SC431LCSK-1TRT

Overview

The SC431LCSK-1TRT is an adjustable low-voltage shunt voltage reference manufactured by Semtech. It operates within a cathode voltage range of 1.24 V to 20 V and provides an initial accuracy of ±1%. The device supports a maximum cathode current of 100 mA with a minimum operating current of 100 µA. It is housed in a SOT-23-3 surface-mount package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Adjustable output voltage capability via external resistor divider
• High precision initial accuracy for stable reference applications
• Low power consumption suitable for battery-operated systems

Applications

• Portable equipment requiring precise voltage regulation
• Battery-powered instrumentation circuits
• General-purpose voltage references in compact designs

Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm RoHS compliance status and specific lot traceability requirements before integration. Ensure storage conditions align with manufacturer guidelines to maintain performance integrity over time.

Selection Notes

Select this component when high accuracy and low power are critical in space-constrained designs. Compare against standard zener diodes for superior stability. Evaluate thermal management needs within the specified operating temperature range to ensure long-term reliability in the target application environment.

Part Context

This part belongs to the SC431L series of low-voltage shunt regulators from Semtech. It serves as a drop-in replacement for traditional Zener diodes, offering better regulation and lower dynamic impedance. The series is designed for cost-sensitive applications requiring reliable voltage referencing in small form factors.

Replacement Considerations

SC431LCSK-2TRT offers similar functionality with ±2% accuracy.