KTC3227 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.4 A
• Collector Dissipation: 1 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-92MOD

Here is an image showing the pin diagram of this transistor.The KTC3227 transistor can have a current gain of 70 to 240. The gain of the KTC3227O will be in the range from 70 to 140, for the KTC3227Y it will be in the range from 120 to 240.The complementary PNP transistor to the KTC3227 is the KTA1274.The 2SC4209 (SOT-23) and KTC4374 (SOT-89) is the SMD version of the KTC3227 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTC3227 with the 2SC1627A, 2SC2274K, 2SC2383, 2SC3228, 2SC3244, 2SC3328, 2SD438, 2SD667, KSC1009C, KSC2383 or KTC3228.