SL22-2R018-BT

Inrush Current Limiters (ICL) Overview

The SL22-2R018-BT is a radial lead inrush current limiter from the Vishay Ametherm SL22 series. It features a nominal resistance of 2 Ohms with a tolerance of ±20%. The device supports a steady-state current rating of 18 A and operates at voltage ratings up to 480 VAC. Physical dimensions include a 22 mm diameter disc with a 7.8 mm lead spacing. It utilizes a kink characteristic for effective surge suppression.

Inrush Current Limiters (ICL) Feature Summary

• Provides reliable inrush current limitation through a negative temperature coefficient ceramic structure
• Features a kink characteristic profile for optimized surge protection performance
• Designed for PCB mounting with radial leads for straightforward integration

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitive load switching applications

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific suffix BT matches the required packaging configuration, as standard bulk variants may differ. Confirm UL approval status if regulatory compliance is mandatory for the end application. Ensure the 18 A steady-state current rating aligns with the circuit's operational requirements to prevent thermal overload during continuous use.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 2 Ohm initial resistance is required to limit peak charging currents. The 18 A rating suits moderate power applications where higher current capacity is unnecessary. Consider the 22 mm package size for adequate heat dissipation. Verify compatibility with the system's maximum operating voltage of 480 VAC before implementation.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL22 family of inrush current limiters manufactured by Vishay Ametherm. These components are widely used in electronic equipment to protect sensitive downstream components from high initial charging currents. The SL22 series offers various resistance and current combinations to suit different power levels.

Inrush Current Limiters (ICL) Replacement Considerations

The SL222R018A is a comparable variant within the same series offering similar electrical characteristics. Cross-reference physical dimensions and lead spacing to ensure mechanical compatibility during substitution.