SL2220005BT

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL2220005BT is a negative temperature coefficient (NTC) thermistor designed for inrush current limiting applications. It features a nominal resistance of 20 ohms at 25°C with a tolerance of ±20%. The device supports a maximum steady-state current of 5 amps and can absorb up to 125 joules of recommended energy. It has a diameter of 22mm and utilizes a kinked lead configuration for secure mounting.

Inrush Current Limiters (ICL) Feature Summary

• Absorbs high initial surge currents during power-up to protect downstream circuit components
• Rapidly decreases resistance from high initial value to negligible levels under steady-state operation
• Provides robust protection against thermal stress and electrical transients in sensitive electronics

Inrush Current Limiters (ICL) Applications

• Switching power supplies
• Uninterruptible power systems
• Industrial inverters
• Variable frequency drives

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix 'BT' against the manufacturer's official datasheet to confirm lead frame material, termination plating, or packaging variations. Ensure the selected variant matches the required mechanical footprint and thermal characteristics for the target assembly. Cross-reference the part number with authorized distributors to confirm current availability and compliance with regional safety standards.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the system's peak inrush energy requirements not exceeding 125 joules and the continuous load current staying within the 5-amp limit. Evaluate the ambient operating temperature range to ensure the NTC characteristic curve provides sufficient impedance during startup. Confirm that the 22mm diameter and kinked leads fit the physical constraints of the printed circuit board layout.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL22 series of inrush current limiters manufactured by Vishay Ametherm. The series is engineered for general-purpose electronic equipment requiring reliable surge suppression. These devices are widely utilized in consumer and industrial electronics where stable power delivery and component longevity are critical operational priorities.

Inrush Current Limiters (ICL) Replacement Considerations

The MS2220005 is a comparable alternative within the same product family offering similar electrical specifications. Verify mechanical dimensions and lead configurations before substitution to ensure compatibility with existing tooling and assembly processes.