2N404A Germanium PNP Transistor Medium Speed Switch TO5 Type Package Absolute Maximum Ratings: (T = +25C unless otherwise specified) A Collector Base Voltage, V ...................................................... 40V CBO EmitterBase Voltage, V ........................................................ 25V EBO CollectorEmitter Voltage (Note 1), V .............................................. 35V CE Collector Current, I ............................................................. 150mA C Total Device Dissipation, P D T = +25C .............................................................. 150mW A T = +55C ................................................................ 90mW A T = +71C ................................................................ 60mW A Storage Temperature Range, T .......................................... 65 to +100C stg Note 1. Reach through voltage. Electrical Characteristics: (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit CollectorBase Breakdown Voltage V I = 20A 40 V (BR)CBO C EmitterBase Breakdown Voltage V I = 20A 25 V (BR)EBO E Reach Through Voltage V 35 V RT Collector Cutoff Current I V = 12V 5 A CBO CB T = +80C 90 A A Emitter Cutoff Current I V = 2.5V 2.5 A EBO EB CollectorEmitter Saturation Voltage V I = 0.4mA, I = 12mA 0.15 V CE(sat) B C I = 1mA, I = 24mA 0.2 V B C Base Input Voltage V I = 0.4mA, I = 12mA 0.35 V BE B C I = 1mA, I = 24mA 0.4 V B CElectrical Characteristics (Contd): (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit High Frequency Characteristics Alpha Cutoff Frequency f 4 mcs hfb Collector Capacitance C f = 2mcs 20 pF ob Stored Base Charge QSB I = 1mA, I = 10mA 1400 pcb B C Base Spreading Resistance rb 100 Input Resistance h 2700 ie Noise Figure NF 1kc, 1 cycle wide 3.5 dB Low Frequency Characteristics (Common Emitter) Output Admittance h 400 mhos oe 4 Voltage Feedback Ratio h 8.4 x10 re Forward Current Transfer Ratio h 86 fe Input Impedance h 450 ie .352 (8.95) Dia Max .320 (98.13) Dia Max .250 (6.35) Max 1.500 (38.1) Min .019 (0.5) Dia Base Emitter Collector 45 .031 (.793)