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STMicroelectronics Self-Powered Digital Input Current Limiter for Programmable Logic Controllers CLT03-1SC3

Specifications

Country of Origin India
Brand STMicroelectronics
Model CLT03-1SC3
For Use With Programmable Logic Controller, Remote Input Module
Kit Classification Development Board
Featured Device CLT03-1SC3, CLT03-2Q3
Kit Name Self-Powered Digital Input Current Limiter
Complies with IEC 61000-4-2 level 1 ±4 kV (air discharge)

Key Features

  • The device substantially lowers power dissipation of digital inputs without requiring an external supply.
  • Compatible with both high side and low side inputs, suitable for various control systems.
  • Includes a deglitch filter to enhance electromagnetic compatibility (EMC) robustness.
  • Input signals supply power to the device, enabling self-powered operation.
  • Complies with IEC 61000-4-2 level 1 ESD standards for both air and contact discharge.
  • Available in compact SOT23-8L and QFN-16L package options with fine pitch outlines.
  • Supports driving opto-couplers and LVTTL level circuits for versatile integration.

Product Description

STMicroelectronics CLT03-1SC3 self-powered digital input current limiter is an advanced solution engineered to drastically reduce power dissipation in digital input circuits of Programmable Logic Controllers (PLCs) and remote input modules. This device operates without the need for external power, drawing energy directly from the input signal, which enhances system efficiency and reliability.

Designed for compatibility with both high side and low side inputs, the CLT03-1SC3 supports a broad range of industrial applications including automation, control engineering, and robotics. It integrates a deglitch filter, which improves EMC robustness by filtering out transient signals that could otherwise cause false triggering or damage sensitive components.

The device conforms to stringent IEC 61000-4-2 Level 1 Electrostatic Discharge (ESD) protection, ensuring ±4 kV air discharge and ±2 kV contact discharge immunity, thereby enhancing system durability under harsh electrical conditions.

Key packaging options include the compact SOT23-8L with a 650 μm pitch and QFN-16L with a 500 μm pitch, enabling designers to optimize PCB layouts in space-constrained applications. Additionally, the CLT03-1SC3 can drive opto-couplers and supports LVTTL-compatible circuits, thus extending its usability in digital signal interfacing.

The device drastically reduces power dissipation for digital inputs. Self-powered by input signals; no external supply required. Supports high side and low side compatibility. Incorporated deglitch filter enhances EMC robustness.

Meets IEC 61000-4-2 level 1 ESD standards for air and contact discharge. Available in SOT23-8L and QFN-16L package options. Can drive opto-couplers and LVTTL circuits.

This current limiter is ideal for industrial automation, control systems, robotics development, and remote input applications where efficiency and EMI resilience are critical. EnvMart recommends this product for engineers and designers seeking reliable input protection for programmable logic devices.

STMicroelectronics Self-Powered Digital Input Current Limiter for Programmable Logic Controllers CLT03-1SC3
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Frequently Asked Questions

The CLT03-1SC3 is designed to reduce power dissipation in digital input circuits of Programmable Logic Controllers (PLCs) and remote input modules without requiring an external power supply.

It operates by drawing energy directly from the input signals, allowing it to function without an external power source.

The device is compatible with both high side and low side inputs, making it versatile for various control systems.

The deglitch filter enhances electromagnetic compatibility (EMC) robustness by filtering out transient signals that could lead to false triggering or damage to sensitive components.

It complies with IEC 61000-4-2 level 1 ESD standards, providing ±4 kV air discharge and ±2 kV contact discharge immunity.

The CLT03-1SC3 is available in compact SOT23-8L and QFN-16L package options, which have fine pitch outlines suitable for space-constrained applications.

Yes, the CLT03-1SC3 can drive opto-couplers, making it suitable for various digital signal interfacing applications.

It is ideal for industrial automation, control systems, robotics development, and remote input applications where efficiency and EMI resilience are critical.

The CLT03-1SC3 is manufactured in India.

The model name of this device is CLT03-1SC3.

It is classified as a development board under the kit classification.

This model features the CLT03-1SC3 and CLT03-2Q3 as part of its device offerings.

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