MF73T-1 1/32

Inrush Current Limiters (ICL) Overview

The Cantherm MF73T-1 1/32 is an inrush current limiter (ICL) designed for electronic circuit protection. It features a resistance of 1 Ohm with a tolerance of ±20%. The device supports a maximum steady-state current of 32 Amperes and has a physical diameter of 1.181 inches (30.00mm). This component belongs to the MF73T series, utilizing NTC thermistor technology to limit initial surge currents during power-up.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective inrush current limiting to protect sensitive components
• Utilizes negative temperature coefficient thermistor technology
• Features cylindrical package design for easy mounting

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Electronic equipment surge protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix variant matches the required current rating and resistance value. Confirm lead times as they may vary by distributor. Ensure the thermal environment allows for proper heat dissipation during operation. Check datasheet for derating curves if operating near maximum limits.

Inrush Current Limiters (ICL) Selection Notes

Select based on the peak inrush current and steady-state current requirements of the target application. Consider the ambient temperature range and thermal time constant. Ensure the physical dimensions fit within the available space on the PCB or chassis. Verify compatibility with the system's voltage ratings.

Inrush Current Limiters (ICL) Part Context

This part is part of Cantherm's MF73T series of inrush current limiters. These devices are commonly used in AC/DC converters and power supplies. The series offers various resistance and current ratings to suit different power levels. They are essential for preventing fuse blowing and contact welding during startup.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes must match the 1 Ohm resistance, 32A current rating, and 30mm diameter. Verify that alternative NTC thermistors have similar thermal characteristics and holding current capabilities. Cross-reference with other manufacturers' ICL series for equivalent performance specifications.