Ezequiel, Is the finish immersion gold or hard gold? If it is hard gold is there a solder joint reliability issue soldering to hard gold? Highest Regards, William W. DeCray III Waytec Electronics Corp Engineering Services Manager PHONE:(434) 237-6391 ext 115 CELL: (434) 851-6115 FAX: (434) 237-1324 E-mail:<[log in to unmask]> Web http://www.waytec.com FTP ftp://ftp.waytec.com -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Ezequiel Cruz Sent: Monday, March 31, 2003 5:23 PM To: [log in to unmask] Subject: [TN] Silver Fill Plugged Vias / Gold Body Could someone help me with the following. I have a BGA with 5 mil (.127 mm) holes through the entire stack. I need these silver filled plugged. I need the correct call out for my notes on this procedure. I also have a requirement to have this design finished in gold. My regular board house calls this finish "Gold Body". However, I really need the thickness call outs since this finish is being used for manufacturing and reliability issues per the above BGA. But I also have an area for a mix connector which should increase the thickness of the finish in that area since these will be surface contact pads. If there is anyone out there who can help me with these issues, I really appreciate the feedback. Thank You, Ezequiel Cruz --------------------------------------------------- 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 -----------------------------------------------------