AS431HBNTR-G1

Overview

The AS431HBNTR-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 maintains stability under capacitive loads. It is housed in an SOT-23 package with a normal pin-out configuration, offering a voltage tolerance of 1.0% and operating across a wide 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
• Guaranteed thermal stability over the full specified operating temperature range
• Low equivalent full-range temperature coefficient for high accuracy applications
• High stability performance when driving capacitive loads

Applications

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

Procurement Notes

Verify that the specific part number matches the required voltage tolerance and package type before ordering. Confirm the pin-out orientation (Normal vs. Mirror) aligns with the PCB footprint design. Ensure the procurement channel provides original manufacturer documentation to validate RoHS compliance and lead-free status. Cross-reference the marking ID on the component against official datasheets to prevent counterfeit risks.

Selection Notes

Select this component when a low-cost, adjustable shunt regulator is needed as a Zener diode substitute. The 1.0% tolerance variant suits general-purpose regulation where tighter precision is not critical. Consider the SOT-23 package for space-constrained surface-mount designs. Evaluate the capacitive load stability requirements if the application involves significant output capacitance.

Part Context

This device belongs to the AS431H family of adjustable precision shunt regulators. It shares functional similarities with industry-standard 431 series components but offers specific manufacturing optimizations from Diodes Incorporated. The family includes variants with different tolerances and package options, such as TO-92, to accommodate diverse circuit board layout and performance needs.

Replacement Considerations

AS431HANTR-G1

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is typically 0.5mA.

Is the AS431HBNTR-G1 compatible with standard SOT-23 footprints?

Yes, it is available in the SOT-23 package with a normal pin-out configuration.