Littelfuse Distributor

Littelfuse - Since Edward V. Sundt founded Littelfuse in 1927, we've been driven by innovation. Sundt invented the first small, fast-acting protective fuse to prevent sensitive test meters from burning out. From that pioneering first step, our company has gone on to define the standards of the circuit protection industry. More...

Product
Training
Product
Listing
New
Products
Featured
Products
Tools
& Support
Company
Information

Go To Product Training Module Index Page

Digi-Key’s library of more than 500 exclusive PTM Online… On Demand® product training modules is a collection of training tools created with you – the busy design engineer – in mind. They are provided with the cooperation of participating supplier partners. From this one source, you can learn about the latest products and technologies, download datasheets, check inventory, contact our technical staff, and place an order for same-day shipment.

These modules are available in audio and non-audio formats and listed by supplier in easy-to-find alphabetical order. Simply locate the module that interests you and click on your format of choice. We hope you find these tools useful, and with new modules added continuously, we invite you to stop back often to see what’s new.

Product Training Modules Online...On Demand® is a registered trademark of Digi-Key Corporation.

= Updated Product Training Module - PTM New PTM

= New Product Training Module - PTM

Module Name	Audio	Non-Audio	Duration	Parts List
Introduction to SIDACtor Devices	8.52MB	879KB	35 min	Parts List
PLED Devices	4.02MB	473KB	15 min	Parts List
Transient Voltage Suppression (TVS) Diodes	6.4MB	1.8MB	20 min	Parts List

To view modules, you will need Adobe Flash 8 software, or greater, installed on your computer. Adobe Flash Player is available FREE from Adobe.

Flash Player | Flash Player Support Center

Littelfuse 875 & 877 Series Compact Fuses

875 & 877 Series Space-saving, Compact Footprint Fuses

Littelfuse's 875 and 877 Series optimizes this compact footprint by doing away with the conventional over-capping leads by using a direct weld production method. This series also offers high I2T values. They are suitable for end applications that are more susceptible to higher frequencies of surges/transients. More...

505 Series Ceramic Fuse - 500v 3AB 6x32mm

The 505 Series from Littelfuse is the first 500VAC/VDC rated, ceramic fuse in the 6x32mm Littelfuse product family. It is an ideal circuit protection solution for high energy applications. In addition, the 505 series has high interrupting rating at both 500VAC and 500VDC which ensures the circuit is well protected under very high current short circuit conditions. More...

477 Series - 500V 5x20mm Fuses

Littelfuse PLED Series SMD LED Array Protectors

PLED Series SMD LED Array Protectors

Littelfuse's PLED® open LED protector provides a switching electronic shunt path when a single LED in an LED array fails as an open circuit. This ensures that the entire array of LEDs will continue to function even if a single LED in the array does not. This provides higher reliable lighting functions in applications such as headlights, aircrafts, aircraft runway lighting, roadside warning lights, etc. Compatible with 1, 2 and 3 Watt LED applications with 3V forward voltage rating. More...

16R Series - 16V POLYFUSE® Radial Leaded Resettable PTC

Littelfuse's 16R Series Radial Leaded PTCs are designed to provide resettable overcurrent protection serving a wide range of electronics applications. With maximum 16 volts and maximum 100-ampere short circuit rating, they offer an ideal solution for USB protection. RoHS compliant and lead free. More...

Brochures and Catalogs

Introduction to Circuit Protection - Fuseology 101
Learn the different technologies offered by Littelfuse, basic properties, and selection process for each technology.

Electronic Circuit Protection Product Catalogs
View Littelfuse link to 9 different technology specific catalogs.

Selection Guides

Electronic Product Selection Guide
Extensive guide designed to help find protection solutions appropriate for the application. Links to series specific datasheets.

Application Notes

ESD and Transient Protection Application Notes

Transient Suppression Devices and Principles AN9768
Discusses two major categories of transient suppressors: attenuation and diversion of transients.

AC Line Voltage Transients and Their Suppression EC6391
Covers the transient environment, transient energy and methods used for AC Line applications.

Selecting an Appropriate ESD Device
Guidance on ESD devices for designers looking for a successful first pass design.

Tips for Enhancing ESD Protection
Various techniques a designer can employ in meeting ESD Testing.

SP72x for ESD and Transient Protection AN9304
Discusses ESD and transient protection using the SP720.

SP72x Turn-On and Turn-Off Characteristics AN9708
Common practice for switching on and off ESD pulses using the SP720 series.

SP72x Protection Arrays Meeting ESD(IEC 61000-4-2) AN9612
Covers IEC 61000-4-2 ESD immunity and transient current capability for the SP72X Series protection arrays.

Varistor Application Notes

Littelfuse Varistors: Basic Properties, Terminology and Theory AN9767
Describes the basic electrical properties of varistors.

Varistor Testing AN9773
Details the common tests of varistor parameters and describes suitable test methods using simplified test circuits.

The ABCs of MOVs AN9311
Guide for MOV products, A is for Application, B is for Basics, C is for Common questions.

The ABCs of Multilayer Suppressors AN9671
Guide for Multilayer MOV products, A is for Application, B is for Basics, C is for Common questions.

"ML" Multilayer Surface Mount Surge Suppressors AN9108
Applications, construction and capabilities of ML, MLE, MLN and AUML version multilayer suppressor.

Littelfuse Varistor Design Examples EC638
Common application examples, and illustrating the solution process for the appropriate varistor.

Thyristor Application Notes

Fundamental Characteristics of Teccor® Thyristors AN1001
Presents the basic fundamentals and terminology of SCR, Triac, Sidac, and Diac thyristors.

Phase Control Using Teccor® Thyristors AN1003
Fundamentals of SCR and Triac phase controls, shows how this is possible.

Gating, Latching, and Holding of Teccor® SCRs and Triacs AN1002
Describes how the SCR and Triac parameters are related. Helps users select best operating modes for various circuit applications.

Miscellaneous Design Tips and Facts for Teccor® Thyristors AN1009
Relationship of IAV, IRMS, and IPK, dv/dt Definitions, gate terminations, Impulse waveform, failure modes and more.

Maximum Ratings and Characteristics for Teccor® Thyristors AN1008
Explains maximum ratings and describes the irreversible damage that may occur and how to avoid such issues.

Related Product Brands

Littelfuse/Teccor brand thyristors

Littelfuse/Wickmann brand product

More about Littelfuse

We again revolutionized automotive fuse protection in 1986 with the debut of the space-saving MINI®. Its smaller design allowed for the additional protection of on-board electronic accessories. Recently, we introduced the world's smallest high surge current protection thyristor, the Teccor Q2L series "C-Rated" SIDACtor device.

And we continue to set new benchmarks. As the world leader in circuit protection, Littelfuse possesses nine core technologies, as well as some of the industry's most respected brands - Teccor, Wickmann and Pudenz. In addition, we're doing business all over the world.