【应用】阿赛姆科技推出基于共模滤波器和ESD器件的HDMI端口辐射（EMI）超标解决方案

时间： 2023-02-07 来源：ASIM官网

技术问答

本文将介绍HDMI端口辐射（EMI）超标解决方案，详细内容如下。

HDMI EMC设计要求

●HDMI EMC设计原理图

图 1

●HDMI元件选型及参数说明：（图1所示）

①.L510、L511、L512、L513使用专业EMI共模滤波器（普通共模电感寄生电容太大，会导致TMDS差分阻抗匹配测试失败），阻抗值为90~100Ω（两路共模滤波器型号：CMF1210DH900MFR；四路共模滤波器型号：CMF2010DH101MFR），

②.U1、U2为排式ESD（ESD排型号：ESD0524PA），越低的结电容才能保证信号传输质量不受影响。并且能够更好的进行PCB布局及进行差分布线

③.CR3548、CR3549、CR3550、CR3551为单颗ESD（型号：CV0402VT6001T），越低的结电容，响应速度快。

●HDMI接口PCB设计

①.元器件布局：元器件布局要紧凑，要按信号流向进行元件放置，遵循先防护后滤波的原则，ESD器件（ESD0524PA）要靠近HDMI座子引脚，ESD器件（ESD0524PA）后面为共模滤波器（CMF1210DH900MFR或CMF2010DH101MFR）。

②.走线设计：每组差分信号走线要保证平行等长走线，在保证阻抗匹配的原则下，走线尽可能越短越好，周围用地线包信走线，并且打过孔到地层；信号走线尽量避免换层，不同层的阻抗和过孔等差别会降低差模传输效果而引入共模噪声；避免90度走线。避免高速信号线下面敏感信号走线，以防止发生EMI耦合和端口ESD放电时的耦合干扰。

●HDMI信号电缆及结构设计

一根好的信号电缆可以决定HDMI是否符合EMI要求，四对差分线采用屏蔽双绞线传输，每对差分线与一根地线构成一组，用铝箔包裹线芯；最外层用金属箔和编织网屏蔽（屏蔽网与金属箔的接地：屏蔽网与金属箔两端都要求接地，地两端的HDMI插头形成360度良好搭接），由于HDMI的传输特性，两端可能还需要加上磁环，才能有效降低EMI辐射能辐。

整改案例

●测试数据

图 2

整改方案

●测试描述

原装机器测试时发现148.44MHz、595.13MHz严重超标，经计算刚好是HDMI时钟倍频。

●整改分析

拆开机器，发现客户PCB原本设计共模的位置，贴的是33Ω电阻，HDMI后的ESD位置空贴。经分析后，去掉原来的33Ω电阻，更换为共模滤波器：CMF1210DH900MFR，原来空置的ESD位置增加：ESD0524PA。重新装机测试后OK（见整改后数据）。测试时重新换了一根已经验证过OK的HDMI信号电缆。

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本文由三年不鸣转载自ASIM官网，原文标题为:HDMI端口辐射（EMI）超标解决方案，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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WAYON（维安）电路保护产品选型指南

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选型指南 - WAYON - 2023/6/12 PDF 英文下载

Littelfuse（力特）电路保护产品选型指南

目录- Company profile Circuit Protection Technologies Overcurrent/Overvoltage Protection device ESD Suppression Solutions Overcurrent Protection/Overvoltage Protection Applications Common Circuit Threatsand Protection Solutions Fuses Fuse Holders PPTC Devices Varistors Gas Discharge Tubes ESD Suppressors TVS Diode Arrays Protection Ics TVS Diodes PLED Bypass Protectors SIDACtor® Protection Thyristors Circuit Breakers

