2N555 - Motorola

2N555 PNP germanium power transistors

2N 178 (GERMANIUM) 2N554 2N555 ~ PNP germanium power transistor for non-critical power amplifier and power switching applications re- CASE 11 (TO-3) quiring economical components. MAXIMUM RATINGS Rating Symbol 2N:178 2N554 2N555 Unit Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage Collector Current Total Device ,Dissipation @ T.

Features

ts below which the device will not go into secondary breakdown. Collector load lines for specific circuits must fall within the applicable Safe Area to avoid causing a collector-emitter short. ,2 . .. ,
•0 20 3D COLUCTONMlml VOLTAGE (VOLTS) (Duty cycle of the excursions make no significant change in these safe areas.) To insure operation below the maximum TI, the power-temperature derating curve must be observed for both steady state and pulse power conditions. 2-8 2N 178, 2N554, 2N555 (continued) ELECTRICAL CHARACTERISTICS ;(TC =250 C unless otherwise noted) Characteristic I I I S.