SL227R010

Overview

The SL227R010 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 7 Ohms with a tolerance of ±20%. The component has a current rating of 10 A and voltage ratings of 115 VAC and 230 VAC. It utilizes a radial leaded package with a 22 mm diameter and a 7.8 mm lead spacing. The unit weighs approximately 9.117 g and operates within standard industrial temperature ranges.

Feature Summary

• Provides effective limitation of high inrush currents to protect switching power supply components
• Utilizes NTC thermistor technology for automatic resistance adjustment during operation
• Features radial leads for through-hole PCB mounting applications

Applications

• Switching power supplies
• Electronic ballasts
• Power factor correction circuits

Procurement Notes

Verify the specific datasheet version for thermal characteristics and steady-state resistance values before integration. Confirm that the 10 A current rating aligns with the peak load requirements of the target circuit. Ensure PCB layout accommodates the 22 mm diameter and 7.8 mm lead spacing for proper mechanical fit and thermal dissipation.

Selection Notes

Select this component when a 7 Ohm initial resistance is required to limit inrush current in 115 VAC or 230 VAC systems. The 10 A rating suits moderate power applications. Consider the SL22 series dimensions if space constraints exist. Compare against higher or lower resistance variants in the same family if different limiting profiles are needed.

Part Context

This part belongs to the Vishay Ametherm SL22 series of inrush current limiters. The series offers various resistance and current ratings to suit different power levels. These components are widely used in consumer electronics and industrial equipment to prevent fuse blowing and relay contact damage during power-up.

Replacement Considerations

Direct substitutes include other Vishay Ametherm parts with identical 7 Ohm resistance and 10 A rating, such as those in the SL22 series. Cross-manufacturer replacements must match the 22 mm diameter, radial lead configuration, and electrical specifications to ensure functional equivalence.