10/100/1000以太网，建筑物内部闪电抗扰度

设计说明：

保护应用：

The data signals used in an Ethernet port typically vary between 1.0V and 2.5V, with maximum data rate of 1000Mbps (or 1Gb). Some 10GigE applications are also starting to be deployed. 达到该数据传输速率时，应考虑抑制器的电容量。 The signal lines to be protected from ESD and lightning transients include Tx+/- and Rx+/-.

解决方案说明：

As shown at the left, a two-stage protection scheme should be used. In this case, an SP03 and SP305 TVS Diode Array can be used for GR-1089, intra-building lightning protection (100A, tP=2/10µs), ITU K.20/.21 Internal Port Basic & YD/T 950 (500V, 41.33A, 1.2/50-8/20) or ITU K.20/21 Internal Port Enhanced (1000V, 83.33A, tP = 1.2/50- 8/20), IEC 61000-4-5 Class 1 (500,250A, tP = 1.2/50- 8/20) as well as ESD protection (IEC 61000-4-2 15 kV air discharge & 8 kV contact discharge). The SP03 diverts the majority of the energy away from the transformer while the SP3050 clamps the remaining “let-through” energy to safeguard the PHY.

配套解决方案：

In the event that the Ethernet port has to comply with power fault requirements, then fuses like the 0461 Series should be considered. Also, devices like the SP4061 and SP4062 Series can be used in place of the SP3050 if more robust protection (i.e. lower clamping) is required.

监管问题：

GR-1089 (Intra-Building ), ITU K.20/.21 (Internal Ports), and YD/T 950 provide the testing criteria for the typical internal port Ethernet wiring applications.

特性：

应用警告：