【技术】探讨GDT、MOV和TVS三大常见的电路保护器件的异同点
电路保护主要有两种形式:过压保护和过流保护。选择适当的电路保护器件是实现高效、可靠电路保护设计的关键,涉及到电路保护器件的选型,就必须要知道各电路保护器件的作用。在选择电路保护器件的时候我们要知道保护电路不应干扰受保护电路的正常行为,此外,其还必须防止任何电压瞬态造成整个系统的重复性或非重复性的不稳定行为。硕凯电子将在本文探讨GDT、MOV和TVS三大常见的电路保护器件的异同点。
图 1
电路保护最常见的器件有三种:GDT、MOV和TVS。
在正常的工作条件下,一只GDT的并联阻抗约为1TΩ,并联电容为1pF以下。当施加在GDT两端的电势低于气体电离电压(即“辉光”电压)时,GDT的小漏电流(典型值小于1pA)和小电容几乎不发生变化。一旦GDT达到辉光电压,其并联阻抗将急剧下降,从而电流流过气体。不断增加的电流使大量气体形成等离子体,等离子体又使该器件上的电压进一步降低至15V左右。当瞬变源不再继续提供等离子电流时,等离子体就自动消失。GDT的净效果是一种消弧作用,它能在1ms内将瞬变事件期间的电压限制在大约15V以下。GDT的一个主要优点是迫使大部分能量消耗在瞬变的源阻抗中,而不是消耗在保护器件或被保护的电路中。GDT的触发电压由信号电压的上升速率(dV/dt)、GDT的电极间隔、气体类型以及气体压力共同确定。该器件可以承受高达20kA的电流。
GDT有单极和三极两种形式。三极GDT是一个看似简单的器件,能在大难临头的关键时刻保持一个差分线对的平衡:少许的不对称可以使瞬变脉冲优先耦合到平衡馈线的某一侧,因而产生一个巨大的差分信号。即使瞬变事件对称地发生在平衡馈线上,两个保护器件响应特性的微小差别也会使一个破坏性的脉冲振幅出现在系统的输入端上。三极GDT在一个具有共用气体容积的管内提供一个差分器件和两个并联器件。造成一对电极导通的任何条件都会使所有三个电极之间导通,因为气体的状态(绝缘状态、电离状态或等离子状态)决定了放电管的行为。
MOV压敏电阻
它是一种是随电压而变化的非线性电阻器。烧结的金属氧化物形成一种犹如两个背对背串接的齐纳二极管的结构。在正常工作情况下,MOV的典型漏电流为10mA量级,并联电容约为45pF。电压升高到超过MOV阈值,就会使其中一个分布式齐纳二极管产生雪崩,因而使该器件对被保护的节点进行钳位。不断增加的电流最终使器件两端的电压上升--这是大多数批量材料都有的一个限制因素。
作为一种钳位器件,MOV能大量吸引瞬变能量,而气体放电管则将瞬变能量耗散在瞬变源阻抗以及瞬变源与被保护节点之间的电阻中。在容许MOV的漏电和并联电容的应用场合(如电源、POTS和工业传感器),MOV可配合GDT,对闪电引起的瞬变进行良好的二次防护,因为MOV的触发速度要比气体等离子体避雷器快一个数量级。反复出现的过热应力的累积会使MOV过热,降低其性能。因此,务必仔细分析你打算支持的瞬变规范,确定你要求MOV吸收的总能量和最坏情况下的瞬变重复率,保守地制定器件的规格。
TVS瞬变电压抑制器
一个TVS的并联电容通常只有几十皮法,但有些新的TVS的并联电容增加了不到10pF。电压最低的TVS,其漏电流往往为100mA以上,而工作电压为12V以上的TVS,其漏电流则为5mA以下。
当前TVS的发展趋势是提高集成度,支持高密度便携设备。在芯片尺寸封装中包含多个器件,使节点间隙更好地匹配被保护的IC或接口连接器。集成的TVS与EMI滤波器可在一个封装内完成两个关键任务,并可简化通过I/O口布放总线的工作。多个TVS封装因其小巧而成为高密度组件中最常见的保护器件。
GDT/MOV/TVS的比较
压敏电阻的响应时间为ns级,比空气放电管快,比TVS管稍慢一些,一般情况下用于电子电路的过电压保护其响应速度可以满足要求。压敏电阻的结电容一般在几百到几千Pf的数量级范围,很多情况下不宜直接应用在高频信号线路的保护中,应用在交流电路的保护中时,因为其结电容较大会增加漏电流,在设计防护电路时需要充分考虑。压敏电阻的通流容量较大,但比气体放电管小。具体可分为以下四点:
在反应时间上,压敏电阻介于TVS管和气体放电管之间,TVS管为皮秒级,压敏电阻略慢,为纳秒级;而气体放电管最慢,通常为几十个纳秒甚至更多。
在通流容量上,压敏电同样介于TVS管和气体放电管之间,TVS管通常只有几百A;而压敏电阻按不同规格,可通过数KA到数十KA的单次8/20μS浪涌电流;而对于气体放电管来说通常10KA级别8/20μS浪涌电流可导通数百次。
从原理上看:
TVS管基于二极管雪崩效应;压敏电阻器基于氧化锌晶粒间的势垒作用;而气体放电管则是基于气体击穿放电。
在电压范围方面:
TVS管通常为5.5V到550V,压敏电阻的范围较宽,可从10V到9000V,而气体放电管可从75V到3500V。
这三种器件各有各的绝技,如何选择,就看想要防止的损害是什么了,而且在具体的防护方案设计时,并没有规定说只能选择一种防护器件。FAE工程师完全可以根据实际的防护应用,将这三大主力电路保护器件组合使用,相信其迭加的防护能力一定优于单独使用的防护等级。硕凯小编来举个例子:在电源系统的防雷保护电路中,采用压敏电阻与陶瓷气体放电管配合使用的方案很多,特别是在铁路、通信系统已被广泛使用。压敏电阻与陶瓷气体放电管配合使用的保护电路尽管有许多优点,例如:降低残压、控制压敏电阻的劣化等,但在使用过程中如果电路设计或元件选型存在问题,可能会导致保护电路出现燃烧、爆炸等故障,影响系统的正常运行,因此在选型环节,工程师一定要进行多次模拟测试,从而实现防护方案的可靠性和实用性。
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SERIES,SC2E6-600LSMD,SC1812-420CSMD,P6SMB12A,TH8D20CA,SCF012-1206R,32D911K,P4SMA13A,SC2E6-420LSMD,P6KE180CA,P6SMB10A,SCGB2012S301HPF,SM6S15A,P4SMA47CA,SCML2012H2R2M05BP,P6SMB11A,KA-190,25D SERIES,P6SMB100CA,5.0SMDJ78CA,SC250-650,SCWL201610G-1R0ML,15KPA18CA,20D,P4KE400A,SCML2012H1R0MBE,SM6S18A,RCF160-1812,PXXXXTB