2SD789-C 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): 160 to 320
• 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-C transistor can have a current gain of 160 to 320. 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-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-C might only be marked "D789-C".The complementary PNP transistor to the 2SD789-C is the 2SB740-C.The 2SD1615A (SOT-89) is the SMD version of the 2SD789-C transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD789-C with the 2SC1384, 2SC3940A, 2SC4408, 2SC4604, 2SD1207, 2SD1347, 2SD1616, 2SD1616A, 2SD1835, 2SD667, 2SD667D, 2SD863, 2SD863-F, KSD1616, KSD1616A, KTC1008, KTC1008-GR, KTD863, KTD863-GR or NTE382.