BC490 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 60 to 400
• Transition Frequency, min: 75 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC490 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 BC490 transistor can have a current gain of 60 to 400. The gain of the BC490A will be in the range from 100 to 250, for the BC490B it will be in the range from 160 to 400, for the BC490L it will be in the range from 60 to 150.The complementary NPN transistor to the BC490 is the BC489.The FMMTA56 (SOT-23) and KST56 (SOT-23) is the SMD version of the BC490 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.