SERIES,1.5KE10CA,SCF035-0805R,SCHB1608W241EPF,SC1206-90ASMD,34S850K/40,SMF60A,P4SMA15A,SCGB2012S102FPF,15KPA30A,SM6S17A,P6KE27CA,30KPA84A,SCB-141N,PXXXXEC,5KP33A,PXXXXEA,P6SMB82CA,PXXXXEB,15KPA180CA,SC2E8-150H,1.5SMC500CA,SC2E8-150M,5KP11CA,30KPA36CA,P4KE6.8CA,20KPA52CA,P6SMB47CA,1.5SMC250CA,SCHB1608-W SERIES,SCPB1005S100NPF,TH8S15A,SC3E5-75LSMD,P6SMB220CA,3KP140A,SC2E5-470L,SMDJ200CA,SMF70A,SMDJ190CA,15KPA24A,30KPA90A,1.5KE380CA,SC250-145T,3KP64A,P4KE20A,SMAJ48CA,SMBJ43CA,TPSMAJ SERIES,SCWL201610G-R47ML,53D SERIES,34S140K/40,SMCJ7.5A,SMAJ400A,SC1812-400CSMD+,30KPA71CA,SMF19CA,SA90A,30KPA102A,SMBJ18A,SCF035-1210R,1.5SMC75CA,25D,SMAJ300CA,P6KE220CA,SA40CA,SCF020-60-1812R,SCB-501M,15KPA22A,SC1812-350CSMD,TH8S16A,KA-170,SMBJ19A,SCGB3216S202ETF,20KPA96CA,SM6S20A,3KP9.0CA,S61089,SM6S,P6KE100CA,SMBJ16A,20KPA240CA,SMBJ30CA,P6SMB SERIES,SCWL252010H SERIES,5KP28A,SCGB1608H121EPF,30KPA108A,SMF110A,15KPA28A,SMAJ8.5CA,SC1210-420BSMD,SMAJ180A,P4KE100A,SC135-650,SCC-471M,SMBJ17A,SMF85CA,SMBJ120CA,5.0SMDJ220A,SM5S,SM8E,SM8S16CA,SM6S22A,20KPA120CA,5KP8.0A,1.5SMC10A,SC2E5-3500D,SC3E6-230M,3KP75CA,SMBJ14A,SM8S,P6SMB18A,SMDJ16CA,SCGB1608S221FPF,SMBJ130A,1.5SMC130CA,5.0SMDJ350A,SCPB1608S601LPF,15KPA26A,15KPA48CA,SMDJ440CA,34S350K/40,5KP120CA,SCGB1005S200FPF,SA100A,SMBJ15A,SCF125-2920R,SMAJ170CA,KA-133,SCWL252010G-R47ML,15KPA180A,30KPA260CA,SMBJ12A,SMAJ6.0A,P6KE62CA,SC3E8-150HP,SC250-1000S,TPSMEJ,SC3E8-150HM,1.5SMC91A,SA7.5CA,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,15KPA22CA,5.0SMDJ48CA,SMBJ13A,SCBE-471M,SC2E8-150MSMD,TPSMDJ,P6KE75A,P4SMA220A,KB-380,34S440K/65D,SMCJ150A,20KPA172A,SC1210-350BSMD,SC1812-90CSMD,TPSMCJ,SA6.0A,SCF200-1812R,5KP8.5A,SMAJ78A,KA-100,SC3E8-800HM,5KP120A,SC3E8-800HP,SMBJ10A,SMBJ11A,P4KE27A,5.0SMDJ400A,SMAJ22CA,SC3E5-350LM,TPSMBJ,SMCJ6.5CA,8.0SMDJ22CA,SMAJ75A,SMCJ36A,SA190CA,SCPB1005S121MPF,SM4KBF,5.0SMDJ75A,P4SMA9.1A,TH8S SERIES,SMF54CA,SC30-600,P4SMA91A,TPSMAJ,1.5KE100A,SC2E8-250MSMD,P6SMB170A,SMCJ45CA,3KP60A,30KPA84CA,SC3E5-470LM,P6KE75CA,TH8D28CA,P4KE24A,SCF030-1812R,SCPB3216S121WTF,SC16-600,SCA SERIES,SCGB1005S600FPF,SC3E5-150L,SMAJ6.5A,SMBJ440A,SMCJ58CA,SMDJ7.5CA,5.0SMDJ17CA,1.5KE18CA,5KP60CA,5.0SMDJ70CA,SMCJ33A,P4SMA350A,RCF260-1812R,SCGB3216S700KTF,SCF0805,P4KE22A,P4SMA6.8CA,10D SERIES,P4KE6.8A,SA6.5A,5.0SMDJ33CA,SA36CA,SMBJ,SMDJ20CA,SMF6.0A,P4SMA15CA,3KP6.0CA,SMDJ160A,3KP26CA,SCWL201610H-R47ML,SMAJ60A,SMAJ,SC2E8-75ML,5.0SMDJ70A,5.0SMDJ SERIES,SMF22CA,SMDJ48A,SMCJ7.0CA,SMCJ20A,P4KE36CA,SCF260-13-1812,P6KE200A,SMDJ,20KPA36CA,SC1206-470ASMD,SMBJ85A,1.5KE380A,P4KE120CA,P4SMA400CA,SCPB1608S600QPF,SC2K8-400SMD,SMF180A,SM8E43A,SMCJ,SM8S22CA,SMDJ33CA,SMDJ45A,1.5SMC8.2CA,SCC-401M,SMCJ13CA,SCB-201M,TH8S16CA,PXXXXSB SERIES,SMDJ64CA,3KP13CA,5KP180CA,SCWL252010G SERIES,1.5KE62A,20KPA26A,SCF020-0805R,20KPA104CA,PXXXXLA SERIES,SMCJ26CA,SA75A,TH8D,20KPA24A,TH8S,SMDJ43A,1.5SMC91CA,SCHB1608W601EPF,1.5SMC180CA,20KPA300CA,SCPB-S SERIES,1.5KE250A,SCF012-0603R,SA78A,53D361K,SMAJ85CA,P4SMA200A,SA190A,K1-076,1.5KE8.2A,2
