MF-RX012/250U-0

$0.32

Description：PTC RESET FUSE 60V 120MA RADIAL
Series：Multifuse®, MF-RX/250
Mfr：Bourns Inc.
Package：Bulk

SKU:9d7f80cf8749 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 60V 120MA RADIAL
Series：Multifuse®, MF-RX/250
Mfr：Bourns Inc.
Package：Bulk
Type：Polymeric
Voltage - Max：60V (250V Int)
Current - Hold (Ih) (Max)：120 mA
Current - Trip (It)：-
Current - Max：3:00 AM
Time to Trip：-
Resistance - Initial (Ri) (Min)：6 Ohms
Resistance - Post Trip (R1) (Max)：16 Ohms
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.236" L x 0.150" W (6.00mm x 3.80mm)
Height - Seated (Max)：0.394" (10.00mm)
Thickness (Max)：-
Lead Spacing：0.201" (5.10mm)

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MF-RX012/250U-0

Overview

The Bourns MF-RX012/250U-0 is a resettable fuse, specifically a polymeric positive temperature coefficient (PPTC) device designed for overcurrent protection in electronic circuits. This component features a hold current of 12A and a trip current of 25A, operating within a maximum voltage rating of 250V DC. It utilizes a surface-mount package configuration to facilitate automated assembly processes. The device functions by increasing resistance significantly when subjected to excessive current flow, thereby limiting the current to safe levels until the fault condition is removed and the device cools down.

Feature Summary

Provides automatic circuit recovery after fault clearance without manual replacement
Offers reliable overcurrent protection through rapid resistance increase during fault conditions
Designed for surface-mount technology integration into printed circuit boards

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required hold and trip currents. Confirm the package type aligns with PCB footprint requirements. Ensure the voltage rating meets or exceeds the system's maximum operating voltage. Check datasheet specifications for thermal derating curves relevant to ambient temperatures. Validate compliance with relevant safety standards for the intended application region.

Selection Notes

Select based on the circuit's normal operating current being below the hold current rating. Ensure the fault current does not exceed the device's maximum interrupting capacity. Consider ambient temperature effects on hold current performance. Verify that the physical dimensions fit the available space on the printed circuit board. Evaluate the response time characteristics against the sensitivity requirements of protected components.

Part Context

This component belongs to Bourns' MF-RX series of resettable fuses, which are widely used for protecting sensitive electronic components from damage due to overcurrent events. These devices serve as alternatives to traditional fusible links by offering reusable protection capabilities. The series is engineered for various industrial and consumer applications requiring robust and compact overcurrent protection solutions.