SL2212103

Overview

The SL2212103 is a radial-leaded NTC inrush current limiter from the Vishay Ametherm SL22 series. It features a nominal resistance of 120 Ohms at 25°C with a tolerance of ±25%. The component has a disc diameter of 22 mm and is rated for a maximum steady-state current of 3 A. It supports voltage ratings of 115 VAC and 230 VAC, with a dissipation factor of 32.4 mW/C. The device utilizes a radial termination style with a lead spacing of 7.8 mm.

Feature Summary

• Radial-leaded NTC thermistor construction for PCB mounting
• High energy absorption capability for surge protection
• UL and CSA approved for safety compliance

Applications

• Power supply input stages
• Transformer primary circuits
• Capacitor charging protection

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm exact resistance tolerance and thermal characteristics. Ensure the selected variant matches the required steady-state current and peak current ratings for the target circuit. Confirm package dimensions and lead spacing compatibility with the printed circuit board layout before finalizing procurement orders.

Selection Notes

Select this component based on the required cold resistance value and maximum allowable inrush current. Evaluate the thermal environment to ensure the steady-state current rating is not exceeded during continuous operation. Consider the physical size constraints imposed by the 22 mm disc diameter and radial lead configuration when designing the enclosure or panel layout.

Part Context

This part belongs to the SL22 series of MegaSurge inrush current limiters manufactured by Vishay Ametherm. The series provides robust protection against high initial charging currents in electronic power systems. These components are designed to reduce stress on downstream rectifiers and capacitors during power-up events.

Replacement Considerations

Cross-reference with MS2212103 for equivalent specifications. Verify that substitute parts maintain identical resistance values, current ratings, and approval certifications.