MF72-003D20

Inrush Current Limiters (ICL) Overview

The Cantherm MF72-003D20 is a leaded Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter (ICL). It features a nominal resistance of 3 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 8 A and operates within an AC voltage range of 120 to 240 V. It has a disc diameter of 0.886 inches (22.50 mm) and a minimum operating temperature of -55°C, extending up to 200°C.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up sequences
• Automatically transitions from high resistance to low resistance as temperature increases
• Supports continuous operation under standard AC line voltages

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Motor drive protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific manufacturer datasheet for the MF72 series to confirm thermal characteristics and energy absorption ratings. Ensure the selected component meets the required steady-state current and peak surge current specifications for the target circuit design. Cross-reference official documentation for RoHS compliance status and mounting requirements.

Inrush Current Limiters (ICL) Selection Notes

Select this part based on the required 3 Ohm initial resistance and 8 A steady-state current capacity. Consider the 22.50 mm diameter for adequate heat dissipation and physical clearance. Evaluate the application's AC voltage rating against the component's 240 V limit to ensure safe operation under all expected conditions.

Inrush Current Limiters (ICL) Part Context

This component belongs to the MF72 series of inrush current limiters manufactured by Cantherm. These devices utilize NTC ceramic materials to protect electronic equipment from damaging startup currents. The series offers various resistance and current ratings to suit different power levels and system requirements.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.