KSC3073-Y 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): 120 to 240
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-251

Here is an image showing the pin diagram of this transistor.The KSC3073-Y transistor can have a current gain of 120 to 240. The gain of the KSC3073 will be in the range from 70 to 240, for the KSC3073-O it will be in the range from 70 to 140.The complementary PNP transistor to the KSC3073-Y is the KSA1243-Y.The KTC4375 (SOT-89) is the SMD version of the KSC3073-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSC3073-Y with the 2SD1802, 2SD1803, 2SD1804, KSC3074, KSC3074-Y or KTC2020L.