Remi, You may want to talk to a company called Chomerics. I do not have their address, etc. here. You are justified in your wariness of tapes, though. But it is not necessarily the tape's fault. Check the planarity of the heat sink and the component. The results may shock you. regards, Bev Christian XLTEK -----Original Message----- From: Remi Charron [mailto:[log in to unmask]] Sent: Wednesday, September 13, 2000 2:15 PM To: [log in to unmask] Subject: [TN] SMT heat sink attachment Hi Everyone, I am looking for a way to attach a heat sink to a BGA (45mm) without adhesives, and without clipping directly onto the component, or a socket. Has anyone seen some type of hook that can be placed onto the board during surface mount, which could have a clip attach onto it? If anyone knows of another type of mechanical attachment method that does not require holes drilled in the board, a socket, or clipping onto a component, I would like to hear about it. We are reluctant to try adhesive tapes, since they are known to have bad contact area. If someone knows of a double sided tape that has good thermal properties, and forms good contact area, I would also like to hear about it. Thanks in advance for your time, Remi ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################