TL431KA-TP

Overview

The TL431KA-TP is a programmable precision shunt voltage reference manufactured by Micro Commercial Components (MCC). It operates within a cathode-to-anode voltage range of up to 36 V and provides an adjustable output voltage starting from a minimum fixed reference of 2.495 V. The device supports a continuous cathode current of 1 mA and delivers a maximum output current of 100 mA. It features a tight tolerance of ±0.5% and a temperature coefficient of 50 ppm/°C. Designed for surface-mount applications, it is housed in a compact SOT-23 package and functions reliably across an extended operating temperature range of -40°C to 125°C.

Feature Summary

• Provides programmable output voltage capability with high precision regulation
• Ensures thermal stability over a wide industrial temperature range
• Delivers low dynamic output impedance for stable reference performance

Applications

• Shunt regulator circuits
• Series regulator configurations
• Switching regulator feedback loops
• Voltage reference sources

Procurement Notes

Verify the specific suffix KA against the manufacturer's official datasheet to confirm the exact tolerance grade and temperature rating. Ensure the ordering quantity aligns with the standard reel packaging specifications provided by MCC. Cross-reference the component marking code on the physical device with the datasheet documentation to authenticate the part before integration into production assemblies.

Selection Notes

Select this component when a precise, adjustable voltage reference is required in a small surface-mount footprint. The SOT-23 package suits space-constrained designs. Consider the ±0.5% tolerance and 50 ppm/°C temperature coefficient for accuracy requirements. Verify that the 100 mA sink current capability meets the load demands of the target application circuit design.

Part Context

This component belongs to the TL431 family of three-terminal adjustable regulators known for guaranteed thermal stability. The KA variant specifically denotes a defined tolerance level within the MCC product line. It serves as a direct replacement for legacy through-hole versions in modern surface-mount power management designs requiring reliable voltage referencing.

Replacement Considerations

TL431KB-TP and TS431BCX are documented parameter-equivalent alternatives.