MF-USML500-2

Description：PTC RESET FUSE 6V 5A 1210
Series：Multifuse®, MF-USML
Mfr：Bourns Inc.
Package：Tape & Reel (TR)

SKU:9335e43e5231 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 6V 5A 1210
Series：Multifuse®, MF-USML
Mfr：Bourns Inc.
Package：Tape & Reel (TR)
Type：Polymeric
Voltage - Max：6V
Current - Hold (Ih) (Max)：5:00 AM
Current - Trip (It)：10:00 AM
Current - Max：50 A
Time to Trip：2 s
Resistance - Initial (Ri) (Min)：1 mOhms
Resistance - Post Trip (R1) (Max)：14.5 mOhms
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Surface Mount
Package / Case：1210 (3225 Metric), Concave
Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
Height - Seated (Max)：-
Thickness (Max)：0.047" (1.20mm)
Lead Spacing：-

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MF-USML500-2

Overview

The Bourns MF-USML500-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the USML series, designed for high-temperature circuit protection. It features a compact SMD package suitable for space-constrained layouts and operates reliably in demanding environments with high voltage and elevated temperatures. The device provides overcurrent protection by increasing resistance during fault conditions, eliminating nuisance tripping caused by ambient temperature variations. It is certified under cUL E174545 and TÜV R 50391579 standards.

Feature Summary

Compact surface-mount design offering layout flexibility compared to radial leaded components
Robust protection against short circuits in high-voltage and high-temperature applications
Eliminates temperature-based nuisance tripping across diverse operating conditions

Applications

Automobile circuitry protection
Overcurrent surge protection for high-reliability electronic equipment
Resettable fault protection for industrial transportation systems
Communication and security equipment safeguarding
Consumer electronic device circuit protection

Procurement Notes

Verify component authenticity through authorized Bourns distributors or direct manufacturer channels. Confirm that the received part matches the MF-USML500-2 designation and includes appropriate certification markings. Ensure storage conditions comply with manufacturer guidelines to maintain material integrity prior to assembly.

Selection Notes

Select this component when space-saving surface-mount packaging is required alongside high-temperature resilience. Consider its capability to handle demanding electrical environments where traditional fuses may fail due to ambient thermal fluctuations. Evaluate compatibility with automated placement processes given its SMD form factor.

Part Context

This PPTC device belongs to the Multifuse® Polymer PTC Resettable Fuses family, specifically the USML series optimized for high-temperature performance. It represents an evolution in circuit protection technology, replacing conventional fusible links with reusable, thermally stable alternatives tailored for modern electronics manufacturing.