SL222R510BCJ

Overview

The SL222R510BCJ is a Negative Temperature Coefficient (NTC) thermistor from the Vishay Ametherm SL22 series, designed as an inrush current limiter. It features a nominal resistance of 2.5 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 10 Amps and has a disc diameter of 22 mm. It is rated for a maximum recommended energy of 90 Joules and holds UL approval.

Feature Summary

• Limits high initial charging currents to protect downstream components
• Provides automatic reset functionality after thermal stabilization
• Offers UL certification for safety compliance

Applications

• Power supply input stages
• Motor drive circuits
• Capacitive load protection

Procurement Notes

Verify the specific suffix BCJ against the official Vishay datasheet to confirm physical dimensions and lead configuration. Ensure the application voltage and current ratings do not exceed the 10A steady-state limit. Confirm that the 90 Joule energy rating is sufficient for the target circuit's capacitive discharge requirements.

Selection Notes

Select this component when a 2.5 Ohm cold resistance is required for moderate inrush suppression. The 22mm form factor accommodates higher thermal mass compared to smaller discs. Verify that the 10A current rating aligns with the system's operational load to prevent overheating during continuous operation.

Part Context

This part belongs to the SL22 series of radial lead NTC thermistors. It is manufactured by Vishay / Ametherm. The series is characterized by robust construction suitable for general-purpose inrush current limiting applications in AC and DC power systems.

Replacement Considerations

Direct substitutes include other Vishay SL22 series parts with similar resistance and current ratings, such as SL222R510. Cross-brand replacements require matching the 2.5 Ohm resistance, 10A current capacity, and 22mm diameter.