Dave - there is only one supplier of the thin Silver and they are now offering a thicker silver. Given that, the majority is thick silver. 25 micro inches on what pad size? Did they follow the 30% rule for collimator to pad for XRF measurement? Were they using the correct energy level to measure I Ag? The 4553 group is actively working to determine the upper limit due to the fears of Ag3Sn IMC's that are known bad actors when it comes to solder joint embrittlement. I would suggest having an independent check on their thickness. Regards Gerard O'Brien Co-chairman 4-14 plating -----Original Message----- From: Dave Seymour [mailto:[log in to unmask]] Sent: Friday, May 27, 2005 9:03 AM To: [log in to unmask] Subject: Re: [TN] Immersion Silver - Fab notes All, The IPC draft IPC-4553 spec listed below mentions two types of valid silver plating. Thin 3-5 micro inch and Thick as 8-12 micro inch. What are board fabricators typically using Thin or Thick? Also, I saw a presentation from a board shop recently with Silver thickness up to 25 micro inch. It that too thick? What is too Thick? Thanks in advance, Dave Seymour Gerard O'Brien wrote: >There is a new spec that has just completed balloting - IPC-4553. Ken, you >can go the committee home page 4-14 at ipc.org and find a copy of the draft >that will soon be released. > >Regards > > >Gerard O'Brien >Co-chairman 4-14 > >-----Original Message----- >From: Ken Patel [mailto:[log in to unmask]] >Sent: Wednesday, March 09, 2005 1:51 PM >To: [log in to unmask] >Subject: [TN] Immersion Silver - Fab notes > >All, >What kind of note should I put on fab drawing if I >want to use Immersion Silver as my surface finish. Is >there any IPC- document that also I can refer to as >part of my note. > >Any help will be appreciated. > >re, >ken patel > > > > >__________________________________ >Celebrate Yahoo!'s 10th Birthday! >Yahoo! Netrospective: 100 Moments of the Web >http://birthday.yahoo.com/netrospective/ > >--------------------------------------------------- >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 >----------------------------------------------------- > > > > -- Dave Seymour, CID+ Catapult Communications Inc. 800 Perimeter Park Dr, Suite A Morrisville, NC 27560 Direct: (919)653-4249 Main: (919)653-4180 Fax: (919)653-4297 [log in to unmask] --------------------------------------------------- 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 -----------------------------------------------------