MF72-033D11

Inrush Current Limiters (ICL) Overview

The Cantherm MF72-033D11 is a negative temperature coefficient (NTC) thermistor designed as an inrush current limiter (ICL). It features a nominal resistance of 33 Ohms with a tolerance of ±20% at 25°C. The component supports a maximum steady-state current of 1.5 Amperes and has a maximum operating temperature of 200°C. Its physical dimensions include a diameter of 13mm and a lead pitch of approximately 7.5mm, suitable for through-hole mounting.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to limit initial surge currents during power-up
• Provides automatic reset functionality after the device cools down
• Designed for robust thermal performance with high maximum operating temperatures

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer protection circuits
• Motor drive inrush limiting

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific resistance tolerance and current rating requirements against the application datasheet. Confirm that the physical package dimensions and lead pitch are compatible with the target PCB layout. Ensure the thermal management strategy accounts for the self-heating characteristics during steady-state operation to maintain reliability.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a compact, cost-effective solution for inrush current suppression is required. Consider the 33 Ohm starting resistance and 1.5A capacity relative to the system's peak load. Evaluate the thermal dissipation capabilities within the enclosure to ensure the device remains within its specified operating temperature range during continuous use.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MF72 series of power NTC thermistors manufactured by Cantherm. The series is widely used for protecting electronic equipment from damaging surge currents. The MF72 designation indicates a specific form factor and electrical characteristic set optimized for general-purpose inrush limiting applications.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes may include other 33 Ohm, 1.5A ICLs from manufacturers like TDK or Vishay, provided they match the 13mm diameter and 7.5mm lead pitch. Verify equivalent B-value and energy absorption ratings before substitution.