2SC1844E Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 400 to 800
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92

The 2SC1844E 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 2SC1844E transistor can have a current gain of 400 to 800. The gain of the 2SC1844 will be in the range from 200 to 800, for the 2SC1844F it will be in the range from 300 to 600, for the 2SC1844P it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SC1844E might only be marked "C1844E".The complementary PNP transistor to the 2SC1844E is the 2SA991E.The KST2484 (SOT-23) is the SMD version of the 2SC1844E transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC1844E with the 2SC2396, 2SC2396-E, 2SC2543, 2SC2543-E, 2SC2544, 2SC2544-E, 2SC2545, 2SC2545-E, 2SC2546, 2SC2546-E, 2SC2547, 2SC2547-E, 2SC3245, 2SC3245-G or KTC1006.