MF73T-1 5/17

Inrush Current Limiters (ICL) Overview

The Cantherm MF73T-1 5/17 is an NTC inrush current limiter designed for surge protection. It features a nominal resistance of 5 Ohms with a tolerance of ±20%. The device supports a maximum steady-state current of 17 A and has a physical diameter of 1.181 inches (30.00mm). This component utilizes thermistor technology to limit initial current spikes during power-up, ensuring reliable operation within its specified electrical and thermal parameters.

Inrush Current Limiters (ICL) Feature Summary

• Provides high material constant (B value) for effective temperature-dependent resistance characteristics
• Delivers low residual resistance to minimize power loss during steady-state operation
• Supports high steady-state current capacity for long-term reliability in power circuits

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer inrush current limiting
• Surge current protection in electronic equipment

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure correct resistance and current ratings. Confirm RoHS compliance status and lead-free manufacturing details prior to procurement. Cross-reference the part number with authorized distributors to validate authenticity and avoid counterfeit components.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required nominal resistance and maximum steady-state current for the target application circuit. Ensure the operating temperature range and thermal time constants align with the system's duty cycle and environmental conditions. Evaluate the physical package dimensions for adequate PCB spacing and heat dissipation requirements.

Inrush Current Limiters (ICL) Part Context

The MF73T-1 series represents Cantherm's line of small-size, high-power inrush current limiters. These NTC thermistors are engineered for reliable surge current protection in various industrial and commercial applications. The series emphasizes compact form factors combined with robust electrical performance for efficient power management.

Inrush Current Limiters (ICL) Replacement Considerations

Consult official substitution lists for equivalent NTC inrush current limiters with matching resistance and current ratings. Verify that alternative components meet the same thermal and electrical specifications before implementation.