NTE158 Germanium PNP Transistor Audio Power Amplifier Description: The NTE158 is a germanium PNP triode transistor in a TO1 type package designed for low–power, large signal audio applications. Absolute Maximum Ratings: (TA = +25°C) Collector–Base Voltage, VCBO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V Collector–Emitter Voltage (RBE ≤ 500Ω), VCER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V Emitter–Base Voltage, VEBO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V Collector Current, IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A Base Current, IB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Power Dissipation (TA = +25°C), PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550mW Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3mW/°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +90°C Lead Temperature (During Soldering, 1/16” ±1/32” from case for 5sec), TL . . . . . . . . . . . . . . +245°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Collector–Base Breakdown Voltage V(BR)CBO IC = 200µA, IE = 0 32 – – V Emitter–Base Breakdown Voltage V(BR)EBO IE = 200µA, IC = 0 10 – – V Collector Cutoff Current ICBO VCB = –10V, IE = 0 – – 10 µA Emitter Cutoff Current IEBO VEB = –5V, TJ = +75°C – – 500 µA DC Current Gain hFE VCB = 1V, IC = 300mA 60 90 175 Base–Emitter Voltage VBE VCE = 1V, IC = 300mA 280 – 380 mV Forward Current Transfer Cutoff Frequency fhfe 10 – 20 kc Output Capacitance Cob 80 – 105 pF VCB = –5V, IE = 0 @ 0.45mc .240 (6.09) Dia Max .410 (10.4) Max 1.500 (38.1) Min .018 (0.45) .071 (1.82) Dia Base Emitter Collector