2SC3902-S Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 160 V
• Collector-Base Voltage, max: 180 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 140 to 280
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126F

Here is an image showing the pin diagram of this transistor.The 2SC3902-S transistor can have a current gain of 140 to 280. The gain of the 2SC3902 will be in the range from 100 to 400, for the 2SC3902-R it will be in the range from 100 to 200, for the 2SC3902-T it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SC3902-S might only be marked "C3902-S".The complementary PNP transistor to the 2SC3902-S is the 2SA1507-S.You can replace the 2SC3902-S with the 2SC3117, 2SC3117-S or TTC004B.