SOCAY硕凯压敏电阻20D561K在路灯电源输出端的浪涌防护,通流量可达6.5KA
硕凯电子推荐的20D561K,该器件采用的是插件封装,方便焊接,浪涌承受能力较强,通流量可达6.5KA,且留有一定的余量,低漏电流。对于AC220V电源输出口有较好的浪涌防护。
应用方案 发布时间 : 2024-11-07
硕凯电子(Socay)热敏电阻(NTC/CSN)和压敏电阻(CSA)选型指南
目录- Company Profile Negative Temperature Coefficient Thermistor Ceramic Surge Absorber Ceramic Surface NTC Thermistor
型号- 07D241KJT,MF72T-8D-13,MF72T-8D-11,05D241KJT,MF72-SCN-10D-15,MF72-SCN-12D-20,MF72-SCN-10D-13,MF72-SCN-0.7D-20,MF72-SCN-XXD-20,MF72-SCN-10D-11,MF72-SCN-8D-13,MF72-SCN-5D-5,MF72-SCN-8D-11,MF72-SCN-8D-15,MF72-SCN-1D-20,10D561KJT4.0,MF72T-33D-11,MF72T-2R5D-13,10D511KJT4.0,MF72T-2R5D-11,10D471KJT,MF72T-15D-13,MF72-SCN-20D-9,MF72-SCN-20D-5,MF72-SCN-12D-11,10D271KLT6.0,MF72-SCN-12D-15,MF72-SCN-25D-11,MF72-SCN-12D-13,MF72-SCN-10D-20,MF72-SCN-100D-11,10D241KJT,MF72-SCN-8D-20,MF72T-3D-13,10D271KJT4.0,MF72T-47D-13,MF72-SCN-30D-11,MF72-SCN-4D-9,MF72T-12D-13,07DXXXKJT,MF72-SCN-3D-11,MF72-SCN-XXD-7,10D511KJT,MF72-SCN-3D-13,10D561KLT,MF72-SCN-XXD-5,07D471KJT,10D431KJT,MF72-SCN-5D-20,MF72-SCN-30D-13,MF72-SCN-35D-9,MF72-SCN-120D-13,MF72-SCN-30D-15,MF72-SCN-120D-11,MF72-SCN120D-15,MF72-SCN-3D-15,07D561KJT,MF72T-1R3D-13,MF72T-3D-11,MF72-SCN-XXD-9,MF72-SCN-7D-15,05D271KJT,MF72-SCN-12D-7,MF72-SCN-7D-13,MF72-SCN-47D-15,MF72-SCN-12D-9,MF72-SCN-200D-5,MF72-SCN-60D-9,MF72-SCN-47D-13,07D511KJT,MF72-SCN-60D-5,MF72-SCN-200D-9,MF72T-10D-11,MF72T-120D-11,MF72-SCN-200D-7,MF72T-10D-13,MF72-SCN-15D-13,10D331KLT6.0,MF72-SCN-3D-20,10D241KLT,MF72-SCN-5D-11,MF72-SCN-5D-13,MF72-SCN-5D-15,MF72T-5D-11,MF72-SCN-15D-15,10D511KLT6.0,MF72T-5D-13,10D331KLT,10D331KJT4.0,MF72-SCN-2D-20,05D331KJT,07D331KJT,MF72-SCN-6D-9,MF72-SCN-60D-11,10D561KJT,MF72T-16D-13,MF72-SCN-80D-9,MF72-SCN-100D-9,MF72-SCN-33D-9,MF72-SCN-100D-5,MF72T-16D-11,MF72-SCN-10D-9,MF72-SCN-1.3D-20,10D511KLT,MF72-SCN-10D-7,MF72-SCN-10D-5,MF72-SCN-33D-7,MF72T-7D-13,MF72-SCN-16D-5,10D431KLT,MF72T-50D-11,05D431KJT,07D431KJT,10D471KLT6.0,10D561KLT6.0,MF72-SCN-1.5D-15,MF72-SCN-1.5D-13,10D271KLT,MF72-SCN-3D-9,MF72-SCN-XXD-15,MF72-SCN-XXD-13,MF72-SCN-XXD-11,MF72T-100D-11,MF72T-30D-11,MF72T-60D-11,10DXXXKJT,MF72T-30D-13,MF72-SCN-30D-9,MF72-SCN-120D-9,MF72-SCN-1.3D-15,MF72-SCN-300D-9,MF72-SCN-1.3D-13,10D431KLT6.0,MF72T-1R5D-13,MF72-SCN-4D-13,MF72T-80D-11,MF72-SCN-4D-11,MF72-SCN-16D-20,MF72-SCN-4D-15,MF72T-4D-13,05DXXXKJT,MF72-SCN-2.5D-9,MF72-SCN-8D-9,10D331KJT,MF72T-4D-11,MF72-SCN-400D-9,05D471KJT,MF72-SCN-25D-9,MF72-SCN-50D-9,05D561KJT,MF72T-20D-13,10D471KLT,MF72-SCN-6D-20,MF72T-20D-11,10D471KJT4.0,MF72-SCN-22D-11,MF72-SCN-20D-15,MF72-SCN-16D-9,MF72-SCN-20D-13,MF72-SCN-16D-7,MF72-SCN-33D-11,10D271KJT,MF72-SCN-16D-11,MF72-SCN-22D-9,MF72-SCN-33D-15,MF72-SCN-22D-7,MF72-SCN-16D-15,MF72T-6D-11,05D511KJT,MF72-SCN-16D-13,07D271KJT,MF72-SCN-5D-9,10D241KLT6.0,MF72-SCN-5D-7,MF72T-6D-13,10DXXXKLT,MF72-SCN-8D-7,MF72-SCN-8D-5,MF72-SCN-6D-15,MF72-SCN-6D-13,MF72-SCN-6D-11,MF72-SCN-2.5D-13,MF72-SCN-80D-11,MF72-SCN-20D-11,MF72T-22D-11,MF72T,MF72-SCN-50D-11,MF72-SCN-2.5D-11
