PZTA42 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 300 V
• Collector-Base Voltage, max: 300 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.5 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 40
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-223

Here is an image showing the pin diagram of this transistor.The PZTA42 transistor is marked as "A42".The complementary PNP transistor to the PZTA42 is the PZTA92.You can replace the PZTA42 with the PBHV8540Z.