【技术】全业电子科普TVS二极管选型技巧

时间： 2022-08-19 来源：全业电子

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众所周知在TVS管的选型过程中，许多供应商和制造商经常直接告诉需求方选择哪种类型的器件，很少普及选型技巧和在选型过程中提供理论计算。因此，许多电子工程师在选型TVS二极管器件时，老手凭经验，新手凭参考。一旦供应商、制造商或测试条件被更换，就无从下手。为此，为了解决这个小问题，全业电子科普：TVS二极管选型，让老手新手得心应手。

掌握瞬变电压抑制TVS二极管参数，选型时则事半功倍：

（1）最大工作电压Vrwm：TVS的截止电压，最大直流电压或交流峰值电压，可连续施用，不会导致TVS管变质或损坏；

（2）泄漏电流IR：待机电流在规定温度和最高工作压力下流过TVS管的最大电流；

（3）峰值脉冲电流IPP：10/1000μs电流波形峰值；

（4）钳位电压Vc：施加规定波形的峰值脉冲电流IPP时，TVS管两端测得的峰值电压；

（5）击穿电压V_BR：在规定的脉冲直流电流IT或接近雪崩的电流条件下，测量TVS管两端的电压；

（6）结电容CI：在数据接口或通信线路中的保护，应注意TVS管的结电容值。

TVS二极管选型，离不开以下六点：

（1）要确定被保护电路中的最大直流或连续工作电压，电路的额定标准电压和“高端”容限；

（2）TVS管的额定瞬态功率要大于电路中可能出现的最大瞬态浪涌功率；

（3）TVS管的截止电压要大于被保护电路的最高工作电压；

（4）TVS管的最大钳位电压要小于后级被保护电路中的损坏电压；

（5）确定好TVS管最大箝位电压后，其峰值脉冲电流要大于瞬态浪涌电流；

（6）对于数据接口的电路保护，还需注意选取具有合适电容的TVS二极管。比如：当信号频率或传输速率较高时，应选用低电容系列的TVS管。

任何理论都是在实践的基础上完成的。TVS二极管仅是基于理论价值，还需要结合经验和技术进行选择。

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本文由董慧转载自全业电子，原文标题为:TVS二极管选型指南（推荐收藏），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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全业电子（QY Semiconductor）GDT陶瓷气体放电管选型指南

目录- Surface Mount 2-Electrode Gas Discharge Tube 2-Electrode Gas Discharge Tube High Voltage 2-Electrode Gas Discharge Tube 3-Electrode Gas Discharge Tube Switching Spark Gap

