SL322R023

Overview

The SL322R023 is a radial leaded NTC thermistor designed as an inrush current limiter. It features a nominal resistance of 2 Ohms with a ±20% tolerance and a steady-state current rating of 23 A. The component has a diameter of 32 mm and supports voltage ratings up to 480 VAC. It utilizes through-hole mounting for PCB integration.

Feature Summary

• Utilizes negative temperature coefficient (NTC) characteristics to limit initial surge currents
• Supports high steady-state current operation for robust circuit protection
• Provides UL and CSA recognition for compliance in various applications

Applications

• Power supply input stages
• Transformer primary circuits
• Motor drive inputs

Procurement Notes

Verify the specific voltage rating requirements against the application's peak line voltage, noting the 480 VAC maximum. Confirm that the 23 A steady-state current capacity aligns with the operational load. Ensure the PCB footprint accommodates the 32 mm diameter and radial lead spacing. Check for UL/CSA certification needs if required by regional safety standards.

Selection Notes

Select this component when a 2 Ohm resistance value is required to manage inrush currents effectively. Consider the 23 A current rating for loads exceeding lower-rated alternatives. Evaluate the 32 mm package size for adequate thermal dissipation and mechanical clearance on the target PCB layout compared to smaller series options.

Part Context

This part belongs to the SL32 series of inrush current limiters manufactured by Vishay Ametherm. These components are specialized NTC thermistors engineered specifically for protecting electronic equipment from damaging startup surges. The series offers various resistance and current combinations to suit different power levels.

Replacement Considerations

Cross-reference other Vishay Ametherm SL32 variants or equivalent NTC thermistors from other manufacturers. Verify that substitute parts match the 2 Ohm resistance, 23 A current rating, and 32 mm physical dimensions to ensure compatibility.