MF-RX185-2

Description：PTC RESET FUSE 60V 1.85A RADIAL
Series：Multifuse®, MF-RX
Mfr：Bourns Inc.
Package：Tape & Reel (TR)

SKU:1ffeb8c2ee13 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 60V 1.85A RADIAL
Series：Multifuse®, MF-RX
Mfr：Bourns Inc.
Package：Tape & Reel (TR)
Type：Polymeric
Voltage - Max：60V
Current - Hold (Ih) (Max)：1.85 A
Current - Trip (It)：3.7 A
Current - Max：40 A
Time to Trip：12.6 s
Resistance - Initial (Ri) (Min)：80 mOhms
Resistance - Post Trip (R1) (Max)：190 mOhms
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.701" L x 0.122" W (17.80mm x 3.10mm)
Height - Seated (Max)：0.902" (22.90mm)
Thickness (Max)：-
Lead Spacing：0.201" (5.10mm)

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MF-RX185-2

Overview

The MF-RX185-2 is a radial leaded PTC resettable fuse manufactured by Bourns Inc. It features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 72 VDC. The device has a maximum fault current rating of 40 A and an initial resistance of 120 mΩ. It operates within a temperature range of -40°C to +85°C and utilizes a cured, flame retardant epoxy polymer insulating material that meets UL 94V-0 requirements.

Feature Summary

Radial leaded construction for through-hole PCB mounting
Cured, flame retardant epoxy polymer insulating material
Agency recognition compliant with safety standards

Applications

Overcurrent protection in electronic circuits
Power supply line protection
Portable electronics safeguarding

Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm availability of authorized substitutes or alternative package types from Bourns. Ensure replacement parts meet identical electrical specifications and mechanical dimensions for seamless integration into existing designs without re-validation.

Selection Notes

Select this component for applications requiring high-current resettable protection with radial leads. Consider the 72 VDC rating and 1.85 A hold current for appropriate circuit matching. Evaluate thermal derating requirements based on the -40°C to +85°C operating range. Verify agency recognition compliance for target market regulations.

Part Context

This part belongs to the MF-RX series of PTC resettable fuses from Bourns. The series offers various hold currents and voltage ratings for diverse overcurrent protection needs. The MF-RX185-2 specifically provides a 1.85 A hold current capability within the 72 VDC family, utilizing standard radial packaging for easy assembly.