SL157R008LAJ

Inrush Current Limiters (ICL) Overview

The SL157R008LAJ is a radial leaded inrush current limiter from the Vishay Ametherm SL15 series. It features a 7-ohm nominal resistance at 25°C with a tolerance of ±20%. The component is rated for a maximum steady-state current of 5A and supports voltage ratings of 115VAC and 230VAC. It utilizes a 16mm diameter disc with a 6mm width, designed for PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents to protect sensitive components in switching power supplies
• Features negative temperature coefficient characteristics for automatic resistance reduction during operation
• Includes UL approval for compliance with safety standards in electrical equipment

Inrush Current Limiters (ICL) Applications

• Switching power supply input stages
• Electronic ballast circuits
• General AC/DC power conversion systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix LAJ against official datasheets to confirm any unique packaging or marking variations distinct from standard SL15 parts. Ensure the 5A steady-state current rating aligns with the target circuit's continuous load requirements. Confirm that the 7-ohm initial resistance meets the design constraints for inrush suppression without excessive voltage drop.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 7-ohm initial resistance and 5A current handling capacity are required for 115VAC or 230VAC applications. The 16mm form factor offers a balance between physical size and energy absorption capability. Consider thermal derating curves if operating near the maximum temperature limits or in confined spaces.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL15 series of NTC thermistors, which are standardized around a 15mm to 16mm disc diameter. The series provides various resistance values tailored for different power levels. The SL157R008LAJ specifically addresses mid-range current applications requiring moderate initial impedance.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with other Vishay Ametherm SL15 variants such as SL154R008 or SL152R509 if resistance or current ratings differ. Verify that substitute parts maintain the same radial lead spacing and voltage ratings for direct board compatibility.