AJZ431AN-BTRG1

Overview

The AJZ431AN-BTRG1 is an adjustable shunt voltage reference integrated circuit manufactured by Diodes Incorporated. It operates within a cathode voltage range of 2.5V to 36V and provides an initial accuracy of ±0.4%. The device supports a maximum output current of 100mA and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount format, it utilizes a standard three-terminal configuration for easy integration into space-constrained designs.

Feature Summary

• Adjustable output voltage capability spanning 2.5V to 36V via external resistor network
• High precision performance with ±0.4% initial accuracy tolerance
• Robust thermal stability over industrial temperature ranges (-40°C to +125°C)
• Compact SOT-23-3 surface-mount package design for efficient PCB layout

Applications

• Precision portable equipment power supplies
• Battery-powered instrumentation circuits
• Linear regulator reference sources
• Current limiting control loops

Procurement Notes

Verify the specific suffix 'B' against official Diodes Incorporated documentation to confirm exact binning or testing criteria, as suffixes often denote specific manufacturing lots or quality grades. Ensure the ordering part number matches the required tolerance and package variant precisely. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when high accuracy is required in a minimal footprint. The ±0.4% tolerance suits applications demanding tight voltage regulation without complex calibration. The SOT-23-3 package facilitates automated assembly. Consider the 100mA drive capability for load requirements. Verify that the 36V maximum cathode voltage aligns with the system's supply rails to ensure safe operation under all transient conditions.

Part Context

This device belongs to the AZ431 family of adjustable shunt regulators, widely used as voltage references in analog and mixed-signal circuits. The AJZ431AN-BTRG1 variant specifically denotes the Diodes Incorporated branded version with the B-trim accuracy grade. It serves as a cost-effective alternative to fixed voltage references, offering flexibility through external resistor setting while maintaining high precision and low temperature drift characteristics typical of bandgap reference architectures.

Replacement Considerations

Direct pin-compatible substitutes include the AZ431AN series from other manufacturers. Verify that replacement parts maintain the ±0.4% accuracy and 36V rating. Check for identical SOT-23-3 footprint dimensions to ensure mechanical fit. Confirm that thermal resistance and operating temperature ranges match the original design constraints.