型号- PXXX0SAMC,LS2406ERQ23,1812L,LVR,SPHV,30KPA-HR,456SE,456SD,15KPA,345 SERIES,ITV9550 30A,AQ24CANFD,SDP,AC,RUEF110S,LS2406ERQ33,PXXX2AC,MICROSMDCH,562 SERIES,AQ1003-01ETG,SDPXXX0T023G5,150603,800,801,802,804,806,807,BA,808,BB,PGB2,PGB1,P4SMA,TSM600,PTF070,MICROASMD,SC1103C-01UTG,PTF078,PTF077,LS0504EVT233,PTF075,AQXXC-01LTG,810,811,356 SERIES,5KP,813,FB65,814,FB66,CA,CG,CH,PTF080,286677,PICOASMDCH,PXXX2AX,MINIASMDC,SMF4L,121004,B61089BDR,282008,121001,282007,820,121003,AK10-Y,821,121002,282002,823,824,282001,FB55,DA,828,DB,FB58,NANOASMDCH,820-20,830,831,834,835,TP5KP,101001,3453,3452,605,606,RKEF,607,PXXX2ACMC,LS12052BD33,AGRF,PTF0080M,B61089QDR,RUEF135V,850,851,852,3455,853,AHEF100,60R,617,618,GTCX36-XXXM-R05,PXXX0Q12X,860,862,HA,HB34,GTCX36-XXXM-R10,2920L,SP8008,AQ4337-01ETG,155 SERIES,P6SMB,803-01 SERIES,SLD,810 SERIES,870,PTF015,874,875,876,342 SERIES,877,5.0SMDJXXS-HRA,348 SERIES,30KPA,SM7,SM24CANB,SMCG-HR,TSV250,FC09B1606NL-0,SMD,SMF,TPSMB-VR,881,35408 SERIES,OMN002,400,OMN004,885,35406 SERIES,881 SERIES,OMN006,646,405,647,V20H275AUTO,407,649,RXEF,101010,52100001009,AQ24CANA,AQHVXX-01LTG,656,101002,PXXXXDF,658,101003,5KPA-HR,824-20 SERIES,5.0SMDJ,570 SERIES,AQ3530-01FTG,B-SERIES,662,663,422,664,665,LA,SMBLCE-HR,L-SERIES,AQHVXX-01LTG-C,PTF050,SC1105-01UTG,PTF055,G-SERIES,435,437,438,A-SERIES,870 SERIES,PTF065,440,RGEF,437A,441,SP1103C,443,202,203,254 121,445,446,688,447,3453 SERIES,448,449,208,209,TR600,04450001,PTF030,438A,451,SRP,452,453,454,TSM250,PTF035,213,456,215,821 SERIES,458,216,LV ULTRAMOV,459,217,218,SP3401,SP3400,AQ3522-01FTG,TPSMC,FHN26G2,TPSMB,PTF040,TPSMD,LS2405IDD23,PTF045,460,461,5KPA-HRA,462,220,464,465,466,224,467,225,576 SERIES,468,254 101,229,BXXX0CX,SL0902A,102080,470,BXXX1UX,471,472,230,473,232,233,501A,476,234,235,477,MIDSMD,PXXX4UCMC,239,MHS,850 SERIES,813 SERIES,AQ1205-01ETG,483,RA,485,487,802 SERIES,259UL913,ITV4030 22A,SM20,345121,102064,254 201 - 208,251,494,PLEDXUX,253,SD,SE,SG,SH,259,4.0SMDJ,SL1002A,SM,15KPA-HRA,15KPA-HR,GTCX37-XXXM-R10,102074,102076,102079,102078,NANOSMDCH,GTCA28-XXXM-R03,NY61AP,262,102071,263,265,266,3.0SMC,267,DSLP,268,269,LOW RHOPTC,520 002,520 003,520 004,SL1003A,520 005,1KSMB,345101,MLA,LS24062RQ23,1210L,AQ36CANA-02HTG,445073,MLE,MHP-TAM15,272,273,MLN,M-SERIES,274,E-SERIES,275,278,279,AQ3102-02HTG,MHP-TAC6,803-01,MHP-TA,285,AQ3041,SMBLCE-HRA,PLEDXUSXA,SP4322-01ETG,AQ3045,TP1.5KE,SP4208,SC1205-01ETG,820-20 SERIES,354 SERIES,CG33.0L,SP11XX,359 SERIES,MS-SERIES,111 SERIES,100 SERIES,NANOSMDC,346877,PICOASMDCH010F-2,340 