【经验】解析如何挑选压敏电阻

时间： 2023-03-10 来源：顺络Sunlord公众号

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防浪涌用压敏电阻和普通压敏电阻有什么不同，选型时要关注哪些参数？本文顺络电子将从以下几个方面进行介绍。

浪涌电流电压的持续时间比较长（可能达数mS），产生的能量比较大。用以浪涌防护的压敏电阻必须能够吸收较大的脉冲能量，为了实现这个性能，一般防浪涌用的压敏电阻尺寸较大（3225～5650）。

选型时，关注以下参数：

(1)压敏最大工作电压一定要大于系统的工作电压。

(2)额定脉冲耐量，表现在两方面：通过10/1000μs脉冲波形时吸收的能量和通过8/20uS脉冲波形的峰值电流，需要根据线路的具体情况，一般来说，该值越大代表压敏电阻能够吸收的瞬间能量也越大。

(3)限制电压，表示压敏电阻在指定脉冲电流波形条件下，在压敏电阻器上承受的最大电压，该电压必须远小于器件能够耐受的过电压。

顺络电子的压敏电阻的系列中特征代码“A/E/H/S”是什么意思？如何选型？

顺络电子SDV系列压敏电阻有四种类型，SDV-A系列，SDV-E 系列，SDV-H系列，SDV-S系列。

SDV-A系列：电容较大(＞100Pf)，脉冲能量的峰值较高，用于过电压保护以及ESD对策。

SDV-E系列：电容较低（10~100pF），用于一般的ESD对策。

SDV-H系列：电容很低（＜10pF），用于高速信号线上的ESD对策。

SDV-S系列：电容很低且工作电压也很低，用于高速信号线上的ESD对策。

选择压敏电阻时，请注意以下四点：

(1)直流工作电压：压敏电阻的最大直流工作电压（＞信号线路的最大直流电压）。

(2)电容：须适合于不同的信号频率。低电容值适用于高频信号。

(3)布线：接近ESD源。

(4)接地：优良的接地设计。

压敏电阻的电容大小会影响信号的弛豫时间，严重的可以导致信号畸变。低电容适合高频信号。请参考下面针对不同电路推荐的电容。

在千兆网口端，用压敏电阻的电容量比较小(10pF以内)，但是需要耐受比较大的能量，如操作过电压和雷电过电压，是否有相应的对策？

需要分级防护，建议在网络变压器的一次侧用气体放电管来传导比较大的能量，在二次侧靠近IC的信号线和回流线都采用小电容压敏（10pF以内）并来进行二次过电压防护。

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本文由咪猫转载自顺络Sunlord公众号，原文标题为:元器件技术社区 | 值得一看！压敏电阻选型攻略，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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2018-10-07 - 应用方案代理服务技术支持批量订货

Sunlord's products符合性声明(Declaration of Conformity of Sunlord's products)

型号- MPH,AWPR-2,MPL,HQ,SPH,PZ,MPM,ARCDC,WPH,EPZ,GESD,WPG,WPL,HZ,AMCW-B,WPN,SDWL-F,SDMM,SVMH,WTX,WPL SERIES,MQA,HFZ,UPZ,ACSR,WPZ,SLCP,AMQC,SDCW,SDV,SLFBF,AMP,AMCW-P,HFPZ,MQQ,TWP,ASWPA,SLDA,WPL系列,TWS,SWRB,MZA,FA,MWTC,SWRH,SDWL,SLFS,SLFT,ATWPEP,SLBL,SDNT-C,HPZ,AMWPQ,WL,TPP,BW,AMWPH,MWSA,SDCL,MWSC,ATWPEF,MWSD,SDVL,SZ,MCL-N,TC,SDFL,SDNT,SLFD,SWPA,GZ,SLFB,MCL-A,MCL,SLFL,SLFH,ATWPPQ

2022/7/13 - 顺络 - 测试报告代理服务技术支持批量订货

RJ45网络接口POE供电端口雷电防护方案

型号- SDVL,VPR14KD,VPR05KD,SMBJ,SMAJ,SMDJ,VPR10KD,SMCJ,SMDJ64CA,VPR07KD,**151,SDVL8063,SDVL5650,SDVL10080,SDVL4532,SDVL3216SD650PT,VPR,SDVL3225,VPR20KD,SDVL3216

2014.05 - 顺络 - 应用及方案代理服务技术支持批量订货

Leaded Varistor for Voltage Surge Suppression – VPR Series

型号- VPR10KD210BS,VPR14KD150BS,VPR20KD195BS,VPR10KD275BS,VPR20KD420BS,VPR20KD485BS,VPR10KD150BS,VPR05KD320BS,VPR07KD320BS,VPR05KD385BS,VPR07KD385BS,VPR07KD460BS,VPR14KD275BS,VPR14KD300BS,VPR10,VPR20KD510BS,VPR05KD460BS,VPR14KD210BS,VPR20KD130BS,VPR14,VPR10KD060BS,VPR05KD230BS,VPR07KD230BS,VPR20KD680BS,VPR07KD350BS,VPR10KD011BS,VPR05KD350BS,VPR10KD300BS,VPR10KD550BS,VPR14KD350BS,VPR05KD140BS,VPR07KD140BS,VPR10KD350BS,VPR07KD011BS,VPR10KD095BS,VPR07KD095BS,VPR10KD030BS,VPR05,VPR05KD011BS,VPR07KD030BS,VPR05KD095BS,VPR07,VPR05KD030BS,VPR10KD025BS,VPR10KD230BS,VPR14KD385BS,VPR14KD320BS,VPR07KD150BS,VPR05KD175BS,VPR05KD300BS,VPR07KD275BS,VPR14KD510BS,VPR10KD320BS,VPR10KD385BS,VPR20KD250BS,VPR07KD060BS,VPR10KD040BS,VPR14KD230BS,VPR20KD175BS,VPR05KD250BS,VPR05KD020BS,VPR07KD210BS,VPR10KD460BS,VPR14KD460BS,VPR10KD014BS,VPR10KD680BS,VPR20KD140BS,VPR05KD035BS,VPR07KD014BS,VPR10KD075BS,VPR14KD680BS,VPR07KD075BS,VPR05KD050BS,VPR05KD195BS,VPR SERIES,VPR05KD420BS,VPR20KD460BS,VPR20KD230BS,VPR14KD175BS,VPR07KD115BS,VPR07KD195BS,VPR05KD130BS,VPR07KD130BS,VPR20KD550BS,VPR14KD250BS,VPR05KD115BS,VPR07KD025BS,VPR20KD385BS,VPR10KD175BS,VPR20KD320BS,VPR05KD025BS,VPR07KD420BS,VPR10KD020BS,VPR10KD250BS,VPR05KD040BS,VPR07KD040BS,VPR07KD485BS,VPR10KD017BS,VPR14KD140BS,VPR05KD017BS,VPR10KD510BS,VPR10KD140BS,VPR07KD510BS,VPR20KD625BS,VPR07KD017BS,VPR05KD150BS,VPR07KD175BS,VPR14KD130BS,VPR10KD485BS,VPR20KD210BS,VPR14KD195BS,VPR20KD150BS,VPR10KD195BS,VPR10KD130BS,VPR20KD275BS,VPR07KD300BS,VPR14KD550BS,VPR07KD250BS,VPR10KD115BS,VPR20KD300BS,VPR14KD485BS,VPR05KD060BS,VPR14KD420BS,VPR05KD275BS,VPR10KD420BS,VPR07KD020BS,VPR05KD210BS,VPR10KD035BS,VPR05KD075BS,VPR10KD625BS,VPR07KD035BS,VPR20KD350BS,VPR20,VPR05KD014BS,VPR14KD625BS,VPR10KD050BS,VPR07KD050BS

2019/04/01 - 顺络 - 数据手册代理服务技术支持批量订货

SVMH Series High Voltage Multilayer Chip Varistor for Surge Suppression

型号- SVMH2016KA171PT181,SVMH5650KA321PT102,SVMH4532 TYPE,SVMH2016 TYPE,SVMH2016KA271PT500,SVMH3225KA191PT401,SVMH3216KA151PT301,SVMH5650KA301PT801,SVMH5650KA271PT801,SVMH4532,SVMH3216KA251PT101,SVMH5650KA231PT152,SVMH,SVMH2016KA301PT500,SVMH4532KA321PT251,SVMH5650 TYPE,SVMH3225KA151PT401,SVMH5650KA231PT202,SVMH5650KA191PT152,SVMH3216KA231PT201,SVMH3225KA301PT301,SVMH3225KA321PT151,SVMH3225 TYPE,SVMH4532KA301PT801,SVMH4532KA171PT801,SVMH4532KA301PT401,SVMH3225KA231PT401,SVMH2016KA191PT101,SVMH2016KA211PT101,SVMH5650KA231PT122,SVMH3216 TYPE,SVMH2016KA321PT500,SVMH3216KA271PT101,SVMH3216KA321PT600,SVMH5650KA191PT122,SVMH3216KA171PT301,SVMH5650KA211PT152,SVMH3216,SVMH5650KA151PT152,SVMH2016KA251PT500,SVMH SERIES,SVMH2016KA251PT700,SVMH2016KA151PT181,SVMH3225KA171PT401,SVMH3216KA301PT101,SVMH3225KA271PT201,SVMH2016KA151PT101,SVMH3216KA211PT201,SVMH5650KA171PT152,SVMH3225KA301PT401,SVMH2016KA231PT101,SVMH3225KA321PT251,SVMH5650KA251PT801,SVMH3225KA301PT201,SVMH2016,SVMH3225,SVMH3225KA251PT201,SVMH5650KA211PT122,SVMH5650KA351PT102,SVMH5650,SVMH3225KA211PT401,SVMH3216KA191PT201

2023/3/23 - 顺络 - 数据手册代理服务技术支持批量订货

Sunlord 符合性声明

型号- MPH,AWPR-2,MPL,HQ,PZ,SPH,ARCDC,MPM,GESD,EPZ,WPH,WPG,AMCW-B,HZ,WPL,WPN,SDMM,HFZ,UPZ,SLCP,AMQC,WPZ,SDCW,AMCW-P,SDV,SLFBF,HFPZ,ASWPA,SLDA,WPL系列,MZA,SLFS,SDWL,SLFT,ATWPEP,SLBL,HPZ,AMWPQ,WL,BW,SDCL,ATWPEF,MWSC,MWSD,SDVL,SZ,TC,SDFL,SDNT,SLFD,SWPA,GZ,SLFB,MCL,SLFL,SLFH,ATWPPQ

2020/03/18 - 顺络 - 测试报告代理服务技术支持批量订货

SDVL-HS Series High Surge type multilayer Chip Varistor for Surge Current Suppression

型号- SDVL2016SD090PTHS401,SDVL4532SD600PTHS601,SDVL4532-HS TYPE,SDVL4532SD300PTHS801,SDVL1608,SDVL3216-HS TYPE,SDVL5650SD650PTHS452,SDVL3216SD480PTHS151,SDVL2016SD121PTHS151,SDVL3216SD420PTHS181,SDVL1608SD101PTHS200,SDVL4532SD600PTHS202,SDVL3225SD560PTHS301,SDVL1608SD220PTHS300,SDVL2016SD180PTHS401,SDVL3225,SDVL2016,SDVL3225SD300PTHS301,SDVL5650SD380PTHS502,SDVL1608SD180PTHS101,SDVL3225SD090PTHS401,SDVL4532-HS,SDVL2016SD480PTHS301,SDVL5650SD650PTHS502,SDVL3225SD650PTHS122,SDVL5650SD650PTHS901,SDVL1608-HS,SDVL4532SD420PTHS601,SDVL3216SD600PTHS151,SDVL4532SD260PTHS142,SDVL3216SD180PTHS501,SDVL1608SD600PTHS300,SDVL2016SD121PTHS700,SDVL3225SD650PTHS801,SDVL1608SD090PTHS101,SDVL3216,SDVL5650SD850PTHS801,SDVL5650SD650PTHS152,SDVL2016SD380PTHS401,SDVL4532SD750PTHS501,SDVL4532SD180PTHS202,SDVL3225SD850PTHS,SDVL5650SD300PTHS122,SDVL2016SD650PTHS301,SDVL3225SD101PTHS102,SDVL1608-HS TYPE,SDVL5650-HS TYPE,SDVL5650SD480PTHS901,SDVL1608SD380PTHS300,SDVL5650SD480PTHS102,SDVL4532SD121PTHS801,SDVL3216SD560PTHS501,SDVL4532SD850PTHS152,SDVL5650SD850PTHS452,SDVL2016SD850PTHS201,SDVL3216SD180PTHS251,SDVL-HS,SDVL3225SD300PTHS401,SDVL2016-HS TYPE,SDVL3216SD420PTHS151,SDVL3225SD380PTHS102,SDVL2016SD151PTHS101,SDVL-HS SERIES,SDVL1608SD180PTHS121,SDVL3225SD560PTHS151,SDVL3225SD650PTHS301,SDVL5650SD650PTHS202,SDVL5650SD560PTHS901,SDVL1608SD380PTHS800,SDVL3216SD650PTHS181,SDVL3216SD101PTHS151,SDVL3216SD850PTHS401,SDVL5650SD560PTHS502,SDVL5650,SDVL3216SD480PTHS501,SDVL3225SD480PTHS301,SDVL3225SD850PTHS201,SDVL5650SD090PTHS122,SDVL3216-HS,SDVL4532SD101PTHS501,SDVL3216SD140PTHS251,SDVL3216SD650PTHS501,SDVL5650SD380PTHS122,SDVL1608SD300PTHS300,SDVL4532SD380PTHS202,SDVL2016SD300PTHS401,SDVL1608SD560PTHS300,SDVL3216SD650PTHS151,SDVL5650SD600PTHS901,SDVL1608SD850PTHS200,SDVL3225SD600PTHS301,SDVL4532SD300PTHS202,SDVL3225SD850PTHS1,SDVL5650SD300PTHS302,SDVL3225SD101PTHS201,SDVL5650SD600PTHS502,SDVL5650SD121PTHS202,SDVL5650SD180PTHS122,SDVL4532SD650PTHS302,SDVL3216SD300PTHS201,SDVL1608SD480PTHS600,SDVL3225SD300PTHS102,SDVL5650-HS,SDVL2016SD180PTHS601,SDVL5650SD330PTHS122,SDVL3225SD220PTHS401,SDVL2016-HS,SDVL3216SD650PTHS201,SDVL3225-HS,SDVL4532SD300PTHS152,SDVL4532SD560PTHS601,SDVL5650SD650PTHS302,SDVL3216SD380PTHS201,SDVL3225SD650PTHS201,SDVL3225SD180PTHS102,SDVL5650SD101PTHS801,SDVL5650SD101PTHS402,SDVL1608SD140PTHS300,SDVL3225SD650PTHS601,SDVL4532SD560PTHS202,SDVL3216SD140PTHS151,SDVL5650SD380PTHS302,SDVL3225SD600PTHS801,SDVL4532SD151PTHS501,SDVL4532SD180PTHS801,SDVL3216SD300PTHS501,SDVL3225SD420PTHS301,SDVL4532SD480PTHS202,SDVL3225SD600PTHS122,SDVL2016SD560PTHS301,SDVL3225SD560PTHS122,SDVL4532SD480PTHS601,SDVL5650SD180PTHS302,SDVL4532SD650PTHS601,SDVL5650SD480PTHS302,SDVL2016SD101PTHS201,SDVL5650SD850PTHS252,SDVL4532,SDVL3216SD101PTHS401,SDVL3216SD090PTHS501,SDVL3216SD600PTHS501,SDVL3216SD850PTHS151,SDVL4532SD101PTHS152,SDVL3225SD380PTHS301,SDVL4532SD090PTHS801,SDVL3225-HS TYPE,SDVL3216SD380PTHS501,SDVL1608SD650PTHS300,SDVL2016SD600PTHS301,SDVL5650SD650PTHS801,SDVL3216SD560PTHS151,SDVL3225SD480PTHS102,SDVL3225SD180PTHS401,SDVL5650SD151PTHS152,SDVL4532SD380PTHS801,SDVL4532SD850PTHS501,SDVL1608SD300PTHS101,SDVL2016SD300PTHS600

2023/3/23 - 顺络 - 数据手册代理服务技术支持批量订货查看更多版本

SDVL-HS Series High Surge type multilayer Chip Varistor for Surge Current Suppression

型号- SDVL4532SD600PTHS601,SDVL4532SD300PTHS801,SDVL3216SD480PTHS151,SDVL2016SD121PTHS151,SDVL1608SD101PTHS200,SDVL4532SD600PTHS202,SDVL3225SD560PTHS301,SDVL3225,SDVL3225SD850PTHS152,SDVL3225SD300PTHS301,SDVL5650SD380PTHS502,SDVL3225SD090PTHS401,SDVL4532-HS,SDVL2016SD480PTHS301,SDVL5650SD650PTHS502,SDVL3225SD650PTHS122,SDVL5650SD650PTHS901,SDVL1608-HS,SDVL3216SD600PTHS151,SDVL3216SD180PTHS501,SDVL1608SD600PTHS300,SDVL3216,SDVL5650SD850PTHS801,SDVL2016SD380PTHS401,SDVL4532SD180PTHS202,SDVL5650SD300PTHS122,SDVL2016SD650PTHS301,SDVL3225SD101PTHS102,SDVL5650SD480PTHS901,SDVL4532SD121PTHS801,SDVL3216SD560PTHS501,SDVL4532SD850PTHS152,SDVL5650SD850PTHS452,SDVL2016SD850PTHS201,SDVL3216SD180PTHS251,SDVL3225SD380PTHS102,SDVL2016SD151PTHS101,SDVL-HS SERIES,SDVL1608SD180PTHS121,SDVL5650SD380PTHS802,SDVL3225SD650PTHS301,SDVL5650SD560PTHS901,SDVL1608SD380PTHS800,SDVL3216SD101PTHS151,SDVL3216SD850PTHS401,SDVL5650SD560PTHS502,SDVL5650,SDVL3216SD480PTHS501,SDVL3225SD480PTHS301,SDVL3225SD850PTHS201,SDVL5650SD090PTHS122,SDVL3216-HS,SDVL4532SD101PTHS501,SDVL3216SD650PTHS501,SDVL5650SD380PTHS122,SDVL4532SD380PTHS202,SDVL1608SD560PTHS300,SDVL3216SD650PTHS151,SDVL5650SD600PTHS901,SDVL1608SD850PTHS200,SDVL3225SD600PTHS301,SDVL4532SD300PTHS202,SDVL5650SD300PTHS302,SDVL3225SD101PTHS201,SDVL5650SD600PTHS502,SDVL5650SD121PTHS202,SDVL5650SD180PTHS122,SDVL4532SD650PTHS302,SDVL3216SD300PTHS201,SDVL1608SD480PTHS600,SDVL3225SD300PTHS102,SDVL2016SD180PTHS601,SDVL5650-HS,SDVL2016-HS,SDVL3225-HS,SDVL4532SD560PTHS601,SDVL5650SD650PTHS302,SDVL3216SD380PTHS201,SDVL1608SD090PTHS151,SDVL3225SD180PTHS102,SDVL5650SD101PTHS801,SDVL5650SD101PTHS402,SDVL4532SD560PTHS202,SDVL5650SD380PTHS302,SDVL2016SD300PTHS501,SDVL3225SD600PTHS801,SDVL4532SD151PTHS501,SDVL4532SD180PTHS801,SDVL2016SD090PTHS701,SDVL3216SD300PTHS501,SDVL4532SD480PTHS202,SDVL3225SD600PTHS122,SDVL2016SD560PTHS301,SDVL3225SD560PTHS122,SDVL4532SD480PTHS601,SDVL5650SD180PTHS302,SDVL4532SD650PTHS601,SDVL5650SD480PTHS302,SDVL2016SD101PTHS201,SDVL4532,SDVL3216SD101PTHS401,SDVL3216SD090PTHS501,SDVL3216SD600PTHS501,SDVL3216SD850PTHS151,SDVL4532SD101PTHS152,SDVL,SDVL3225SD380PTHS301,SDVL4532SD090PTHS801,SDVL3216SD380PTHS501,SDVL1608SD650PTHS300,SDVL2016SD600PTHS301,SDVL3216SD560PTHS151,SDVL3225SD480PTHS102,SDVL3225SD180PTHS401,SDVL3225SD850PTHS401,SDVL5650SD151PTHS152,SDVL4532SD380PTHS801,SDVL4532SD850PTHS501,SDVL1608SD300PTHS101

2021/05/15 - 顺络 - 数据手册代理服务技术支持批量订货