To: Technet I am interested in what is known about thermal conductivity and PCB materials. I see a lot of CTE interest but no thermal conductivity for cooling the electronics going on.... Has anyone out there had any experience with this sort of problem? What sort of materials are being used or experimented with? Thanks in advance... Bill Brooks Senior PCB Designer - <mailto:[log in to unmask]> [log in to unmask] Zoneworx, Inc. 40925 County Center Drive, STE 200 Temecula, CA 92591 <http://www.zoneworx.com/> http://www.zoneworx.com Tel: (909) 296-1226 x 1037 Co-Director / Education Officer / Webmaster for the San Diego Chapter of the IPC Designers Council<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> http://www.ipc.org/SanDiego/index.html <http://www.ipc.org/SanDiego/index.html> http://home.fda.net/bbrooks/pca/ <http://home.fda.net/bbrooks/pca/>