BC490A 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): 100 to 250
• Transition Frequency, min: 75 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC490A 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 BC490A transistor can have a current gain of 100 to 250. The gain of the BC490 will be in the range from 60 to 400, 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 BC490A is the BC489A.The 2SA1368 (SOT-89), 2SB805 (SOT-89), 2SD1006 (SOT-89), BCP53 (SOT-223), BCP53-16 (SOT-223), BCX53 (SOT-89), BCX53-16 (SOT-89), BSP33 (SOT-223), BSR33 (SOT-89), FMMTA56 (SOT-23), KST56 (SOT-23), MMBT4356 (SOT-23), MMBTA56 (SOT-23), PMBTA56 (SOT-23), PZTA56 (SOT-223) and SMBTA56 (SOT-23) is the SMD version of the BC490A transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.