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What is surge protected networking?
POWERFUL NETWORK AND PHONE LINES: Surge suppressor is designed to protect data and communications equipment against AC transients caused by lightning, electrostatic discharge and ground surges that can enter equipment from the signal lines or chassis ground.
Can a power surge damage an Ethernet cable?
In recent years, many manufacturers of equipment using twisted-pair Ethernet ports have noted an increase in lightning surge damage to the Ethernet ports. The known mechanisms by which lightning surges can couple onto Ethernet cables have been described.
Why do surge protectors have coaxial?
To protect from electrical surges caused by lightening strikes. The electrical surge caused by a lightening strike can travel through coax cable and damage a component.
Which is the best ESD protection for Ethernet?
If higher levels of ESD protection are needed, the SP3050 (20kV) can be used. If smaller form factors are required the SP3004 is a good option providing the same level of ESD protection in a SOT563 package. The IEC 61000-4-2 will be the most appropriate standard for ESD testing to verify that the Ethernet port is not susceptible to ESD events.
Which is TVS diode is used for ESD protection?
At this speed, the capacitance of the suppressor needs to be taken into account. The signal lines to be protected from ESD and lightning transients include Tx+/- and Rx+/-. As shown at the left, a low-capacitance TVS Diode Array (SP3002) is being used to provide up to 12kV ESD protection.
How are Ethernet ports protected by Semtech diodes?
Semtech offers a variety of TVS diodes for protecting 1GbE, 2.5GbE, 5GbE, and 10GbE ports. Proper selection will depend on the immunity requirements and the sensitivity of the Ethernet transceiver. The example here has been successfully used to protect against ESD per IEC 61000-4-2, CDE and lightning surges up to 500V (tp = 1.2/50μs, Rs = 42Ω).
How is the Ethernet PHY chip protected from voltage?
External transient voltage suppressor (TVS) diodes are commonly used to protect the Ethernet PHY chips from these threats. However, we find that a lot of confusion exists on how to best connect the TVS diode for maximum effectiveness. Common wisdom would suggest connecting the diode near the RJ-45 connector, from each signal line to ground.