Bill, We built several test vehicles with SnAgCu, SnAg, SnCu, and SnAgCuSb, from various solder paste manufacturers within our Demonstration Factory. We did not make any changes to our stencils or our screen printing process from SnPb. In fact, we did not make any changes within respect to screen printing and component placement (solder paste tackiness). Of course, the reflow soldering profile changed dramatically (between 240C and 260C peak temperature). Give me a call OFF LINE (or anyone else on TechNet) and I can share some information with you. Hope this helps. Lee Whiteman Senior Manufacturing Engineer E-Mail: [log in to unmask] <mailto:[log in to unmask]> Ph: (610) 362-1200 x208 Fax: (610) 362-1290 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Coleman, Bill Sent: Friday, January 24, 2003 4:41 PM To: [log in to unmask] Subject: [TN] Lead Free Solder I would like to ask the Technet group a question that some of my customers ask me. Are there any particular changes to stencil apertures when converting to Lead Free Solder Paste. Thanks, William E. Coleman Vice President - Technology Photo Stencil An ISO 9001 Registered Company 4725 Centennial Blvd. Colorado Springs, CO 80919 Phone # 719-535-8528 Fax # 719-599-4334 Cell # 719-331-2433 email: [log in to unmask] <mailto:[log in to unmask]> --------------------------------------------------- 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 -----------------------------------------------------