【技术】常用的电路保护元件及电路保护的意义介绍

时间： 2022-10-12 来源：里阳半导体官网

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随着技术的发展，电子电路的产品日益多样化，随之而来的是复杂化电子电路很容易在过压、过流、浪涌等情况发生的时候损坏，在各类电子产品中，设置过压保护和过流保护变得越来越重要。电路保护元件也从简单的玻璃管保险丝，变得种类更多，防护性能更优越。那么电路保护如此重要，常用的电路保护元件有哪些？电路保护的意义又是什么？里阳半导体来为大家介绍。

一、常用的电路保护元件有哪些？

1、瞬态抑制二极管

瞬态抑制器TVS二极管广泛应用于半导体及敏感器件的保护，通常用于二级保护。基本都会是用于在陶瓷气体放电管之后的二级保护，也有用户直接将其用于产品的一级保护。其特点为反应速度快（为ps级），体积小，脉冲功率较大，箝位电压低等。其10/1000μs波脉冲功率从400W～30KW，脉冲峰值电流从0.52A～544A；击穿电压有从6.8V～550V的系列值，便于各种不同电压的电路使用。

2、ESD静电放电二极管

ESD静电放电二极管是一种过压、防静电保护元件，是为高速数据传输应用的I/O端口保护设计的器件。ESD静电二极管是用来避免电子设备中的敏感电路受到ESD（静电放电）的影响。可提供非常低的电容，具有优异的传输线脉冲（TLP）测试，以及IEC6100-4-2测试能力，尤其是在多采样数高达1000之后，进而改善对敏感电子元件的保护。

3、自恢复保险丝

自恢复保险丝PPTC就是一种过流电子保护元件，采用高分子有机聚合物在高压、高温、硫化反应的条件下，搀加导电粒子材料后，经过特殊的工艺加工而成。自恢复保险丝（PPTC：高分子自恢复保险丝）是一种正温度系数聚合物热敏电阻，作过流保护用，可代替电流保险丝。电路正常工作时它的阻值很小（压降很小），当电路出现过流使它温度升高时，阻值急剧增大几个数量级，使电路中的电流减小到安全值以下，从而使后面的电路得到保护，过流消失后自动恢复为低阻值。

二、电路保护的意义是什么？

1、由于如今电路板的集成度越来越高，板子的价格也跟着水涨船高，因此我们要加强保护。

2、半导体器件，IC的工作电压有越来越低的趋势，而电路保护的目的则是降低能耗损失，减少发热现象，延长使用寿命。

3、车载设备，由于使用环境的条件比一般电子产品更加恶劣，汽车行驶状况万变，汽车启动时产生很大的瞬间峰值电压等。因此，在为这些电子设备配套产品的电源适配器中，一般要使用过压保护元件。

4、通信设备，通信场所对防雷浪涌有一定的要求，在这些设备中使用过压保护、过流保护元件就变得重要起来，它们是保证用户人身安全和通信正常的关键。

5、大部分电子产品出现的故障，都是电子设备电路中出现的过压或者电路现象造成的，随着我们对电子设备质量的要求越来越高，电子电路保护也变得更加不容忽视。

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本文由玉鹤甘茗转载自里阳半导体官网，原文标题为:常用的电路保护元件有哪些？，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】硕凯电子（Socay）电路保护器件（GDT/TVS/ESD/TSS/MOV/MLV/PPTC/SPG）选型指南

目录- 公司简介 GDT陶瓷气体放电管 TVS瞬态抑制二极管 ESD静电保护元件 TSS半导体放电管 MLV贴片压敏电阻高分子ESD MOV压敏电阻 SPG强效放电管 PPTC自恢复保险丝贴片磁珠贴片电感

