2SD874A-Q Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 85 to 170
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The 2SD874A-Q transistor can have a current gain of 85 to 170. The gain of the 2SD874A will be in the range from 85 to 340, for the 2SD874A-R it will be in the range from 120 to 240, for the 2SD874A-S it will be in the range from 170 to 340.The 2SD874A-Q transistor is marked as "YQ".The complementary PNP transistor to the 2SD874A-Q is the 2SB766A-Q.You can replace the 2SD874A-Q with the 2SC2873, 2SC3444, BCX55 or BCX56.