2SD789 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 100 to 800
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SD789 transistor can have a current gain of 100 to 800. The gain of the 2SD789-B will be in the range from 100 to 200, for the 2SD789-C it will be in the range from 160 to 320, for the 2SD789-D it will be in the range from 250 to 500, for the 2SD789-E it will be in the range from 400 to 800.Sometimes the "2S" prefix is not marked on the package - the 2SD789 might only be marked "D789".The complementary PNP transistor to the 2SD789 is the 2SB740.