AZ431BZ-ATRG1

Overview

The AZ431BZ-ATRG1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides an internal reference voltage of 2.5V with a tolerance of ±0.8%. The device supports programmable output voltages ranging from 2.5V to 36V and operates within a cathode current range of 1mA to 100mA. It features a typical temperature coefficient of 20PPM/°C and low output noise. The component is housed in a TO92 package and supplied in Ammo packing.

Feature Summary

• Offers sharp turn-on characteristics and guaranteed thermal stability across the full operating range.
• Features high stability under capacitive loads, making it suitable for demanding power supply applications.
• Provides low equivalent full-range temperature deviation and low dynamic output impedance.

Applications

• Charger
• Voltage Adapter
• Switching Power Supply
• Graphic Card
• Precision Voltage Reference

Procurement Notes

Verify that the specific part number matches the required 0.8% voltage tolerance and TO92 package configuration. Confirm the packaging type is Ammo rather than Bulk or Tape & Reel. Ensure the procurement channel is authorized to guarantee compliance with RoHS and Green material standards as specified by the manufacturer.

Selection Notes

Select this component when a precise shunt regulator with ±0.8% accuracy is required instead of the tighter ±0.4% variant. Consider the TO92 through-hole package for designs requiring higher thermal resistance or mechanical robustness compared to surface-mount options. Verify that the maximum cathode voltage rating of 36V aligns with the system's power supply constraints.

Part Context

This device belongs to the AZ431-A family of adjustable precision shunt regulators. It serves as a direct replacement for Zener diodes in various circuit topologies. The product line includes variants with different voltage tolerances (0.4% and 0.8%) and multiple package options including SOT23, SOT89, and TO92 to accommodate diverse design requirements.

Replacement Considerations

AZ431BZ-ATRE1

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is typically 1mA, though it can operate down to 0.4mA depending on specific conditions.

Is the AZ431BZ-ATRG1 compliant with environmental directives?

Yes, the device is lead-free, halogen-free, antimony-free, and fully compliant with RoHS 3 directives.