MF72-004D9-STRAIGHT

Inrush Current Limiters (ICL) Overview

The Cantherm MF72-004D9-STRAIGHT is a negative temperature coefficient (NTC) thermistor designed as an inrush current limiter (ICL). It features a nominal resistance of 4 Ohms with a tolerance of ±20% at 25°C. The component supports a maximum steady-state current of 3 A and has a physical diameter of 0.433 inches (11.00 mm).

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up sequences.
• Utilizes NTC material properties to automatically adjust resistance based on temperature changes.
• Features a straight lead configuration for straightforward through-hole mounting.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitor charging protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'STRAIGHT' against official datasheets to confirm lead orientation, as standard variants may differ. Ensure the selected component meets the required steady-state current rating of 3 A for the target application circuit without exceeding thermal limits.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 4 Ohm initial resistance is required to limit surge current in low-power AC or DC applications. Confirm that the 11.00 mm diameter fits within the available board space and that the straight lead style aligns with the assembly process requirements.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MF72 series of inrush current limiters manufactured by Cantherm. The series is characterized by its ability to protect sensitive electronic components from damage caused by high initial charging currents. The MF72 series is widely used in consumer electronics and industrial power supplies.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include MF72-004D9 and B57211P0409M301. Verify that alternative parts match the 4 Ohm resistance, 3 A current rating, and 11.00 mm diameter specifications before implementation.