Guy - I believe the measurement is taken over the contacts on the board, but pull the data sheet on the mating socket just to be sure. It should give you the range of thicknesses that the socket is tolerant of. Regards - Kelly -----Original Message----- From: Guy Ramsey <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> Date: Monday, December 27, 1999 9:16 AM Subject: [TN] SIMM thickness issues >We are having problems with the interface between SIMM boards and sockets (72 >Pin). The boards are supposed to be .050" +.004" to -.003". I think that is >an industry standard. Where do you measure the thickness from. The board surface >or the conductor surface. We have some that measure .045 at the glass and .047 >on the edge connectors. They don't work very well, intermittent. > >Anyone else have trouble like this? > >############################################################## >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 ##############################################################