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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

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 (19)

Image of Bel Fuse C1H Series Chip Fuses

High Current 1206 Ceramic Chip Fuses C1H Series

Bel Fuse circuit protection chip fuse offered with their type C1H series. The fully automated C1H series, in popular 1206 SMD case size will offer the highest ampere rating to date for the package size.

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Image of Bel-Fuse 0659 Series T-Lag Fuse

Fuses 5 mm x 20 mm T-Lag Cartridge and Axial 0659 Series

Bel Fuse's 0659C (cartridge) and 0659P (pigtail leads) are lower cost, fully automated versions of the Bel 5HT 5 x 20 mm cartridge and 5 HTP pigtail lead fuse series.

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Image of Bel-Fuse 0679L Series Fuse

Fuse Square SMD 2410 Size Fast Acting 0679L Series

Bel Fuse's 0679L series is lower cost, fully automated version of the popular SSQ 2410 size SMD fuse series.

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Image of Bel Fuse's 0697H Slow Blow Fuse

0697H UL, Slow-Blow, Radial, 350 VAC Fuse

Bel Fuse offers 0697H series slow-blow, rectangular, high amp 350 VAC fuse

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Image of Bel Fuse 0697W Series, 350 VAC Fuse

0697W Time Lag, Rectangular, 350 VAC Fuse

Bel Fuse 0697W series, time lag, radial leaded micro fuse with enhanced operating voltage range.

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Image of Bel Fuse RSTA Series

RSTA Time LAG Rectangular 277 VAC Fuse

Bel Fuse's RSTA series radial leaded micro fuse

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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 Presetation

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

Product Training Modules View All (6)

SMD

Dual Winding Inductors in SEPIC Converters

Duration: 10 minutes

View the basic SEPIC converter circuitry with the various available Signal Transformer Dual Winding Inductor series.

ICM

Integrated Connector Module, ICM

Duration: 10 minutes

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.

Surface Mount Wire Wound Inductors

Surface Mount Wire Wound Inductors

Duration: 10 minutes

SC product series of surface mount wire wound power inductors are designed for energy storage and EMI filtering.

DS-3 Lines

Benefits of DS-3 Lines

Duration: 5 minutes

The distinctions between a Telco BNC and other BNCs available on the market and the benefits of installation training and certification.

Manufacturer Web site