Decwriter power supply transistors R3004

Brian Knittel <bknittel at quarterbyte.com> writes: Given that the previous three lines are: XA 55 PNP 500MW SI 60 50 P D 44Q5 NPN 31W SI225 30 XA 05 NPN 500MW SI 60 50 P I'd assume that's actually meant to be NPN 100W SI325 15 (although it looks like a 1 to me on the printset as well, Vceo = 1325V seems a bit unlikely). There was a thread about interpreting these specs last year: http://www.classiccmp.org/pipermail/cctalk/2012-April/127683.html So I guess you're looking for a silicon NPN transistor with 100W max power dissipation, a Vceo of 325V or better, and an hFE about 15 (and the right pinout!). Tony or one of the other PSU gurus can probably suggest something that'll do the job? Thanks, -- Adam Sampson <ats at offog.org> <http://offog.org/>