2SC3073-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 30 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 70 to 140
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-252

Here is an image showing the pin diagram of this transistor.The 2SC3073-O transistor can have a current gain of 70 to 140. The gain of the 2SC3073 will be in the range from 70 to 240, for the 2SC3073-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC3073-O might only be marked "C3073-O".The complementary PNP transistor to the 2SC3073-O is the 2SA1243-O.You can replace the 2SC3073-O with the 2SC3074, 2SC3074-O, 2SD1221, 2SD1252, 2SD1252-Q, 2SD1253 or 2SD1253-Q.