KTC2022D Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 130 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 5 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 30 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 KTC2022D transistor can have a current gain of 70 to 240. The gain of the KTC2022D-GR will be in the range from 120 to 240, for the KTC2022D-Y it will be in the range from 70 to 140.The complementary PNP transistor to the KTC2022D is the KTA1042D.The BDP955 (SOT-223) is the SMD version of the KTC2022D transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC2022D with the 2SD1257A.