MF-RX110-2

Overview

The Bourns MF-RX110-2 is a polymeric PTC resettable fuse from the Multifuse MF-RX series. It features a maximum voltage of 60 VDC and a hold current of 1.1 A, with a trip current of 2.2 A. The device offers a maximum fault current rating of 40 A and has a typical resistance of 150 mOhms. Designed for PCB mounting via radial leads, it operates within a temperature range of -40°C to +85°C. The component is supplied in tape and reel packaging.

Feature Summary

• Polymeric positive temperature coefficient construction for automatic circuit protection
• Radial leaded through-hole design suitable for printed circuit board mounting
• Self-resetting functionality eliminates the need for manual replacement after fault clearance

Applications

• Overcurrent protection for portable electronic devices
• Protection circuits in automotive electronics systems
• Industrial control equipment power line safeguarding

Procurement Notes

Verify that the specific part number suffix matches the required packaging configuration, as standard variants may differ in reel specifications. Confirm that the 60VDC rating aligns with the target circuit's maximum operating voltage. Ensure the radial lead pitch meets the printed circuit board layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a through-hole solution is required for moderate current applications up to 1.1A. The 60VDC rating distinguishes it from higher voltage radial variants like the 72V models. Consider the 150 mOhms resistance for low-power loss requirements in sensitive signal or power lines where surface mount options are unsuitable.

Part Context

This component belongs to the Bourns Multifuse MF-RX family of resettable fuses. The series provides reliable overcurrent protection using polymeric technology. The MF-RX110-2 specifically utilizes a radial package format, differentiating it from surface mount counterparts within the broader product portfolio designed for various industrial and consumer electronics markets.

Replacement Considerations

Direct substitutes include other MF-RX series parts with identical 1.1A hold current and 60VDC ratings. Verify lead spacing and physical dimensions to ensure mechanical compatibility with existing footprints.