KTC4378Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 150 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 KTC4378Y transistor can have a current gain of 100 to 200. The gain of the KTC4378 will be in the range from 100 to 320, for the KTC4378GR it will be in the range from 160 to 320.The KTC4378Y transistor is marked as "TY".The complementary PNP transistor to the KTC4378Y is the KTA1668Y.You can replace the KTC4378Y with the 2SC3444, BCX55, BCX55-16, BCX56, BCX56-16, BSR41 or BSR43.