SL1240002

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL1240002 is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 40 ohms at 25°C with a tolerance of ±25%. The component supports a maximum steady-state current of 2 A and operates within voltage ratings of 115 VAC and 230 VAC. It utilizes a radial leaded package with a disc diameter of 12 mm, suitable for printed circuit board mounting.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to dynamically reduce resistance as temperature increases during operation
• Provides effective suppression of high initial surge currents during power-up sequences
• Features robust radial leaded construction for reliable PCB integration

Inrush Current Limiters (ICL) Applications

• Power supply input stages requiring surge protection
• Electronic equipment mains input circuits
• Transformer primary side protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific part number against official Vishay Ametherm documentation to confirm electrical characteristics and mechanical dimensions. Ensure compatibility with the target application's voltage and current requirements before procurement. Check for updated datasheets regarding UL approval status and thermal performance limits.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on its 40-ohm cold resistance and 2-ampere current rating. Consider the 12-millimeter disc size for spatial constraints. Evaluate the thermal energy rating to ensure it withstands the specific surge profile of the intended circuit without damage.

Inrush Current Limiters (ICL) Part Context

This device belongs to the SL12 series of inrush current limiters manufactured by Vishay Ametherm. The series offers various resistance values and physical sizes to accommodate different power levels. These components are widely used in consumer electronics and industrial power supplies to protect sensitive downstream components from startup surges.

Inrush Current Limiters (ICL) Replacement Considerations

Consult official Vishay Ametherm substitution guides for verified equivalent part numbers. Do not assume interchangeability with generic NTC thermistors lacking specific inrush current limiting certifications or matching thermal profiles.