MMBT6429 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 55 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.2 A
• Collector Dissipation: 0.35 W
• DC Current Gain (h_fe): 500 to 1250
• Transition Frequency, min: 100 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.You can replace the MMBT6429 with the 2SC3912, 2SC3913, 2SC3914, 2SC3915, FMMT619, FMMT620, FMMTA05, FMMTA06, KST05, KST06, MMBTA05, MMBTA06, PMBTA06, SMBTA05 or SMBTA06.