MMST4126 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -25 V
• Collector-Base Voltage, max: -25 V
• Emitter-Base Voltage, max: -4 V
• Collector Current − Continuous, max: -0.2 A
• Collector Dissipation: 0.2 W
• DC Current Gain (h_fe): 120 to 480
• Transition Frequency, min: 250 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-323
• Electrically Similar to the Popular 2N4126 transistor

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the MMST4126 is the MMST4124.The 2N4126 is the TO-92 version of the MMST4126.You can replace the MMST4126 with the BC807W or BC808W.