2SC1841 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 120 V
• Collector-Base Voltage, max: 120 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.05 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 200 to 1200
• Transition Frequency, min: 110 MHz
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92

The 2SC1841 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 2SC1841 transistor can have a current gain of 200 to 1200. The gain of the 2SC1841E will be in the range from 400 to 800, for the 2SC1841F it will be in the range from 300 to 600, for the 2SC1841P it will be in the range from 200 to 400, for the 2SC1841U it will be in the range from 600 to 1200.Sometimes the "2S" prefix is not marked on the package - the 2SC1841 might only be marked "C1841".The FJV1845 (SOT-23) is the SMD version of the 2SC1841 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC1841 with the 2SC1845, 2SC2784 or KSC1845.