FMMT451 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 50 to 150
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The FMMT451 transistor is marked as "451".The complementary PNP transistor to the FMMT451 is the FMMT551.