AZ431AZ-BTRE1

Overview

The AZ431AZ-BTRE1 is a three-terminal adjustable precision shunt regulator from the AZ431-B series, manufactured by Diodes Incorporated. It provides a programmable output voltage ranging from 2.5V to 18V with a typical low temperature deviation of 4.5mV and a full-range temperature coefficient of 20PPM/°C. The device features a sink current capacity between 1mA and 100mA and operates within an ambient temperature range of -40°C to +125°C. Packaged in TO-92 with tape and reel delivery, it offers high stability under capacitive loads and serves as a precise reference for various electronic circuits.

Feature Summary

• Programmable precise output voltage capability spanning from 2.5V up to 18V
• Guaranteed thermal stability over the complete operating temperature range
• Low equivalent full-range temperature coefficient ensuring consistent performance
• High stability characteristics when driving capacitive loads

Applications

• Charger circuits
• Voltage adapters
• Switching power supplies
• Graphic cards
• Precision voltage references

Procurement Notes

Verify that the ordering suffix BTRE1 corresponds specifically to the TO-92 package configuration supplied in tape and reel format. Confirm the B suffix indicates the 0.8% voltage tolerance variant rather than the 0.4% option. Ensure the component meets RoHS compliance standards as specified in the manufacturer's documentation before finalizing procurement specifications.

Selection Notes

Select this component when a three-terminal adjustable shunt regulator is required for applications demanding high thermal stability and low temperature drift. The TO-92 package is suitable for through-hole mounting requirements. Consider the 18V maximum cathode voltage limit and the 100mA sink current capacity to ensure the device operates within its recommended electrical boundaries for the intended circuit design.

Part Context

This part belongs to the AZ431-B series of adjustable precision shunt regulators designed to replace Zener diodes in switching power supplies and chargers. The series includes variants with different voltage tolerances and package options such as SOT-23, SOT-89, and TO-92. The AZ431-B designation specifically denotes a maximum cathode voltage rating of 20V, distinguishing it from other series members.

Replacement Considerations

Compatible substitutes include AZ431AN-BTRE1 for 0.4% tolerance or AZ431BZ-BTRE1 for bulk packaging alternatives within the same series. Verify pinout compatibility and thermal resistance values when transitioning between package types like SOT-23 or SOT-89 to ensure proper heat dissipation and circuit functionality.

FAQ

What is the maximum cathode voltage rating for the AZ431-B series?

The maximum cathode voltage rating for the AZ431-B series is 20V.

How does the B suffix affect the voltage tolerance compared to the A suffix?

The B suffix indicates a voltage tolerance of 0.8%, whereas the A suffix indicates a tighter tolerance of 0.4%.