SERIES,AHRF300,AHEF,342025,342024,342021,ZA,AQ3400,XGD,FH604,AQ1250-01ETG,PXXX3ACMC,FH602,PXXX6U,SP4010,342006,PLEDXN,SZD200,HG34,PLEDXS-A,J-SERIES,824 SERIES,FEMTOASMDC,ITV5432 30A,AK6-Y,557 SERIES,SL1021A,SL1021B,SP4020,SP4022,SP4021,SMDCH,SP4024,281010,SP4023,PLED,MINISMDC,AXXXXUX6,254 011 - 008,SMTAK3,PXXX0Q22XLH,MHP-TAM6,AK15,445005,281007,154T,281008,281005,AK10,AQ1005,51800001009,PXXXXS4X,ITMOV,354701 SERIES,483A,445004,LS05006VPQ33,SP4044,BXXX1UC4,SP4045,5200001,SMBJ,AQXX-01LTG,AQ7538-08UTG,SP1064E-04UTG,TCF250,SMTOAK2,SMAJ,AQ7520-08UTG,PXXX3AX,NANOASMDC,461E,811 SERIES,800 SERIES,157T,FC51,PXXX1U,PXXX1S,TRF250,SMBJ-HRA,SMDJ,CG3,SP3384NUTG,CG2,CG5,CG4,2205,CG7,B3XX4UX,CG6,VLP,VLR,0603L,PLEDXUX-A,SMCJ,PICOASMDC,LS0504EDD12,SMD2,PXXX0Q22C,GTCX35-XXXM-R05,SMDJ-HR,SMDC,TMOV34S,AHRF,440A,AXGD10603NR,K-SERIES,TPSMC-VR,H-SERIES,SZ1SMB,SZ1SMC,SZ1SMA,219XA,AK20-Y,ITV9550L2030MR,441A,SZ1.5SMC,SP1250-01ETG,C-SERIES,SC1210-01ETG,TB-SERIES,0402L,ITV9550 45A,AHRL,DHB34,FHN26W,AUML,TP6KE,LTKAK3,AQRV05-4HTG,LTKAK2,72R,977,TLP,LTKAK6,AQ15CANA-02HTG,PXXX3AC,SP3205-01ETG,501,3452 SERIES,504,505,506,507,GTCX23-XXXM-R01,508,8.0SMDJ,PXXX3U,100060,100061,100062,122090,100063,100064,100065,PXXX0SX,100066,SC1533-01LTG,SPHV-C,AHS,122093,150318,TS600,150319,150316,150317,150315,AQ3102-02JTG,150312,513,514,100058,100059,2016L,286377,122088,122087,559 SERIES,122083,GTCX26-XXXM-R05,521,523,AK15-Y,100067,526,150322,527,PXXX2SXLH,SL1411A,AK1,AK3,AK6,VTP,422A,SMCJ-HRA,ASMD,C-III,SR70,0805L,860 SERIES,RHEF,SMF3.3,303,304,305,308,35409,35408,35407,35406,TPSMA6L,PXXX2SX,SP724,SP725,SC1115-01UTG,TSL250,LOW RHO,HMOV,SP723,SP720,SP721,312,313,30R,314,556,315,557,559,318,SLD6S,SP1305,SP712,560,562,322,564,324,325,326,328,SLD5S,CX-SERIES,570,571,332,SLD8S,PXXX0SD,576,TRF600,PICOSMDC,3.0SMCJ,SZSMF,LS1205EVD33,SP1326,AQ12CANA-02HTG,340,150307,100,342,FHN20G,344,345,35407 SERIES,348,SMAJ-HRA,150300,AUMOV,LTKAK10,445 SERIES,SC1333-01ETG,RUEF,GTCX25-XXXM-R02,GTCX25-XXXM-R05,LS0502SCD33,111,354,356,52000001009,359,824-20,SP3420,150274,RUSBF,SP1003,SP3422,PXXX0ME,564 SERIES,SP2555NUTG,51900001009,10207101009,520 101,369,SL1122A,571 SERIES,SP1233,AQ2555NUTG,SP1255P,600R,PXXX4UX,WB07B0606LG,370,372,1.5SMC,TLPA,373,1.5SMB,374,SZSMF4L,377,820 SERIES,254 131,PXXX1CX2,SEPXXXXQ38,00300210,SZW200,TP5.0SMDJ,523 SERIES,SP1005,SP1006,CG32.0L,382,AQ1205-01FTG,383,385,35409 SERIES,407A,V14H460AUTO,SMA6L,391,392,CG32.5L,N-SERIES,SMA6J,395,3425L,F-SERIES,154,396,397,398,157,399,159,SC1122-01UT

