Hi Joe,
I cannot address tin whiskers, but I can tell you that we are getting many
lead-free SMT packages these days.
Chip resistors, Chip capacitors, SOICs, SOTs, and PLCCs are all coming with
100% tin as the qualified lead-free formulation from the factories we deal
with.
QFP packages have been available in several finishes as the factories try to
decide which finishes they want to offer.
100% tin is one of the finishes I have seen on QFPs, though Sn/Cu is more
common so far.
I hope that this information is of some value.
Sincerely,
Debbie Goodwin
Account Representative
10867 Portal Dr
Los Alamitos, CA 90720
Phone = (714) 252-0010
Fax = (714) 252-0026
[log in to unmask]
PLEASE NOTE - Over 90% of all SMT packages are now available Lead-Free!!!
__________________________________________________
This message is intended for the use of the individual entity to which it is
addressed and may contain information that is privileged, confidential and
exempt from disclosure under applicable law. If the reader of this message
is not the intended recipient, or the employee or agent responsible for
delivering the 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 calling
714.252.0010 or returning the original message to us. Thank You.
-----Original Message-----
From: Macko, Joe @ IEC [mailto:[log in to unmask]]
Sent: Tuesday, March 25, 2003 2:49 PM
To: [log in to unmask]
Subject: [TN] component lead plating/tinning
Fellow Technets,
As the industry moves towards lead-free solder, I am getting a lot of
internal questions regarding the phenomena of tin whiskers and the types of
plating/tinning used on component leads. There is a general concern that
100% tin plated leads may lead to the formation of tin whiskers after board
assembly. I am not that familiar with the phenomena of whisker formation
or the industry standard(s) for plating of component leads but have read
articles that imply that industry is moving towards 100% tin plating on
component leads so they are compatible with leaded and non-leaded solders.
Who can enlighten me on this as well as the formation of tin whiskers? many
thanks in advance.
joe
---------------------------------------------------
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
-----------------------------------------------------
---------------------------------------------------
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
-----------------------------------------------------
|
