【应用】基于Littelfuse ESD保护器件的USB3.1接口保护方案

时间： 2020-12-31 来源：Littelfuse

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TVS,SP1003-01ETG,SP1006-01UTG,SP3022-01ETG

USB接口，是常用设备的主流接口之一。基于安规，USB设备对静电要求等级高，特别是多次插拔的静电冲击以及平时雷击情况带来的静电影响都会对接口网路的芯片造成冲击损坏的风险，故接口的保护至关重要，而采用低容值的ESD保护器件是最有效的静电保护方式。

针对不同传输速率的USB的应用，LITTELFUSE有相对应的ESD保护器件。对USB3.1的ESD保护：

根据芯片引脚布局USB3.1可以采用RF3077-000（对应型号：SESD1004Q4UG-0020-090）作为SSRXP1、SSRXn1、SSTXn2和SSTXp2的接口静电保护；

SPHVXX 系列可用于VBUS的ESD钳位保护；

SP1003（SP1003-01ETG）或者SP1006（SP1006-01UTG）可用于USB2接口ESD保护；

SP3022(SP3022-01ETG)可用于USB2.0选择的回路ESD保护。

RF3077-000（对应型号：SESD1004Q4UG-0020-090）：规格是7V的4路单向TVS，封装是小型的DFN1004封装。它的接触静电±20KV和空气静电等级±20KV、静电等级高。超低电容0.2pF，能快速响应静电干扰，保护接口芯片。

图1：RF3077-000的封装和原理示意图

SPHVXX：主要是12V、15V、24V规格，分别对应型号SPHV12-01ETG，SPHV15-01ETG和SPHV24-01ETG，封装SOD882，适用5V~20V的供电的钳位保护应用。

图2：SPHVXX的封装和原理示意图

SP1003-01ETG：规格是5V的单向TVS，封装是SOD882。它的接触静电±30KV和空气静电等级±30KV、静电等级高。低电容30pF，能快速响应静电干扰，保护接口芯片。

图3：SP1003-01ETG的封装和原理示意图

SP1006-01UTG：规格是6V的单向TVS，封装是小型的DFN-2。它的接触静电±30KV和空气静电等级±30KV、静电等级高。低电容25pF，能快速响应静电干扰，保护接口芯片。

图4：SP1006-01UTG的封装和原理示意图

SP3022-01ETG：规格是5.3V的双向TVS，封装SOD882。它的接触静电±20KV和空气静电等级±30KV、静电等级高。超低电容0.35pF，能快速响应静电干扰，保护接口芯片。

图5：SP3022-01ETG的封装和原理示意图

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Lightning Immunity (8x20μs) (A)

Operating Temperature（℃）

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Notification Letter of DO-214AA, DO-214AB TVS AUTO products and DO-214AA, DO-214AB, DO-214AC TVS Hi Reliability products Packaging Box Change

