SL1225003

Inrush Current Limiters (ICL) Overview

The SL1225003 is a negative temperature coefficient (NTC) inrush current limiter from the Vishay Ametherm SL12 series. It features a nominal resistance of 25 ohms with a tolerance of ±15%. The component is rated for a steady-state current of 3 A and has a diameter of 13 mm. Designed for radial lead mounting, it utilizes ceramic construction to provide reliable surge protection in electronic circuits.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up sequences
• Utilizes NTC ceramic technology for rapid resistance reduction after initial activation
• Supports radial leaded PCB mounting for straightforward integration

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitive load protection

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific part number matches the required electrical parameters, including the 25-ohm resistance and 3-ampere current rating. Confirm that the 13-millimeter package size fits the designated PCB footprint. Ensure compliance with relevant safety certifications such as UL approval if required by the final equipment design.

Inrush Current Limiters (ICL) Selection Notes

Select this component when circuit designs require limiting transient currents to protect downstream components like rectifiers or capacitors. The 25-ohm value offers a balance between surge suppression and steady-state power loss. Consider thermal management requirements, as the device dissipates energy during the initial charging phase.

Inrush Current Limiters (ICL) Part Context

This component belongs to the SL12 series of inrush current limiters manufactured by Vishay Ametherm. The series provides various resistance and current ratings to suit different power levels. These devices are engineered for robust performance in consumer and industrial electronics requiring reliable startup protection.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL12 family that match the 25-ohm resistance and 3-ampere current specifications. Verify that any alternative maintains the same 13-millimeter diameter and radial lead configuration for mechanical compatibility.