NTE121 Germanium PNP Transistor Audio Frequency Power Amplifier Description: The NTE121 is a Germanium PNP Alloy Junction transistor in a TO3 type package designed as an audio frequency power output amplifier. Absolute Maximum Ratings: (T = +25C unless otherwise specified) A Collector Base Voltage, V ....................................................... 60V CBO CollectorEmitter Voltage (R = 68), V .......................................... 45V BE CER EmitterBase Voltage, V ......................................................... 10V EBO Collector Current, I ................................................................ 10A C Emitter Current, I .................................................................. 10A E Base Current, I .................................................................... 3A B Power Dissipation (T +55C), P ................................................. 90W C D Operating Junction Temperature, T ............................................... +100C J Storage Temperature Range, T .......................................... 55 to +100C stg Note 1. Matched pairs are available upon request (NTE121MP). Matched pairs have their gain specification (h ) matched to within 10% of each other. FE Electrical Characteristics: (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit CollectorEmitter Breakdown Voltage V I = 0.6A, R = 68 45 V (BR)CER C(peak) BE Collector Cutoff Current I V = 30V, I = 0 0.5 mA CBO CB E DC Current Gain h V = 2V, I = 1A 50 90 165 FE CE C BaseEmitter Input Voltage V V = 2V, I = 1A 0.38 V BE CE C CollectorEmitter Saturation Voltage V I = 10A, I = 1A 0.3 V CE(sat) C B Transition Frequency f V = 2V, I = 1A 300 kHz T CB E Rev. 812.135 (3.45) Max .350 (8.89) .875 (22.2) Dia Max Seating Plane .312 (7.93) Min .040 (1.02) Emitter 1.187 (30.16) .215 (5.45) .665 (16.9) .156 (3.96) Dia (2 Holes) .430 (10.92) .188 (4.8) R Max .525 (13.35) R Max Base Collector/Case