SL15 47003-A

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL1547003-A is a Negative Temperature Coefficient (NTC) thermistor inrush current limiter from the SL15 series. It features a nominal resistance of 47 Ohms at 25°C with a tolerance of ±20%. The component has a maximum steady-state current rating of 3 A and can withstand up to 50 Joules of inrush energy. It utilizes radial leads with a lead spacing of 7.8 mm and a body diameter of 16 mm.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises, effectively limiting inrush current during power-up.
• Designed for PCB mounting with radial leads to facilitate automated assembly and secure mechanical attachment.
• Capable of absorbing significant inrush energy, protecting downstream components from thermal stress during startup.

Inrush Current Limiters (ICL) Applications

• Protection of AC/DC power supplies against high inrush currents
• Transformer inrush current limiting in electronic equipment
• General circuit protection in consumer electronics and industrial control systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix '-A' against the manufacturer's official datasheet or lead order guide to confirm if it denotes a specific packaging variant, tape-and-reel option, or regional compliance difference compared to the standard SL1547003 part number. Ensure the requested quantity matches the manufacturer's standard packing quantity to avoid partial reel issues.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required nominal resistance of 47 Ohms and the maximum steady-state current of 3 A. Confirm that the inrush energy requirement does not exceed 50 Joules. Verify that the 16 mm body diameter and 7.8 mm lead spacing fit within the available PCB footprint constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Vishay Ametherm SL15 series of inrush current limiters. The series offers various resistance values and current ratings in a standardized 16 mm package size, providing designers with options for different power levels while maintaining consistent mechanical dimensions for board layout consistency.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL15 series that match the 47 Ohm resistance and 3 A current rating, such as the SL1547003. Cross-manufacturer replacements require matching electrical parameters (R25, I_max, Energy) and mechanical dimensions.

Inrush Current Limiters (ICL) FAQ

What is the maximum inrush energy the SL1547003-A can absorb?

The component is rated to withstand up to 50 Joules of inrush energy.

What is the lead spacing for this component?

The radial lead spacing is 7.8 mm.