MF-RX135/72-2

$0.45

Description：PTC RESET FUSE 72V 1.35A RADIAL
Series：Multifuse®, MF-RX/72
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:926c81d42a4c Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 72V 1.35A RADIAL
Series：Multifuse®, MF-RX/72
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：72V
Current - Hold (Ih) (Max)：1.35 A
Current - Trip (It)：2.7 A
Current - Max：40 A
Time to Trip：9.6 s
Resistance - Initial (Ri) (Min)：120 mOhms
Resistance - Post Trip (R1) (Max)：300 mOhms
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.483" L x 0.122" W (12.26mm x 3.10mm)
Height - Seated (Max)：0.718" (18.26mm)
Thickness (Max)：-
Lead Spacing：0.201" (5.10mm)

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MF-RX135/72-2

Overview

The Bourns MF-RX135/72-2 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-RX/72 series. Designed for PCB mounting, this component provides overcurrent protection with a maximum voltage rating of 72 VDC. It features a hold current of 135 mA and a trip current of 270 mA. The device exhibits a maximum resistance of 1.95 ohms and operates within a temperature range of -40°C to +85°C. Physical dimensions include a diameter of 7.4 mm and a height of 12.7 mm, with a lead spacing of 5.1 mm.

Feature Summary

Provides automatic circuit interruption upon detection of excessive current flow
Restores normal conductivity after cooling down following fault removal
Offers repeated protection cycles without requiring replacement

Applications

Consumer electronics power supply circuits
Portable computing devices and peripherals
Telecommunications equipment input protection

Procurement Notes

Verify that the specific part number suffix matches the required packaging configuration, as variations exist between reel and ammo pack formats. Confirm compliance requirements such as UL recognition or RoHS status against the official datasheet for the exact manufacturing batch. Ensure the thermal environment supports the specified operating temperature range during installation.

Selection Notes

Select this component when circuit protection requires a 72VDC maximum rating with a 135mA hold current threshold. Consider the radial leaded package for through-hole PCB assembly where space constraints allow for the specified physical dimensions. Evaluate the trip time characteristics against the protected load's surge tolerance to ensure appropriate response speed.

Part Context

This device belongs to the Bourns Multifuse MF-RX/72 series of PTC resettable fuses. The series is characterized by low resistance values and compact radial packages suitable for dense board layouts. These components serve as reusable alternatives to traditional one-time fuses in various electronic applications requiring reliable overcurrent protection.