2SC2078 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 75 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 25 to 200
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SC2078 transistor can have a current gain of 25 to 200. The gain of the 2SC2078B will be in the range from 25 to 50, for the 2SC2078C it will be in the range from 40 to 80, for the 2SC2078D it will be in the range from 60 to 120, for the 2SC2078E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SC2078 might only be marked "C2078".You can replace the 2SC2078 with the 2SC2075, 2SD1274, 2SD1274A, 2SD1274B, 2SD772, 2SD792, 2SD823, BD241B, BD241C, BDT93, BDT93F, BDT95, BDT95F, TIP41D, TIP41E, TIP42D or TIP42E.