SC431LC5SK-2TRT

Overview

The SC431LC5SK-2TRT is an adjustable shunt voltage reference manufactured by Semtech. It operates within a cathode current range of 100 µA to 100 mA and provides an adjustable output voltage from 1.24 V to 20 V. The device features an initial accuracy of 0.25% and is housed in a SOT-23-5 surface-mount package. It functions without a shutdown mode and operates across a temperature range of 0°C to +70°C.

Feature Summary

• Provides high-precision adjustable voltage referencing with 0.25% initial accuracy
• Operates as a two-terminal shunt regulator with wide cathode current capability
• Designed for compact surface-mount integration in space-constrained applications

Applications

• Precision analog circuit biasing
• Portable equipment power management
• Battery-powered system regulation

Procurement Notes

This component is officially discontinued and no longer in production. Verification of availability is restricted to existing stock or obsolete channels. Engineers must confirm end-of-life status and lead times through authorized distributors before design finalization. Alternative sourcing requires careful validation of authenticity and storage conditions due to the part's retired status.

Selection Notes

Select this component only if the specific 0.25% accuracy and SOT-23-5 footprint are mandatory. The adjustable voltage range suits applications requiring precise reference levels between 1.24 V and 20 V. Consider the absence of a shutdown feature when designing for low-power sleep modes. Verify thermal performance within the 0°C to +70°C operating range for the target environment.

Part Context

The SC431LC5SK-2TRT belongs to the SC431LC5SK series of low-voltage shunt regulators. It serves as a precision alternative to standard Zener diodes, offering superior stability and lower noise characteristics. The five-pin SOT-23 package distinguishes it from traditional three-pin references, allowing for additional control or sensing capabilities integrated into the shunt regulator architecture.

Replacement Considerations

Public confirmed substitute part numbers are not available.