SL325R020

Inrush Current Limiters (ICL) Overview

The SL325R020 is a radial leaded inrush current limiter from the BigAMP series, manufactured by Vishay Ametherm. It features a nominal resistance of 5 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 20 A and is rated for voltages up to 480 VAC. It utilizes an NTC thermistor design housed in a bulk package.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective protection against high initial surge currents during power-up sequences
• Utilizes negative temperature coefficient characteristics to reduce resistance as it heats up
• Designed for robust PCB mounting with radial leads for secure mechanical connection

Inrush Current Limiters (ICL) Applications

• Transformer primary circuit protection
• Power supply input stage filtering
• General electronic equipment surge suppression

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 5 Ohm resistance and 20 A current rating. Confirm compliance with relevant safety certifications such as UL or CSA if mandated by the target application standards. Ensure the radial lead spacing aligns with the printed circuit board layout requirements before finalizing the order.

Inrush Current Limiters (ICL) Selection Notes

Select this component when the application requires limiting inrush currents for loads operating at voltages up to 480 VAC. The 5 Ohm resistance value is suitable for moderate surge scenarios where a higher impedance than lower-resistance variants is needed. Consider the thermal dissipation capabilities and physical dimensions to ensure adequate clearance on the assembly.

Inrush Current Limiters (ICL) Part Context

This device belongs to the BigAMP series of inrush current limiters, which are engineered for high-energy applications. The SL325R020 represents a specific configuration within this family, offering a balance between surge suppression capability and steady-state conduction efficiency for industrial and commercial power systems.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers include SL325R020B.