2SC3858-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 200 V
• Collector-Base Voltage, max: 200 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 17 A
• Collector Dissipation: 200 W
• DC Current Gain (h_fe): 50 to 100
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: MT-200

Here is an image showing the pin diagram of this transistor.The 2SC3858-O transistor can have a current gain of 50 to 100. The gain of the 2SC3858 will be in the range from 50 to 180, for the 2SC3858-P it will be in the range from 70 to 140, for the 2SC3858-Y it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SC3858-O might only be marked "C3858-O".The complementary PNP transistor to the 2SC3858-O is the 2SA1494-O.You can replace the 2SC3858-O with the 2SC2774, 2SC2774-O, 2SC3264 or 2SC3264-O.