Good Friday, I am not be able to get through to the Technet from my email account at the company, so i am using my old account at school. We are constantly looking at substrate technologies in our company. I came across one article in a recent issue of Semiconductor International which has information on an IBM substrate from IBM Microelectronics: "IBM Interconnect Products recently introduced an organic substrate, called a high-performance chip carrier (HPCC), with a CTE of 12x10-6/K. It has a closer match to silicon than most organic-based substrate materials" Do anyone know where to find more information? You can contact me @ 408-544-7508 if you want. Thanks, Yuan Li ############################################################## 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 ##############################################################