KSD1406-G Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 150 to 300
• Transition Frequency, min: 3 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F
• Electrically Similar to the Popular 2SD1406-G transistor

Here is an image showing the pin diagram of this transistor.The KSD1406-G transistor can have a current gain of 150 to 300. The gain of the KSD1406 will be in the range from 60 to 300, for the KSD1406-O it will be in the range from 60 to 120, for the KSD1406-Y it will be in the range from 100 to 200.The BDP949 (SOT-223) and FZT692B (SOT-223) is the SMD version of the KSD1406-G transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSD1406-G with the 2SC1826, 2SC1985, 2SC1986, 2SC2075, 2SC3179, 2SC3851, 2SC3851A, 2SC4007, 2SC4008, 2SC4550, 2SC4550-L, 2SC4551, 2SC4551-L, 2SC4552, 2SC4552-L, 2SD1134, 2SD1266, 2SD1266A, 2SD1274, 2SD1274A, 2SD1274B, 2SD1354, 2SD1354-GR, 2SD1406, 2SD1406-G, 2SD1761, 2SD2012, 2SD2061, 2SD2394, 2SD313, 2SD613, 2SD823, 2SD880, 2SD880GR, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD797, BD799, BD801, BD807, BD809, BD949, BD951, BD953, BD955, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, D44H11, D44H11FP, D44H8, KSD2012, KSD2012-G, KSD2058, KSD2058-G, KSD880, KSD880-G, KTC2016, KTC2016-GR, KTC2026, KTC2026-GR, KTC2026GR, KTD1351, KTD1351GR, MJE15028, MJE15028G, TIP41D or TIP42D.