2SC2001 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 25 V
• Collector-Base Voltage, max: 30 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.7 A
• Collector Dissipation: 0.6 W
• DC Current Gain (h_fe): 90 to 400
• Transition Frequency, min: 170 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SC2001 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 2SC2001 transistor can have a current gain of 90 to 400. The gain of the 2SC2001-K will be in the range from 200 to 400, for the 2SC2001-L it will be in the range from 135 to 270, for the 2SC2001-M it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SC2001 might only be marked "C2001".The 2SC2859 (SOT-23), 2SC4118 (SOT-323), KTC3876 (SOT-23) and KTC3876S (SOT-23) is the SMD version of the 2SC2001 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC2001 with the 2SD471 or 2SD545.