Esd Suppression Design Guide Page 6 ESD Suppression Design Guide

BROADBAND NETWORK PORT PROTECTION The following are examples of the implementation of ESD and lightning suppression for Ethernet ports (RJ-45 connectors). Note that the diagrams shown below represent 10Mbps and 100Mbps applications -- For 1Gbps applications, the circuit protection should be double of what is shown. For additional design examples, guidance and application assistance, please contact Littelfuse. Intra-Building - Robust Lightning Protection The diagram show below is typical for indoor network line and equipment applications. The TVS Diode Array device combination is rated up to 100A, per the GR-1089 standard. Outside World TX+ J1 TX- Case Ground RJ-45 Connector Ethernet PHY RX+ RX- J8 F1 SEP0xx F2 F3 F4 PHY Ground F1-F4 = 461Series Telelink Fuses V- V+ V- Notes: - Devices shown as transparent for actual footprint SP3304N Outside World TX+ J1 TX- Case Ground RJ-45 Connector Ethernet PHY RX+ RX- F1-F4 = 461Series Telelink Fuses J8 F1 LC03-3.3 F2 F3 F4 SRV05-4 PHY Ground Notes: - Devices shown as transparent for actual footprint - LC03-3.3 pins 2, 3, 6, 7 are Not Connected Outside World J1 TX+ TX- RX+ RX- Case Ground RJ-45 Connector Ethernet PHY J8 SLVU2.8-4 * Devices shown as transparent for actual footprint Outside World J1 Case Ground RJ-45 Connector Ethernet PHY J8 SP0504SHTG TX+ TX- RX+ RX- NC Inter-Building - Robust Lightning Protection The diagram show below is typical for outdoor network line and equipment applications. The SIDACtor and TVS Diode Array combination is rated up to 500A, per the GR-1089 standard. Basic Lightning Protection The diagram shown below is typical for basic lightning (differential only) of indoor/outdoor network line and equipment applications (Example: office environment equipment). Basic ESD Protection The diagram shown below is typical for basic ESD protection of indoor network line and equipment applications (Examples: home office / consumer electronics peripheral devices). 2016 Littelfuse ESD Suppression Design Guide www.littelfuse.com ESD Suppresion Design Guide Port Protection Examples 5

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