2SD1830 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 110 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 1500
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SD1830 might only be marked "D1830".The complementary PNP transistor to the 2SD1830 is the 2SB1228.You can replace the 2SD1830 with the 2SD1196, MJF6388 or MJF6388G.