LM431AIZ/LFT1

Voltage Reference Overview

The LM431AIZ/LFT1 is a precision shunt adjustable voltage reference manufactured by Texas Instruments. It operates within an output voltage range of 2.495 V to 37 V and supports a maximum shunt current of 100 mA. The device features an initial accuracy of 2% and a temperature coefficient of 97 ppm/°C. It is housed in a TO-92-3 through-hole package and functions across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides precise shunt regulation with adjustable output voltage capability
• Ensures stable performance across industrial temperature ranges
• Offers high accuracy for sensitive reference applications

Voltage Reference Applications

• Precision power supply regulation
• Voltage monitoring circuits
• Portable equipment power management

Voltage Reference Procurement Notes

Verify the specific suffix LFT1 against official Texas Instruments documentation to confirm packaging details such as cut tape or reel configuration. Ensure the component meets RoHS requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and lead times before finalizing procurement plans.

Voltage Reference Selection Notes

Select this component when a through-hole solution is required for adjustable voltage referencing. The 2% initial accuracy suits general-purpose applications, while the 100 mA current capacity allows for moderate load driving. Consider the TO-92-3 package constraints for PCB layout and thermal dissipation needs compared to surface-mount alternatives.

Voltage Reference Part Context

This device belongs to the LM431 series of adjustable shunt regulators. It serves as a direct replacement for standard Zener diodes in many circuit designs, offering superior temperature stability and lower dynamic impedance. The family includes various packages and accuracy grades to support diverse power management requirements.

Voltage Reference Replacement Considerations

Check for LM431AIZ/NOPB as a potential equivalent from the same manufacturer. Verify pinout compatibility and electrical specifications against legacy TL431 variants if substituting in existing designs.