MMST5401 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -160 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -0.2 A
• Collector Dissipation: 0.2 W
• DC Current Gain (h_fe): 60 to 240
• Transition Frequency, min: 300 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-323
• Electrically Similar to the Popular 2N5401 transistor

Here is an image showing the pin diagram of this transistor.The MMST5401 transistor is marked as "K4M".The complementary NPN transistor to the MMST5401 is the MMST5551.The 2N5401 is the TO-92 version of the MMST5401.