On Sat, 25 Jul 1998 19:41:02 -0400, you wrote: >Hi! > >I'm looking for recomendations for TO-220 NPN and PNP transistors that have >moderate current gains at about 1 Amp. Should be good for at least 40V, hfe >greater than 100, reasonably robust. My old standbys TIP31, TIP32, TIP41, >TIP42 don't have enough gain and the TIP120 - TIP127 are darlingtons and >have too much voltage drop. I don't need complimentary pairs so unmatched >parts are fine. North American part numbers preferred. Any thoughts? > >Thanks! > >dwayne > > >Dwayne Reid >Trinity Electronics Systems Ltd Edmonton, AB, CANADA >(403) 489-3199 voice (403) 487-6397 fax Not TO-220 (TO126), but I've used BUP40/BUP41 where I needed on/off switching with less loss than darlingtons. Fairly cheap and reasonable gain. If drop is a worry, any reason for not using Mosfets? ____ ____ _/ L_/ Mike Harrison / White Wing Logic / wwl@netcomuk.co.uk _/ L_/ _/ W_/ Hardware & Software design / PCB Design / Consultancy _/ W_/ /_W_/ Industrial / Computer Peripherals / Hazardous Area /_W_/