Paul Birkeland Moderator Staff member Apr 16, 2019 #21 The 431s that we got that were bad have "WS" written on them. I don't think the PN2907 should be any quieter than the 2N2907, but it could be!
The 431s that we got that were bad have "WS" written on them. I don't think the PN2907 should be any quieter than the 2N2907, but it could be!