [TN] Dead Bugs


We've talked before about implementing design changes with "dead
bug" components, where you turn the part upside down, bond
it to the board surface, and solder wires to the pins.

Of course, this takes more labor, but sometimes it's useful to
implement a change for a short time while artwork is being updated.

Now we have a customer talking about disallowing this practice for
production.  Anyone have a good reason why dead bugs should be
outlawed?  Are there any specs that prohibit this?

Joe Kane
BAE SYSTEMS Controls
Johnson City, NY

---------------------------------------------------
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
-----------------------------------------------------

---------------------------------------------------
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
-----------------------------------------------------