CLT03-1SC3

Current Regulation/Management Overview

The CLT03-1SC3 is a self-powered digital input current limiter manufactured by STMicroelectronics, designed to drastically reduce power consumption in industrial digital input modules. It operates within an ambient temperature range of -40°C to 105°C and features a single-channel configuration housed in an SOT23-8L package with a 650 µm pitch. The device complies with IEC 61131-2 Type 1 and Type 3 standards, providing high-side/low-side compatibility and reverse plug-in protection. It includes integrated deglitch filtering for EMC robustness and can drive isolated optocouplers or non-isolated LVTTL circuits without requiring an external power supply.

Current Regulation/Management Feature Summary

• Self-powered operation eliminates the need for external power supplies and reduces standby power consumption
• Compliance with IEC 61131-2 Type 1 and Type 3 characteristics for versatile industrial integration
• Integrated deglitch filter enhances electromagnetic compatibility (EMC) robustness
• Supports both high-side and low-side configurations with reverse plug-in protection

Current Regulation/Management Applications

• Industrial digital input modules requiring low power dissipation
• Isolated digital input interfaces driving optocouplers
• Non-isolated LVTTL digital input termination circuits

Current Regulation/Management Procurement Notes

Verify the specific suffix '1SC3' against official STMicroelectronics documentation to confirm pinout and electrical specifications, as variations exist within the CLT03 family. Ensure the selected package matches the required PCB layout constraints for the SOT23-8L form factor. Cross-reference the intended operating temperature range with the component's rated limits to guarantee reliability under thermal stress conditions.

Current Regulation/Management Selection Notes

Select this component when designing systems that require significant reduction in digital input power dissipation without adding complexity from external power rails. It is suitable for applications needing compliance with IEC 61131-2 standards while maintaining compact board space through its small SOT23-8L footprint. Consider its self-powered nature for battery-operated or energy-efficient industrial control environments.

Current Regulation/Management Part Context

The CLT03 series represents STMicroelectronics' solution for optimizing power management in industrial automation inputs. Unlike traditional solutions requiring constant power, these devices activate only upon signal presence. This family supports various channel counts and packaging options, enabling designers to scale input density while managing heat dissipation and isolation requirements effectively across diverse industrial protocols.

Current Regulation/Management Replacement Considerations

Consult official substitution lists for verified alternatives. Generic equivalents may not replicate the specific self-powered activation logic or IEC 61131-2 compliance characteristics.