选型指南 - LITTELFUSE - v0420 - 0420 PDF 英文下载

Circuit Protection Products Selection Guide

型号- PXXX0SAMC,LS2406ERQ23,1812L,LVR,SPHV,30KPA-HR,456SE,456SD,15KPA,SP33R6-04UTG,345 SERIES,1210,ITV9550 30A,AQ24CANFD,SDP,AC,LS2406ERQ33,PXXX2AC,RUEF110S,MICROSMDCH,562 SERIES,AQ1003-01ETG,SDPXXX0T023G5,150603,800,801,802,804,806,807,BA,808,BB,PGB2,PGB1,P4SMA,TSM600,PTF070,MICROASMD,SC7520-08UTG,SC1103C-01UTG,PTF078,PTF077,559 SERIES,LS0504EVT233,PTF075,AQXXC-01LTG,810,811,356 SERIES,5KP,813,814,FB65,FB66,CA,SC7538-08UTG,CG,CH,PTF080,286677,PICOASMDCH,PXXX2AX,MINIASMDC,SMF4L,121004,B61089BDR,282008,121001,282007,820,121003,AK10-Y,821,121002,282002,823,824,282001,FB55,DA,828,DB,FB58,NANOASMDCH,820-20,830,831,834,835,PLED ULTRA LOW,101001,3453,3452,605,606,RKEF,607,PXXX2ACMC,LS12052BD33,AGRF,PTF0080M,B61089QDR,RUEF135V,850,851,852,3455,853,AHEF100,60R,617,618,GTCX36-XXXM-R05,FEMTOSMD,PXXX0Q12X,860,862,HA,PICOASMD,HB34,GTCX36-XXXM-R10,2920L,SP8008,AQ4337-01ETG,155 SERIES,P6SMB,803-01 SERIES,SLD,810 SERIES,870,PTF015,874,875,876,342 SERIES,877,5.0SMDJXXS-HRA,348 SERIES,30KPA,SM7,SM24CANB,SMCG-HR,TSV250,FC09B1606NL-0,SMD,SMF,TPSMB-VR,881,342006 W,35408 SERIES,OMN002,400,OMN004,885,35406 SERIES,881 SERIES,OMN006,646,405,647,V20H275AUTO,407,649,RXEF,101010,52100001009,AQ24CANA,AQHVXX-01LTG,656,101002,PXXXXDF,658,101003,5KPA-HR,5.0SMDJ,570 SERIES,AQ3530-01FTG,B-SERIES,662,1206L400SLWR,663,422,664,665,LA,SMBLCE-HR,L-SERIES,AQHVXX-01LTG-C,PTF050,SC1105-01UTG,PTF055,G-SERIES,435,437,438,ITV5432,A-SERIES,870 SERIES,PTF065,440,RGEF,437A,441,SP1103C,443,202,203,254 121,445,446,688,447,3453 SERIES,448,449,ULTRAMOV™ 25S,208,209,TR600,04450001,PTF030,438A,451,SRP,452,453,454,TSM250,PTF035,AUMOV®,213,456,215,821 SERIES,458,216,LV ULTRAMOV,459,217,218,SP3401,SP3400,AQ3522-01FTG,P6KE,TPSMC,FHN26G2,TPSMB,PTF040,TPSMD,LS2405IDD23,PTF045,460,461,5KPA-HRA,462,220,464,465,466,224,467,225,576 SERIES,468,254 101,229,BXXX0CX,SL0902A,102080,470,BXXX1UX,471,472,230,473,232,233,501A,476,234,235,477,MIDSMD,PXXX4UCMC,239,MHS,P4KE,850 SERIES,813 SERIES,AQ1205-01ETG,483,RA,485,487,802 SERIES,259UL913,ITV4030 22A,SP3530,SM20,345121,102064,345121 SERIES,254 201 - 208,251,SA,494,PLEDXUX,253,SD,SE,SG,SH,259,4.0SMDJ,SL1002A,SM,15KPA-HRA,15KPA-HR,GTCX37-XXXM-R10,102074,102076,102079,102078,NANOSMDCH,GTCA28-XXXM-R03,NY61AP,262,102071,263,265,266,3.0SMC,267,DSLP,268,269,520 002,520 003,520 004,SL1003A,520 005,1KSMB,345101,MLA,LS24062RQ23,1210L,AQ36CANA-02HTG,445073,MLE,MHP-TAM15,272,273,MLN,M-SERIES,274,E-SERIES,275,278,279,AQ3102-02HTG,MHP-TAC6,803-01,MHP-TA,285,AQ3041,SMBLCE-HRA,PLEDXUSXA,SP4322-01ETG,AQ3045,TP1.5KE,SP4208,SC1205-01ETG,820-20 