NTE473 Silicon NPN Transistor RF Power Driver Description: The NTE473 is a silicon NPN transistor in a TO39 type package designed for amplifier and oscillator applications in military and industrial equipment. Suitable for use as output, driver or predriver stages in VHF equipment. Features: Specified 175MHz, 28V Characteristics: Output Power: 2.5W Minimum Gain: 10dB Efficiency: 50% Absolute Maximum Ratings: CollectorEmitter Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V CEO CollectorBase Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65V CB EmitterBase Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4V EB Collector Current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A C Total Device Dissipation (T = +25C), P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7W C D Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mW/C Operating Junction Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +200C J Storage Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +200C stg Electrical Characteristics: (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit OFF Characteristics CollectorEmitter Sustaining Voltage V I = 200mA, I = 0, Note 1 40 V CEO(sus) C B EmitterBase Breakdown Voltage V I = 0.1mA, I = 0 4 V (BR)EBO E C Collector Cutoff Current I V = 30V, I = 0 0.1 mA CEO CE B I V = 30V, V = 1.5V, T = +200C 5.0 mA CEX CE BE(off) C V = 65V, V = 1.5V 1.0 mA CE BE(off) Emitter Cutoff Current I V = 4V, I = 0 0.1 mA EBO BE C Note 1. Pulsed thru a 25mH inductor.Electrical Characteristics (Contd): (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit ON Characteristics DC Current Gain h I = 250mA, V = 5V 10 FE C CE CollectorEmitter Saturation Voltage V I = 250mA, I = 50mA 1.0 V CE(sat) C B Dynamic Characteristics Current Gain Bandwidth Product f I = 100mA, V = 28V, f = 100MHz 500 MHz T C CE Output Capacitance C V = 30V, I = 0, f = 100kHz 8.0 10.0 pF ob CB E Functional Tests Power Input P V = 28V, P = 2.5W, f = 175MHz 0.25 W in CE out CommonEmitter Amplifier Power Gain G 10 dB pe Collector Efficiency 50 % .370 (9.39) Dia Max .355 (9.03) Dia Max .260 (6.6) Max .500 (12.7) Min .018 (0.45) Dia Base Emitter Collector/Case 45 .031 (.793)