2N5401S Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -160 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.6 A
• Collector Dissipation: 0.35 W
• DC Current Gain (h_fe): 60 to 240
• Transition Frequency, min: 100 MHz
• Noise Figure, max: 8 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The 2N5401S transistor is marked as "ZE".The complementary NPN transistor to the 2N5401S is the 2N5551S.You can replace the 2N5401S with the MMBT5401.