PMBTA45 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 500 V
• Collector-Base Voltage, max: 500 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.15 A
• Collector Dissipation: 0.3 W
• DC Current Gain (h_fe): 50
• Transition Frequency, min: 35 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-23
• Electrically Similar to the Popular MPSA45 transistor

Here is an image showing the pin diagram of this transistor.The PMBTA45 transistor is marked as "LKp".The MPSA45 is the TO-92 version of the PMBTA45.You can replace the PMBTA45 with the STR1550.