MF-RX250-AP

Overview

The Bourns MF-RX250-AP is a radial-leaded PTC resettable fuse from the Multifuse MF-RX series, designed for circuit protection in low-voltage applications. It features a hold current of 2.5A and a trip current of 5A, with a maximum voltage rating of 60V. The device has a power dissipation of 2.5W and an initial resistance of 0.05 Ohms. It offers a maximum fault current rating of 40A and a typical trip time of 15.6 seconds. The component measures 17.84mm in length, 3.10mm in width, and 23.84mm in height, with a lead spacing of 10.20mm.

Feature Summary

• Provides automatic resettable overcurrent protection for electronic circuits
• Radial leaded construction suitable for through-hole mounting
• Designed for use in low-voltage power supply systems

Applications

• Low-voltage power supply circuit protection
• Telecommunications equipment protection
• Consumer electronics overcurrent safeguarding

Procurement Notes

Verify the specific suffix AP indicates the absence of insulation coating as per Bourns documentation. Confirm that the component matches the required radial lead dimensions and voltage ratings for the target application. Ensure compatibility with existing PCB layouts regarding lead spacing and physical footprint constraints before finalizing procurement decisions.

Selection Notes

Select this component when a 2.5A hold current and 60V maximum voltage rating are required for radial-mounted protection. Consider the 0.05 Ohm initial resistance and 2.5W power dissipation limits for thermal management. Evaluate the 15.6-second trip time against the system's surge tolerance requirements to ensure appropriate response characteristics for the intended circuit design.

Part Context

This part belongs to the Bourns Multifuse MF-RX series, which specializes in telecom-grade PTC resettable fuses. The series provides reliable overcurrent protection solutions for various electronic applications. The MF-RX250-AP variant specifically addresses needs for moderate current protection with radial leaded packaging, distinguishing it from surface mount or higher voltage variants within the broader product family.

Replacement Considerations

MF-RX250/72-AP

FAQ

What does the 'AP' suffix indicate for this component?

The 'U' suffix typically indicates a product without insulation coating; verify if 'AP' follows similar nomenclature conventions for uncoated variants in official datasheets.

Is this component suitable for high-temperature environments?

Standard MF-RX series components are designed for general telecom applications; consult the datasheet for specific temperature coefficients and operating range limitations.