MF72-030D9

Inrush Current Limiters (ICL) Overview

The Cantherm MF72-030D9 is an inrush current limiter (ICL) from the MF72 series, designed for circuit protection. It features a nominal resistance of 30 Ohms with a tolerance of ±20% at 25°C. The component supports a maximum steady-state current of 1 A and has a physical diameter of 0.433 inches (11.00 mm). It utilizes radial leads with a spacing of 0.295 inches (7.50 mm) for through-hole mounting.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective inrush current limiting to protect downstream components during power-up
• Features a compact radial package suitable for space-constrained PCB layouts
• Designed for reliable operation within specified thermal limits

Inrush Current Limiters (ICL) Applications

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

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix D9 corresponds to the 11mm diameter and 1A rating when sourcing. Confirm RoHS3 compliance status with the supplier. Check lead length specifications against board layout requirements. Ensure the manufacturer part number matches exactly to avoid variant confusion.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required 30 Ohm initial resistance and 1A continuous current capacity. Evaluate the thermal dissipation capabilities relative to the application's duty cycle. Consider the physical dimensions for adequate clearance on the target printed circuit board.

Inrush Current Limiters (ICL) Part Context

This device belongs to the MF72 series of negative temperature coefficient thermistors used as inrush current limiters. The series offers various resistance values and physical sizes to accommodate different power levels and form factors in electronic equipment.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitutes include TDK B57211P0309M301 and Vishay Ametherm SL125R003. Verify electrical parameters and mechanical footprint compatibility before substitution.