2SC1843F Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.25 W
• DC Current Gain (h_fe): 300 to 600
• Transition Frequency, min: 250 MHz
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92

The 2SC1843F 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 2SC1843F transistor can have a current gain of 300 to 600. The gain of the 2SC1843 will be in the range from 200 to 800, for the 2SC1843E it will be in the range from 400 to 800, for the 2SC1843P it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SC1843F might only be marked "C1843F".The complementary PNP transistor to the 2SC1843F is the 2SA990F.The 2SC1623 (SOT-23), 2SC1623-L7 (SOT-23), KSC1623 (SOT-23), KSC1623-L (SOT-23), KST2484 (SOT-23) and PMBT6428 (SOT-23) is the SMD version of the 2SC1843F transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC1843F with the 2SC1570, 2SC1815, 2SC1844, 2SC1844F, 2SC2396, 2SC2458, 2SC2458-BL, 2SC2543, 2SC2545, 2SC2546, 2SC2634, 2SC2785, 2SC2785-KF, 2SC3198, 2SC3198-BL, 2SC3199, 2SC3199-BL, 2SC3329, 2SC3330, 2SC3331, 2SC3916, 2SC3917, 2SC3918, 2SC3919, 2SC3920, 2SC3921, 2SC3922, 2SC3923, 2SC945, 2SC945K, 2SD1616, 2SD1616-U, 2SD1616A-U, 2SD789, BC182LB, C1815, C945, H945, H945-K, KSC1815, KSC945C, KSD1616, KSD1616-L, KTC1006, KTC3198, KTC3198BL, KTC3199 or KTC3199BL.