KTC2027 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): 70 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 transistor can have a current gain of 70 to 240. The gain of the KTC2027-O will be in the range from 70 to 140, for the KTC2027-Y it will be in the range from 120 to 240.The BDP951 (SOT-223) is the SMD version of the KTC2027 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC2027 with the 2SC1827, 2SC1986, 2SC2075, 2SC2334, 2SC3258, 2SC3308, 2SC3346, 2SC3540, 2SC3710, 2SC3710A, 2SC3851A, 2SD1267A, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1355, 2SD1356, 2SD1362, 2SD1407, 2SD1407A, 2SD1408, 2SD1411, 2SD1411A, 2SD2059, 2SD2060, 2SD363, 2SD525, 2SD526, 2SD613, 2SD772, 2SD792, 2SD823, 2SD857A, 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, KSD1408, KSD363, KSD526, KTC2018, KTC2028, KTD2059, KTD2060, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF15030, MJF15030G, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E or TIP42F.