KTC2018-Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 5 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 30 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.The KTC2018-Y transistor can have a current gain of 120 to 240. The gain of the KTC2018 will be in the range from 70 to 240, for the KTC2018-O it will be in the range from 70 to 140.The complementary PNP transistor to the KTC2018-Y is the KTA1038-Y.The BDP953 (SOT-223) is the SMD version of the KTC2018-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC2018-Y with the 2SC2334, 2SC2334K, 2SD1355, 2SD1355-Y, 2SD1407, 2SD1407-Y, 2SD1407A, 2SD1407A-Y, 2SD2059, 2SD2059-Y, 2SD363, 2SD363-Y, 2SD525, 2SD525-Y, 2SD772, 2SD772A, 2SD792, 2SD792A, 2SD866A, BD243C, BD539C, BD539D, BD543C, BD545C, BD801, BD953, BD955, BDT85, BDT85F, BDT87, BDT87F, KSC2334, KSC2334Y, KSD363, KSD363-Y, KTC2028, KTC2028Y, KTD2059, KTD2059Y, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF15030, MJF15030G, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E or TIP42F.