SL322R025

Overview

The SL322R025 is a radial lead NTC thermistor inrush current limiter from the SL32 series, manufactured by Vishay Ametherm. It features a nominal resistance of 2 Ohms at 25°C with a tolerance of ±20%. The component is rated for a maximum steady-state current of 25 A and supports voltage ratings of 115 VAC and 230 VAC. It has a diameter of 32 mm and utilizes a bulk packaging format.

Feature Summary

• Designed to limit inrush current during power-up cycles
• Capable of absorbing high input energy levels
• Constructed for PCB mounting with radial leads

Applications

• Power supply input stages
• Pool equipment protection
• General electronic device power circuits

Procurement Notes

Verify the specific datasheet version for the SL322R025 to confirm exact thermal characteristics and pulse rating limits. Ensure the application circuit can handle the residual resistance after the thermistor heats up. Confirm that the 25 A steady-state current rating aligns with the system's operational requirements to prevent component failure.

Selection Notes

Select this component when a 2 Ohm initial resistance is required to limit surge currents. The 25 A rating suits applications with moderate continuous loads. Consider the physical dimensions of the 32 mm disk for PCB layout constraints. Verify compatibility with the operating voltage range of 115 VAC or 230 VAC.

Part Context

This part belongs to the SL32 series of MegaSurge inrush current limiters. These components are negative temperature coefficient (NTC) thermistors designed to protect sensitive electronics from high initial charging currents. The series offers various resistance and current ratings to match different power supply specifications.

Replacement Considerations

Cross-reference with MS322R025 for similar electrical parameters but verify package differences. Check AS322R025 for alternative sourcing options within the same manufacturer line. Ensure any substitute maintains the 2 Ohm resistance and 25 A current capacity.