KA431LZTF

Overview

The KA431LZTF is a programmable shunt regulator manufactured by onsemi, designed for precision voltage reference applications. It operates within a temperature range of -25°C to +85°C and utilizes a TO-92-3 Kinked Lead through-hole package. The device features an initial accuracy of 0.5% and a temperature coefficient of 50 PPM/°C. It supports a maximum input voltage of 37 V and handles a maximum shunt current of 100 mA with a minimum operating current of 1 mA. The output voltage is adjustable, allowing flexibility in circuit design.

Feature Summary

• Provides precise voltage regulation with high initial accuracy suitable for demanding applications
• Offers adjustable output voltage capability using external resistors
• Features robust thermal stability across a wide operating temperature range

Applications

• Precision voltage references in power supply circuits
• Programmable linear regulators
• Battery chargers requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'L' indicates the 0.5% accuracy grade, as standard variants may differ. Confirm the TO-92-3 Kinked Lead package matches your PCB footprint requirements. Check for end-of-life status or discontinuation notices from onsemi before finalizing designs. Ensure RoHS compliance documentation is available for regulatory adherence. Validate that the 37 V maximum input rating exceeds your circuit's peak voltage.

Selection Notes

Select this component when higher initial accuracy than the standard KA431 is required. The TO-92 package is suitable for through-hole assembly processes. Consider the 50 PPM/°C temperature coefficient for thermal environment constraints. Compare against KA431ZTF if lower accuracy is acceptable for cost reduction. Ensure the 100 mA shunt current capability meets load requirements.

Part Context

The KA431 series represents a family of programmable shunt regulators widely used in analog and mixed-signal circuits. The KA431LZTF variant specifically denotes the low-drift, high-accuracy version within this lineup. It serves as a critical reference element in feedback loops for switching and linear regulators. The component is part of onsemi's broader portfolio of power management integrated circuits.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.