KTA1273O Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -30 V
• Collector-Base Voltage, max: -30 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -2 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SA1273-O transistor

The KTA1273O is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads.
Here is an image showing the pin diagram of this transistor.The KTA1273O transistor can have a current gain of 100 to 200. The gain of the KTA1273 will be in the range from 100 to 320, for the KTA1273Y it will be in the range from 160 to 320.The complementary NPN transistor to the KTA1273O is the KTC3205O.The 2SA1203 (SOT-89), 2SA1203-O (SOT-89), FMMT549 (SOT-23), KTA1663 (SOT-89) and KTA1663O (SOT-89) is the SMD version of the KTA1273O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The 2SA1273-O is the TO-92 version of the KTA1273O.You can replace the KTA1273O with the 2SA1020, 2SA1273, 2SA1273-O, 2SA928A, 2SA928A-O, 2SB1229, 2SB1229-R, 2SB892, 2SB892-R, 2SB985, 2SB985R, KSA928A, KSA928A-O, KTA1281, KTA1282, KTA1282O, STB1277 or STB1277-O.