型号- UN3E8-150HP,UN3E8-150HM,UN2E8-150M,UN2E6-SMD SERIES,UN2E6-75LSMD,UN2E5-350L,UN1210-400BSMD,UN2E8-230HL,UN2E5-600LL,UN2E8-2000L,UN2E8-420HSMD,UN3E5-420L,UN3E8-90HP,UN3E8-90HM,UN3E5,UN2E5-470LSMD,UN3E6,UN3E8-600H,UN2K8-400SMD,UN2E8-250MSMD,UN3E6-350M,UN3E8,UN3E5-75LSMD,UN2E6-300LSMD,UN3E8-420HMF,UN2E8-300HSMD,UN2E5-230L,UN3E5 SERIES,UN3E5-75LM,UN3E8-75HM,UN2K8-800L-,UN2K8-300L,UN3E8-75HP,UN2E8-300H,UN3E8-75H,UN2K8-600SMD,UN2E8-150H,UN2K8-450,UN2E8-300M,UN2E8-250HSMD,UN3E6-230M,UN2E5-470LL,UN2E8-150HSMD,UN2E6-150LSMD,UN2E5-350LSMD,UN1812-600CSMD,UN2E5-600LSMD,UN2E5-1600DL,UN3E5-150L,UN1812 SERIES,UN2K8-XXXSMD,UN2E8-420H,UN2E5-2500DL,UN3E6-XXXM,UN2E8-800H,UN3E6-XXXL,UN2E5-90L,UN2E8-420M,UN3E5-75L,UN2K8-800SMD-1,UN1206-400ASMD+,UN2E6-400LSMD,UN2E8-800M,UN2H8-XXXLL,UN3E8-230H,UN2E5-XXXL,UN3E6-150MM,UN2E8-75MSMD,UN2E5-3500D,UN2E5-250LL,UN2E8-150MSMD,UN2E8-800ML,UN2E5-XXXD,UN2E5-470L,UN3E8-90HMF,UN1206-470ASMD,UN3E5-300L,UN2K8-800L,UN2E8-75ML,UN2E8-2500L,UN1210-150BSMD,UN2E8-150ML,UN3E6-470M,UN2E8-90ML,UN2E8-1000L,UN2E8-470MSMD,UN3E5-470LM,UN2E8-800MSMD,UN2E8-1000LL,UN2E5-1000DL,UN3E6-XXXMM,UN2E8-800HL,UN2E8-420HL,UN2H8-4000LL,UN1812-470CSMD,UN3E8-350HMF,UN3E8-XXXHM,UN1210-470BSMD,UN2E6-350LSMD,UN2E5-1000D,UN2E8-470H,UN2E5-230LL,UN2E8-470HSMD,UN2E8-2000LL,UN2E5-1600D,UN2E8-2500LL,UN2E8-250M,UN3E5-150LM,UN3E6-XXXLM,UN3E8-75HMF,UN3E8-XXXHP,UN2E8-470HL,UN2E5-90LSMD,UN1812-200CSMD,UN3E8-250HM,UN2E8-230ML,UN3E5-XXXLSMD,UN3E8-300HMF,UN2E5-2700D,UN3E8-250HP,UN2E5-230LSMD,UN2E8-75HSMD,UN2E8-2700L,UN3E5-350LSMD,UN3E5-420LM,UN3E6-250M,UN2K8-800,UN3E5-250LSMD,UN2E5-XXXDL,UN2K8-450L,UN2K8-600L-1,UN1206-230ASMD,UN2E8-3000LL,UN2K8-600-1,UN3E5-600LM,UN2E5-600L,UN3E6-75M,UN2H8-6000L,UN2E5-300LL,UN2E5-SMD SERIES,UN2E8-230HSMD,UN2E8-250H,UN2E8-300HL,UN2H8-4500LL,UN2K8-600SMD-1,UN3E8-230HMF,UN3E6-150M,UN2E8-90M,UN3E5-150LSMD,UN3E6-420MM,UN3E8-600HM,UN2E8-90H,UN2E8-230MSMD,UN3E8-600HP,UN2E8-800HSMD,UN2E8-420MSMD,UN3E5-250L,UN1210-420BSMD,UN1812-300CSMD,UN2E5-350LL,UN2E8-3500LL,UN1206 SERIES,UN1210-230BSMD,UN2K8-350,UN2K8-300SM,UN2K8-230,UN2E8-350HL,UN3E6-250MM,UN2E6-SMD,UN3E6-420M,UN2E5-150LSMD,UN3E5-300LSMD,UN1812-400CSMD,UN2K8-500SMD,UN2E5-800LL,UN3E8-90H,UN2E6-600LSMD,UN2E8-90MSMD,UN3E5-XXXLM,UN2K8-230L,UN2E5-800L,UN3E5-300L I,UN3E8-470HM,UN2E8-600H,UN3E8-300HP,UN2K8,UN2E8-90HL,UN3E8-470HP,UN2E8-470ML,UN3E8-300HM,UN2E8-600M,UN3E6-75MM,UN3E6-470MM,UN2K8-500,UN3E6-300M,UN3E8-350HM,UN3E8-350HP,UN3E8-XXXHMF,UN3E5-470L,UN3E5-XXXL,UN1206-420ASMD,UN2K8-600L,UN1812-230CSMD,UN3E8-600HMF,UN2E8-600HSMD,UN3E6-300MM,UN2E5-300L,UN2E5-400LL,UN2E8-300ML,UN3E5-250LM,UN1210 SERIES,UN2E8-350ML,UN2E8-600ML,UN1206-150ASMD,UN1812-350CSMD,UN3E8-420HP,UN2E8-350M,UN2K8-XXXL,UN1812-90CSMD,UN2H8-5000L,UN2K8-230SM,UN3E6-350MM,UN3E8-420HM,UN2K8 SERIES,UN2E8-250HL,UN2E8-XXXLL,UN2E5-90LL,UN2K8-500L,UN3E5-600L,UN2E8-600MSMD,UN3E5-420LSMD,UN2E8-1600L,UN2K8-350SMD-2,UN2H8-5000LL,UN2K8-350SMD-1,UN2E8-230M,UN3E6-90MM,UN3E6-600MM,UN3E8-800H,UN2E8-230H,UN3E8-420H,UN2K8-600,UN2E6-90LSMD,UN2E5-75L,UN2E8-XXXM,UN2E8-XXXL,UN3E5-90L,UN2E8-90HSMD,UN2H8-5500L,UN2K8-450SMD,UN2E8-XXXH,UN2E8-470M,UN3E8 SERIES,UN3E5-230L,UN3E5-230LSMD,UN2K8-350L,UN2E5-2700DL,UN2H8-5500LL,UN2E5-75LL,UN3E8-800HMF,UN2E5-SMD,UN1206,UN2E8-XXXML,UN3E8-300H,UN2E8-HSMD,UN1210,UN2E5-2Q00D,UN3E8-150H,UN2E8-350H,UN2E5-400LSMD,UN1206-200ASMD,UN3E5-300LM,UN2K8-350SMD,UN2E5-2000DL,UN3E8-470H,UN2E5-400L,UN2E8-350HSMD,UN1206-350ASMD,UN2K8-300,UN2H8 SERIES,UN2K8-XXX,UN2E5-250L,UN2E8-3000L,UN3E8-XXXH,UN2E6-470LSMD,UN2E8-600HL,UN3E5-350LM,UN3E8-800HP,UN2E8-350MSMD,UN1812-150CSMD,UN2E8-2700LL,UN3E5-90LSMD,UN3E8-250HMF,UN2E5-3000D,UN2H8,UN3E6-230MM,UN2E5-3500DL,UN3E8-350H,UN2E5-XXXLL,UN2H8-6000LL,UN3E8-150HMF,UN2E5-150L,UN1206-400ASMD,UN1210-350BSMD,UN2E8-3500L,UN3E6-600M,UN3E8-800HM,UN2E6-230LSMD,UN3E5-470LSMD,UN2E5-200LSMD,UN2K8-800SMD,UN2E5 SERIES,UN1812,UN2E8 SERIES,UN3E5-90LM,UN2E5-150LL,UN3E5-350L J,UN1812-400CSMD+,UN2K8-350L-2,UN2K8-350-2,UN2H8-4500L,UN1210-300BSMD,UN2E8-75M,UN2E5,UN2E8-300MSMD,UN2K8-350L-1,UN2E8-XXXHL,UN3E8-250H,UN2K8-400,UN2E8-75H,UN2E8-1600LL,UN2E8,UN2E8-150HL,UN2K8-350-1,UN1206-300ASMD,UN3E5-230LM,UN2E5-3000DL,UN3E8-470HMF,UN3E6 SERIES,UN2E8-420ML,UN3E6-90M,UN2E5-300LSMD,UN2E8-75HL,UN3E5-600LSMD,UN2K8-800-1,UN2H8-4000L,UN1210-200BSMD,UN2E5-2500D,UN2H8-XXXL,UN2K8-400L,UN2E8-250ML,UN3E8-230HP,UN3E8-230HM

