2SD745B-S Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 160 V
• Collector-Base Voltage, max: 160 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 10 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 15 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.The 2SD745B-S transistor can have a current gain of 40 to 80. The gain of the 2SD745B will be in the range from 40 to 200, for the 2SD745B-Q it will be in the range from 100 to 200, for the 2SD745B-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SD745B-S might only be marked "D745B-S".The complementary PNP transistor to the 2SD745B-S is the 2SB705B-S.You can replace the 2SD745B-S with the 2N6676, 2SC2428, 2SD424, 2SD424-R, 2SD552, 2SD552-R, 2SD555, 2SD555-S, 2SD733K, 2SD733K-C, 2SD746, 2SD746-S, 2SD746A, 2SD746A-S, 2SD753, BUY69C, BUY70C, MJ15011 or MJ15011G.