Ouch! It don't get any more basic than that... The data sheet specifies at the very top: "Vdss 100v" I had the +12 on the source. The internal diode did its job just fine. Thank you... John Ferrell 6241 Phillippi Rd Julian NC 27283 Phone: (336)685-9606 Dixie Competition Products NSRCA 479 AMA 4190 W8CCW "My Competition is Not My Enemy" -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.