2022/8/31 - 全业电子 - 选型指南代理服务技术支持批量订货

SM8S36CA PcbLib & SchLib & IntLib

型号- SM8S36CA

2024-07-18 - 全业电子 - CAD模型库代理服务技术支持批量订货

【产品】峰值脉冲功率75W的ESD保护器件ESD05V88D-CN，具有出色的钳位能力，符合RoHS标准

ESD05V88D-CN是全业电子推出的一款ESD保护器件，用于保护电压敏感元件免受ESD造成的损坏或闩锁。具有出色的钳位能力、低漏电流和快速响应时间特性，可为暴露于ESD的电路板级设计提供一流的保护。由于其体积小和双向设计，非常适合用于需要音频线路保护的手机、MP3播放器和便携式应用。

2023-05-02 - 产品代理服务技术支持批量订货

【应用】全业电子推出基于GDT和TVS的DC 12V电源防护方案，适用于球机电源、枪机电源等应用

全业电子推出DC 12V电源防护方案，满足IEC61000-4-5、GB/T17626.5等浪涌测试标准，可通过1.2/50μs~8/20μs组合波浪涌测试；适用于球机电源、枪机电源等DC 12V供电电源。

2022-08-26 - 应用方案代理服务技术支持批量订货

SMF Series 5.0 To 190 V 200W Surface Mount Transient Voltage Suppressors (TVS)

型号- SMF43A,SMF18CA,SMF6.0A,SMF15A,SMF7.5A,SMF10CA,SMF14CA,SMF33CA,SMF75CA,SMF170A,SMFXXXXX,SMF5.0CA,SMF160CA,SMF90CA,SMF100CA,SMF70A,SMF130A,SMF30A,SMF54A,SMF SERIES,SMF78A,SMF6.5CA,SMF,SMF14A,SMF8.5CA,SMF26A,SMF26CA,SMF22CA,SMF45CA,SMF64CA,SMF60CA,SMF190CA,SMF9.0CA,SMF150CA,SMF19CA,SMF13A,SMF8.0A,SMF11CA,SMF15CA,SMF30CA,SMF140A,SMF120CA,SMF180A,SMF80A,SMF40A,SMF100A,SMF64A,SMF5.0A,SMF12A,SMF24A,SMF36A,SMF6.5A,SMF48A,SMF7.0CA,SMF80CA,SMF170CA,SMF51A,SMF75A,SMF11A,SMF12CA,SMF58CA,SMF19A,SMF16CA,SMF54CA,SMF150A,SMF190A,SMF140CA,SMF7.5CA,SMF90A,SMF110A,SMF10A,SMF7.0A,SMF22A,SMF28CA,SMF58A,SMFXXXCA,SMF8.5A,SMF24CA,SMF18A,SMF20CA,SMF43CA,SMF85CA,SMF110CA,SMF85A,SMF33A,SMF17CA,SMF45A,SMF17A,SMF36CA,SMF78CA,SMF13CA,SMF160A,SMF180CA,SMF51CA,SMF70CA,SMF60A,SMF120A,SMF20A,SMF6.0CA,SMF9.0A,SMF16A,SMF28A,SMF8.0CA,SMF48CA,SMF40CA,SMF130CA

September 25, 2013 - 全业电子 - 数据手册 - Revision: September 25, 2013 代理服务技术支持批量订货