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SERIES,TLC-PSMD005,TRB160,TAL120,MSMD1812,TRM033,TAL250,TLC-LSMD300/33,TRM150,TAL370,TLC-LSMD300/30,TLC-NSML300/12,TLC-PSMD035/12,TRC005,TLC-LSMH400/24,TLC-NSML260/12,TLC-MSMD035/30,TLC-USMD150,TRA185,TLC-PSMD010,TRA065,TRE300,TLC-NSML450/12,TRM025,TLC-USMD035,TLC-ZSMD0050 0.050,TAL140,TLC-USMD110/16,TRA,TAL260,LSMH2920 SERIES,TRC,TRB,TRE,TRG,TLC-FSML300,TRF,TRA SERIES,ASML0402 SERIES,TLC-USMD110/12,TRM,TRA050,TLC-ASML010,TRC110,TLC-USMD005/50,TLC-ZSMD0050,USMD1210,TLC-USMD005,TRM016,LSMD2920,TLC-USMD050/16,TLC-LSMD260/33,TRM012,USMH1210 SERIES,PSMH0805,TAL270,TLC-ZSMD0011 0.011,NSMD1206 SERIES,ASML0402,TLC-ZSMD0015/24,TLC-NSML700,TRA160,TRB250,TLC-MSML900T/20,TRA040,TLC-PSMD075,TLC-ASML020,TLC-NSMD050/8,TRB135,TRM008,TLC-MSMH150/33,TRM005,TLC-MSMD075,TRM125,TLC-USMD010,TD350-1,TD350-2,TLC-ZSMD0011/24 0.,TAL160,TLC-LSML400/24,TAL280,LC-NSMD200/12,TLC-MSML800,TRA1600,TLC-ZSMD0035,TRA030,TRB120,TRC210,LSML2920 SERIES,TLC-USML190,TAL170,TLC-PSMD050,TRA025,TLC-FSMD035/9,TRF SERIES,TLC-ZSMD0025,TLC-MSMD250/8,TRA020,TRE500,TRB110,TRM100,TAL175,TLC-USMD110,PSMH0805 SERIES,TLC-PSML260,TLC-MSML500/21,TLC-LSMD050,TRA135,TLC-NSMD110,TLC-NSML200/12,TRA017,TLC-PSML380,TLC-ZSMD0015 0.015,TLC-FSML100,TLC-MSMD050/30,TLC-MSMD050/33,TRA250,TLC-USMD150/8,TRA010,TLC-NSMD012/60,TRB220,TAL500,TLC-LSMH300/24,TLC-USMD200,TLC-USMD075/8,TLC-NSML350/12,TLC-NSML400L,TLC-MSML500/16,TLC-PSML150,TLC-MSML500/12,TLC-NSMD100,TLC-USMD020/24,USML1210,TLC-NSMH020/30,TRA005,TLC-MSMD014/50,TD250-2,TLC-FSML110,TLC-NSMD025/24,TD250-1,TLC-ASML100,TLC-MSMD050/24,TRA120,TRC300,TLC-USML175,TLC-LSMD075/60,TRM200,TLC-LSMD075,TLC-NSMD025/30,TLC-USML380,TLC-USML260,TLC-FSML200,TLC-MSMD200/12,TLC-LSMD260D,TRA110,TLC-MSMH150/24,FSML0603,TLC-NSML175,TRB200,TLC-MSMD050/16,TLC-PSML125,TAL760,TLC-LSMD185,TLC-USML150,TLC-MSMD200/24,TLC-MSMD200/20,TLC-NSMD200,TLC-USMD005/60,TLC-MSMD200/16,TLC-LSMD030/50,TRA100,TLC-MSML500T,TAL410,TLC-NSML500L,TLC-NSMD035/16,TLC-LSMD250,TRF014U,TLC-PSMD010/24,TLC-NSMD035,TLC-FSML150,TLC-PSMD100,TLC-NSMD150,TRB300,TAL300,TLC-NSMD035/24,TLC-PSML075,TLC-USMH200/16,TRM SERIES,TRC500,TLC-NSMD020,MSMH1812 SERIES,TLC-NSMD025,TLC-MSML750,TLC-PSMD110,NSMH1206,TRE SERIES,TLC-PSML300/12,TRA200,TLC-LSMD125,TAL310,TLC-LSMD150,TLC-LSMD030,NSML1206 SERIES,TRF012U,TLC-MSML350/12,TLC-NSMD012,TRB400,TLC-NSMD010,TLC-NSMD016,TLC-MSMD050/60,TLC-NSML500/12,TLC-ZSMD0015/24 0.,TAL SERIES,FSMD0603,TAL200,TLC-PSML175,TLC-LSMD260,TLC-NSMD012/48,TLC-USML350,TLC-LSML700/12,TRA300,TLC-NSMD005,TLC-FSML260,TLC-MSMD110/8,TRB SERIES,TLC-NSMD035/30,TLC-USML110,TAL210,TAL450,TLC-MSMD300,TLC-LSMH200/24,TLC-LSMD450,TLC-FSMD100,TLC-

2024/6/20 - 竞沃 - 选型指南 - REV.1 代理服务技术支持批量订货

音特电子是行业领先的电路保护元器件和功率器件制造商、解决方案服务商。业务涵盖产品研发、生产制造、销售、服务等。公司主要产品和服务包括：TVS瞬态抑制二极管、ESD静电保护元件、PPTC自恢复保险丝、TSS半导体放电管、GDT气体放电管、SBR肖特基二极管、MOV压敏电阻、NTC热敏电阻、RD整流二极管、HALL霍尔传感器、MOSFET场效应管、个性化的电路保护设计、专业化的客户解决方案等。

瞬态抑制二极管静电保护元件自恢复保险丝半导体放电管气体放电管肖特基二极管压敏电阻热敏电阻整流二极管霍尔传感器场效应管

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型号- P4SMFL,SMBJ,PTOXXX,PTO88,FW5,SCT,FW7,PTT233,ESJ10,BS88,SRF0805P,PTT236,FW10,LFM,SRF1210P,SFMM,1206FA,2410FA,SRF1206P,EVH30,UPEP,PV1500F,PG2A18RXXX,1245TD,SMAJ,PTN062,ESP3803,PV1500E,6CT,SEET,EVH38,LSP,1240FH,2410BP,PV1500A,SMF,PTN102,PTD322,PTD122,HMSB75,PSMXXX,HMSD75,LFMM,PG8T10RXXX,LCT,PTN2510,0603TD,1206HV,EVCT,14CT,SET,SRC,SMDJ,10PVT,10CT,UPE4C,SRF2920P,FW75,SM8S,2410TD,PG1400,PDOXXX,PG2G12RXXX,SFM,2410LC,ESL,PTN166,SRF1812P,EVH10,EVH30M,5.0SMDJ,1206TD,EVH30S,PG8D6RXXX,5CT,EVH10S,SMCJ,LMJ,PTN205,EVH18,EVH38M,1245FA,EVH38S,EVH38SH,EVH10M,PG5D5RXXX,EVH18S,EVH15,1240FHDHC45,SRF0603P,EVH18M,ESJ5,LET,ESJ7,0603FA

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