KTA1660 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -150 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 120 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 KTA1660 transistor can have a current gain of 70 to 240. The gain of the KTA1660O will be in the range from 70 to 140, for the KTA1660Y it will be in the range from 120 to 240.The complementary NPN transistor to the KTA1660 is the KTC4372.You can replace the KTA1660 with the BF621, BF623 or DXT5401.