SL222R515A

Overview

The SL222R515A is a radial lead inrush current limiter manufactured by Vishay Ametherm, belonging to the SL22 series. It features a 22 mm diameter body with kinked leads for secure PCB mounting. The component provides a nominal resistance of 2.5 Ohms and supports a steady-state current rating of 15 A. It is designed for operation at 115 VAC and 230 VAC. Key electrical parameters include a dissipation factor of 32.4 mW/°C and a thermal time constant of 94 seconds. The unit weighs approximately 9.117 g.

Feature Summary

• Utilizes negative temperature coefficient thermistor technology to limit initial surge currents
• Features kinked radial leads to ensure stable positioning on printed circuit boards
• Provides UL approval for safety compliance in power supply applications

Applications

• Switching power supplies
• Electronic ballasts
• Power adapters

Procurement Notes

Verify that the specific part number matches the required resistance and current ratings for the target application. Confirm that the kinked lead style aligns with the PCB footprint design. Ensure the operating voltage does not exceed the rated limits of 115 VAC or 230 VAC. Check for RoHS compliance requirements if applicable to the assembly process.

Selection Notes

Select this component when a 2.5 Ohm resistance value is required to manage inrush current in circuits handling up to 15 A. The 22 mm package size offers higher energy absorption compared to smaller variants. Consider the thermal time constant and dissipation factor for cooling requirements. This model is suitable for standard AC line voltages commonly found in consumer electronics.

Part Context

This device is part of the SL22 series of inrush current limiters from Vishay Ametherm. The series includes various resistance and current ratings within the same physical form factor. These components are widely used to protect sensitive electronic circuits from high initial charging currents during power-up events.

Replacement Considerations

Direct substitutes within the same series include SL221R020 and SL225R012. Verify that alternative parts match the 2.5 Ohm resistance and 15 A current specifications. Ensure the replacement maintains the kinked lead configuration and 22 mm diameter for mechanical compatibility.