Power over Ethernet (POE)

Power over Ethernet (PoE) is a technology that lets network cables carry electrical power. It allows IP telephones, wireless LAN Access Points, Security network cameras and other IP-based terminals to receive power, in parallel to data, over the existing CAT-5 Ethernet infrastructure without the need to make any modifications in it. PoE integrates data and power on the same wires; it keeps the structured cabling safe and does not interfere with concurrent network operation.


A typical PoE system consists of Power sourcing equipment (PSE) and a powered device (PD). The PSE may either be an Endspan (L2 Ethernet switch supporting PoE) or a Midspan (PoE hub). The PD is a PoE-enabled terminal such as an IP phone, Wireless LAN access point, etc. PSE provides the power on the cable for the PD.


The IEEE 802.3af, also called Data Terminal Equipment (DTE) Power via Media Dependent Interface (MDI), is the first international standard to define the transmission of power over Ethernet infrastructure. This standard specifies the protocol for delivery of a nominal 48 Vdc over unshielded twisted-pair cables (such as CAT-5), eliminating the need for a local power source for the remote device. It consumes less than 13 watts of power.


The PoE facility was developed to reduce the cost of network planning, cabling and installation. PoE saves time and money by avoiding the need for separate installation of Data and Power infrastructures. PoE makes network planning flexible and independent of switch cabinets and power sources, and also saves additional outlay for power and telephone networks (VoIP).


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Videos

Power over Ethernet

In the Lab: Bluetooth Control of Power-over-Ethernet Lighting

The Future of PoE LED Lighting

Featured Products

POE & PSE CONTROLLER, 1PORT, 60V, TQFN28

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POE/POE CONTROLLER, QFN-20

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Power Over Ethernet (POE) Controller, 60 V/7 mA, 29V

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Lepingujärgse hinna kuvamine pole hetkel võimalik. Kuvatud hinnad on standardsed jaehinnad, esitatud tellimustes rakendatakse menetlemisel lepingujärgseid hindu.

  Tootja tootenr Tellimiskood Tootja / kirjeldus
Saadavalolek Hind tootele
Hind
Kogus
MAX5971BETI+
MAX5971BETI+ - Power Over Ethernet (POE) Controller, 60 V/, 25 kHz Switch/Clock, 28.5 V UVLO Threshold, TQFN-28

2514243

Power Over Ethernet (POE) Controller, 60 V/, 25 kHz Switch/Clock, 28.5 V UVLO Threshold, TQFN-28

MAXIM INTEGRATED PRODUCTS

POE & PSE CONTROLLER, QUAD, 60V, TQFN-28; Input Voltage:60V; Output Current:-; UVLO:28.5V; Controller IC Case Style:TQFN; No. of Pins:28Pins; Duty Cycle (%):-; Frequency:25kHz; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Rang

8 Laos

+ Kontrolli laoseisu ja tarneaegu

8 laos järgmisel päeval kohaletoimetamiseks (ladu: UK): 00 (ümberkeritud toodetele 18:30) E–R (välja arvatud riiklikel pühadel)

Suurem laovaru on saadaval nädalal, mis algab kuupäevaga 28.12.20

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NCP1090DG
NCP1090DG - Power Over Ethernet (POE) Controller, 57 V/500 mA, 3.6 V UVLO Threshold, SOIC-8

1901642

Power Over Ethernet (POE) Controller, 57 V/500 mA, 3.6 V UVLO Threshold, SOIC-8

ON SEMICONDUCTOR

POE-PD, INTERFACE CTLR, 8-SOIC; Input Voltage:57V; Output Current:-; UVLO:-; Controller IC Case Style:SOIC; No. of Pins:8Pins; Duty Cycle (%):-; Frequency:-; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:-; RoHS Phthalate

446 Laos

+ Kontrolli laoseisu ja tarneaegu

446 laos järgmisel päeval kohaletoimetamiseks (ladu: UK): 00 (ümberkeritud toodetele 18:30) E–R (välja arvatud riiklikel pühadel)

Suurem laovaru on saadaval nädalal, mis algab kuupäevaga 4.01.21

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MAX5980GTJ+T
MAX5980GTJ+T - Power Over Ethernet (POE) Controller, 60 V/7 mA, 400 kHz Switch/Clock, 29V UVLO Threshold, TQFN-32

2517223

Power Over Ethernet (POE) Controller, 60 V/7 mA, 400 kHz Switch/Clock, 29V UVLO Threshold, TQFN-32

