Hello, I am using a TO-247 packaged device which has the mounting tab fully encapsulated in plastic. Could anyone shed some light on the dielectric properties (esp voltage) of the plastic used for this? This is a safety compliance issue for one of our designs. Any responses would be greatly appreciated. thanks, Phil. Phil Dutton C.I.D. Senior CAD Technician IPC Certified Interconnect Designer Vision Abell Pty Ltd Second Avenue, Technology Park, Mawson Lakes. SOUTH AUSTRALIA 5095 ================================ Phone : (08) 8300 4400 (reception) Fax : (08) 8349 7420 email: [log in to unmask] Internet Page: http://www.vsl.com.au ================================ ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################