LM431SBCMFX-G

Voltage Reference Overview

The LM431SBCMFX-G is a programmable shunt voltage reference manufactured by onsemi. It operates within an input voltage range of up to 37 V and provides an adjustable output voltage from 2.5 V to 36 V. The device features an initial accuracy of ±2% and a temperature coefficient of 50 ppm/°C. It supports a maximum cathode current of 100 mA and functions across a temperature range of -40°C to +85°C. The component is housed in a surface-mount SOT-89-3 package.

Voltage Reference Feature Summary

• Provides stable, adjustable reference voltage for precision circuit applications
• Internal bandgap reference architecture ensures low temperature drift
• Designed for high rejection of power supply noise variations

Voltage Reference Applications

• Precision voltage regulation circuits
• Portable equipment power management
• Battery-powered system references

Voltage Reference Procurement Notes

Verify the complete part number including the suffix against official onsemi documentation to confirm specific tape-and-reel packaging and quality grade. Ensure the sourcing channel provides valid manufacturer traceability. Confirm RoHS compliance status matches project requirements before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a compact SOT-89-3 footprint is required for shunt regulation. Compare the 50 ppm/°C temperature coefficient against stricter application needs. Verify that the 100 mA cathode current capability meets the load requirements of the target circuit design.

Voltage Reference Part Context

This device belongs to the LM431 family of two-terminal adjustable shunt regulators. It serves as a cost-effective alternative to three-terminal series regulators in feedback loop applications. The family is widely utilized in industrial and consumer electronics for voltage monitoring and control tasks.

Voltage Reference Replacement Considerations

Cross-reference with LM431 variants from other manufacturers such as Texas Instruments or National Semiconductor. Ensure pinout compatibility and electrical parameter alignment before substitution.