【应用】离散型多层压敏电阻V9MLA0402在视频输入/输出中预防ESD侵害方案
用于超级视频和复合视频格式中的视频信号通常会在0.5至2.0Vp-p之间变化，最高频率可达5MHz。 在该频率下，需要考虑抑制器的电容量。 需要预防ESD侵害的信号线包括传输超级视频的亮度和色度数据及复合视频的单芯导线。
如在下图（上）所示的情况下，超级视频建议使用两个LITTELFUSE推出的离散型多层压敏电阻V9MLA0402进行保护。 而复合视频建议使用一个Littelfuse推出的离散型多层压敏电阻V9MLA0402进行保护即可。鉴于视频信号所具有的模拟特性，不建议使用单极瞬态抑制二极管阵列，因为这样可能会切断视频信号中的负极性部分。
除了上述建议外，Littelfuse的MLV产品组合还提供其它解决方案。 例如，如果制造工艺无法处理0402规格的元件，可选用具有同等属性的0603规格的器件。IEC 61000-4-2是最适合此接口的标准规范。 通过该测试可证明终端产品不易受到ESD危害。
V9MLA0402离散型多层压敏电阻采用了Littelfuse多层制造技术并采用了无引线、表面贴装技术。 ML系列与现代回流焊和波峰焊接程序兼容。它可在比齐纳二极管更广泛的温度范围下工作，并有比塑料组件布局更小的封装尺寸。工作电压和能量范围宽广，是无数电源设备、控制器件和信号线路等应用的理想之选。
下图所示的F型连接器专为显示器机顶盒视频电路而设计。 若该款F型连接器用于有线电视或卫星电视输入，那么，就应注意雷电浪涌，并且不能使用多层压敏电阻（MLVs）。 这种情况下，需使用气体放电管。
视频输入/输出的电路保护电路图
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本文由LEA酱的一生转载自LITTELFUSE，原文标题为:视频输入/输出的电路保护，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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【选型】Littelfuse（力特）压敏电阻-金属氧化物压敏电阻（MOV）选型指南
目录- 过压抑制 压敏电阻特性/术语/考量因素 压敏电阻连接示例 压敏电阻选择工作表 机构标准/免责声明 表面贴装式多层压敏电阻 径向引线式压敏电阻 工业高能端子压敏电阻 轴向引线型/专用型压敏电阻 薄型/专用型压敏电阻 高可靠型压敏电阻 TMOV®和iTMO系列 工业高能热保护压敏电阻 热保护压敏电阻 FBMOV系列
型号- V05E40P,V18MLA0805L,V18MLA0805N,V18MLA0805F,V385LA10CP,V220CH8 X,V575LA10P,V05P40P,VXXXDA40,V18MLA1210NHAUTO,V18MLN41206,TMOV14RP575E,V14H95P,V660LA100BP,TMOV34S201 EP,V10E250AUTO,TMOV34S461M,V130LA10C,V150LA20BP,TMOV14RP575M,V130LA10A,V681HG34,V10P130P,V142CA60,V270ZA05,V510LA40CP,V68ZA10P,V660LA100CP,TMOV34S661MP,V07P00P,V14H130P,V150LA20AP,V111HG34,V14P17AUTO,SMOV34S131MP,V05X50AUTO,V130LA20CP10,V22ZTX1,V3.5MLA1206,V22ZTX3,V140LA5,V47ZA7,V18RA8,V47ZA3,SMOV34S251MP,V47ZA1,V14P275P,V25S440P,V20X23P,V140LA2,V391HF34,V230LA40C,V3.5 MLA0603,TMOV34S421MP,SMOV34S131NP,V20P23AUTO,V30MLA0603,TMOV34S681M,SMOV34S251NP,V175LA20C,V230LA40A,V271HG34,V175LA20A,V20E35AUTO,V510LA40AP,TMOV34S111M,V12MLA0805L,V24RA22,V181HG34,V29MA2A,V480LTX40A,V360ZA05,V120CH8,V18ZA40PX10,V20P510P,V575LA10CP,Y9MLA0805LN,TMOV34S301MP,V18MLA0805LN,V150LA5P,RA22,V14P40P,V14P140P,V39ZA3P,V20X130P,V20E460AUTO,V20P175AUTO,V20P5AUTO,V14E40P,V625LA40A,V141DHB34,V441DHB34,TMOV34S331M,V460LA80CP,V10E30AUTO,V25S130P,V180ZA05,V321DB40,RA16,V56ZA20P,TMOV14RP750E,V3.5MLA0603NHAUTO,V481HF34,V10P150AUTO,TMOV14RP750M,V20E250P,V625LA80BP,V07E150P,V190SM7,V47ZA20P,V130LA20CX325,V20E625,V351DHB34,V05X25AUTO,V320LA40BP,TMOV34S201M,V180ZA10,V151CA32,V10P625AUTO,V14H175P,V30MLA0805LNHAUTO,V39ZA6P,V321HF34,V275LA10CP,V20E17AUTO,V481DB40,V200RA16 