AS431HBZTR-G1

Overview

The AS431HBZTR-G1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within a cathode voltage range of 2.495V to 36V and supports a sink current capacity from 0.5mA to 100mA. The device features a typical temperature coefficient of 20PPM/°C and an initial voltage tolerance of 1.0%. It is housed in a TO-92 package with Ammo packing, designed for through-hole mounting. The component functions reliably across an ambient temperature range of -40°C to +125°C.

Feature Summary

• Programmable precise output voltage ranging from the internal reference level up to the maximum cathode voltage limit
• High stability under capacitive load conditions ensuring reliable operation without oscillation
• Low equivalent full-range temperature coefficient providing consistent performance across wide thermal variations

Applications

• Switching power supplies
• Chargers
• Voltage adapters
• Graphic cards
• Precision voltage references

Procurement Notes

Verify that the specific ordering suffix matches the required package type and pin-out configuration. Confirm the voltage tolerance designation aligns with circuit accuracy requirements. Ensure the procurement channel provides genuine components to maintain compliance with RoHS and Green material specifications. Cross-reference the datasheet revision date against manufacturing lot codes to verify production standards.

Selection Notes

Select this component when a through-hole adjustable shunt regulator is required for high-temperature environments. The 1.0% tolerance suits applications where moderate precision is sufficient. Consider the TO-92 package dimensions for board layout constraints. Evaluate the 100mA sink current capability against peak load demands to ensure adequate headroom during transient states.

Part Context

This part belongs to the AS431H family of adjustable precision shunt regulators. It serves as a direct replacement for standard Zener diodes in regulation circuits. The series offers both normal and mirror pin-out options in SOT23 packages, while the TO-92 variant provides robust mechanical stability for industrial applications requiring higher thermal dissipation capabilities.

Replacement Considerations

AS431HAZTR-G1

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is specified as 0.5mA at the reference voltage.

Is the device compatible with capacitive loads?

Yes, the AS431H is designed for high stability under capacitive load conditions.