KTC2027-Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 25 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 KTC2027-Y transistor can have a current gain of 120 to 240. The gain of the KTC2027 will be in the range from 70 to 240, for the KTC2027-O it will be in the range from 70 to 140.The BDP951 (SOT-223) is the SMD version of the KTC2027-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC2027-Y with the 2SC1827, 2SC1986, 2SC2075, 2SC2334, 2SC2334K, 2SC3258, 2SC3258-Y, 2SC3308, 2SC3308-Y, 2SC3346, 2SC3346-Y, 2SC3540, 2SC3540-Y, 2SC3710, 2SC3710-Y, 2SC3710A, 2SC3710A-Y, 2SC3851A, 2SC4007, 2SC4008, 2SD1267A, 2SD1267A-P, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1355, 2SD1355-Y, 2SD1356, 2SD1356-Y, 2SD1362, 2SD1362-Y, 2SD1407, 2SD1407-Y, 2SD1407A, 2SD1407A-Y, 2SD1408, 2SD1408-Y, 2SD1411, 2SD1411-Y, 2SD1411A, 2SD1411A-Y, 2SD2059, 2SD2059-Y, 2SD2060, 2SD2060-Y, 2SD363, 2SD363-Y, 2SD525, 2SD525-Y, 2SD526, 2SD526-Y, 2SD613, 2SD772, 2SD792, 2SD823, 2SD857A, 2SD857A-P, 2SD866, 2SD866A, BD243B, BD243C, BD537, BD539B, BD539C, BD539D, BD543B, BD543C, BD545B, BD545C, BD799, BD801, BD809, BD951, BD953, BD955, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, D44H11, D44H11FP, KSC2334, KSC2334Y, KSD1408, KSD1408-Y, KSD363, KSD363-Y, KSD526, KSD526-Y, KTC2018, KTC2018-Y, KTC2028, KTC2028Y, KTD2059, KTD2059Y, KTD2060, KTD2060Y, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF15030, MJF15030G, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E, TIP42F or TTC3710B.