2SD789-D 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): 250 to 500
• 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-D transistor can have a current gain of 250 to 500. The gain of the 2SD789 will be in the range from 100 to 800, for the 2SD789-B it 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-E it will be in the range from 400 to 800.Sometimes the "2S" prefix is not marked on the package - the 2SD789-D might only be marked "D789-D".You can replace the 2SD789-D with the 2SC6043, 2SD1207, 2SD1347, 2SD1616, 2SD1835 or KSD1616.