SL1547003B

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL1547003B is a disc-type NTC thermistor from the SL15 series, designed for inrush current limiting. It features a 16mm diameter with a nominal resistance of 47 ohms at 25°C and a maximum steady-state current rating of 3A. The component utilizes radial leads for PCB mounting and is rated for voltages up to 115VAC and 230VAC. Key electrical parameters include a tolerance of ±20% and a maximum recommended energy absorption of 50 Joules.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up cycles
• Utilizes negative temperature coefficient characteristics for self-regulating resistance
• Constructed with robust radial leads suitable for through-hole PCB integration

Inrush Current Limiters (ICL) Applications

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

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'B' against official Vishay documentation to confirm if it denotes a specialized variant or standard packaging configuration. Ensure the selected part matches the required voltage ratings and thermal dissipation capabilities for the target application environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the 47-ohm cold resistance value and 3-amp current handling capacity. Confirm that the 50-joule energy rating aligns with the peak surge requirements of the connected load to prevent device failure during operation.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL15 series of MegaSurge inrush current limiters. These components are engineered for reliable performance in electronic circuits requiring protection against initial current spikes, offering a balance of compact size and high energy absorption capability.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes within the same series require matching the 47-ohm resistance and 3-amp current rating. Verify mechanical dimensions and lead spacing compatibility before integrating alternative manufacturers' equivalents.