BCX54-10 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 45 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 BCX54-10 transistor can have a current gain of 63 to 150. The gain of the BCX54 will be in the range from 63 to 250, for the BCX54-16 it will be in the range from 100 to 250.The BCX54-10 transistor is marked as "BC".The complementary PNP transistor to the BCX54-10 is the BCX51-10.You can replace the BCX54-10 with the 2SC3444, BCX55, BCX55-10, BCX56 or BCX56-10.