It should not be an issue unless the assembly is operated at high temp. than
normally (>100 C).
                                  jk

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Steve Gregory
Sent: Wednesday, November 24, 2004 12:10 PM
To: [log in to unmask]
Subject: [TN] Samtec PCS2 Socket issue...


Hi All!

First of all, I would like to wish everybody a safe and happy  Thanksgiving!

I have an issue that I would like to bounce off of you all. We're building
an assembly that uses some Samtec "Power Combo Sockets", here's the *.PDF
link
to it:

_http://www.samtec.com/ftppub/pdf/PCS2.PDF_
(http://www.samtec.com/ftppub/pdf/PCS2.PDF)

Due to the design of assembly, we had to hand solder these in. The hole
diameter in the board for the power pins of these sockets are .072", Samtec
recommends .058".

We experienced some sockets that had solder flowing up into the power pin
contacts to the point that prevented full insertion of the mating header,
so we
removed the solder to allow full insertion using a solder extractor.

The contacts for the power pins are Tin plated as you can see  from Samtec's
drawing, so there really is no contamination from the solder  as there would
be with gold plated contacts which the signal pins are plated  with

Now we're being told that our rework was unacceptable, and that the  sockets
need to be replaced...I don't see what we did affects the performance of
the
socket in any way.

If the mating header can be fully inserted, then electrical contact should
be fine in my opinion. If anything, I feel that the electrical contact may
have
 been improved slightly due to the tighter fit between the header pin and
the
 socket contact...it surely isn't degraded.

Am I out in left field about this?

I really appreciate any feedback!

-Steve Gregory-

---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------

---------------------------------------------------
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 847-615-7100 ext.2815
-----------------------------------------------------