KTA1661O Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.8 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 80 to 160
• 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 KTA1661O transistor can have a current gain of 80 to 160. The gain of the KTA1661 will be in the range from 80 to 240, for the KTA1661Y it will be in the range from 120 to 240.The KTA1661O transistor is marked as "DO".The complementary NPN transistor to the KTA1661O is the KTC4373O.You can replace the KTA1661O with the 2SA1201 or 2SA1201-O.