2SC2706-Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 140 V
• Collector-Base Voltage, max: 140 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 10 A
• Collector Dissipation: 100 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 90 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SC2706-Y transistor can have a current gain of 120 to 240. The gain of the 2SC2706 will be in the range from 55 to 240, for the 2SC2706-O it will be in the range from 80 to 160, for the 2SC2706-R it will be in the range from 55 to 110.Sometimes the "2S" prefix is not marked on the package - the 2SC2706-Y might only be marked "C2706-Y".The complementary PNP transistor to the 2SC2706-Y is the 2SA1146-Y.You can replace the 2SC2706-Y with the 2SC2581 or 2SC4278.