Bill: We have used a material from Thermagon, Inc. It has a thermal conductivity 10 times FR-4 products. It can be laminated to thermal base plates or in combination with standard laminates. Their contact information is: Thermagon, Inc. 4707 Detroit Avenue Cleveland, OH 44102-2216 Tel: 216-939-2300 Fax: 216-939-2310 Toll Free: 888.246.9050 http://www.thermagon.com Robert B. Denbo Engineering Manager Midwest Printed Circuit Services, Inc. 1741 Circuit Drive Round Lake Beach, IL 60073 (847) 740-4120 Fax (847) 740-4187 http://www.midwestpcb.com -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Brooks Bill Sent: Tuesday, September 19, 2000 5:28 PM To: [log in to unmask] Subject: [TN] PCB Materials - Thermal conduction 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 - [log in to unmask] Zoneworx, Inc. 40925 County Center Drive, STE 200 Temecula, CA 92591 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 http://www.ipc.org/SanDiego/index.html http://home.fda.net/bbrooks/pca/