SERIES,354 SERIES,CG33.0L,SP11XX,359 SERIES,ULTRAMOV25S,MS-SERIES,111 SERIES,100 SERIES,NANOSMDC,346877,PICOASMDCH010F-2,340 SERIES,AHRF300,AHEF,342025,342024,342021,ZA,AQ3400,XGD,FH604,AQ1250-01ETG,PXXX3ACMC,FH602,PXXX6U,SP4010,PLEDXN,SZD200,TPSMF-4L,HG34,PLEDXS-A,J-SERIES,824 SERIES,FEMTOASMDC,ITV5432 30A,AK6-Y,557 SERIES,SL1021A,SL1021B,SP4020,SP4022,SP4021,SMDCH,SP4024,281010,SP4023,PLED,MINISMDC,AXXXXUX6,254 011 - 008,SMTAK3,PXXX0Q22XLH,MHP-TAM6,AK15,445005,281007,154T,281008,281005,SC1004U-ULC-04UTG,AK10,1.5KE,AQ1005,51800001009,PXXXXS4X,ITMOV,354701 SERIES,483A,445004,LS05006VPQ33,SP4044,BXXX1UC4,SP4045,5200001,SMBJ,AQXX-01LTG,AQ7538-08UTG,SP1064E-04UTG,TCF250,ITV9550,SMTOAK2,SMAJ,AQ7520-08UTG,PXXX3AX,NANOASMDC,461E,811 SERIES,800 SERIES,157T,FC51,PXXX1U,PXXX1S,TRF250,SMBJ-HRA,SMDJ,CG3,SP3384NUTG,CG2,CG5,CG4,2205,CG7,B3XX4UX,CG6,VLP,VLR,0603L,PLEDXUX-A,SMCJ,PICOASMDC,LS0504EDD12,SMD2,PXXX0Q22C,GTCA28,GTCX35-XXXM-R05,SP00R6-01WTG,SMDJ-HR,SMDC,TMOV34S,AHRF,440A,AXGD10603NR,K-SERIES,TPSMC-VR,H-SERIES,SZ1SMB,SZ1SMC,SZ1SMA,219XA,AK20-Y,ITV9550L2030MR,ULTRAMOV,441A,824 - 20 SERIES,SZ1.5SMC,SP1250-01ETG,C-SERIES,SC1210-01ETG,TB-SERIES,0402L,ITV9550 45A,AHRL,DHB34,FHN26W,AUML,TP6KE,LTKAK3,AQRV05-4HTG,LTKAK2,72R,977,TLP,LTKAK6,AQ15CANA-02HTG,XTREME,PXXX3AC,SP3205-01ETG,501,3452 SERIES,504,505,506,507,GTCX23-XXXM-R01,508,8.0SMDJ,PXXX3U,100060,100061,122090,100062,100063,100064,100065,PXXX0SX,100066,SC1533-01LTG,SPHV-C,AHS,122093,150318,TS600,150319,150316,150317,150315,AQ3102-02JTG,150312,513,514,100058,100059,2016L,286377,SP4337-01WTG,122088,122087,122083,GTCX26-XXXM-R05,521,523,ITV4030,AK15-Y,100067,526,150322,527,PXXX2SXLH,SL1411A,AK1,AK3,AK6,VTP,422A,SMCJ-HRA,ASMD,C-III,SR70,0805L,860 SERIES,RHEF,SMF3.3,303,304,305,308,35409,35408,35407,35406,TPSMA6L,PXXX2SX,SP724,SP725,SC1115-01UTG,TSL250,LOW RHO,HMOV,SP723,SP720,SP721,LVR025K-2,312,313,30R,314,556,315,557,559,318,SLD6S,SP1305,SP712,LCE,560,562,322,564,324,325,326,328,SLD5S,CX-SERIES,345101 SERIES,570,571,332,SLD8S,PXXX0SD,576,TRF600,PICOSMDC,SP3522,3.0SMCJ,SZSMF,LS1205EVD33,SP1326,AQ12CANA-02HTG,340,150307,100,342,FHN20G,344,345,35407 SERIES,348,SMAJ-HRA,150300,AUMOV,LTKAK10,445 SERIES,SC1333-01ETG,RUEF,GTCX25-XXXM-R02,GTCX25-XXXM-R05,LS0502SCD33,111,354,356,52000001009,359,SP3420,150274,RUSBF,SP1003,SP3422,560 SERIES,PXXX0ME,564 SERIES,SP2555NUTG,51900001009,10207101009,520 101,369,SL1122A,571 SERIES,824 - 20,SP1233,AQ2555NUTG,SP1255P,600R,PXXX4UX,WB07B0606L

