2SC979-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 70 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.3 W
• DC Current Gain (h_fe): 70 to 140
• Transition Frequency, min: 250 MHz
• Operating and Storage Junction Temperature Range: -65 to +175 °C
• Package: TO-18

Here is an image showing the pin diagram of this transistor.The 2SC979-O transistor can have a current gain of 70 to 140. The gain of the 2SC979 will be in the range from 70 to 240, for the 2SC979-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC979-O might only be marked "C979-O".The complementary PNP transistor to the 2SC979-O is the 2SA499-O.You can replace the 2SC979-O with the 2SC979A.