SL15 40004-B

Inrush Current Limiters (ICL) Overview

The SL1540004B is a Negative Temperature Coefficient (NTC) thermistor inrush current limiter from the Vishay Ametherm SL15 series. It features a nominal resistance of 40 Ohms and a steady-state current rating of 4 Amps. The component has a diameter of 16 mm and utilizes radial leads with a kinked configuration for PCB mounting. It is designed to withstand an inrush energy capacity of 35 Joules, protecting switching power supplies from damaging current spikes during startup.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises
• Kinked lead design facilitates secure through-hole PCB mounting
• Engineered to absorb significant inrush energy without failure

Inrush Current Limiters (ICL) Applications

• Switching power supply input protection
• Electronic equipment startup surge suppression
• General circuit inrush current limiting

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm physical dimensions and lead configuration. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required steady-state current handling and nominal resistance values. Confirm that the 16 mm diameter package fits the available PCB space and that the kinked lead style aligns with the assembly process requirements.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL15 series of inrush current limiters manufactured by Vishay Ametherm. These components are widely used in consumer electronics and industrial power supplies to mitigate the stress caused by capacitive loads during initial energization.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL15 series that share identical 40 Ohm resistance and 4 Amp current ratings. Cross-referencing datasheets is necessary to verify mechanical fit and thermal characteristics.