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SMCG85A-HRA,SMDJ70CA-HCA,SMCJ120A-HR,SMCJ60CA-HRA,SMCG17A-HR,SMCJ51CA-HR,SMBJ30A-HCA,5.0SMDJ75A-001T7,SMCJ120CA-HC,SMDJ7.0A-HCA,SMCJ51CA-HC,SMAJ45CA-HR,SMCJ170A-HRA,SMCJ170CA-HC,SMBJ9.0A-Q,SMCJ17A-001T13,TPSMB30CA,SMAJ45A-HRA,SMAJ18CA-HRA,SMCJ120A-HC,SMDJ18A-HCA,TPSMB7.0A-VR,SMCJ150A-HRAT7,SMCJ170CA-HR,SMDJ18CA-Q,SMAJ48C-001T13,SMCJ51A-HRA,SMDJ48A-HRAT7,SMDJ11A-HCA,SMAJ43A-1000,TPSMB130A,SMDJ63A-1000,SMCJ43CA-HCA1,SMAJ180C-001T13,SMCJ6.0CA-HR,SMCJ120A-HRA,SMBLCE30-HCA,SMAJ100CA-001,SMCJ120CA-HR,SMCJ90CA-HRAT7,SMCJ6.0A-HRA,SMCJ6.0CA-HC,SMBJ48A-HRA,SMBJ11CA-001T13,SMBJ40-001,SMDJ26A-HRAT7,SMAJ250A-001,5.0SMDJ40CA-001T13,SMDJ33CA-HRAT7,SMAJ7.5A-001,SMDJ54A-HCA1,SMDJ150A-HR,TPSMC188A-VR,TPSMC33A-VR,SMDJ54CA-HR,SMCG26A-HR,SMCJ14CA-HRA,SMCJ33A-HCA,SMDJ5.0CA-001T13,TPSMC120CA-VR,SMAJ20CA-HR,SMDJ54CA-HC,SMBLCE16-HRA,SMDJ40A-001,SMAJ70C-001T13,SMBJ8.5CA-HR,SMDJ36CA-HR,5.0SMDJ15A-001T7,SMCJ90A-HRAT7,SMCJ43CA-HRAT7,5.0SMDJ16CA-001T7,SMBJ85A-HR,SMBJ54-001T13,TPSMB64CA-VR,SMAJ400-001,SMDJ24CA-HCA,SMDJ54A-001T13,SMAJ70-001,SMBJ8.5CA-HC,SMDJ36CA-HC,TPSMB36A-VR,SMAJ250CA-001T13,TPSMB250A-VR,5.0SMDJ100A-001T7,SMBJ8.5A-HRA,SMBJ16-001T13,5.0SMDJ26A-001T7,TPSMB54A-VR,SMDJ75CA-HCA,SMAJ18A-001T13,SMAJ22C-001,SMAJ150A-001T13,SMDJ43CA-1000,SMBJ16A-1000,5.0SMDJ64A-001T7,SMBJ5.0A-001,SMDJ9.0CA-HCA1,5.0SMDJ43A-1000,SMDJ54A-HRA,TPSMB43CA,SMBJ20CA-1000,SMAJ40A-001T13,SMBJ22-001,SMBJ20A-HR,SMCJ58CA-HC,TPSMB110CA,SMCJ28CA-001T13,TPSMB250A-UA,SMCJ58A-HRA,5.0SMDJ22A-001T13,SMCJ64A-001T13,SMDJ28C-001T13,SMAJ78CA-001,SMAJ8.0C-001,SMBJ20A-1000,SMBJ28CA-HCA,SMCJ58CA-HR,SMBJ20A-HC,SMDJ26A-001T13,SMDJ14CA-001,SMDJ75A-HRAT7,SMCJ8.5CA-001T13,SMAJ9.0CA-001T13,SMDJ15A-001,SMAJ13CA-HR,SMCJ90A-HCA,SMBJ17-001,SMBJ170CA-001,SMAJ43-001,SMBJ7.0A-HCA1,SMDJ36A-HCA,SMBJ36A-001T13,SMAJ12A-001T13,SMCJ6.5A-001T13,SMDJ33CA-HRA,SMBJ12A-HCA,SMBJ6.0A-HC1,SMBJ51C-001T13,SMDJ22A-HRA,SMAJ22CA-001,SMCJ30A-HRAT7,5.0SMDJ160A-001T7,SMCJ7.5A-001T13,SMBJ30A-001T13,SMDJ6.0A-HC,TPSMB14CA-VR,SMBJ6.0A-HCA,SMBJ64C-001,SMBLCE16-HCA,SMBJ11A-HCA1,SMBJ30CA-001T13,SMCJ160CA-HRAT7,SMDJ12A-HCA1,SMBLCE70-HR,SMBJ110A-001,SMBJ48CA-HR,SMCJ110CA-001,SMBJ15A-HC,SMDJ43A-HCA,SMDJ45A-001T13,SMBJ58A-HC,SMBJ36A-HRAT7,SMBLCE70-HC,SMCJ7.0A-HCA1,5.0SMDJ28A-001T13,SMCJ51CA-HRA,SMCG6.5CA-HRA,SMBJ58A-HR,SMDJ16CA-001T13,SMDJ9.0CA-HRAT7,SMCJ45A-001T13,SMDJ120A-001,SMBJ15A-HR,SMDJ15A-HRAT7,SMDJ6.0A-HR,SMBJ48CA-HC,TPSMD15CA-PL,SMCG90CA-HRA,SMCJ15CA-HRAT7,SMAJ36A-HR,TPSMD17CA,SMAJ160CA-001T13,SMCJ26A-001,SMBJ8.5-001T13,5.0SMDJ130A-001T13,SMCJ20A-001T13,TPSMD70CA,SMAJ64CA-001,SMAJ48A-1000,5.0SMDJ12CA-001T13,SMBLCE45-HR,SMDJ22CA-HR,SMDJ7.5CA-HCA1,SMCG28A-HRA,SMAJ200A-001,SMBLCE45-HC,SMCG6.0CA-HRA,SMDJ22CA-HC,SMDJ170A-001,SMCG28CA-HR,SMAJ36C-001,SMCJ170CA-001,SMAJ13A-HRA,SMAJ160A-001,TPSMC28A-VR,TPSMC200A,SMAJ54C-001,SMDJ130A-HCA,SMAJ48CA-1000,SMDJ64A-HRAT7,TPSMC150A-VR,SMAJ51CA-001T13,SMDJ12C-001T13,SMBJ16A-001,SMCJ100A-001T13,SMCG9.0A-HRA,SMCJ28CA-001,SMBJ110-001,SMCG9.0CA-HR,SMCG30CA-HRA,SMDJ58CA-HRAT7,SMAJ160CA-001,SMBJ30A-HRAT7,5.0SMDJ60A-001T13,SMCJ51A-001,TPSMB200CA-VR,SMCJ51A-HC,TP5.0SMDJ150A,SMBJ70C-001T13,SMAJ11C-001,SMBJ200A-JD,SMDJ18A-HRA,SMCJ51A-HR,SMDJ9.0CA-HCA,SMCJ180CA-HRA,SMAJ110A-001,SMDJ6.0A-HCA1,SMDJ10CA-HCA,SMBJ5.0A-HRA,SMBJ28CA-HRA,TPSMB27A,SMBJ30A-HRA,SMCG8.0A-HR,SMCJ6.0A-HCA,TPSMB250CA-VR,SMDJ70CA-HRA,8.0SMDJ40A-1000,TPSMB91CA,SMAJ440CA-001T13,SMBJ17A-001T13,SMAJ13CA-001T13,TPSMB24A,SMBJ48A-HCA,SMDJ18CA-HR,SMCJ12A-HRA,SMCJ33CA-HCA,SMAJ20CA-1000,SMBJ14CA-HCA,SMBJ8.5A-HCA,SMCG22A-HR,SMBJ150C-001T13,SMDJ6.5A-HCA1,SMAJ24A-001,SMDJ18CA-HC,SMCJ170A-HCA,TPSMB200CA-UA,SMBJ5.0CA-HC,SMCJ14CA-001,SMBJ8.5A-HC1,SMCJ8.5A-001,SMAJ15C-001,TPSMB8.5CA-VR,SMAJ14C-001T13,SMDJ130CA-HRAT7,SMAJ18C-001,SMBJ8.0C-001,SMAJ18CA-001,SMAJ130C-001,SMBJ5.0CA-HR,TPSMC85A-VR,SMAJ170CA-001T13,8.0SMDJ45A-1000,SMDJ90A-HRAT7,TPSMB22A,SMBJ14C-001,TPSMC15A-VR,SMCJ120A-HCA,SMCJ60A-HC,SMBLCE54-HR,SMAJ8.5-001,SMCG160CA-HRA,SMCJ26A-HRAT7,SMDJ6.0A-001,SMBJ16A-HCA1,SMAJ180C-001,SMDJ54A-001,SMCJ60A-HR,SMDJ70CA-1000,SMBJ130-001T13,SMBLCE54-HC,SMCJ58A-001,SMDJ17A-001T13,SMBJ6.5A-HR,TPSMC56A,SMDJ54CA-001T13,TPSMD43A-T7,SMBJ24A-HC,SMBJ30CA-HC,SMCG58CA-HRA,SMBJ160C-001T13,SMDJ11CA-HR,SMBJ160A-001,SMBJ26-001,SMBJ43C-001,SMCJ30A-1000,5.0SMDJ13A-001T13,SMDJ11A-HRA,SMDJ14CA-HRAT7,SMBJ6.5A-HC,SMDJ11CA-HC,TPSMC27CA,SMBJ24A-HR,SMBJ30CA-HR,SMBJ10-001T13,SMBJ7.5-001T13,SMDJ24CA-HRA,TPSMB20A,SMAJ33C-001T13,SMAJ220-001,SMAJ54-001T13,SMDJ30A-HC,SMBJ60CA-HCA,SMDJ30A-HR,5.0SMDJ30CA-001T13,SMCJ15A-HRAT7,SMDJ51CA-HRA,SMBJ8.5CA-HCA1,SMCJ33A-HRA,SMCG78A-HRA,TPSMB250CA-UA,SMCJ33CA-HR,SMAJ5.0CA-001,SMAJ8.5-001T13,SMCJ48A-HRAT7,8.0SMDJ22CA-1000,SMAJ45A-001,SMCJ70CA-HCA1,SMCJ75CA-001T13,SMDJ75CA-HRA,SMCG78CA-HR,SMBJ5.0CA-HRA,SMCJ33CA-HC,TPSMC60A-VR,TPSMB58A-VR,SMBLCE30-HC,SMDJ15CA-HR,SMCG78A-HR,TPSMC51A,SMDJ43A-HC,TPSMC11CA-VR,SMDJ22A-HCA,TPSMB43CA-VR,SMBJ15CA-HRAT7,SMDJ170A-HRA,SMBLCE30-HR,SMDJ15CA-HC,TPSMC90CA-VR,SMBJ8.0A-001T13,SMCJ54A-001T13,SMDJ120CA-HR,SMDJ43A-HR,SMCJ33A-HR,TPSMD85A,SMBJ60CA-HRA,SMDJ40A-HCA1,SMBJ13-001,SMBJ43-001T13,SMCJ110CA-HRA,SMCJ40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