MF-RX135/72-AP

Ptc Resettable Fuses Overview

The Bourns MF-RX135/72-AP is a radial leaded polymer positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-RX/72 series. Designed for overcurrent protection, it features a maximum voltage rating of 72 VDC and a hold current of 1.35 A. The device trips at 2.70 A with a maximum trip time of 12.6 seconds. It exhibits a minimum resistance of 0.14 ohms and a maximum resistance of 280 milliohms. Rated for operation between -40°C and +85°C, it dissipates up to 1.0 W and carries UL and RoHS certifications.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Utilizes polymer PTC technology for robust performance in high-voltage environments
• Offers compact radial leaded packaging suitable for PCB mounting

Ptc Resettable Fuses Applications

• Overcurrent protection for automotive electronic circuits
• Surge and overload protection in consumer electronics
• Protection for industrial instrumentation and control systems
• Safety compliance in telecommunications equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix AP against official Bourns documentation to confirm packaging configuration. Ensure the selected variant matches the required hold and trip currents for the target application. Cross-reference certification marks such as UL or RoHS status directly with the manufacturer's datasheet to guarantee regulatory compliance before integration into final products.

Ptc Resettable Fuses Selection Notes

Select this component when a 72 VDC maximum voltage rating is required alongside a 1.35 A hold current. The radial leaded form factor supports through-hole PCB assembly. Consider the thermal environment, as the operating range extends to -40°C. Verify that the 2.70 A trip threshold aligns with the protected circuit's surge tolerance requirements.

Ptc Resettable Fuses Part Context

This part belongs to the Bourns Multifuse MF-RX/72 series, which utilizes a specialized 125°C polymer PTC element. The series is engineered for high-voltage applications requiring reliable overcurrent protection. The radial leaded design provides flexibility for designers working with space-constrained layouts compared to surface mount alternatives.

Ptc Resettable Fuses FAQ

What is the maximum voltage rating for the MF-RX135/72-AP?

The maximum voltage rating is 72 VDC.

Does this component require manual replacement after tripping?

No, it is a resettable fuse that automatically recovers once the fault condition is removed and the device cools down.