BCX51-10 Bipolar Transistor

• Type: PNP
• 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: 50 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 BCX51-10 transistor can have a current gain of 63 to 150. The gain of the BCX51 will be in the range from 63 to 250, for the BCX51-16 it will be in the range from 100 to 250.The BCX51-10 transistor is marked as "AC".The complementary NPN transistor to the BCX51-10 is the BCX54-10.You can replace the BCX51-10 with the 2SA1364, BCX52, BCX52-10, BCX53, BCX53-10 or KTA1668.