2SC2271 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 300 V
• Collector-Base Voltage, max: 300 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 40 to 200
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92

The 2SC2271 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 emitter, collector, and base leads.
Here is an image showing the pin diagram of this transistor.The 2SC2271 transistor can have a current gain of 40 to 200. The gain of the 2SC2271-C will be in the range from 40 to 80, for the 2SC2271-D it will be in the range from 60 to 120, for the 2SC2271-E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SC2271 might only be marked "C2271".The PMBTA42 (SOT-23) is the SMD version of the 2SC2271 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC2271 with the 2N6517C, 2SC3468, KSC1506 or KSC2330.