硕凯电子(Socay)MOV压敏电阻选型指南
目录- Radial Lead Metal Oxide Varistor
型号- 14D181K,40D271K,25D301K,10D681KJ,10D221KJ,07D121KJ,14D821K,20D470K,20D361K,14D182KJ,10D112KJ,40D911K,14D180K,07D220K,32D361K,05D621K,53D122K,07D680K,14D820K,25D751K,10D560KJ,14D301KJ,10D331KJ,20D181KJ,07D241KJ,07D241K,32D241K,32D471K,40D152K,05D511K,07D471K,20D201KJ,10D220KJ,34S621K,05D470KJ,20D431KJ,20D121K,14D390KJ,53D112K,05D361KJ,07D680KJ,14D181KJ,07D471KJ,07D121K,14D182K,53D221K,53D681K,20D471K,20D241K,10D561KJ,20D182KJ,32D122K,10D330KJ,05D820K,07D221KJ,34S821K,14D270KJ,25D511K,05D241KJ,10D511K,40D182K,05D471KJ,05D180K,34S182K,20D151K,14D391KJ,20D781KJ,07D681KJ,07D361K,20D911K,05D121KJ,07D470K,10D621K,07D330KJ,07D561KJ,20D271K,10D121KJ,14D511KJ,32D221K,32D112K,07D220KJ,14D621KJ,53D361K,32D681K,10D680KJ,14D271KJ,10D241KJ,10D751K,32D331K,10D911KJ,53D241K,14D781KJ,32D561K,25D621K,40D391K,53D471K,07D560KJ,05D680KJ,32D102K,20D331KJ,10D470KJ,40D122K,20D431K,10D820KJ,20D681KJ,20D201K,10D301K,20D221KJ,20D781K,25D681K,10D361KJ,05D201K,25D122K,05D431K,34S301K,07D151KJ,07D301K,20D561KJ,53D301K,05D390KJ,20D330KJ,40D112K,40D221K,40D681K,25D561K,25D331K,34S201K,34S431K,40D,07D431K,10D821KJ,10D471KJ,07D201K,20D220KJ,14D471K,05D511KJ,20D911KJ,20D151KJ,14D241K,40D331K,40D561K,32D391K,25D221K,53D,25D112K,05D621KJ,05D270KJ,14D911KJ,53D751K,14D151KJ,14D470K,20D560KJ,07D271KJ,14D361K,05D391KJ,07D470KJ,32D271K,14D270K,14D391K,05D751K,53D331K,53D561K,20D112K,20D220K,20D680K,14D470KJ,53D102K,05D151KJ,32D911K,14D390K,25D102K,07D781K,40D361K,05D271KJ,34S511K,10D431K,07D361KJ,10D201K,10D781K,20D122K,07D820KJ,20D241KJ,20D471KJ,07D330K,05D301K,07D681K,07D560K,20D680KJ,32D,20D,40D241K,40D471K,32D152K,53D781K,20D102K,07D221K,05D820KJ,10D331K,10D330K,10D560K,10D681K,10D101K,14D471KJ,20D331K,20D561K,53D431K,53D201K,10D151KJ,14D271K,14D361KJ,07D561K,25D431K,25D201K,20D101K,07D101K,07D331K,34S751K,10D561K,10D102K,14D911K,20D221K,20D560K,20D681K,20D330K,07D821KJ,25D781K,14D151K,20D470KJ,10D,05D121K,20D621K,34S122K,05D201KJ,20D361KJ,05D431KJ,34S,20D820KJ,14D102K,32D511K,40D301K,25D271K,10D511KJ,14D121KJ,14D821KJ,05D241K,20D511K,14D241KJ,05D471K,10D271KJ,10D220K,10D221K,05D180KJ,10D112K,10D680K,14D101K,14D331K,14D561K,32D621K,25D391K,07D181KJ,07D301KJ,20D821KJ,34S241K,34S471K,05D361K,07D621K,10D241K,05D470K,10D471K,14D680KJ,14D431K,14D201K,25D,25D152K,40D751K,14D820KJ,07D751KJ,10D270KJ,10D121K,20D121KJ,10D621KJ,10D391KJ,25D911K,14D781K,25D361K,14D,40D102K,14D330KJ,05D301KJ,14D560KJ,34S102K,05D101K,05D561K,05D331K,07D511KJ,07D391KJ,14D221KJ,14D681KJ,14D122K,14D112KJ,10D751KJ,40D781K,05