KTC2803 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 120 V
• Collector-Base Voltage, max: 120 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1.2 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 100 to 320
• Transition Frequency, min: 110 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The KTC2803 transistor can have a current gain of 100 to 320. The gain of the KTC2803-GR will be in the range from 160 to 320, for the KTC2803-Y it will be in the range from 100 to 200.The complementary PNP transistor to the KTC2803 is the KTA1704.The FMMT624 (SOT-23) and FMMT625 (SOT-23) is the SMD version of the KTC2803 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC2803 with the 2SC2481, 2SC2690, 2SC2690A, 2SC3117, 2SC3902, 2SD669, KSC2690 or KSC2690A.