2SD745A-Q Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 150 V
• Collector-Base Voltage, max: 150 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 10 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 100 to 200
• 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 2SD745A-Q transistor can have a current gain of 100 to 200. The gain of the 2SD745A will be in the range from 40 to 200, for the 2SD745A-R it will be in the range from 60 to 120, for the 2SD745A-S it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SD745A-Q might only be marked "D745A-Q".The complementary PNP transistor to the 2SD745A-Q is the 2SB705A-Q.You can replace the 2SD745A-Q with the 2N6676, 2SC1585, 2SC1586, 2SC2337A, 2SC2337A-Q, 2SC2428, 2SC2522A, 2SC2523, 2SD555, 2SD555-Q, 2SD733K, 2SD733K-E, 2SD745B, 2SD745B-Q, 2SD746, 2SD746-Q, 2SD746A, 2SD746A-Q, 2SD753, 2SD753-C, BUY69C or BUY70C.