D221K,05D330K,05D560K,05D681K,34S781K,20D301K,07D511K,10D361K,10D390KJ,10D470K,20D122KJ,53D511K,07D270KJ,14D121K,10D182KJ,14D331KJ,40D201K,40D431K,14D561KJ,34S112K,34S681K,05D220K,07D390KJ,34S221K,05D680K,14D220KJ,53D621K,14D112K,14D221K,14D560K,14D681K,10D301KJ,07D621KJ,14D122KJ,05D,14D330K,25D471K,25D241K,20D751K,07D751K,34S561K,20D271KJ,34S331K,32D821K,05D181KJ,14D680K,10D181KJ,14D220K,14D102KJ,53D391K,10D911K,07D271K,07D781KJ,10D271K,05D391K,05D270K,05D390K,20D112KJ,34S271K,05D220KJ,07D,20D511KJ,07D151K,34S911K,53D271K,32D781K,10D151K,20D270KJ,05D681KJ,20D621KJ,53D911K,20D101KJ,20D182K,32D201K,32D431K,10D180KJ,14D751K,20D391KJ,05D560KJ,05D751KJ,14D101KJ,07D390K,10D201KJ,14D431KJ,20D391K,14D621K,20D270K,05D221KJ,07D101KJ,10D390K,05D561KJ,05D330KJ,53D152K,07D270K,07D391K,10D270K,07D331KJ,05D181K,20D390K,34S391K,14D511K,20D102KJ,10D391K,40D821K,20D390KJ,10D781KJ,10D182K,07D180KJ,07D821K,53D821K,14D180KJ,32D301K,25D182K,40D511K,53D182K,05D331KJ,34S361K,10D102KJ,40D621K,20D821K,07D180K,10D180K,10D820K,05D151K,34S152K,10D431KJ,14D201KJ,20D181K,25D821K,32D751K,14D751KJ,07D431KJ,20D301KJ,07D201KJ,20D751KJ,20D820K,07D181K,05D101KJ,10D181K,10D821K,07D820K,05D271K,10D101KJ,14D301K,20D180K,20D180KJ
基于硕凯TVS SMBJ24CA的车载LED电源静电整改案例分析
本文介绍车载LED电源静电整改分析。对于弱电产品有金属外壳的产品最好是把外壳接到PCB的工作地,或者PCB有大地的外壳接到PCB的大地。对于主IC不能承受很大的工作电压时选用TVS尽量选用钳位电压低的,比如SMBJ24CA。
设计经验 发布时间 : 2024-10-25
硕凯电子压敏电阻选型表
提供硕凯直径5D、7D、10D、14D、20D、25D、32D以及SM4032系列MOV压敏电阻产品选型,VAC电压从11V~1000V,浪涌电流高达20000A
产品型号
|
品类
|
系列(Series)
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VAC(V)
|
VDC(V)
|
V1mA(V)
|
IP(A)
|
VC(V)
|
I Standard(1 Time)(A)
|
I Standard(2 Times)(A)
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Maximum Energy(10/1000μs)Standard(J)
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Rated Power(W)
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Typical Capacitance@1KHz(pF)
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05D180K
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压敏电阻
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05D Series
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11V
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14V
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18V(15V~21.6V)
|
1A
|
40V
|
100A
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50A
|
0.4J
|
0.01W
|
1400pF
|
选型表 - 硕凯电子 立即选型
赛尔特(SETsafe丨SETfuse)标准型压敏电阻 & MOV芯片选型指南
描述- 赛尔特(SETsafe | SETfuse) 公司的金属氧化物压敏电阻 Metal Oxide Varistor (MOV)具有最大峰值电流:(0.75~70)kA;最大连续工作电压:(14~750)VAC;安规认证UL、cUL、TUV、CQC;符合RoHS、REACH要求。
