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  • Interested in communications infrastructure products and applications expertise?

    Contact an Expert

    Communications Infrastructure

    As 4G and 5G networks expand worldwide, designers of radio, computing, and networking equipment must deliver high data rates, low latency, and reliability in all environments.

    Littelfuse offers a broad and deep portfolio of energy-efficient solutions that are dependable, affordable, and easy to incorporate into compact designs.


    Safety & security

    Protecting sensitive business and personal information from unauthorized access.

    Reliability

    Enabling cell towers and antennas to withstand extreme temperatures, humidity, noise, and interference from nature.

    Increased demand

    Upgrading global communication infrastructure for wireless data with 5G buildout and continued 4G expansion.

    Power efficiency

    Using the same or less power while still providing enhanced communication capabilities.

    protect
    control
    sense

    The Littelfuse Difference

    With our history of leadership in the telecom industry, we’re uniquely positioned to innovate future-focused communications infrastructure solutions that fit your application’s specific needs. We offer:

    • Application expertise and design guidelines
    • A comprehensive product portfolio
    • Robust testing capabilities
    • Assistance with standards compliance
    • Responsive sales support

    Communications Infrastructure Applications and Products

    Cellular base stations and small cells link the wireless signals to the wired telecommunication network.

    Cell Tower with Active Antenna
    Success
    Success
    Purpose Technology Solutions

    Overcurrent
    protection

    Fuse

    1
          
    4
    881 Series
    TLS Series
    606 Series

    Surge
    protection

    TVS Diode

    1
    LTKAK10 surface mount high power TVS diode
    HMOV Series
    LV?UltraMOV ?Series
    CG4 Series

    Surge
    protection

    MOV

    2
          
    3
    C-III Series
    AK1-Y Series

    Overcurrent
    protection

    Fuse

    3
    L17T Series
    PSR
    JLLS

    Temperature
    sensors

    Thermistor

    1
          
    4
    RA Series
    RB series
    KR series
    LR series

    Surge
    protection

    MOV

    4
    LV?UltraMOV

    Surge
    protection

    SIDACtor

    4
    Pxxx0SD

    Active antenna units transmit or receive radio signals. They also provide a conversion of the radio signal to a baseband signal for use by the baseband unit.

    Integrated Active Antenna
    Success
    Success
    Purpose Technology Solutions

    Overcurrent
    protection

    Fuse

    1
    881 series surface mount fuses
    TLS Series

    Surge
    protection

    TVS Diode

    1
    LTKAK10 surface mount high power TVS Diode

    Overcurrent
    protection

    PTC

    2
          
    3
    SMD Series

    Surge
    protection

    SIDACtor

    2
    SEP Series

    ESD & Surge
    protection

    TVS Diose
    Array

    2
    SP3400

    ESD
    protection

    TVS Diode

    3
    SMCJ
    SMDJ

    ESD
    protection

    Polymer ESD
    suppressor

    4
    XGD Series

    Baseband units convert communication signals from the telecom network into a format usable by the remote radio or active antenna

    Baseband Unit (BBU) Block Diagram
    Success
    Success
    Purpose Technology Solutions

    Overcurrent
    protection

    Fuse

    1
    456 Series

    Surge
    protection

    MOV

    1
    LV?UltraMOV?Series
    TMOV
    SM7
    SMDJ
    AK1-Y series
    5.0SMDJ
    8.0SMDJ
    Pxxx0SD

    Temperature
    sensors

    Thermistor

    1
    RA Series
    RB series
    KR series
    LR series

    ESD
    protection

    TVS Diode

    4
    SMDJ Series

    ESD & Surge
    protection

    TVS Diode
    Array

    2
    SP3010

    ESD & Surge
    protection

    TVS Diode
    Array

    3
    SRV05-4

    Network switches provide a connection point for wired devices to communicate with each other. They can provide a connection of the telecom network to baseband units, servers, or routers.

    Networking and Data Port Solutions
    Success
    Success
    Purpose Technology Solutions

    Overcurrent &?
    overtemperature?
    protection

    PTC

    1
    1206L150SLYR?Surface Mount PTC

    ESD protection
    on?Vbus

    TVS Diode
    Array

    2
    SP1003 TVS Diode Array

    ESD protection
    on data lines

    TVS Diode
    Array

    3
    SESD1103 TVS Diode Array

    Overcurrent
    protection

    Fuse

    4
    461 series Telelink surface mount fuse

    ESD and surge
    protection

    TVS Diode
    Array

    5
    SRV05-04HTG-D TVS Diode Array

    ESD and surge
    protection

    TVS Diode
    Array

    6
    SP1004U-ULC-04UTG TVS Diode Array

    The power supply converts, cleans, stabilizes, and distributes utility power so that it can be used by the cellular communication equipment.

    Power Supply Unit
    Success
    Success
    Purpose Technology Solutions

    Surge
    protection

    Varistor

    1
    UltraMOV Series
    AK3 series TVS Diode
    CG series GDT
    Pxxx0SDT + LA Series

    Overcurrent
    protection

    Fuse

    1
    505 Series Cartridge Fuse?
    487 Series
    606 Series
    PSR Series

    Rectifier

    Rectifier
    module

    2
          
    4
    MDD
    VUO
    MDM

    Power Factor
    Correction

    IGBT

    2
          
    4
    XPT series
    Ultra junction X-Class MOSFET

    Control power
    semiconductor

    Gate Driver

    2
          
    3
          
    4
          
    5
    IXD_6xx

    Surge
    protection

    TVS diode

    2
    SMDJ surface mount TVS diode

    Inverter

    IGBT module

    3
          
    5
    MIXA
    MIXG
    LSIC1MO SiC MOSFET

    Rectifier

    Rectifier
    diode

    5
    DSE
    LSIC2SD

    Feedback
    controls

    Linear error
    amplifier

    6
    LIA 130

    Overcurrent
    protection

    Fuse

    5
    881 series SMD Fuse
    TLS series
    881F series
    456 series
    protecting-highway-cloud

    Protecting The Highway to the Cloud

    Because a growing percentage of both business and personal information is stored in the cloud, it’s more important than ever to ensure fast, reliable access to this information. Learn how G.fast makes economical high-speed connectivity possible.

    Communications Infrastructure Application Notes

    protecting-highway-cloud

    Ethernet Design Guide

    Find the most appropriate circuit protection components for Ethernet-equipped applications with the help of our 34-page design guide. It describes categories of Ethernet (including PoE - Power over Ethernet) and presents example circuits, applicable standards, and recommended components.

    Contact Us Today

    Tell us? about your?projects and challenges.?We’ll explore solutions with you.

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