MMBT4355 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.8 A
• Collector Dissipation: 0.35 W
• DC Current Gain (h_fe): 100 to 400
• Noise Figure, max: 3 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23
• Electrically Similar to the Popular 2N4355 transistor

Here is an image showing the pin diagram of this transistor.The MMBT4355 transistor is marked as "81".You can replace the MMBT4355 with the MMBT4354.