选型指南 - LITTELFUSE - 2023/4/21 PDF 英文下载

GoalTop (高特) ESD防护器件产品介绍

描述- ESD Protection Device Presentation

型号- GESD0801S,SR05,PESD1CAN,GESD0566P,CDSOT23-TXXC,GESD0801M,CDSOD323-SDXXC,PESD5V0F1BL,PSOTXXC,PESD5V0F1BSF,PESD5V0V1BL,UCLAMP0521P,GESD081302,AZ1065-06F,NUP2105L,PSM712,AZC199-04S,GBLCXXCI,ESD5ZXXXT1G,GESD5B5CL,GESD0801PB,AZ2015-02S,ESDR0524P,PESD5V0L1BSF,GSMXX,GSDXXC,GESD5ZXXX,GSR05LC,PSDXXC,SDXX,AZ1045-04F,GESD2203-25,CD143A-SR05,IP4181/3CZ,RCLAMP0524P,UCLAMP2512T,RCLAMP0504S,PRTR5V0U2X,GSM712,AZ2225,GESD2105L,SM712,GESD0524P,GESD0504P,GSDXX,GESD0504D,ESD7951,GESD0501SA,SDXXC,GESD2204-25,GESD2201-33,RCLAMP2574N,RCLAMP3304N,AZ2015,AZ1015-02N,PSDXX,CDDFN10-0524P,PRTR5V0U4D,PSR05,RCLAMP0504P,PESDXXXL1BA,SMXX,CDSOD323-TXXLC,CDSOT23-SM712,PESD5V0U1BB