型号- SFV10D911KT,YMJ34S361K,SFV10S330K,SFV20D181KT,SFV10S221K,YMJ25S911K,SFV20D 系列,SFV10D T,SFV7D391KM,SFV10D M,SFV20S系列,SFV25D151K,SFV14D561K,SFV10D101KT,SFV14D101K,SFV10D561KM,SFV20D621K,SFV10D101KM,SFV20D181KM,SFV10D561KT,SFV10S681K,SFV25S561,SFV25S560,SFV10S331K,SFV34S241K,SFV7D T,SFV53D621K,SFV25D M 系列,SFV7D391KT,SFV10D系列,SFV7D621KT,SFV10D112KT,SFV25S151K,SFV14D102K,SFV20D511K,SFV7D621KM,SFV10D112KM,SFV20S621K,SFV10D241K,SFV7D621K,SFV10D681KT,SFV7D151KT,SFV7D M,SFV10D681KM,SFV25D391K,SFV25S301,SFV14D301KT,SFV14D301KM,SFV10S220K,SFVXDXXX K,SFV15S 系列,SFV7D151KM,SFV14D560K,SFV25D390K,SFV20D751K,SFV10D911KM,SFV10S680K,YMJ25S271K,SFV10S241K,SFV20D431KT,SFV34S331K,YMJ20S301K,SFV14D271KM,SFV20D431KM,SFV14D271KT,SFV53D751K,YMJ25S361K,SFV14D121K,SFV20D751KM,SFV25S241K,SFV25S122,SFV20S751K,SFV25S361,SFV20D751KT,SFV25S121,YMJ34S122K,SFV20D系列,SFV34S681K,SFV34S112K,SFV34S221K,YMJ20S系列,SFV7D511K,YMJ25S471K,SFV14D122K,SFV25S112,SFV25D T系列,YMJ34S121K,SFV20D102KM,SFV34S680K,SFV10D221KT,SFV25D181KT,SFV20D102KT,SFV53D511K,SFV10D221KM,SFV14D151KT,SFV14D470K,SFV14D361K,SFV25S101,SFV10D151K,SFV10D330KT,SFV7D271KM,SFV14D151KM,SFV25S102,SFV25D181KM,SFV20S511K,SFV7D271KT,YMJ34S471K,SFV7D751K,SFV20D M 系列,SFV14D471K,SFV25S331,SFV25S330,SFV34S391K,SFV7D271K,SFV25D511KT,SFV25S330K,SFV25S681K,SFV10D391K,SFV25S112K,SFV25S221K,SFV14D201KM,YMJ34S102K,SFV34S系列,SFV14D201KT,SFV10D301KT,SFV25D511KM,SFV15S431K,SFV25S220K,SFV25S680K,SFV10D390K,SFV10S751K,SFV20S201K,SFV10D301KM,SFV53D911K,YMJ20S391K,YMJ34S101K,SFV20D181K,SFV7D201KM,SFV7D201KT,YMJ34S561K,SFV53D271K,SFV15S101K,SFV15S561K,SFV20D821K,SFV14D301K,SFV14D 系列,SFV14D M,SFV14D M系列,SFV14D T,SFV7D270K,SFV25S331K,SFV20D820K,SFV20D390KT,SFV10S系列,SFV10D201KT,SFV10S201K,SFV7D821K,YMJ34S301K,SFV53D820K,SFV10D201KM,SFV14D621KT,SFV15S301K,SFV20S331K,SFV25S201K,SFV14D391KM,SFV25D821KM,SFV25S511,SFV14D621KM,SFV20S221K,SFV20S681K,SFV20S112K,SFV20S330K,SFV25S751,SFV14D391KT,SFV34S151K,SFV25S 系列,YMJ25S820K,SFV20D270KT,SFV25D821KT,SFV7D301KM,SFV7D301KT,YMJ25S181K,SFV53D821K,YMJ25S821K,SFV7D820K,YMJ34S431K,SFV7D系列,SFV20D511KT,SFV53D181K,SFV14D431K,SFV7D181K,SFV20D511KM,SFV7D221KM,SFV7D221KT,SFV20D471KT,SFV25D820KT,SFV20D471KM,YMJ25S301K,SFV10D T 系列,SFV25D301K,SFV15S470K,SFV20D241K,SFV15S361K,SFV7D561KT,SFV53D241K,SFV7D561KM,SFV7D101KM,SFV10D511KT,SFV7D330KT,SFV20S241K,SFV10D511KM,SFV15S471K,SFV7D101KT,SFV10D621K,SFV25D471KT,SFV7D471K,SFV25D471KM,SFV20S220K,SFV20S680K,SFV20D T系列,YMJ20S,SFV7D121K,SFV14D221KM,SFV10D511K,YMJ20S241K,SFV14D221KT,SFV7D681KT,SFV15S系列,SFV25S751K,SFV25D431K,SFV7D681KM,YMJ20S151K,SFV20D151K,SFV25D系列,SFV25S,SFV14D820KM,SFV14D361KM,SFV14D112KT,SFV25S621K,SFV14D112KM,SFV10D390KT,SFV14D361KT,SFV7D470K,SFV7D361K,SFV10D751K,SFV14D820KT,SFV14D470KT,SFV53D151K,SFV25S911,SFV14D101KT,SFV25D,SFV14D101KM,SFV25S511K,SFV15S560K,SFV25D680KT,SFV20D391K,YMJ25S,SFV25D680KM,SFV10D270KT,SFV15S121K,SFV7D 系列,SFV20D821KM,SFV20D390K,SFV20D821KT,SFV25S系列,SFV25D M系列,SFV20S391K,SFV7D470KT,SFV10D241KT,SFV10D 系列,SFV10D241KM,SFV25D560KT,SFV53D 系列,SFV7D361KM,SFV7D361KT,SFV7D820KT,SFV25D560KM,SFV20D331KT,SFV20D201K,SFV7D