SL222R510

Overview

The SL222R510 is a radial leaded inrush current limiter (ICL) from the Vishay Ametherm SL22 series. It features a nominal resistance of 2.5 Ohms with a tolerance of ±20%. The device has a steady-state current rating of 10 A and is designed for PCB mounting. Key physical dimensions include a diameter of 22 mm, a width of 6 mm, and a lead spacing of 7.8 mm. The component utilizes NTC thermistor technology to limit initial surge currents.

Feature Summary

• Utilizes negative temperature coefficient (NTC) thermistor technology to restrict high initial surge currents during power-up.
• Provides UL approval for safety compliance in electronic circuits.
• Designed for through-hole PCB mounting with radial leads.

Applications

• Power supply input stages
• Transformer primary circuit protection
• Capacitor charging circuit limiting

Procurement Notes

Verify the specific suffix 'BCJ' if required by your bill of materials, as it may denote custom specifications or packaging distinct from the standard SL222R510. Confirm availability status with distributors, as some listings indicate regional sales restrictions. Ensure the selected variant matches the required voltage ratings and thermal characteristics for your specific application environment.

Selection Notes

Select this component when a 2.5 Ohm resistance at 25°C is required to manage inrush currents up to 10 A. Consider the 90 Joules energy absorption capability for applications involving significant capacitive loads. Evaluate the 22 mm form factor against available PCB space constraints. Verify that the operating voltage range aligns with system requirements, typically supporting common AC line voltages.

Part Context

The SL222R510 belongs to the SL22 series of inrush current limiters manufactured by Vishay / Ametherm. This series is characterized by its robust construction and suitability for general-purpose electronics protection. The part number indicates a 2.5 Ohm resistance value within this standardized product line.

Replacement Considerations

Cross-reference with other Vishay Ametherm SL22 series parts for different resistance values. Check competitor NTC thermistors with equivalent 2.5 Ohm resistance and 10 A current ratings. Ensure any substitute maintains the same radial lead configuration and 22 mm diameter for mechanical compatibility.