AS3220010

Overview

The AS3220010 is an NTC inrush current limiter from the AS series, manufactured by Vishay Ametherm. It features a resistance of 20 Ohms with a tolerance of ±25% at 25°C and supports a maximum steady-state current of 10 A. The component has a disc diameter of 1.142 inches (29.00 mm) and a lead spacing of 0.748 inches (19.00 mm). It is designed to withstand high input energy levels.

Feature Summary

• Recognized by Underwriters Laboratories for safety compliance
• Designed to withstand high steady-state current loads
• Absorbs and minimizes high input energy during startup

Applications

• Transformer inrush current limiting
• Power supply circuit protection
• Electronic equipment startup surge suppression

Procurement Notes

Verify the specific package dimensions and lead spacing against your PCB footprint requirements before ordering. Confirm that the 20 Ohm initial resistance and 10 Amp steady-state current rating align with your system's electrical specifications. Ensure compatibility with RoHS3 standards if required by your manufacturing process.

Selection Notes

Select this component when designing circuits requiring robust inrush current suppression for transformers or power supplies. The 20 Ohm resistance value provides effective limiting for moderate energy applications. Consider the physical size constraints due to the 29.00 mm diameter when arranging components on the board layout.

Part Context

This part belongs to the AS series of NTC thermistors specifically engineered as inrush current limiters. Vishay Ametherm manufactures these components to provide reliable protection against high transient currents during power-up phases in various electronic systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify electrical parameters such as resistance, current rating, and physical dimensions when evaluating alternative components from other manufacturers.