Thermally conductive thermoplastics-a viable alternative for coil wound device and passive component construction

Thermoplastics have made steady gains in use in a wide variety of electrical applications. One of the few areas in which thermoplastics have not been effectively utilized are applications where thermal conductivity is required. Central to the development of these materials is an understanding of the heat transfer and electrical insulation requirements of the applications and the cost/benefit relationships that exist. A simple model is presented in which the heat transfer requirements for thermally conductive materials can be understood and their costs can be estimated. Various filler systems and their performance are discussed highlighting opportunities where these materials offer a competitive alternative to existing construction techniques.