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Bel Fuse

- The Bel Fuse circuit protection portfolio includes one of the broadest ranges of circuit protection products on the market today. Bel Fuse has been at the forefront of the industry shift to board level, surface mount, fuse designs, including our C2Q Chip Fuses with 0603 footprint. Many of today’s smaller hand held devices incorporate this newer technology and Bel Fuse is poised to help!

The circuit protection offering also includes PCB mount 277V radial fuses, as well all standard glass and ceramic cartridge fuses including axial leaded board mounted options. Bel Fuse also offers a complete product offering in PPTC resettable fuses. And, in addition to the standard products, Bel Fuse offers a wide range of value-add options to facilitate more efficient assembly on the production line. Related product brands include: Bel, Bel Power Solutions, Cinch Connectivity Solutions, Signal Transformer, Stewart Connector, TRP Connector.

Circuit Protection Portfolio

Image of Bel Fuse's Circuit Protection Portfolio

The Bel Fuse circuit protection portfolio includes one of the broadest ranges of circuit protection products on the market today. Learn More

LAN Discrete Transformer Modules

Image of Bel Fuse Inc's LAN Discrete Transformer Modules

Bel Fuse, Inc.'s LAN transformer modules are designed for most popular 10/100 Base TX and Gigabit Ethernet transmission data standards over copper LANs. Learn More

MagJack Integrated Connector Modules

Image of Bel Fuse MagJack Integrated Connector Modules

Bel Fuse's MagJack® integrated connector module (ICM) product-line is Bel Fuse and Stewart’s premier family of products for Ethernet networking applications. Learn More

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Featured Products

Image of Bel Fuse Inc's Brick SMT Fuse Portfolio

Brick SMT Fuse Portfolio

Bel Fuse presents surface mount, ceramic tube/end cap fuse constructions, with U.S. (UL/CSA), Europe (VDE/Semko), China (CCC), and Japan (PSE) safety agency approvals. Learn More

Image of Bel Fuse Inc's RJS Series Telecom Power Cross and Ballast Protection

RJS Series Telecom Power Cross and Ballast Protection

The RJS series fuses from Bel Fuse, Inc. are primarily intended for use as a cost effective solution for telecommunication circuit applications that require low-current protection with high-surge tolerance and must comply to test requirements according to UL/IEC1950/60950 and Telcordia GR1089, Issue 3. Learn More

Newest Products View All (49)

SMT 0603 Size PPTC Resettable Fuses - 0ZCM Series

Bel Fuse grows its PPTC portfolio with the SMD 0603 package size 0ZCM series resettable fuses that meet Bel's auto qualification test plan for AEC-Q compliance. Learn More

1206 High Inrush Fast-Acting SMD Fuse – 0685P Series

Bel Fuse's fast-acting fuse features improved surge withstand performance with broad amperage range from 2 A through 50 A in a small 1206 package size. Learn More

Ethernet MagJack® 2 x1 1GBase-T 30 W and 60 W PoE ICMs

Bel’s PoE ICMs combine two RJ45 Ethernet ports with the PoE-enabled magnetics into one robust, small form factor. Learn More

Gigabit MagJack® Two-Port 100 W Modular Connector

Bel Magnetic Solutions’ 100 W products are ideal for LED lighting applications at both the switch side and lighting ballast side. Learn More

Ethernet 100 W 1GBase-T Ganged 4-Port MagJack® ICM

Bel Magnetic Solutions' 1GBase-T ganged MagJack® ICM is ideal for applications such as high-powered devices and high power sourcing applications. Learn More

USB 2.0 Type A and RJ45 MagJack® ICM Combination Connectors

Bel Magnetic Solutions' MagJack® ICM connector supports a wide range of LAN communication speeds and has extended temperature ranges of -40°C to 85°C. Learn More

Tools and Support

Image Bel Fuse's Circuit Protection Focus Catalog

Circuit Protection Focus Catalog

Provides overview of Bel Fuse Circuit Protection Portfolio. Learn More

Image of Bel Fuse's Fuse Cross Reference

Fuse Cross Reference

Competitive part numbers and Bel Fuse fuse equivalents. Learn More

Image of Bel Fuse's Fuse Terminology

Fuse Terminolgy

Product definition and fuse de-rating guide. Learn More

Image of Bel Fuse's Selection User Guide

Fuse Safety Selection / User Guide

Circuit protection considerations for 3rd party safety certification. Learn More

Image of Bel Fuse's I2T Explanation

I2t Test Methods and Data Presentation

How to properly select a fuse based on I2t values from different fuse manufactures. Learn More

Image of Bel Fuse's PTC Resettable Fuses Cross Reference

PTC Resettable Cross Reference

Competive part number compare and Bel Fuse PTC equivalents. Learn More

Recent PTMs View All (4)

Integrated Connector Module, ICM Publish Date: 2013-07-15

ICM is a single module made of a combination of magnetic and discrete components, which eases the conversion from the physical layer to the physical media.

Duration: 10 minutes
Modular Jack EPP-918A Environmental Protection Gel Publish Date: 2011-10-18

EPP-918A Compound helps prevent corrosion due to harsh environments and usage, is RoHS6 compliant, and contains a UV tracer to assist in visual inspection.

Duration: 5 minutes
MagJack® Integrated Magnetics Modular Jacks Publish Date: 2011-10-18

The MagJack family of highly integrated Ethernet connector modules offer design flexibility, RoHS compatibility, reliability, and manufacturing testing methods.

Duration: 15 minutes
ARJ45 Category 7a Modular Connector System Publish Date: 2011-10-18

The ARJ45 connector system was designed for high performance Category 7a and Class Fa systems.

Duration: 10 minutes

Featured Videos View All (8)

Circuit Protection 0AD Series Family of Fuses Product Overview

Product Overview of the 0AD Series Family of Fuses from Bel Fuse-Circuit Protection: 0ADA, 0ADB, 0ADE & 0ADK. These fuses feature very high AC & DC voltage ratings & interrupting ratings.

Bel Magnetic Solutions Auto Ethernet MagJack | Digi-Key Daily

Bel Magnetic Solutions presents a first of its kind 1GBase-T MagJack ICM designed for next-generation vehicles that utilize Ethernet signaling inside the automobile.

Bel Fuse MagJacks ICM | Digi-Key Daily

MagJack® from Bel Fuse integrated connector module (ICM) product-line is Bel Fuse and Stewart’s premier family of products for Ethernet networking applications, ranging from 10/100 BaseT to 10 GBaseT, to PoE(plus).

Bel Powerline Communication Modules | Digi-Key Daily

Bel Fuse's power module provides an integrated solution for powerline communications with the “black box” design that requires no external software and only a few external components to create a working solution.

Manufacturer Web site