X2749,V8ZA1,V8ZA2,V20H320P,V20E275AUTO,V625LA80CP,V300LA40CX810,V10E14AUTO,V150LA2P,V571HF34,TMOV34S551M,V20P60P,V320LA40CP,V20E300AUTO,V14P85P,V20E60P,V20X20P,V180ZA20,V180ZA1P,V07E20AUTO,V82ZA05P,V251HB34,V20E550AUTO,V460LA10CP,V39ZA05,V10P440P,MA SERIES,V25S175P,V14H440P,V10E440P,V18MLA1206NHAUTO,V24ZTX50,VARISTOR,V575LA80CP,V100MA4B,1-2000B,V100MA4A,SMOV34S621MP,SM7,V250LA40CX620,V100MA,V26MLA1210NHAUTO,SMD,V0603MHS22F,V0603MHS22N,V230LA20CP,TMOV25SP130E,V10H40P,SMOV34S621NP,TMOV25SP130M,V14P320P,V20H25P,V230LA4,V120MLA1210N,V14MLA0805NHAUTO,V39ZA20,V39ZA1P,V551HF34,V571DB40,V0402MHS22NR,V881CA60,V330ZA05P,V430ZA05,V230LA40CP570,TMOV34S421EP,V120MA2S,V180ZA5P,V18MLN41206LWT,V20E60AUTO,V20X75AUTO,V07P7AUTO,V460SM7,V5.5MLA0603L,V480LTX80B,V5.5MLA0603N,V130LTX20B,V480LA10P,V18MA1B,V45MLA1812N,V14P85AUTO,V18MA1A,V14P42AUTO,TMOV34S151M,V230LA20AP,V20E385P,V575LA80BP,V07P320P,V20P550P,V18MA1S,V48MLA1210NHAUTO,V18ZT3P,V10H510P,V142BB60,V07X50P,V10E35P,V20X30AUTO,V20E140AUTO,V120MA1A,V150LA20C,V150LA20B,V150LA20A,TMOV34S301EP,V10E75AUTO,V14P40AUTO,V680ZA05,V661HB34,V33RA16,V05P50AUTO,175SM20,V130LA10AP,V07E460P,V200RA8,V275SM7,V20E320AUTO,V511DHB34,TMOV14RP625E,V120MA2B,V18MLA1210N,V48MLA1210LNHAUTO,TMOV14RP625M,V680LA10CP,V14X95P,V481HB34,V120MA1S,V20P14AUTO,V510SM7,V14P35AUTO,V14E440AUTO,V18MLA1206XXX,TMOV25SP175E,V18ZC3P,V07P75AUTO,V130LA10CP,TMOV25SP175M,V20P420P,V420LTX40B,V201HG34,V14E150P,V20P7AUTO,V07X95P,V271BA60,V751BA60,V100MA4S,V14P230P,V750ZA05P,V10P35P,V10P00AUTO,V251HF34,V20X60P,V300LA4,V300LA2,V240ZA05P,V82ZA4P,V301HF34,V10E25AUTO,V14E275AUTO,V14X17AUTO,V10P30P,V26MLA1206NHAUTO,V20E300P,V56MA2S,V10X25AUTO,V180ZA1,TMOV25SP440E,TMOV34S141MP,V10E30P,V180ZA5,V421DA40,V18MLN41206L,V05X30AUTO,V14X50P,TMOV25SP440M,V05E30AUTO,V282CA60,V82ZA5P,V68MLA1206,V250LA40CP620,V05X14AUTO,V18MLA0402F,V20H30P,V10E130P,TMOV34S511EP,V14E25AUTO,V750ZA05,V661BA60,SMOV34S,SM20,V56MA2B,V9MLA0402,V10H420P,V56MA2A,V07P140P,V07X17AUTO,V230LA40CX570,V20P25P,HF 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L1B5XXXXX,V9MLA0402LN,V420LA20AP,V30MLA1206N,V07E40P,V10E23AUTO,V14MLA0805LN,V10X20AUTO,TMOV34S141EP,V510LA,FBMOV385M,V14X11P,V07X75AUTO,V10H460P,V22RA16,V12ZA05,M83530/1-2200D,V10X30P,V20H460P,V07P23AUTO,V20P75AUTO,V9MLA0402LF,V05X40P,V18ZA40PX2855,V460LA40B,V460LA40C,V20P150AUTO,V625LA40AP,V25S750P,V680LA10,V420LA20CP,V27ZA4,V27ZA2,V07P85P,V14E230AUTO,V275LA10P,V39ZA05P,V141HF34,V27ZA1,V14H40P,TMOV20RP230M,V321HA40,V421HA32,V14E320P,V131BA60,V200RA16,TMOV20RP230E,V20P23P,V18MA,V9MLN41206,V10E50AUTO,V14X42AUTO,V
