On Tue, Mar 13, 2012 at 2:17 PM, Electron wrote: > > Hello, > > could anyone please suggest a cheap NPN transistor rated at least 400V an= d with a > current capability of at least 1.5A and a gain (at that current) of at le= ast 100? > > Possibly not a darlington. > > If such a toy even exists. :P I can't find one.. a cheap one at least, bu= t maybe > I'm missing some classic high voltage ~1.5A power transistor with high ga= in? I > need to use it as a switch, but I don't wanna use a MOSFET in this circui= t, for > a lot of considerations (cost, ease of drive, number of components on the= PCB..). > > Thanks! > Mario Digikey doesn't list any with a gain that large. Have you considered a hybrid? Use a small P MOSFET driving the NPN base. FDV302 P-MOSFET is $.06 at large quantity. Rating says 120mA. Use it to drive the base of a normal NPN which has a gain of 20 to 40 at 40= 0V. --=20 Martin K. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .