FMMT449 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 100 to 300
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23
• Electrically Similar to the Popular ZTX449 transistor

Here is an image showing the pin diagram of this transistor.The FMMT449 transistor is marked as "449".The complementary PNP transistor to the FMMT449 is the FMMT549.The ZTX449 is the TO-92 version of the FMMT449.You can replace the FMMT449 with the FMMT491, FMMT491Q, FMMT619 or MMBT2222A.