MLA Varistor Series Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > MLA Series data sheet
型号- V3.5MLA0805LN,V18MLA0805L,V18MLA0805N,V18MLA1206LNT,V26MLAA0805L,V85MLA1210N,V26MLA1210,V14MLA0805L,V3.5MLA0805,V5.5MLA0603LN,V26MLA0805,V14MLA0603N,V60MLA1210,V14MLA0805N,V18MLA1812N,V9MLA0805LN,V5.5MLA0603,V68MLA1206,V9MLA0402LN,V30MLA1206N,V26MLA1206,V30MLA1210N,V14MLA0805LN,V30MLA1210L,V18MLA0603N,MLA SERIES,V14MLA0402N,V56MLA1206N,V3.5MLA1206,V9MLA0402,V26MLA1210N,V18MLA1210,V3.5MLA1206N,V18MLA0402,V120MLA1210N,V14MLA1206,V18MLA0805,V18MLA0402N,V3.5 MLA0603,V30MLA0603,V120MLA1210,V5.5MLA0805L,V5.5MLA0805N,V5.5MLA0603L,V5.5MLA0603N,V12MLA0805L,V14MLA0805,V14MLA1206N,V45MLA1812N,V18MLA1206,V14MLA0402,V5.5MLA0402N,V60MLA1210N,V5.5MLA0402L,V26MLA1206A,V5.5MLA0805LN,V26MLA1206N,V9MLA0603LN,MLA,V30MLA0805LN,V38MLA1812N,V5.5MLA1206N,V48MLA1210,V18MLA0805LN,V68MLA1206N,V5.5MLA1206,V3.5MLA0603N,V85MLA1210,V26MLA0603,V3.5MLA0805L,V3.5MLA0805N,V3.5MLA0603,V30MLA1812N,V5.5MLA0805,V18MLA1206N,V18MLA1210N,V5.5MLA0402,V9MLA0603,V33MLA1206,V26MLA0805LN,V42MLA1206N,V42MLA1206,V9MLA0402L,V9MLA0402N,V18MLA1206XXX,V30MLA1210,V18MLA0603,V30MLA0603N,V30MLA0805L,V33MLA1206N,V48MLA1206N,V26MLA0805N,V48MLA1210LN,V9MLA0603L,V9MLA0603N,V56MLA1206,V48MLA1210L,V26MLA0603N,V48MLA1210N,V9MLA0805L,V30MLA1210LN,V14MLA0603,V5.5MLA0402LN,V12MLA0805LN
MLA Varistor Series Surface Mount Multilayer Varistors (MLVs)
型号- V3.5MLA0805LN,V18MLA0805N,V85MLA1210N,V3.5MLA0805,V5.5MLA0603LN,V26MLA0805,V14MLA0603N,V14MLA0805N,V18MLA1812N,V9MLA0805LN,V68MLA1206,V9MLA0402LN,V30MLA1206N,V30MLA1210N,V14MLA0805LN,MLA SERIES,V18MLA0603N,V14MLA0402N,V26MLA1206NS,V85MLA1206NS,V30MLA0805NS,V56MLA1206N,V3.5MLA1206,V30MLA1206NS,V26MLA1210N,V18MLA1210,V3.5MLA1206N,V38MLA1210NS,V18MLA0402,V18MLA0805NS,V120MLA1210N,V18MLA1206NS,V45MLA0805NS,V18MLA0402N,V30MLA0603,V120MLA1210,V5.5MLA0805N,V5.5MLA0603N,V14MLA1206N,V45MLA1812N,V5.5MLA0402N,V60MLA1210N,V26MLA0805NS,V9MLA0805NS,V5.5MLA1206NS,V22MLA1210NS,V5.5MLA0805LN,V26MLA1206N,V9MLA0603LN,V65MLA1206NS,MLA,V30MLA0805LN,V38MLA1812N,V5.5MLA1206N,V18MLA0805LN,V56MLA1206NS,V68MLA1206N,V3.5MLA0603N,V5.5MLA1210NS,V22MLA1206NS,V22MLA0805NS,V3.5MLA0805L,V3.5MLA0805N,V3.5MLA0603,V30MLA1812N,V14MLA1206NS,ML SERIES,V18MLA1206N,V18MLA1210N,V30MLA1210NS,V5.5MLA0402,V38MLA1206NS,V18MLA1210NS,V26MLA0805LN,V42MLA1206N,V5.5MLA0805NS,V26MLA1210NS,V9MLA0402L,V9MLA0402N,V18MLA1206XXX,V30MLA0603N,V30MLA0805L,V45MLA1206NS,V33MLA1206N,V48MLA1206N,V26MLA0805N,V48MLA1210LN,V9MLA0603N,V26MLA0603N,V48MLA1210N,V30MLA1210LN,V14MLA0805NS,V56MLA1210NS,V5.5MLA0402LN,V12MLA0805LN,V38MLA0805NS,V45MLA1210NS
MLA Varistor Series Metal-Oxide Varistors (MOVs)
型号- V3.5MLA0805LN,V18MLA0805L,V18MLA0805N,V85MLA1210N,V26MLA1210,V14MLA0805L,V3.5MLA0805,V5.5MLA0603LN,V26MLA0805,MHS SERIES,V14MLA0603N,V60MLA1210,V14MLA0805N,V18MLA1812N,V9MLA0805LN,V5.5MLA0603,V68MLA1206,V9MLA0402LN,V30MLA1206N,V26MLA1206,V30MLA1210N,V14MLA0805LN,V30MLA1210L,MLE SERIES,MLA SERIES,V18MLA0603N,V14MLA0402N,V56MLA1206N,V3.5MLA1206,V9MLA0402,V26MLA1210N,V18MLA1210,V3.5MLA1206N,V18MLA0402,V120MLA1210N,V14MLA1206,V18MLA0805,V18MLA0402N,V30MLA0603,V120MLA1210,V5.5MLA0805L,V5.5MLA0805N,V5.5MLA0603L,V5.5MLA0603N,V12MLA0805L,V14MLA0805,V14MLA1206N,V45MLA1812N,V18MLA1206,V14MLA0402,V5.5MLA0402N,V60MLA1210N,V5.5MLA0402L,V26MLA1206A,V5.5MLA0805LN,V26MLA1206N,V9MLA0603LN,V30MLA0805LN,V38MLA1812N,V5.5MLA1206N,V48MLA1210,V18MLA0805LN,V68MLA1206N,V5.5MLA1206,V3.5MLA0603N,V26MLA0603,V85MLA1210,V3.5MLA0805L,V3.5MLA0805N,V3.5MLA0603,V30MLA1812N,V5.5MLA0805,ML SERIES,V18MLA1206N,V18MLA1210N,V5.5MLA0402,V9MLA0603,V33MLA1206,V26MLA0805LN,V42MLA1206N,V42MLA1206,V9MLA0402L,V9MLA0402N,V18MLA1206XXX,V30MLA1210,V18MLA0603,V30MLA0603N,V30MLA0805L,V33MLA1206N,V48MLA1206N,V26MLA0805N,V48MLA1210LN,V9MLA0603L,V9MLA0603N,V56MLA1206,V48MLA1210L,V26MLA0603N,V48MLA1210N,V9MLA0805L,V30MLA1210LN,V26MLA0805L,V14MLA0603,V5.5MLA0402LN,V12MLA0805LN
Littelfuse（力特） MLA Varistor Series 数据手册
型号- V9MLA0603LN,V3.5MLA0805LN,MLA,V18MLA0805N,V30MLA0805LN,V38MLA1812N,V85MLA1210N,V5.5MLA1206N,V18MLA0805LN,V9MLA0603LF,V26MLA1210,V68MLA1206N,V18MLA0603F,V14MLA0805L,V3.5MLA0603N,V14MLA0603F,V5.5MLA0603LN,V14MLA0603N,V3.5MLA0805N,V14MLA0805N,V30MLA1812N,V18MLA1206N,V18MLA1812N,V9MLA0805LN,V30MLA1210H,V9MLA0402LN,V30MLA1206N,V30MLA1210N,V5.5MLA0603LF,V18MLA0402F,V18MLA1210N,V14MLA0805LN,V14MLA0402F,V5.5MLA0805NH,V18MLA0603N,V26MLA0805LN,V14MLA0402N,V42MLA1206N,