MF-RX135

Overview

The Bourns MF-RX135 is a high-temperature polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-USHT series. Designed for robust circuit protection, this component operates reliably in demanding thermal environments. It functions as a self-resetting overcurrent protector, offering a durable alternative to traditional one-time fuses. The device maintains stable performance characteristics under elevated temperatures, ensuring consistent protection for sensitive electronic circuits without requiring manual replacement after tripping events.

Feature Summary

• High-temperature operation capability suitable for demanding thermal environments
• Self-resetting functionality eliminates the need for manual fuse replacement
• Polymeric positive temperature coefficient construction provides reliable overcurrent protection

Applications

• Automotive electronics systems
• Industrial control equipment
• Communication infrastructure

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with Bourns Inc. or authorized distributors before procurement. Confirm that the component meets all relevant automotive or industrial qualification standards required for your specific application environment. Ensure proper handling procedures are followed during storage and assembly to maintain device integrity.

Selection Notes

Select this component when high-temperature resilience and self-resetting capabilities are required. Evaluate the hold current and trip current parameters against your circuit's normal operating conditions. Consider the physical package size and mounting requirements relative to your PCB layout constraints. Verify compatibility with your system's voltage ratings and thermal management strategies.

Part Context

This part belongs to the MF-USHT series of high-temperature PPTC resettable fuses manufactured by Bourns Inc. The series is engineered for applications requiring enhanced thermal stability compared to standard PPTC devices. Bourns is a recognized supplier of circuit protection components, including fuses, varistors, and thermistors, serving various industrial and automotive sectors.

Replacement Considerations

Consult official Bourns documentation for verified substitute part numbers. Do not assume interchangeability with other PPTC brands or series without verifying electrical and thermal specifications. Check for any design changes recommended by the manufacturer for legacy product transitions.