KSA709Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -160 V
• Emitter-Base Voltage, max: -8 V
• Collector Current − Continuous, max: -0.7 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SA709Y transistor

The KSA709Y 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, base, and collector leads. The KSA709CY transistor (with suffix "C") is the center collector version of the KSA709Y.
Here is an image showing the pin diagram of this transistor.The KSA709Y transistor can have a current gain of 120 to 240. The gain of the KSA709 will be in the range from 70 to 400, for the KSA709G it will be in the range from 200 to 400, for the KSA709O it will be in the range from 70 to 140.The complementary NPN transistor to the KSA709Y is the KSC1009Y.The 2N5401S (SOT-23), DXT5401 (SOT-89), DZT5401 (SOT-223), KST5401 (SOT-23) and MMBT5401 (SOT-23) is the SMD version of the KSA709Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The 2SA709Y is the TO-92 version of the KSA709Y.You can replace the KSA709Y with the 2SA709 or 2SA709Y.