AS431AZTR-G1

Overview

The AS431AZTR-G1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides programmable output voltage ranging from 2.5V to 36V with an initial accuracy of ±0.5%. The device operates within a cathode current range of 1mA to 100mA and features a typical temperature coefficient of 20ppm/°C. It is housed in a TO-92 package with Ammo packing, suitable for through-hole mounting across an operating temperature range of -40°C to +125°C.

Feature Summary

• Programmable precise output voltage from 2.5V to 36V
• High stability under capacitive load conditions
• Low equivalent full-range temperature coefficient
• Sink current capacity from 1mA to 100mA

Applications

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

Procurement Notes

Verify the specific ordering suffix 'G1' confirms RoHS compliance and Green molding compound status as defined by the manufacturer. Confirm the 'Z' package designation corresponds to the TO-92 Ammo Packing variant rather than bulk packaging. Ensure the 'A' tolerance code matches the required ±0.5% specification for the design.

Selection Notes

Select this component when a high-precision adjustable reference is needed in a through-hole TO-92 package. The ±0.5% tolerance offers tighter accuracy than standard 1% variants. Verify that the application requires a shunt regulator topology capable of sinking up to 100mA and operating reliably at temperatures up to 125°C.

Part Context

This part belongs to the AS431 family of adjustable precision shunt regulators. It serves as a direct replacement for industry-standard Zener diodes in applications requiring better thermal stability and lower output impedance. The series includes various packages like SOT23 and SOT89, but this specific model utilizes the TO-92 form factor.

Replacement Considerations

AS431AZTR-E1 is listed as a parameter-equivalent alternative within the same product line.