Gerard,
please educate me how to specify the OSP thickness:  there are different
OSPs, e.g entek is thinner than the immidizole, but perform the same
function.  Some of them are self limiting, some of them are not.  The
dissolution rate in the solder is depend upon the OSPs' formulation too.
Are you going to list based on formulation or brand name (some of the
formulation are not disclosed)?  Many thanks for your advice.
Best regards,
                              jk

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Gerard O'Brien
Sent: Friday, November 12, 2004 8:25 AM
To: [log in to unmask]
Subject: Re: [TN] OSP standard


Ted - currently there is no IPC standard for OSP. This finish will be the
next standard to come from the 4-14 plating committee and will be the 4555
document. As a user of OSP coating, my thickness ranges from 1500 to 3500
Angstroms for one supplier and 3000 to 5500 for another supplier.


Regards,

Gerard O'Brien
Photocircuits Corporation
Co-chairman 4-14

-----Original Message-----
From: Ted Kong [mailto:[log in to unmask]]
Sent: Thursday, November 11, 2004 8:14 PM
To: [log in to unmask]
Subject: [TN] OSP standard

Hi fellow Technettes,

Is there a standard on OSP thickness and tolerances?
If anyone is using OSP, please let me know what
thickness and tolerance are being specified.

Thanks all in advance.

Ted Kong

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around
http://mail.yahoo.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
847-615-7100 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
-----------------------------------------------------

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