MF-RX050/72-AP

Overview

The Bourns MF-RX050/72-AP is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-RX/72 series. Designed for overcurrent protection, this component features a hold current of 500 mA and a trip current of 1 A at ambient temperature. It supports a maximum voltage of 72 VDC with a maximum fault current rating of 40 A. The device exhibits a typical resistance of 600 mOhms and handles a power dissipation of 500 mW. It operates within a temperature range of -40°C to +85°C, utilizing a 5.1 mm lead spacing in an ammo pack configuration.

Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Utilizes polymer PTC technology for robust performance in high-voltage environments
• Eliminates nuisance tripping caused by ambient temperature variations

Applications

• Overcurrent protection for automotive electronic circuits
• Surge and overload protection in industrial communication equipment
• Safety system circuit protection in consumer electronics

Procurement Notes

Verify that the specific suffix AP corresponds to the Ammo Pack packaging format as documented in official manufacturer specifications. Confirm that the 72VDC rating aligns with the target application's maximum operating voltage requirements. Ensure the radial lead pitch matches the PCB layout constraints. Cross-reference the datasheet for any updates regarding RoHS compliance status or material declarations before finalizing procurement orders.

Selection Notes

Select this component when applications require a 500 mA hold current with a 72 VDC maximum voltage rating. The radial leaded package facilitates through-hole mounting on printed circuit boards. Consider the 40 A maximum fault current capability for scenarios involving potential short-circuit conditions. Verify that the 500 mW power dissipation rating suits the thermal environment of the installation site.

Part Context

This part belongs to the Bourns Multifuse MF-RX/72 series, which specializes in high-voltage polymeric resettable fuses. The series is engineered for harsh environments, offering reliable protection against overcurrent events. The MF-RX designation indicates a radial leaded form factor designed for general-purpose circuit protection across various industrial and commercial sectors.

Replacement Considerations

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