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What are Ethernet magnetics for?
The magnetics protect against faults and transients, including rejection of common mode signals between the transceiver IC and the cable. The magnetics also provide galvanic isolation from Ethernet cables, and offset any DC biasing caused by connected nodes having been powered from different sources.
Is fiber or Ethernet faster?
Fibre Channel is more reliable than Ethernet in terms of lossless protocol. Fibre Channel SFP can provide in-order and lossless delivery of raw block data while Ethernet SFP can’t. Transmission Speed of Fibre Channel vs Ethernet SFP: Fibre channel supports a transmission speed of 1, 2, 4, 8, 16, 32, and 128 Gbps.
What do you need to know about Ethernet Magnetics?
The properties that Ethernet magnetics need to have are specified in the standard – for example, a transformer for a 100BASE-T connection is required to have an inductance value of at least 350µH when a DC bias of 8mA is applied. Since these attributes are fixed, it may seem like Ethernet magnetics components are all the same.
What kind of transformers are used for Ethernet Magnetics?
TDK has a slightly unusual take on transformers for Ethernet magnetics. The company wanted to use toroidal (doughnut-shaped) transformers in this application as they have excellent leakage flux characteristics, but since toroidal transformers have to be hand-wound, the manufacturing tolerances are typically too loose.
What is the inductance value of an Ethernet transformer?
For example, a transformer for a 100BASE-T connection is required to have an inductance value of at least 350µH when a DC bias of 8mA is applied. So all magnetics modules designed for Ethernet isolation will have this in common.
Why do I need my Own Ethernet transformer?
Specifying your own Ethernet transformer module to sit between your device’s PHY chip and the RJ45 jack you’re using means you can boost electrostatic discharge (ESD) protection since the placement and layout is up to you – in this case, the distance between the components in the Ethernet front end should be maximised.