KTC4375 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: 1.5 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 100 to 320
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The KTC4375 transistor can have a current gain of 100 to 320. The gain of the KTC4375O will be in the range from 100 to 200, for the KTC4375Y it will be in the range from 160 to 320.The complementary PNP transistor to the KTC4375 is the KTA1663.You can replace the KTC4375 with the 2SD1623 or 2SD1624.