2SD1414 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 2000
• 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 2SD1414 might only be marked "D1414".The complementary PNP transistor to the 2SD1414 is the 2SB1024.You can replace the 2SD1414 with the 2SD1276A, 2SD1276A-P, 2SD1276A-Q, 2SD1277A, 2SD1277A-P, 2SD1277A-Q, 2SD1415, 2SD1415A, 2SD1891, 2SD1891-P, 2SD1891-Q, 2SD1892, 2SD1892-P, 2SD1892-Q, 2SD2495, 2SD2495-O, 2SD2495-P, 2SD2495-Y, 2SD560, 2SD560-KB, 2SD560-LB, 2SD560-MB, 2SD633, 2SD634, 2SD837A-P, 2SD837A-Q, KSB601, KSB601-O, KSB601-R, KSB601-Y, KSD560, KSD560-O, KSD560-R, KSD560-Y, MJF122, MJF122G, MJF6388, MJF6388G or TTD1415B.