BC447A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.3 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 120 to 220
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC447A is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the collector, base, and emitter leads.
Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the BC447A is the BC448A.The 2SC4209 (SOT-23) and 2SC4209-Y (SOT-23) is the SMD version of the BC447A transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BC447A with the BC447, BC449, BC449A, BC489 or BC489A.