KA431LDTF

Overview

The KA431LDTF is a programmable shunt voltage reference manufactured by onsemi, housed in an 8-SOIC package. It functions as an adjustable voltage reference with a maximum output voltage of 2.55 V and an initial accuracy of 0.5%. The device supports a maximum output current of 100 mA and operates within a temperature range of -25°C to +85°C.

Feature Summary

• Provides precise programmable shunt regulation for stable voltage referencing applications
• Offers high initial accuracy of 0.5% for reliable performance in sensitive circuits
• Designed for through-hole or surface-mount integration via the 8-SOIC form factor

Applications

• Precision voltage regulation in power supply feedback loops
• Reference voltage generation for analog-to-digital converters
• Over-voltage protection circuitry requiring accurate threshold detection

Procurement Notes

Verify component authenticity through authorized onsemi distributors due to availability constraints. Confirm package integrity and pin alignment against the 8-SOIC specification before integration. Check for obsolescence status and lead times with suppliers, as this part may be discontinued or limited in stock. Ensure storage conditions maintain moisture sensitivity levels appropriate for surface-mount devices.

Selection Notes

Select the KA431LDTF when 0.5% accuracy and 100 mA sink capability are required in an 8-pin SOIC footprint. Compare against standard KA431 variants if tighter tolerance or different packaging is needed. Consider thermal performance within the -25°C to +85°C range for your specific operating environment.

Part Context

This component belongs to onsemi's KA431 family of programmable shunt regulators, widely used in power management ICs. The LDTF suffix denotes the specific 8-SOIC package variant. It serves as a cost-effective solution for replacing Zener diodes in precision regulation tasks where adjustable thresholds are necessary.

Replacement Considerations

NCV431AIDR2G is listed as a similar available alternative. Verify pin compatibility and electrical specifications before substitution.