SC431LCSK-.5 TR

Overview

The SC431LCSK-.5 TR is an adjustable shunt voltage reference integrated circuit manufactured by Semtech. It operates within a supply voltage range of 1.24 V to 16 V and provides an output current capability of up to 100 mA with a minimum cathode current of 100 µA. The device features an initial accuracy tolerance of ±0.5%. It is designed for surface mount installation in a SOT-23-3 package (TO-236-3/SC-59). The component functions within an ambient temperature range of 0°C to 70°C.

Feature Summary

• Adjustable shunt regulation architecture allowing precise voltage setting via external resistors
• High initial accuracy with ±0.5% tolerance specification
• Compact surface-mount SOT-23-3 packaging optimized for space-constrained designs

Applications

• Precision voltage references in portable electronic devices
• Power supply feedback loops requiring stable reference voltages
• Battery-powered equipment needing low quiescent current operation

Procurement Notes

Verify the obsolete status of this component before design finalization, as availability may be restricted. Confirm that the SOT-23-3 package dimensions align with your PCB footprint requirements. Ensure the operating temperature range of 0°C to 70°C meets your environmental specifications. Check for end-of-life notifications from Semtech to mitigate supply chain risks during production.

Selection Notes

Select this component when a compact, adjustable shunt reference with moderate accuracy is required. The SOT-23-3 package suits applications with strict size constraints. Consider the 100 mA output current limit for load requirements. Verify that the 0°C to 70°C operating range is sufficient for your specific environment compared to industrial or automotive grade alternatives.

Part Context

This part belongs to the SC431 series of adjustable shunt regulators, which are widely used as precision voltage references. The SC431 family offers various accuracy grades and packaging options. Semtech manufactures these components for general-purpose power management applications where stable reference voltages are critical for system performance.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Semtech technical support for qualified replacements due to the component's obsolete status.