MF-RX065/72-AP-17

Overview

The Bourns MF-RX065/72-AP-17 is a polymeric resettable fuse (PPTC) from the Multifuse MF-RX/72 series, designed for radial PCB mounting. It features a maximum voltage rating of 72 VDC and a hold current of 0.65 A. The device trips at 1.3 A with a typical time of 5.3 seconds. It has a maximum trip current of 40 A and an initial resistance of 195 mΩ. Power dissipation is rated at 1.0 W within an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides automatic circuit protection through reversible thermal response to overcurrent conditions
• Ensures compliance with automotive reliability standards via AEC-Q200 qualification
• Facilitates automated assembly processes through standard radial leaded packaging

Applications

• Automotive electronic circuits requiring 72V system protection
• Consumer electronics power input stages
• Industrial control board overcurrent safeguarding

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the required radial leaded configuration for your PCB layout. Ensure the selected variant meets all necessary environmental certifications for your specific application region. Cross-reference the part number suffix to guarantee correct packaging quantity and handling requirements.

Selection Notes

Select this component when designing circuits that require robust overcurrent protection in space-constrained applications. The radial leaded format supports both manual and automated insertion methods. Consider the 72VDC rating for compatibility with higher voltage DC systems. Evaluate the 0.65A hold current against normal operational loads to prevent nuisance tripping during steady-state operation.

Part Context

This device belongs to the Bourns Multifuse MF-RX family, specialized for compact circuit protection. The /72 designation indicates suitability for 72VDC systems, distinguishing it from lower voltage variants. The AP-17 suffix specifies the ammo pack tape and reel packaging format, optimizing storage and high-volume manufacturing integration.

Replacement Considerations

Direct substitutes include other Bourns MF-RX series parts with matching 0.65A hold current and 72V rating. Verify lead spacing and physical dimensions to ensure mechanical fit. Check trip characteristics and power dissipation limits to maintain equivalent thermal performance in the target circuit.