MF72-022D11

Inrush Current Limiters (ICL) Overview

The Cantherm MF72-022D11 is a negative temperature coefficient (NTC) thermistor designed as an inrush current limiter (ICL). It features a nominal resistance of 22 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 2 A and exhibits a hot resistance of 92 mOhms. Physically, it has a diameter of 0.512 inches (13.00 mm) and a lead spacing of 0.295 inches (7.50 mm). The device operates within a temperature range of -55°C to 200°C.

Inrush Current Limiters (ICL) Feature Summary

• Functions as a resettable inrush current limiter to protect electronic circuits from high initial charging currents.
• Utilizes NTC thermistor technology to provide low steady-state power dissipation after the initial surge phase.
• Constructed for through-hole mounting with axial leads suitable for standard PCB layouts.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary windings
• Capacitor bank charging circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific electrical parameters against the official manufacturer datasheet before integration. Confirm that the thermal environment allows for proper heat dissipation during the steady-state operation phase. Ensure the mechanical dimensions match the target PCB footprint requirements.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 22 Ohm initial resistance and 2 A continuous current rating are required. Compare the B-value characteristics and thermal time constants against alternative ICLs to ensure compatibility with the system's charging profile. Validate that the package size fits within the available board space constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MF72 series of power NTC thermistors manufactured by Cantherm. The series is specifically engineered for circuit protection applications where limiting inrush current is critical. The MF72 design balances effective surge suppression with minimal energy loss during normal operation.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include parts with matching 22 Ohm resistance, 2 A current rating, and 13 mm diameter. Verify that any replacement maintains the same thermal class and lead configuration to ensure mechanical and electrical compatibility.