AP431SAZTR-G1

Voltage Reference Overview

The AP431SAZTR-G1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within a cathode voltage range of 2.5V to 36V and provides an initial voltage tolerance of ±0.5% at +25°C. The device features a low minimum cathode current for regulation, with a typical value of 50µA and a maximum of 100µA. It supports a sink current capacity from 100µA to 100mA and maintains stability under capacitive loads. The component is housed in a TO-92 package with ammo packing and functions across a wide operating temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Low minimum cathode current for regulation enables operation in very low power dissipation applications
• Programmable precise output voltage allows setting values between the reference voltage and the maximum cathode voltage
• High stability under capacitive load conditions ensures reliable performance in various circuit configurations

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the specific part number matches the required package type and tolerance grade. Confirm compliance with RoHS 3 and REACH regulations if environmental standards are mandatory for the target application. Ensure the ordering suffix corresponds to the correct packaging format, as variations exist between tape and reel or ammo packing options.

Voltage Reference Selection Notes

Select this component when a low-power adjustable shunt regulator is required to replace Zener diodes. The low minimum cathode current makes it suitable for applications where minimizing power dissipation is critical. Verify that the required output voltage falls within the programmable range and that the thermal resistance characteristics meet the system's heat dissipation requirements.

Voltage Reference Part Context

This component belongs to the AP431S/AP431SH family of adjustable precision shunt regulators. It shares electrical specifications with industry standard 431 devices but distinguishes itself through its low minimum cathode current requirement. The family includes variants with different voltage tolerances and package options, such as SOT23 and SOT89, catering to diverse design constraints.

Voltage Reference Replacement Considerations

AP431SANTR-G1

Voltage Reference FAQ

What is the typical minimum cathode current required for regulation?

The typical minimum cathode current for regulation is 50µA.

How does the AP431SAZTR-G1 differ from standard 431 devices?

It features a low minimum cathode current for regulation, making it ideal for very low power dissipation applications compared to standard 431 devices.