KA431AZTA

Overview

The KA431AZTA is a programmable shunt regulator manufactured by onsemi, housed in a TO-92-3 Kinked Lead package. It features an adjustable output voltage range up to 36 V with an initial accuracy of 1%. The device supports a cathode current range from 1 mA to 100 mA and operates within a temperature range of -25 C to +85 C. It has a maximum reference input voltage of 37 V and a temperature coefficient of 50 PPM / C.

Feature Summary

• Programmable shunt regulation capability over a wide voltage range
• Precision voltage reference with defined initial accuracy tolerance
• Robust cathode current handling for stable operation under varying loads

Applications

• Voltage reference circuits requiring precise shunt regulation
• Power supply feedback loops for voltage stabilization
• Comparator applications utilizing the internal reference threshold

Procurement Notes

Verify component status as the KA431AZTA is listed as End-of-Life (EOL) by the manufacturer. Confirm availability through authorized distributors or check for active replacement parts such as the TL431AILPG. Ensure that any substitute components meet the required electrical specifications and package compatibility before integration into designs.

Selection Notes

Select this component when a through-hole programmable shunt regulator is required with specific accuracy constraints. Consider the TO-92-3 package for manual assembly or prototyping environments. Evaluate the thermal performance within the specified operating temperature range to ensure reliability in the target application environment.

Part Context

The KA431 series belongs to onsemi's portfolio of precision voltage references. These devices serve as alternatives to traditional Zener diodes, offering superior stability and lower dynamic impedance. The KA431AZTA specifically denotes the A-grade variant with 1% initial accuracy in a standard through-hole package.

Replacement Considerations

The TL431AILPG is identified as a potential substitute part number.