2SC3478 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 180 V
• Collector-Base Voltage, max: 200 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.75 W
• DC Current Gain (h_fe): 135 to 600
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SC3478 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 2SC3478 transistor can have a current gain of 135 to 600. The gain of the 2SC3478-K will be in the range from 200 to 400, for the 2SC3478-L it will be in the range from 135 to 270, for the 2SC3478-U it will be in the range from 300 to 600.Sometimes the "2S" prefix is not marked on the package - the 2SC3478 might only be marked "C3478".The complementary PNP transistor to the 2SC3478 is the 2SA1376.