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Kommunikationsinfrastruktur

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.

Zuverlässigkeit

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.

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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 Technologie Solutions

Überstrom
Schutz

Sicherung

1
      
4
881-Baureihe
TLS-Baureihe
606-Baureihe

Surge
Schutz

TVS-Diode

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

Surge
Schutz

MOV

2
      
3
C-III-Baureihe
AK1-Y-Baureihe

Überstrom
Schutz

Sicherung

3
L17T-Baureihe
PSR
JLLS

Temperatur
Sensoren

Thermistor

1
      
4
RA-Baureihe
RB series
KR series
LR series

Surge
Schutz

MOV

4
LV UltraMOV

Surge
Schutz

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 Technologie Solutions

Überstrom
Schutz

Sicherung

1
881 series surface mount fuses
TLS-Baureihe

Surge
Schutz

TVS-Diode

1
LTKAK10 surface mount high power TVS Diode

Überstrom
Schutz

PTC

2
      
3
SMD-Baureihe

Surge
Schutz

SIDACtor

2
SEP Series

ESD & Surge
Schutz

TVS Diose
Array

2
SP3400

ESD
Schutz

TVS-Diode

3
SMCJ
SMDJ

ESD
Schutz

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 Technologie Solutions

Überstrom
Schutz

Sicherung

1
456-Baureihe

Surge
Schutz

MOV

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

Temperatur
Sensoren

Thermistor

1
RA-Baureihe
RB series
KR series
LR series

ESD
Schutz

TVS-Diode

4
SMDJ-Baureihe

ESD & Surge
Schutz

TVS-Diode
Array

2
SP3010

ESD & Surge
Schutz

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 Technologie Solutions

Overcurrent & 
overtemperature 
Schutz

PTC

1
1206L150SLYR Surface Mount PTC

ESD protection
on Vbus

TVS-Diode
Array

2
SP1003 TVS-Diodenarray

ESD protection
on data lines

TVS-Diode
Array

3
SESD1103 TVS Diode Array

Überstrom
Schutz

Sicherung

4
461 series Telelink surface mount fuse

ESD and surge
Schutz

TVS-Diode
Array

5
SRV05-04HTG-D TVS Diode Array

ESD and surge
Schutz

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 Technologie Solutions

Surge
Schutz

Varistor

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

Überstrom
Schutz

Sicherung

1
505 Series Cartridge Fuse 
487-Baureihe
606-Baureihe
PSR-Baureihe

Gleichrichter

Gleichrichter
Modul

2
      
4
MDD
VUO
MDM

Power Factor
Correction

IGBT

2
      
4
XPT series
Ultra junction X-Class MOSFET

Control power
Halbleiter

Gate-Treiber

2
      
3
      
4
      
5
IXD_6xx

Surge
Schutz

TVS-Diode

2
SMDJ surface mount TVS diode

Umrichter

IGBT module

3
      
5
MIXA
MIXG
LSIC1MO SiC MOSFET

Gleichrichter

Gleichrichter
Diode

5
DSE
LSIC2SD

Feedback
controls

Linear error
amplifier

6
LIA 130

Überstrom
Schutz

Sicherung

5
881 series SMD Fuse
TLS series
881F series
456-Baureihe
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.

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