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- Bel and its groups are primarily engaged in the design, manufacture and sale of products used in networking, telecommunications, high-speed data transmission, commercial aerospace, military, transportation, and consumer electronics. Products include magnetics (discrete components, power transformers and MagJack™ connectors with integrated magnetics), modules (DC-DC converters and AC-DC power supplies, integrated analog front-end modules and custom designs), circuit protection (miniature, micro, surface-mount and PPTC resettable fuses) and interconnect devices (micro, circular and filtered D-Sub connectors, fiber optic connectors, passive jacks, plugs, radio frequency (RF), microwave connectors and high-speed cable assemblies). The company operates facilities around the world. Related product brands include: Bel Fuse, Bel Power Solutions, Cinch Connectivity Solutions, Signal Transformer, Stewart Connector, TRP Connector.

Power Solutions

Bel Power Solutions

Bel has one of the world’s largest power conversion and power management solutions portfolio for AC/DC & DC/DC applications. Learn More

Protection Solutions

Image of Bel's Circuit Protection Family

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

Connectivity Solutions

Bel Connectivity Solutions

Bel’s Connectivity brands offer a diverse line of high quality, high performance connectors, and cable assemblies. Learn More

Product Listing View All

Image of Bel's Latest Products

Featured Products

High Frequency SMA End Launch Connectors

High Frequency SMA End Launch Connectors

Cinch Connectivity Solutions' high frequency end launch connectors are used to transition microwave energy from coaxial to planar transmission line structures. Learn More

Image of Bel Fuse MagJack Integrated Connector Modules

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, ranging from 10/100 BaseT to 10 GBaseT, to PoE(plus). Learn More

Newest Products View All (151)

Image of Signal Transformer's Isolation More-4-LessTM International Transformers - M4L Series

Isolation More-4-Less™ International Transformers - M4L Series

Signal Transformer's More-4-Less™ M4L series international transformers provide more than 12 mm creepage distance between primary and secondary windings.

Learn More
Image of Bel Fuse MagJack® ICM Combination Connector

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.

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Image of Stewart Connector's Cat6/Cat6a RJ45 Punch Down Modular Plugs – SS-39300 Series

Cat6/Cat6a RJ45 Punch Down Modular Plugs – SS-39300 Series

Stewart Connector's RJ45 punch down modular plugs for ease of use as a field terminated connector and are built to handle PoE applications.

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Image of Bel Fuse PTC Resettable Radial Leaded Fuse Line Expansion - 0ZRx Series

PTC Resettable Radial Leaded Fuse Line Expansion - 0ZRx Series

Bel Fuse's resettable fuses protect against harmful surges and faults by limiting the flow of dangerously high current during fault conditions.

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Image of Signal Transformer's Split/Tran™ Class 2 Split Bobbin Transformers - ST/DST Series

Split/Tran™ Class 2 Split Bobbin Transformers - ST/DST Series

Signal Transformer's Split/Tran™ transformers provide superior isolation and low capacitive coupling and are built to meet Class 2 safety circuit standards.

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Image of Signal Transformer's Split Bobbin Two-4-One™ Power Transformers

Split Bobbin Two-4-One™ Power Transformers

Signal Transformer's Two-4-One™ power transformers use split bobbin construction which provides superior isolation and low capacitive coupling.

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Tools and Support

Image of Cinch's Type N Connectors

Type N Connectors

Johnson® Type N Connectors meet or exceed the performance requirements of MIL-PRF-39012. All designs are based on 50 ohm system impedance per MIL-STD-348, and operate at frequencies up to 11 GHz minimum. Learn More

Image of Cinch's RJ45 D38999 Series

C-RJFTV Series

Bringing the combined technical expertise and engineering capabilities of Cinch’s rugged D38999 shell and Stewart’s high performance RJ45, the RJ45 D38999 provides Ethernet connectivity in harsh environments. Learn More

Image Bel Fuse's Circuit Protection Focus Catalog

Circuit Protection Focus Catalog

Provides overview of Bel Fuse Circuit Protection Portfolio. Learn More

Image of Signal Transformer's Linear Transformers

Linear Transformer At-A-Glance

Provides overview of Signal Linear Transformer Portfolio. Learn More

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Open-Frame Product Selection Guide

An overview of Bel Power Solutions newest Open-Frame power solutions. Learn More

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Product Highlights

A general overview of the intelligent, efficient and reliable power conversion devices provided by Bel Power Solutions. Learn More

Product Training Modules View All (14)

Image of Signal Transformer SMD Inductor

Surface Mount Inductors (SMD) for Lighting

Duration: 5 minutes

An introduction to Signal's line of SMD Inductors for Lighting, including an overview of applications and markets, as well as safety and technology features incorporated into the series.


EcoTran Standard Series Transformers

Duration: 10 minutes

This presentation will provide an introduction to Signal's line of EcoTran Standard Series Transformers.

Image of Bel Power Solutions DIN Rail Power Supply

DIN Rail AC-DC and DC-DC Power Supplies

Duration: 10 minutes

DIN Rail power supplies are commonly specified for industry equipment, test and measurement equipment, wireless communications, renewable energy, instrumentation, robotics and automation applications.

Image of Bel Power Melcher AC-DC Power Converters

Railway and Harsh Environment Products

Duration: 10 minutes

MELCHER products are designed to meet the highest national and international standards for harsh environments

Featured Videos View All (22)

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.

Publish Date: 2019-02-13

Cinch Fixed Length RF Cable Assemblies | Digi-Key Daily

Cinch Connectivity Solutions is proud to partner with Digi-Key to offer a wide selection of Fixed Length Coax Cable assemblies.

Publish Date: 2019-01-10

Bel Power RCM Series Converters | Digi-Key Daily

RCM chassis-mount DC-DC converters from Bel Power are designed for railway applications where compactness and high reliability are required.

Publish Date: 2018-12-20

Why Cinch

Cinch Connectivity Solutions is a vertically integrated supplier of high quality, high-performance connectors, fixed length and semi-rigid cable assemblies from DC to 50 GHz, and custom solutions. Our product lines deliver custom engineered solutions

Publish Date: 2018-12-17

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