MF-RX065/72-2-17

Overview

The Bourns MF-RX065/72-2-17 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-RX/72 series. It features a hold current of 0.65 A and a trip current of 1.3 A at 25°C ambient. The device supports a maximum voltage of 72 VDC and a maximum fault current of 40 A. It operates within a temperature range of -40°C to +85°C, with a typical initial resistance of approximately 0.19 ohms. The component utilizes a through-hole mounting style suitable for PCB integration.

Feature Summary

• Provides automatic circuit protection against overcurrent conditions by increasing resistance when heated.
• Offers reusable functionality by resetting to low resistance after the fault condition is removed and the device cools.
• Features a compact radial leaded package designed for direct printed circuit board mounting.

Applications

• Overcurrent protection for portable electronic devices
• Protection circuits in battery-powered equipment
• Interface protection for communication ports

Procurement Notes

Verify the specific suffix '-2-17' to confirm the reel packaging configuration, as ordering suffixes define the quantity per container. Ensure the selected variant matches the required hold and trip current ratings for the target application circuit. Confirm RoHS compliance status through official manufacturer documentation prior to procurement.

Selection Notes

Select this component when a 0.65 A hold current and 72 VDC rating are required for radial PTC applications. Consider the thermal environment, as trip times vary significantly with ambient temperature. Evaluate the maximum fault current capability of 40 A to ensure the fuse can withstand the prospective short-circuit current without damage.

Part Context

This part belongs to the Bourns Multifuse MF-RX/72 series, which provides general-purpose circuit protection. The series offers various hold current options in a standardized radial form factor. These components serve as alternatives to traditional fuses where reusability and space constraints are critical design factors.

Replacement Considerations

Direct replacements must match the 0.65 A hold current, 72 VDC voltage rating, and radial leaded package. Verify that substitute parts meet the same UL certification and RoHS requirements. Cross-reference trip characteristics to ensure equivalent performance under fault conditions.