M 系列,SFV20D331KM,SFV7D820KM,SFV34S431K,SFV20D,SFV20S390K,SFV53D201K,SFV7D M系列,SFV7D301K,SFV25D122K,SFV20S,SFV25D 系列,SFV14D T系列,SFV10D201K,SFV10D121KM,SFV7D431K,SFV25S271,SFV20S151K,SFV25S270,SFV25D122KM,SFV10D121KT,SFV25D122KT,YMJ25S系列,YMJ25S121K,SFV14D151K,SFV25D121K,SFV25D751KM,SFV25D331KT,SFV25D331KM,SFV25D751KT,SFV15S820K,SFV15S181K,SFV25S821K,SFV10S151K,SFV10D820KM,SFV34S102K,YMJ20S201K,SFV10D820KT,SFV10D T系列,SFV25D471K,YMJ25S122K,SFV14D T 系列,SFV25S181K,SFV7D121KM,SFV15S821K,SFV20D T,SFV20D331K,SFV7D121KT,SFV20D M,SFV25S820K,SFV20D122KM,SFV20D680K,SFV20D122KT,SFV20D220KT,YMJ34S151K,SFV20D680KT,SFV53D331K,SFV14D391K,SFV25D102KT,SFV25D102KM,SFV20D221K,SFV20D112K,SFV10S390K,SFV20D681K,SFV14D911KT,SFV20D330K,SFV14D241KT,SFV10D331K,SFV53D681K,SFV14D241KM,SFV53D112K,SFV53D221K,SFV10D M 系列,YMJ25S431K,SFV14D561KM,SFV14D561KT,SFV25D102K,SFV14D330KT,SFV20D220K,SFV10S391K,SFV25S911K,SFV10D112K,SFV10D681K,YMJ34S391K,SFV7D241KM,SFV10D330K,SFV10D221K,SFV25D431KT,SFV7D560K,YMJ20S331K,SFV10D470KT,SFV34S301K,SFV7D241KT,SFV25D431KM,SFV25S271K,YMJ25S561K,SFV25D561K,YMJ25S101K,SFV15S270K,SFV20D560KT,SFV25D101K,SFV7D101K,SFV7D561K,SFV10D361KM,SFV14D681KM,SFV10D680K,SFV14D911KM,YMJ20S221K,YMJ20S681K,YMJ20S112K,SFV10D220K,SFV14D681KT,SFV25D560K,SFV14D390K,SFV25S270K,SFV14D121KT,YMJ25S102K,SFV10D361KT,SFV14D121KM,SFV15S271K,SFV14D751KT,SFV10S560K,SFV7D511KT,SFV10D122K,SFV34S121K,SFV14D751KM,SFV7D511KM,YMJ20S511K,SFV10D331KT,SFV15S511K,SFV14D331K,SFV25S201,SFV25D911K,SFV10D331KM,SFV25S680,YMJ25S151K,SFV25S681,SFV7D270KT,SFV34S471K,SFV10S561K,SFV10D121K,SFV10S101K,SFV25D271K,SFV25S431,SFV15S621K,SFV34S361K,SFV25D201KT,SFV34S470K,SFV10D471K,SFV25D201KM,SFV14D680K,SFV14D270KT,SFV10D102KT,SFV14D220K,SFV25D270K,SFV10D470K,SFV10D102KM,SFV10D560KT,SFV15S751K,YMJ25S391K,SFV10D361K,SFV14D681K,YMJ20S621K,SFV14D221K,SFV20D301KT,SFV14D330K,SFV7D390KT,SFV14D112K,SFV20D301KM,SFV10D122KM,SFV10S471K,SFV20D M系列,SFV34S101K,SFV34S561K,S
SC2E8 Series High Voltage 2-Electrode Gas Discharge Tube(GDT)
型号- SC2E8,SC2E8-6000LL,SC2E8-3000LL,SC2E8-5500L,SC2E8-3600L,SC2E8-3000L,SC2E8 SERIES,SC2E8-1600L,SC2E8-2500LL,SC2E8-5000LL,SC2E8-5500LL,SC2E8-2000LL,SC2E8-XXXLL,SC2E8-1600LL,SC2E8-6000L,SC2E8-4500L,SC2E8-2000L,SC2E8-2700L,SC2E8-1000LL,SC2E8-1000L,SC2E8-3500L,SC2E8-4500LL,SC2E8-5000L,SC2E8-1400L,SC2E8-1400LL,SC2E8-3600LL,SC2E8-XXXL,SC2E8-2700LL,SC2E8-3500LL,SC2E8-4000LL,SC2E8-2500L,SC2E8-4000L
DC24V电源端口浪涌保护
DC24V电源端口浪涌保护DC24V电源是一种为设备提供稳定、可靠的直流电压输出的电源,其广泛应用于工业自动化控制系统。此方案设计为多级保护的方式,初级采用通流能力较强的陶瓷气体放电管和压敏电阻组合来承受泻放大的浪涌电流,中间使用电感做退耦,次级选用响应电压精准、稳定且快速的TVS管做保护,能有效抑制各类浪涌过电压,使后端的DC芯片及电路得到全面的保护。
应用方案 发布时间 : 2024-01-24
【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。
应用方案 发布时间 : 2022-08-26
SC2E8 Series 2-Electrode Gas Discharge Tube (GDT)
