On Jan 14, 19:16, Tony Duell wrote: No, but it's in my Japanese transistor book (I can't tell you the proper title because it's in Japanese :-)) Yes, it's a PNP power trannie, in an ATV package, which is a bit like a TO220 but without the metal tab. It has a beveled edge on the front top, instead of a metal tab on the back. Vcbo -60V Vceo -50V Ic(max) -3A Pc 1W Icbo -10microA Vcb -40V hFE min 56 max 390 at Vce=-3V Ic -0.5A Vce(sat) -1V Vbe(sat) -1.5V Ft 100MHz Pin order is ECB (opposite of the common TO220). Near equivalent 2SD1864. -- Pete Peter Turnbull Network Manager University of York