MF-RX135/72-AP

$0.26

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

SKU:52e983aacfc4 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 & Box (TB)
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-AP

Overview

The Bourns MF-RX135/72-AP is a radial leaded polymer positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-RX/72 series. Designed for overcurrent protection, it features a maximum voltage rating of 72 VDC and a hold current of 1.35 A. The device trips at 2.70 A with a maximum trip time of 12.6 seconds. It exhibits a minimum resistance of 0.14 ohms and a maximum resistance of 280 milliohms. Rated for operation between -40°C and +85°C, it dissipates up to 1.0 W and carries UL and RoHS certifications.

Feature Summary

Provides automatic circuit recovery after fault clearance without manual replacement
Utilizes polymer PTC technology for robust performance in high-voltage environments
Offers compact radial leaded packaging suitable for PCB mounting

Applications

Overcurrent protection for automotive electronic circuits
Surge and overload protection in consumer electronics
Protection for industrial instrumentation and control systems
Safety compliance in telecommunications equipment

Procurement Notes

Verify the specific suffix AP against official Bourns documentation to confirm packaging configuration. Ensure the selected variant matches the required hold and trip currents for the target application. Cross-reference certification marks such as UL or RoHS status directly with the manufacturer's datasheet to guarantee regulatory compliance before integration into final products.

Selection Notes

Select this component when a 72 VDC maximum voltage rating is required alongside a 1.35 A hold current. The radial leaded form factor supports through-hole PCB assembly. Consider the thermal environment, as the operating range extends to -40°C. Verify that the 2.70 A trip threshold aligns with the protected circuit's surge tolerance requirements.

Part Context

This part belongs to the Bourns Multifuse MF-RX/72 series, which utilizes a specialized 125°C polymer PTC element. The series is engineered for high-voltage applications requiring reliable overcurrent protection. The radial leaded design provides flexibility for designers working with space-constrained layouts compared to surface mount alternatives.