AP431SBZTR-G1

Voltage Reference Overview

The AP431SBZTR-G1 is a three-terminal adjustable 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 ±1% at +25°C. The device supports a sink current capacity from 100µA to 100mA with a typical minimum cathode current for regulation of 50µA. It functions reliably across an operating temperature range of -40°C to +125°C and utilizes a TO-92 package.

Voltage Reference Feature Summary

• Features low minimum cathode current for regulation, enabling operation in very low power dissipation applications
• Provides programmable precise output voltage ranging from the reference voltage up to 36V
• Ensures high stability under capacitive loads with sharp turn-on characteristics
• Maintains low deviation of reference voltage over the full temperature range

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the component matches the specified TO-92 Ammo Packing format and the 1.0% voltage tolerance grade. Confirm the suffix G1 indicates compliance with RoHS 3 standards and Halogen-free requirements. Ensure the ordering code aligns with the manufacturer's standard packing quantity for this specific package type.

Voltage Reference Selection Notes

Select this part when a low-cost, adjustable shunt regulator is required for general-purpose voltage referencing or feedback loops. The TO-92 package is suitable for through-hole mounting where higher thermal resistance compared to surface-mount packages is acceptable. Verify that the application does not require the lower 0.5% tolerance grade offered by the 'A' suffix variants.

Voltage Reference Part Context

This component belongs to the AP431S/AP431SH family of adjustable precision shunt regulators. It serves as a direct electrical substitute for industry-standard Zener diodes while offering superior accuracy and temperature stability. The series includes multiple package options and tolerance grades to accommodate various design constraints.

Voltage Reference Replacement Considerations

AP431SAZTR-G1 (0.5% tolerance)

Voltage Reference FAQ

What is the maximum continuous cathode current?

The maximum continuous cathode current is 100 mA.

Does the AP431SBZTR-G1 include a shutdown pin?

No, it is a three-terminal device without a dedicated shutdown function.