型号- SC2E8-300ML,SC2E8-800M,SC2E8-XXXML,SC2E8-350HSMD,SC2E8-150ML,SC2E8-420MSMD,SC2E8-420H,SC2E8-800H,SC2E8 SERIES,SC2E8-420M,SC2E8-XXXHL,SC2E8-250H,SC2E8-75MSMD,SC2E8-230H,SC2E8-470MSMD,SC2E8-800MSMD,SC2E8-420HL,SC2E8-230HL,SC2E8-250M,SC2E8-250MSMD,SC2E8-470ML,SC2E8-800HL,SC2E8-600MSMD,SC2E8-420HSMD,SC2E8-300HL,SC2E8-XXXHSMD,SC2E8-75M,SC2E8-90MSMD,SC2E8-90ML,SC2E8-75H,SC2E8-350ML,SC2E8-230MSMD,SC2E8-350H,SC2E8-75ML,SC2E8-420ML,SC2E8-350M,SC2E8-150MSMD,SC2E8-XXXM,SC2E8-250ML,SC2E8-XXXH,SC2E8-800ML,SC2E8-90M,SC2E8-350HL,SC2E8-600HL,SC2E8,SC2E8-90H,SC2E8-75HSMD,SC2E8-230,SC2E8-800HSMD,SC2E8-600M,SC2E8-600H,SC2E8-470H,SC2E8-90HSMD,SC2E8-150HSMD,SC2E8-300MSMD,SC2E8-250HL,SC2E8-90HL,SC2E8-470M,SC2E8-230HSMD,SC2E8-600ML,SC2E8-75HL,SC2E8-350MSMD,SC2E8-150HL,SC2E8-300H,SC2E8-300M,SC2E8-470HL,SC2E8-300HSMD,SC2E8-XXXMSMD,SC2E8-150H,SC2E8-470HSMD,SC2E8-230ML,SC2E8-150M,SC2E8-250HSMD,SC2E8-600HSMD
赛尔特(SETsafe丨SETfuse)TFMOV 机械脱扣型热保护型压敏电阻选型指南(中英文)
目录- TFMOV热保护型压敏电阻 Thermally Protected Varistors
型号- TFMOV20M750,TFMOV10M625,TFMOV20M SERIES,TFMOV20M510,TFMOV20M350,TFMOV20M230,TFMOV20M50,TFMOV10M50,TFMOV20M275,TFMOV20M550,TFMOV20M95,TFMOV10M300,TFMOV10M95,TFMOV25M385TI,TFMOV10M420,TFMOV10M385,TFMOV20M115,TFMOV10M460,TFMOV25M550TI,TFMOV10M140,TFMOV10M190,TFMOV20M 系列,TFMOV20M420,TFMOV20M300,TFMOV20M140,TFMOV25M680TI,TFMOV20M460,TFMOV20M385,TFMOV20M625,TFMOV10M210,TFMOV10M175,TFMOV10M130,TFMOV10M250,TFMOV25M510TI,TFMOV10M,TFMOV25M575TI,TFMOV10M385-4-001,TFMOV20M150,TFMOV25M440TI,TFMOV20M190,TFMOV20M210,TFMOV20M250,TFMOV20M130,TFMOV20M75,TFMOV20M175,TFMOV10M320,TFMOV10M75,TFMOV10M680,TFMOV25M 系列,TFMOV25M SERIES,TFMOV10M SERIES,TFMOV25M,TFMOV25M625TI,TFMOV20M320,TFMOV20M680,TFMOV10M115,TFMOV10M60,TFMOV10M510,TFMOV20M60,TFMOV10M275,TFMOV10M550,TFMOV10M230,TFMOV10M350,TFMOV10M 系列,TFMOV10M150,TFMOV20M
【产品】10D系列径向铅金属氧化物压敏电阻(MOV),最大峰值浪涌电流额定值3.5KA
硕凯电子的10D系列径向引线型金属氧化物压敏电阻(MOV),通过提供比同样尺寸产品更高的浪涌额定值,为较低的直流电压应用提供了理想的电路保护解决方案。最大峰值浪涌电流额定值高达3.5KA(8/20μs脉冲),以防止高峰值浪涌,包括间接雷击干扰,系统开关瞬态和来自电源的异常快速瞬变。
新产品 发布时间 : 2020-08-05
SC2E5 Series High Voltage 2-Electrode Gas Discharge Tube (GDT)
型号- SC2E5-1000D,SC2E5-2000DL,SC2E5-2500DL,SC2E5,SC2E5-XXXDL,SC2E5-1600DL,SC2E5-1600D,SC2E5-3000D,SC2E5-XXXXD,SC2E5-2700DL,SC2E5-3600DL,SC2E5-1000DL,SC2E5-3500D,SC2E5 SERIES,SC2E5-3600D,SC2E5-XXXD,SC2E5-2000D,SG2E5-4000D,SC2E5-4000DL,SC2E5-3000DL,SC2E5-2700D,SC2E5-XXXXDL,SC2E5-2500D
电子商城
品牌:硕凯电子
品类:Surface Mount Multilayer Varistor
价格:¥0.0640
现货: 5,148,500
品牌:硕凯电子
品类:Surface Mount Multilayer Varistor
价格:¥0.0375
现货: 2,050,028
现货市场
服务
测试1.2/50us-8/20us组合波,10/700us-5/320us组合波,8/20us单波。能够模拟雷电瞬变引起的浪涌冲击抗干扰测试,最高电压达20KV,电流达20KA。点击预约,支持到场/视频直播测试,资深专家全程指导。
实验室地址: 深圳/上海 提交需求>
测试等级:空气放电30KV±5%;接触放电30KV±5%,适用标准:GB/T 17626.2、IEC61000-4-2、ISO10605、GB/T 19951;给用户产品出电路保护设计方案建议及整改。点击预约,支持到场/视频直播测试,资深专家全程指导。
实验室地址: 深圳/上海 提交需求>
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