Hi, Some time back I did a thermal characterization of the MLB lamination process, which also involved the determination of the conductivities of all the materials involved. I m,easured the conuctivity of Kraft paper as 0.060+/-10% Btu/hr-ft-oF (sorry, you have to do the conversion yourself). The interfaces between layers of Kraft paper provided contact resistances equivalent to an added paper thickness of 0.15 mils. The specific heat was not much of factor, so I do not have a number. Werner Engelmaier Engelmaier Associates, Inc. Electronic Packaging, Interconnection and Reliability Consulting 23 Gunther Street Mendham, NJ 07945 USA Phone & Fax: 201-543-2747 E-mail: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************