Immersion Gold, White Tin, OSP, Immersion Silver... anything but HASL. :)
What can his assembly house tolerate?

Bill Brooks, CID


-----Original Message-----
From: Carlr Ray [mailto:[log in to unmask]]
Sent: Monday, June 09, 2003 3:32 PM
To: [log in to unmask]
Subject: [TN] LCC HASL and Immersion Silver

Hello All,
 Got a question for you guys....

I have a customer who has a product in design review. We provided
feedback with the following concerns. My question is what would you guys
recommend for an alternative surface finish if the customer does not
change parts?

1. PCB has 3 FPBGAs, 1.0 mm pitch (64 ball count) 12mm x 14mm package
2. PCB has 1 LCC, .5mm pitch (28 pins) 10mm x 10mm package
3. PCB has 4 QFPs, <.5mm pitch (28 - 204 pin count)
4. PCB has HASL finish

We have recommended changing the LCC to a BGA or QFP device and
changing the finish to Immersion Silver.

Carl Ray
Sr. Manufacturing Engineer
Huntsville, AL 35807
Phone: 256-882-4800 ext. 8845
Cell: 256-990-1990

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