AZ431LBKTR-E1

Overview

The AZ431LBKTR-E1 is an adjustable precision shunt voltage reference manufactured by Diodes Incorporated. It operates within a programmable output voltage range of 1.24 V to 18 V. The device features an initial accuracy of 1% and a maximum temperature coefficient of 20 PPM/°C. It supports a maximum cathode current of 100 mA with a minimum operating current of 100 µA. The component is housed in a surface-mount SOT-23 package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides precise, adjustable reference voltage via external resistors
• Ensures thermal stability over the full industrial temperature range
• Offers high stability under capacitive load conditions

Applications

• Switching power supply regulation
• Battery charger circuits
• Motherboard voltage monitoring

Procurement Notes

Verify end-of-life status before finalizing designs, as this specific suffix variant may be discontinued or subject to production phase-out notices. Confirm RoHS compliance details through official datasheets. Ensure sourcing channels are authorized to guarantee authenticity. Check for active replacement part numbers if long-term availability is required for mass production.

Selection Notes

Select this component when a low-voltage, high-precision shunt regulator is needed in a compact SOT-23 footprint. The 1% tolerance suits applications requiring tighter accuracy than standard Zener diodes. Consider the 100 mA sink capability for driving indicator LEDs or biasing other circuit stages directly.

Part Context

This part belongs to the AZ431L series of three-terminal adjustable regulators. It serves as a direct substitute for traditional Zener diodes in precision applications. The series is designed to replace less stable references while maintaining compatibility with existing circuit topologies that utilize two-terminal voltage references.

Replacement Considerations

AZ431LBKTR-G1 is listed as a potential manufacturer alternative.