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Application introduction

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15.1 Static electricity and surge protection using SM712/WP61150B


Ethernet usually uses line-to-line and line-to-ground static electricity and surge protection technology, with a maximum signal rate of 10Gbit/s. This speed requires consideration of the capacitance of the suppressor. As shown in the figure below, WPE3V3D3UW is used to protect secondary high-speed lines. Using the semiconductor discharge tube LANTSPD-C8 in conjunction with RC, it can effectively provide common mode surge protection for first-level high-speed lines.


Comply with standards: ESD IEC 61000-4-2 Level 4 Surge IEC 61000-4-5 Level 4 (communication combination wave)


Selection guide

P/N
Package
CJ
ESD
IEC61000-4-2
Surge
IEC61000-4-5
Applicable version
WP61150MBSMB80pF30KV6KV(10/700μ)/
SM712SOT-2350pF30KV12A(8/20μs)/