商品及供应商介绍 - 高特 PDF 中文下载

解析静电二极管的导电特性

静电二极管是一种专门设计用于防止ESD损害的半导体器件，通过其导电特性在保护电子元件方面发挥重要作用。本文中辰达行来为大家解析静电二极管的导电特性，希望对各位工程师朋友有所帮助。

技术探讨发布时间 : 2024-08-30

【产品】HDMI2.1/USB Type-C端口用静电防护器件ULC3324P10，漏流仅0.1μA，寄生电容低至2PF

在产品集成化越来越高的今天，产品自身的抗浪涌能力却越来越弱。在消费类电子产品中，往往产品的损坏都是因为静电导致的，所以各信号端口的静电防护是不可或缺的。优恩半导体ULC3324P10作为高度集成的ESD器件，在拥有优越的静电防护性能外，漏流仅有0.1μA，在寄生电容上仅有2PF，既能防护静电，又能保证不干扰信号的高速传输。

新产品发布时间 : 2021-08-24

高特新推9款车规级ESD防护器件，可为CAN、USB、HDMI、SIM/SD卡、天线、音视频、电源线等提供保护

高特推出GSM24C-A、GSM36C-A、GESD1524-A等九款车规级ESD防护器件，可为CAN、LIN、USB、HDMI、音视频、触屏、按键、电源线等端口提供ESD或EOS防护，可以避免或大幅减少这些端口的控制IC因ESD或EOS造成的损坏。

原厂动态发布时间 : 2023-04-21

USB redriver 的USB2.0端口具备short to battery(12v系统) 的保护；现主要针对此端的 ESD 防护，麻烦推荐个型号，谢谢。

推荐国产强茂PEC1605系列USB保护产品，以及ESD保护阵列XE6TLC5VU，相关资料请查阅以下链接：PEC1605M1Q-AU_R1_000A1 【选型】USB端口ESD防护推荐国产低电容ESD阵列XE6TLC5VU，单颗产品可同时保护双USB端口【产品】0.2pF极低断态结电容的5V ESD保护器件PE1605C2A，适于USB 3.0数据线保护等应用【产品】低结电容ESD保护器件PE1605M4AQ，适于USB Type-C、HDMI等接口应用

技术问答发布时间 : 2020-06-20

HDMI端口静电防护使用什么器件？

推荐使用硕凯（SOCAY）的ESD静电抑制二极管，推荐型号SE05NRE14GA，其主要特点：阵列型号ESD，节省PCB板子空间，静电Contact±17KV/Air±25KV，低容值（＜1pF），响应速度快（＜1ps），钳位电压精准（误差±5%）。具体见数据手册：https://www.sekorm.com/doc/1182907.html

技术问答发布时间 : 2019-04-11

【产品】采用先进的单片硅技术的4线超低电容TVS二极管，I/O与I/O间结电容典型值为0.3pF

萨瑞微电子推出一款4线超低电容TVS二极管SEU3304PC，利用先进的单片硅技术，可提供快速响应时间和低ESD钳位电压特性，使该器件成为保护对电压敏感且用于高速数据传输的HDMI和USB端口的理想解决方案。

产品发布时间 : 2022-08-26

【产品】4路保护ESD保护器ULC0524P，0.8PF超低容值，适用于USB3.0/HDMI1.4端口

在电子行业中，静电素来被称为“隐形杀手”，电子产品在使用中都存在被着静电的干扰，导致电子产品使用安全工作存在隐患。大多数的静电都是从产品端口干扰到设备内部的，作为现今使用最广泛的数据端口USB，做好其端口的静电防护至关重要。优恩半导体开发的ULC0524P属于整列型ESD，能同时保护四路信号，拥有0.8PF的超低容值，在为器件提供静电保护的同时，又能最大限度的避免影响数据传输速率。

新产品发布时间 : 2021-08-21