KSC1173 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 30 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220
• Electrically Similar to the Popular 2SC1173 transistor

Here is an image showing the pin diagram of this transistor.The KSC1173 transistor can have a current gain of 70 to 240. The gain of the KSC1173O will be in the range from 70 to 140, for the KSC1173Y it will be in the range from 120 to 240.The complementary PNP transistor to the KSC1173 is the KSA473.You can replace the KSC1173 with the 2SC1061, 2SC1173, 2SC1826, 2SC1985, 2SC2562, 2SC3179, 2SC3239, 2SC3252, 2SC3253, 2SC3254, 2SC3255, 2SC3297, 2SC3299, 2SC3345, 2SC3709, 2SC3709A, 2SC3746, 2SC3747, 2SC3748, 2SC3851, 2SC4935, 2SC790, 2SD1061, 2SD1062, 2SD1133, 2SD1134, 2SD1212, 2SD1235, 2SD1266, 2SD1267, 2SD1354, 2SD1363, 2SD1406, 2SD1412, 2SD1444A, 2SD1666, 2SD1667, 2SD1668, 2SD1669, 2SD1761, 2SD1762, 2SD1913, 2SD234, 2SD235, 2SD2374, 2SD288, 2SD313, 2SD553, 2SD795, 2SD856, 2SD857, 2SD880, BD201, BD203, BD241, BD241A, BD243, BD243A, BD301, BD303, BD533, BD535, BD539, BD539A, BD543, BD543A, BD545, BD545A, BD735, BD737, BD795, BD797, BD807, BD933, BD933F, BD935, BD935F, BD949, BDT81, BDT81F, D44H8, KSD1406, KSD2058, KSD288, KSD880, KTC3230, KTC4369 or KTD1351.