KTA1704 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: -1.2 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 100 to 320
• Transition Frequency, min: 110 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The KTA1704 transistor can have a current gain of 100 to 320. The gain of the KTA1704-GR will be in the range from 160 to 320, for the KTA1704-Y it will be in the range from 100 to 200.The complementary NPN transistor to the KTA1704 is the KTC2803.The 2SB806 (SOT-89) and 2SD1007 (SOT-89) is the SMD version of the KTA1704 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KTA1704 with the 2SA1021, 2SA1220, 2SA1220A, 2SA1249, 2SA1507, 2SB649, KSA1220 or KSA1220A.