V56MLA1206N,V26MLA1210N,V9MLA0402F,V30MLA0603F,V3.5MLA1206N,V5.5MLA0402LF,V18MLA0805LNH,V120MLA1210N,V26MLA1210NH,V9MLA0402N,V18MLA1206XXX,V30MLA0603N,V9MLA0402LF,V18MLA0805,V18MLA0402N,V120MLA1210,V33MLA1206N,V9MLA0805LNH,V48MLA1206N,V26MLA0805N,V48MLA1210LN,V5.5MLA0603H,V9MLA0603N,V5.5MLA0805N,V26MLA0603N,V48MLA1210N,V5.5MLA0603N,V12MLA0805L,V30MLA1210LN,V5.5MLA0603NA,V5.5MLA0603NH,V14MLA1206N,V26MLA0603F,V45MLA1812N,V14MLA0603,V14MLA0402,V60MLA1210N,V5.5MLA0402N,V5.5MLA0402LN,V26MLA1206N,V5.5MLA0402F,V5.5MLA0805LN,V12MLA0805LN
【应用】最大数据传输速率为256kbps的低速系统RS-232串行端口免受ESD损害方案
用于RS-232端口的信号可在-12V至 +12V之间变化，最大数据传输速率为256kbps。需要免受ESD影响的信号线包括RD、TD、 RTS、 CTS、 DSR和DTR。可使用Littelfuse推出的离散型多层压敏电阻V14MLA0402，让电路板布局更为灵活，如要减少零配件数量，可使用一个单个夹轨器，由多个SP723ABTG离散型多层压敏电阻组成。
应用方案 发布时间 : 2018-10-28
【应用】最大数据传输速率为256kbps时，在低速输入/输出端口信号线避免ESD影响保护方案
用于低速输入/输出端口的信号可在-12V至+12V之间变化，最大数据传输速率为256kbps。此时在低速输入/输出端口信号线避免ESD影响保护方案可使用Littelfuse推出的离散型多层压敏电阻V14MLA0402，让电路板布局更为灵活，如要减少零配件数量，也可使用Littelfuse推出的瞬态抑制二极管阵列SP723ABTG。
应用方案 发布时间 : 2018-10-25
【应用】最大频率小于30kHz时，声频输入/输出信号线避免ESD损害方案
音频信号的最大值为12Vp-p，最大频率小于30kHz。声频输入/输出信号线需避免受到ESD影响的信号线包括左、右通道。可使用Littelfuse推出的分立式多层压敏电阻V14MLA0402，以便灵活布局。若信号负值为-0.5V或更小时使用单级瞬态抑制二极管阵列SP1001-02XTG，因为它们可在量值较大时削减音频信号的该部分值。
应用方案 发布时间 : 2018-10-27
MLA Varistor Series Surface Mount Multilayer Varistors (MLVs) Varistor Datasheet
型号- V9MLA0603LN,V3.5MLA0805LN,MLA,V18MLA0805N,V30MLA0805LN,V38MLA1812N,V5.5MLA1206N,V85MLA1210N,V18MLA0805LN,V68MLA1206N,V3.5MLA0603N,V5.5MLA0603LN,V14MLA0603N,V3.5MLA0805N,V14MLA0805N,V30MLA1812N,V18MLA1206N,V18MLA1812N,V9MLA0805LN,V9MLA0402LN,V30MLA1206N,V30MLA1210N,V18MLA1210N,V14MLA0805LN,MLA SERIES,V18MLA0603N,V26MLA0805LN,V14MLA0402N,V42MLA1206N,V56MLA1206N,V26MLA1210N,V3.5MLA1206N,V120MLA1210N,V9MLA0402N,V18MLA1206XXX,V30MLA0603N,V18MLA0402N,V33MLA1206N,V48MLA1206N,V26MLA0805N,V48MLA1210LN,V9MLA0603N,V5.5MLA0805N,V26MLA0603N,V48MLA1210N,V5.5MLA0603N,V30MLA1210LN,V14MLA1206N,V45MLA1812N,V5.5MLA0402N,V5.5MLA0402LN,V60MLA1210N,V5.5MLA0805LN,V26MLA1206N,V12MLA0805LN
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可加工PCB板层数：1~30层，板材类型：单双面板/多层板/HDI盲埋孔板/高频高速板/微波射频天线板/高精度阻抗板/厚铜板/微波FR4/耐腐蚀光模块PCB等，成品尺寸：5*5cm~58*70cm； 板厚0.2~6mm。
最小起订量： 1 提交需求>
可加工板材类型：HDI线路板/高频线路板/高导热金属基线路板/厚铜板。成品尺寸：5x5mm~ 508x1200mm，最小孔径：0.15mm；最小线宽线距：2.5MIL/2.5MIL。
最小起订量： 1 提交需求>
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