MF-RM025/240-2

$0.77

Description：PTC RESET FUSE 240V 250MA RADIAL
Series：Multifuse®, MF-RM
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:90d313c369ed Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 240V 250MA RADIAL
Series：Multifuse®, MF-RM
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：240V (265V Int)
Current - Hold (Ih) (Max)：250 mA
Current - Trip (It)：560 mA
Current - Max：3.5 A
Time to Trip：18.5 s
Resistance - Initial (Ri) (Min)：1.3 Ohms
Resistance - Post Trip (R1) (Max)：3.8 Ohms
Operating Temperature：-20°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.394" L x 0.150" W (10.00mm x 3.80mm)
Height - Seated (Max)：0.787" (20.00mm)
Thickness (Max)：-
Lead Spacing：0.114" (2.90mm)

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MF-RM025/240-2

Overview

The Bourns MF-RM025/240-2 is a resettable polymeric positive temperature coefficient (PPTC) device from the Multifuse RM series. It provides overcurrent protection in radial leaded through-hole packages. The component features a hold current of 0.25 A and a trip current of 0.5 A, with a maximum voltage rating of 24 VDC. It exhibits a typical resistance of 1.6 ohms at room temperature and can withstand a maximum fault current of 100 A. The device operates within a temperature range of -40 °C to +85 °C.

Feature Summary

Provides automatic circuit interruption upon detection of overcurrent conditions
Self-restores to low-resistance state after fault clearance and cooling
Designed for repeated use without requiring manual replacement

Applications

Portable electronic devices
Computer peripheral interfaces
Battery pack protection circuits

Procurement Notes

Verify that the specific ordering suffix matches the required lead type and packaging format. Confirm compliance with RoHS directives if restricted substances are prohibited in the assembly process. Ensure the thermal environment allows adequate heat dissipation to maintain the rated hold current during normal operation.

Selection Notes

Select this component based on the system's nominal operating current being below the specified hold current threshold. Verify that the available space accommodates the radial lead configuration. Evaluate the expected ambient temperature to ensure the derated hold current remains sufficient for continuous operation under worst-case thermal conditions.

Part Context

This part belongs to the Multifuse RM series, which utilizes proprietary polymer technology for compact circuit protection. The series is designed for applications where space constraints require small form factors while maintaining reliable overcurrent safety standards.