MF-R250-2

Overview

The Bourns MF-R250-2 is a radial leaded PolySwitch resettable fuse from the MF-R series, designed for overcurrent protection in electronic circuits. It features a hold current of 2.5 A and a trip current of 5 A at a maximum voltage of 30 V. The device exhibits a typical resistance of 48 mΩ and operates within a temperature range of -40°C to +85°C. With a lead spacing of 5.1 mm, it supports PCB mounting and is available in bulk packaging.

Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers reliable overcurrent protection through positive temperature coefficient behavior
• Supports standard PCB mounting with radial leads for easy integration

Applications

• Consumer electronics power supply input protection
• Portable device battery circuit safeguarding
• Industrial control board overcurrent defense

Procurement Notes

Verify that the specific part number matches the required electrical ratings, particularly the 2.5 A hold current and 30 V maximum voltage. Confirm the package type corresponds to radial leaded construction with 5.1 mm spacing. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference datasheet specifications against application thermal constraints to guarantee proper operation within the -40°C to +85°C range.

Selection Notes

Select this component when designing circuits requiring resettable protection for low-voltage applications up to 30 V. The 2.5 A rating suits moderate current loads where frequent tripping must be avoided under normal operating conditions. Consider the 48 mΩ resistance impact on power loss during normal operation. Evaluate thermal dissipation requirements given the radial leaded form factor and ambient temperature limits.

Part Context

This part belongs to the MF-R series of resettable fuses manufactured by Bourns Inc. The series provides cost-effective overcurrent protection solutions for various electronic assemblies. These devices utilize polymer technology to balance high conductivity with rapid response to fault conditions, serving as a robust alternative to traditional one-time fuses in modern circuit designs.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.