NCP431ACSNT1G

Product Overview

The onsemi NCP431ACSNT1G is an adjustable shunt voltage reference for circuits that require a reference point in a power-management or analog signal path. The device provides a 2.5 V minimum or fixed output voltage and a 36 V maximum output voltage, with an output current of 40 µA and a cathode current of 100 mA. The output tolerance is ±1%, and the typical temperature coefficient is 50 ppm/°C. The device uses a surface-mount SOT-23-3 package, also identified as TO-236.

Key Features

• Adjustable shunt reference output with a 2.5 V minimum or fixed voltage and a 36 V maximum voltage
• ±1% output tolerance and 50 ppm/°C typical temperature coefficient
• 40 µA output current and 100 mA cathode current
• Surface-mount SOT-23-3 package, also identified as TO-236

Applications

• Providing a reference voltage for analog-to-digital converter input stages
• Setting a reference threshold in power-supply feedback regulation circuits
• Generating a reference point for sensor signal conditioning modules
• Establishing a reference voltage in measurement or control boards

Design & Procurement Notes

When selecting the NCP431ACSNT1G, confirm that the adjustable output range from 2.5 V minimum or fixed to 36 V maximum matches the target reference level and that the 40 µA output current and 100 mA cathode current are compatible with the surrounding circuit. Include the ±1% tolerance and 50 ppm/°C typical temperature coefficient in the system error budget, particularly where measurement accuracy or regulation stability depends on the reference. The SOT-23-3 surface-mount package should be checked against the available PCB footprint. Exact manufacturer part number matching is recommended to ensure the selected device matches the required adjustable shunt reference, package, and electrical characteristics.