SL2216004

Overview

The Vishay Ametherm SL2216004 is a negative temperature coefficient (NTC) thermistor designed as an inrush current limiter. It belongs to the SL22 series, featuring a 22 mm diameter radial leaded package suitable for PCB mounting. The component has a nominal resistance of 16 Ohms with a tolerance of ±20%. It supports a steady-state maximum current rating of 4 A and operates at voltage ratings of 115 VAC and 230 VAC. The device utilizes a bulk packaging format.

Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Features self-resetting capability without requiring manual intervention
• Constructed with robust radial leads for secure through-hole or PCB integration

Applications

• Protection of switching power supplies against initial surge currents
• Guarding transformer circuits from damaging inrush events
• Safeguarding capacitive loads in electronic equipment

Procurement Notes

Verify that the specific order matches the SL2216004 part number to ensure correct 16 Ohm resistance and 4 A current rating. Confirm compliance requirements such as RoHS status if applicable to the project specifications. Ensure the procurement channel provides official documentation to validate component authenticity and performance characteristics.

Selection Notes

Select this component when circuit design requires a 16 Ohm limiting resistance with a 4 A steady-state capacity. The 22 mm form factor is appropriate for applications accommodating standard radial dimensions. Consider thermal dissipation requirements and ambient operating temperatures to ensure reliable long-term performance within the specified electrical limits.

Part Context

This component is part of the Vishay Ametherm SL22 series of MegaSurge inrush current limiters. The series offers various resistance and current combinations tailored for different power levels. These NTC thermistors are engineered to replace traditional fuse-based protection methods by allowing continuous operation after the initial surge event subsides.

Replacement Considerations

Direct substitutes within the same series include SL2216004A and SL2216005. Verify that alternative part numbers match the required 16 Ohm resistance and 4 A current rating before implementation to maintain circuit integrity.