2SD845 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: 12 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 55 to 160
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: MT-200

Here is an image showing the pin diagram of this transistor.The 2SD845 transistor can have a current gain of 55 to 160. The gain of the 2SD845-O will be in the range from 80 to 160, for the 2SD845-R it will be in the range from 55 to 110.Sometimes the "2S" prefix is not marked on the package - the 2SD845 might only be marked "D845".The complementary PNP transistor to the 2SD845 is the 2SB755.You can replace the 2SD845 with the 2SC2565, 2SC2773, 2SC2838, 2SC2921, 2SC2922, 2SC3857 or 2SC3858.