SL22 2R508-B

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL222R508B is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 2.5 Ohms with a tolerance of ±20%. The component has a cylindrical diameter of 22 mm and supports a maximum steady-state current of 8 A at temperatures up to 65°C. It utilizes radial leads for through-hole PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to provide high initial resistance that decreases as temperature rises, effectively limiting startup surge currents.

Inrush Current Limiters (ICL) Applications

• Protection of power supplies against inrush current
• Limiting surge currents in AC/DC conversion circuits
• Protecting sensitive electronic components during system startup

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix 'B' against the manufacturer's latest datasheet to confirm lead wire configuration and mechanical dimensions. Ensure thermal management requirements are met, as performance depends on ambient temperature and self-heating characteristics during operation.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required nominal resistance value of 2.5 Ohms and the maximum steady-state current rating of 8 A. Confirm that the 22 mm diameter fits the available PCB space and that the radial lead spacing matches the board layout constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL22 series of inrush current limiters from Vishay Ametherm. The series is characterized by robust construction suitable for through-hole applications, providing reliable protection against electrical surges in various power electronics environments.

Inrush Current Limiters (ICL) Replacement Considerations

Potential substitutes include other 2.5 Ohm, 8 A, 22 mm NTC inrush current limiters from manufacturers such as EPCOS or Murata, provided they match the electrical ratings and mechanical footprint.

Inrush Current Limiters (ICL) FAQ

What is the maximum steady-state current rating?

The maximum steady-state current is 8 A at an ambient temperature of up to 65°C.

What is the nominal resistance value?

The nominal resistance is 2.5 Ohms with a tolerance of ±20%.