Brian: Transistor and Integrated Circuit "plastic" encapsulants usually are some recipe of Epoxy Novolac. I'd suggest doing a Google search for [Epoxy Novolac +electrical characteristics]. Or, do an end run on a manufacturer. You might try calling Philips Semiconductor on Arques Avenue in Sunnyvale, California. Ask for Bill Hobdy. He's an epoxy expert there. I worked with him for many years, so use my name if it helps get through the maze. Good luck! Jim Ericson Acme Testing Company Acme, Washington [email protected]
----- Original Message ----- From: [email protected] To: [email protected] Sent: Monday, March 03, 2003 11:40 AM Subject: E.S. of plastic xstr case Good People of PSTC: I have noted that there is a CCA decision stating that the "plastic enclosure of a semiconductor cab be considered as basic insulation..." But I cannot find manufacturers' specs listing the dielectric strength of the plastic case (e.g., TO-0220). Am I overlooking an obvious data source? They must design this in, because all of the FETs that I have tested do ok up to approx 2500Vdc. thanks much. R/S, Brian
