2907 transistor datasheet 2n3904


Apr 11, 2009 · For a 100 ma ic the 2n3904 is basicaly into the saturation region. So now it is a switch rule of thumbe a forcew beta of 10 or 10ma Ib. I think HIS question maybe how to bias a transitor as class Amplifier and if so then he need to re-introduce the question. just guessing. 2N3904 fT 250 300 − − MHz Output Capacitance (VCB = 5.0 Vdc, IE = 0, f = 1.0 MHz) Cobo − 4.0 pF Input Capacitance (VEB = 0.5 Vdc, IC = 0, f = 1.0 MHz) Cibo − 8.0 pF Input Impedance (IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz) 2N3903 2N3904 hie 1.0 1.0 8.0 10 k Voltage Feedback Ratio (IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz) 2N3903 2N3904 hre 0.1 0.5 5.0 8.0 X 10−4 DATA SHEET Product specification Supersedes data of 1997 Jul 15 1999 Apr 23 DISCRETE SEMICONDUCTORS 2N3904 NPN switching transistor book, halfpage M3D186 2N3903, 2N3904 2N3903 is a Preferred Device General Purpose Transistors NPN Silicon Features Electrically similar transistors in a TO-92 package: PN2907, MPS2907, KN2907, KTN2907 Replacement and equivalent transistor for the 2N2907 You can replace the 2N2907 with the 2N2907A or NTE159M