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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  Manufacturer Part No Order Code Manufacturer / Description
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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

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  • 1,006 available for 3 - 4 business days delivery
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  • 1,006 available for 3 - 4 business days delivery: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

More stock available week commencing 28/11/22

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Suggested replacement for:2517223
2517223RL in Re-reel

1+ S$2.49 (S$2.66) 10+ S$2.17 (S$2.32) 25+ S$2.08 (S$2.23) 40+ S$2.03 (S$2.17) 120+ S$1.94 (S$2.08) 240+ S$1.76 (S$1.88) 480+ S$1.62 (S$1.73) 960+ S$1.41 (S$1.51) More Pricing...

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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

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  • 8 available for 3 - 4 business days delivery
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  • 8 available for 3 - 4 business days delivery: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

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1+ S$0.716 (S$0.77) 10+ S$0.662 (S$0.71) 25+ S$0.606 (S$0.65)

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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

ONSEMI

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

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  • 434 available for 3 - 4 business days delivery
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  • 434 available for 3 - 4 business days delivery: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

  • 384 more will be available on 4/3/22
  • More stock available week commencing 13/6/22

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    1+ S$21.57 (S$23.08) 5+ S$20.93 (S$22.40) 10+ S$20.28 (S$21.70) 20+ S$19.40 (S$20.76) 100+ S$18.12 (S$19.39)

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