2SC3709 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 12 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 90 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.The 2SC3709 transistor can have a current gain of 70 to 240. The gain of the 2SC3709-O will be in the range from 70 to 140, for the 2SC3709-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC3709 might only be marked "C3709".The complementary PNP transistor to the 2SC3709 is the 2SA1451.You can replace the 2SC3709 with the 2SC3345, 2SC3346, 2SC3709A, 2SC3710, 2SC3710A, 2SD1062, 2SD1669, BD545A, BD545B, BD545C, BDT81, BDT81F, BDT83, BDT83F, BDT85 or BDT85F.