2SD414-S 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: 0.8 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 45 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SD414-S transistor can have a current gain of 40 to 80. The gain of the 2SD414 will be in the range from 40 to 320, for the 2SD414-P it will be in the range from 160 to 320, for the 2SD414-Q it will be in the range from 100 to 200, for the 2SD414-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SD414-S might only be marked "D414-S".The complementary PNP transistor to the 2SD414-S is the 2SB548-S.You can replace the 2SD414-S with the 2N4923, 2N4923G, 2N5192, 2N5192G, 2SD415, 2SD415-S, BD139, BD139-6, BD139G, BD169, BD179, BD230, BD237, BD237G, BD379, BD379-6, BD441, BD441G, BD789, BD791, MJE240, MJE241, MJE242, MJE243, MJE243G, MJE244, MJE722 or NTE184.