MMBT2222A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 75 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.35 W
• DC Current Gain (h_fe): 100 to 300
• Transition Frequency, min: 300 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23
• Electrically Similar to the Popular 2N2222A transistor

Here is an image showing the pin diagram of this transistor.The MMBT2222A transistor is marked as "1P".The complementary PNP transistor to the MMBT2222A is the MMBT2907A.You can replace the MMBT2222A with the FMMT491, FMMT491Q or FMMT619.