BCX55-10 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 1.2 W
• DC Current Gain (h_fe): 63 to 150
• Transition Frequency, min: 130 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The BCX55-10 transistor can have a current gain of 63 to 150. The gain of the BCX55 will be in the range from 63 to 250, for the BCX55-16 it will be in the range from 100 to 250.The BCX55-10 transistor is marked as "BG".The complementary PNP transistor to the BCX55-10 is the BCX52-10.You can replace the BCX55-10 with the 2SC3444, BCX56 or BCX56-10.