MS22 20005-A

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm MS22 20005-A is a Negative Temperature Coefficient (NTC) thermistor belonging to the MegaSurge MS22 series, designed for inrush current limiting applications. It features a 22mm disc size with a zero-power resistance of 20 Ohms at 25°C and a tolerance of ±25%. The component supports a maximum steady-state current of 5.0 A up to 65°C and includes an 'A' suffix indicating specific lead configuration or packaging variations within the series.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to suppress high inrush current surges during power-up
• Designed for PCB mounting with radial termination style
• Capable of handling voltage ratings across 120 VAC, 240 VAC, 480 VAC, and 680 VAC systems

Inrush Current Limiters (ICL) Applications

• Power control boxes requiring DIN block compatibility
• Electronic equipment protection against startup current spikes
• Industrial power supply input stages

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific meaning of the '-A' suffix against official Vishay documentation, as it may denote lead form or packaging differences rather than electrical changes. Confirm RoHS compliance status and ensure the 5A steady-state rating aligns with thermal management requirements in the target application environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 20 Ohm initial resistance is required to limit surge currents for loads drawing up to 5 Amps continuously. Ensure the operating temperature range accommodates the self-heating effects during repeated cycling. Compare with the standard MS2220005 if the '-A' variant offers no distinct functional advantage for the specific mechanical constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Vishay Ametherm MegaSurge MS22 series of inrush current limiters. These components are widely used in power electronics to protect downstream circuits from the high transient currents generated by charging capacitive loads or transformer magnetization during initial energization.

Inrush Current Limiters (ICL) Replacement Considerations

The MS2220005 serves as a primary equivalent within the same series. Verify that alternative NTC limiters match the 20 Ohm resistance, 5A current rating, and 22mm physical dimensions to ensure mechanical fit and electrical performance parity.