MAXIM INTEGRATED PRODUCTS

POE PD CTRL, 60V, TQFN-32; Input Voltage:60V; Output Current:-; UVLO:29V; Controller IC Case Style:TQFN; No. of Pins:32Pins; Duty Cycle (%):-; Frequency:400kHz; Operating Temperature Min:-40°C; Operating Temperature Max:105°C; Product Range:-; RoHS Phtha

1 656 Laos

+ Kontrolli laoseisu ja tarneaegu

1 656 laos järgmisel päeval kohaletoimetamiseks (ladu: UK): 00 (ümberkeritud toodetele 18:30) E–R (välja arvatud riiklikel pühadel)

Suurem laovaru on saadaval nädalal, mis algab kuupäevaga 8.02.21

Lõigatud linditükk
Pakendivõimalused
Soovitatud asendus tootele:2517223
2517223RL: Ümberkeritud

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LT4295IUFD#PBF
LT4295IUFD#PBF - Power Over Ethernet (POE) Controller, 60 V/2 mA, 214 kHz Switch/Clock, QFN-28

2629294

Power Over Ethernet (POE) Controller, 60 V/2 mA, 214 kHz Switch/Clock, QFN-28

LINEAR TECHNOLOGY

POE CONTROLLER, IEEE 802.3BT PD, QFN-28; Input Voltage:60V; Output Current:-; UVLO:-; Controller IC Case Style:QFN; No. of Pins:28Pins; Duty Cycle (%):50%; Frequency:214kHz; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:L

Ei ladustata enam

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TPS2378EVM-105 .
TPS2378EVM-105 . - Evaluation Board, PoE High-Power PD Interface, AUX Control

2379427

Evaluation Board, PoE High-Power PD Interface, AUX Control

TEXAS INSTRUMENTS

EVALUATION BOARD, POE / PD CONTROLLER; Silicon Manufacturer:Texas Instruments; Silicon Core Number:TPS2378; Kit Application Type:Power Management; Application Sub Type:Power Over Ethernet (POE), Powered Device(PD) Controller; Kit Contents:Eval Board TPS2

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TPS2378DDA .
TPS2378DDA . - Power Over Ethernet (POE) Controller, 57 V/ 500 µA, 40 V UVLO Threshold, SOIC-8

2144277

Power Over Ethernet (POE) Controller, 57 V/ 500 µA, 40 V UVLO Threshold, SOIC-8

TEXAS INSTRUMENTS

POE, IEEE802.3AT TYPE2, 0.85A, 8SOIC; Input Voltage:57V; Output Current:850mA; UVLO:-; Controller IC Case Style:SOIC; No. of Pins:8Pins; Duty Cycle (%):-; Frequency:-; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:-; RoHS

Ei ladustata enam

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LTC4279IS#PBF
LTC4279IS#PBF - POE/POE+/LTPOE++/PSE CONTROLLER, SOIC-16

2708141

POE/POE+/LTPOE++/PSE CONTROLLER, SOIC-16

LINEAR TECHNOLOGY

POE/POE+/LTPOE++/PSE CONTROLLER, SOIC-16; Input Voltage:57V; Output Current:-; UVLO:25V; Controller IC Case Style:SOIC; No. of Pins:16Pins; Duty Cycle (%):6.3%; Frequency:-; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:-

Ei ladustata enam

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DC2046A-B
DC2046A-B - Demonstration Board, LT4276B Power Over Ethernet Powered Device W/Synchronous Flyback, 5V/4.7A

2534783

Demonstration Board, LT4276B Power Over Ethernet Powered Device W/Synchronous Flyback, 5V/4.7A

LINEAR TECHNOLOGY

DEMO BRD, LT4276B POE PD W/SYNC FLYBACK; Silicon Manufacturer:Linear Technology; Silicon Core Number:LT4276B, LT4321; Kit Application Type:Power Management; Application Sub Type:Power Over Ethernet (POE); Kit Contents:Demo Board LT4276B & LT4321; Product

Ei ladustata enam

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LM5072MH-80
LM5072MH-80 - Power Over Ethernet (POE) Controller, 60 V/1.5 mA, 1 MHz Interface, 6.25V UVLO Threshold, TSSOP-16

1286769

Power Over Ethernet (POE) Controller, 60 V/1.5 mA, 1 MHz Interface, 6.25V UVLO Threshold, TSSOP-16

TEXAS INSTRUMENTS

IC, POE COMBO 100V, POWERWISE; Input Voltage:9V; Output Current:-; UVLO:6V; Controller IC Case Style:HTSSOP; No. of Pins:16Pins; Duty Cycle (%):80%; Frequency:645kHz; Operating Temperature Min:-40°C; Operating Temperature Max:125°C; Product Range:-; RoHS

Ei toodeta enam

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