Ron, only one way to know : solder both alloys in identical process on identical substrates/pads, etc. any variations of cooling profile (just to mention something) will influence readings on crystal formations = strength . Answers are infinite, variable, customizable, ..............>>>>> Hook your trusty puller on it ; compare : you'll be home in one day with full validational base ; spending one more day on documentation . Beauty and shear strengths are only and always in the eye of the beholder (As Werner may tell you as well ; if he digs himself out of his favorite sandbunker) Paul Klasek ResMed -----Original Message----- From: Vandendolder, Ron [mailto:[log in to unmask]] Sent: Wednesday, 8 September 1999 23:43 To: [log in to unmask] Subject: [TN] acceptable solder joint shear strength? Does anyone know what the minimum acceptable solder joint shear strengths are for Sn63/Pb37 and In50/Pb50 ? We are trying to optimize our soldering to gold interconnect process and need some baseline/ industry standard numbers. Thanks Ron VandenDolder Operations Manager Millitech Corp [log in to unmask] ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################