Press fit connectors take more force to press into Immersion Silver when
compared to SnPb. If I take an average value, not worrying about the exact
finished hole size, if I obtained 8lb./pin on SnPb, I might get 13-14lb./pin
on immersion silver on the 2mm family - Z Pack. Also, you probably do not
want to use a pneumatic press to press these in, if the hole size is on the
lower end. You could end up with rolled connectors. Manual Arbor might prove
to be a challenge, if a full connector - 25 column, 7 row and above needs to
be pressed in....
Going to the highest specified drill size possible and specifying a nominal
size of one mil higher and 2 mil tolerance also helps.
Typically an electric press overcomes the issues of the other two kinds.
Also, you can program the speed to suit the geometry and style of the pin.
Regards,
Lakshmi
-----Original Message-----
From: Gebhard.Neifer [mailto:[log in to unmask]]
Sent: Wednesday, June 09, 2004 10:33 AM
To: [log in to unmask]
Subject: [TN] AW: [TN] Immersion Silver finish and press-fit connectors
http://www.tycoelectronics.com/environment/leadfree/pdf/leadfree_press-in_cu
stomer_report.pdf
Gebhard
_______________________________
Delphi Deutschland GmbH
Body & Security Electronics
Manufacturing Engineering Design
Albert Einstein Straße 5
D-51674 Wiehl-Bomig
Tel.: +49 (0)2261-971-880
Fax: +49 (0)2261-972-880
Mobile: +49 (0)151-18223504
E-mail: [log in to unmask]
-----Ursprüngliche Nachricht-----
Von: TechNet [mailto:[log in to unmask]] Im Auftrag von Craig Cullum
Gesendet: Mittwoch, 9. Juni 2004 15:27
An: [log in to unmask]
Betreff: [TN] Immersion Silver finish and press-fit connectors
Hello all,
We are considering switching from HASL to Immersion Silver finsih on our
PCBs.
How would this impact the 2mm press-fit connectors?
Anyone willing to share their experiences?
Thank you in advance.
Regards,
Craig
Craig Cullum, Engineering Technologist, AMTELCO
e: [log in to unmask]
[log in to unmask]
f: 608 838 8367
v: 608 838 4194, or 4197, x128
Visit AMTELCO at www.amtelco.com
---------------------------------------------------
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
-----------------------------------------------------
****************************************************************************
************
Note: The information contained in this message may be privileged and
confidential and thus protected from disclosure. If the reader of this
message is not the intended recipient, or an employee or agent responsible
for delivering this message to the intended recipient, you are hereby
notified that any dissemination, distribution or copying of this
communication is strictly prohibited. If you have received this
communication in error, please notify us immediately by replying to the
message and deleting it from your computer. Thank you.
***************************************************************************
---------------------------------------------------
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
-----------------------------------------------------
|
