【经验】优恩半导体分享GDT放电管使用技巧
GDT放电管,又称陶瓷气体放电管,其主要应用于电力避雷器的共模电路当中,作用是将雷电流泄放至大地上,GDT放电管还能与差模电路中的MOV压敏电阻串联使用,使其阻断泄漏电流,通常是用在一些信号避雷器上,作第一级泄放浪涌电流作用,但由于放电管的响应速度较慢,在第二级也能做限压保护。本文优恩半导体将为您介绍GDT陶瓷气体放电管在使用上的一些技巧。
第一点,倘若在瞬态脉冲电压下,GDT放电管的气体电离是需要时间的,通常是0.2~0.3微秒,也有0.1微妙左右,这种就算是快速的了,所以会有一个相对高于基准电平的脉冲会向后泄漏,那么为了抑制这种尖峰,有以下几种方法:
1.在GDT放电管上并联一个电容或压敏电阻;
2.在GDT放电管后面串联一个电感器或留一条适当长度的传输线,将尖脉冲衰减到较低水平;
3.可以采取双路保护措施,首级用放电管,次级用TVS管(瞬态抑制二极管)或者TSS,末级用压敏电阻或PPTC自恢复保险丝来隔离。
第二点,VS(直流击穿电压)的选择,它的MIN值应是要大于可能会出现的尖峰电源电压值,或者说是尖峰信号电压的1.2倍。
第三点,Iimp(冲击放电电流)应当根据线路中出现的峰值浪涌电流或需要保护电子电路的峰值浪涌电流来决定,一般按照单次脉冲放电电流的一半计算。
第四点, GDT放电管由于击穿电压误差大,所以一般是串联使用。
第五点,续流的问题,建议在有源电路中串联一个压敏电阻或PPTC来钳制电流,使放电管在脉冲电流击穿后能够恢复正常工作。
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本文由犀牛先生转载自优恩半导体,原文标题为:GDT放电管在使用上有什么技巧吗?,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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企业简介和产品概览 静电保护器(ESD) 瞬态抑制二极管(TVS) 半导体放电管(TSS) 双向触发二极管(SIDAC) 压敏电阻(MOV) 陶瓷气体放电管(GDT) 玻璃气体放电管(SPG) 微型防雷模组(MLPM) 自恢复保险丝(PPTC) RS485/422收发器 CAN收发器 网口RJ45连接器 分立功率器件 EMI保护元器件
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优恩半导体(UNSEMI)保护器件产品选型指南
Electrostatic Discharge Protection Devices Transient Voltage Suppressors Thyristor Surge Suppressors Gas Discharge Tube Spark Gap Protectors Multilayer Chip Varistor Polymeric Positive Temperature Coefficient Thin Film Common Mode Filter Silicon bilateral voltage triggered switch RJ45 Network connectors
优恩半导体 - SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSORS,RADIAL LEAD RESETTABLE POLYMER PTC,TRANSIENT VOLTAGE SUPPRESSORS,SPG,径向引线瞬态电压抑制器,TVS ARRAYS,TVS,薄膜ESD防护,SIDAC,表面贴装自恢复聚合物PTC,径向引线可复位聚合物PTCS,GDT,MLV,聚合物正温度系数,开始投产贴片压敏电阻,ESD ARRAYS,最大似然比,CHIP COMMON MODE FILTER,表面贴装2电极气体放电管,3-ELECTRODE GAS DISCHARGE TUBE,THIN FILM COMMON MODE FILTER,AXIAL LEAD TRANSIENT VOLTAGE SUPPRESSORS,三电极气体放电管,THIN FILM ESD GUARD,移动电话,薄膜共模滤波器,HIGH VOLTAGE 2-ELECTRODE GAS DISCHARGE TUBE,AUTOMOTIVE ELECTRONICS TVS,特殊瞬态电压抑制器,TSS,GAS DISCHARGE TUBE,SWITCHING SPARK GAP,ELECTROSTATIC DISCHARGE PROTECTION DEVICES,MULTILAYER CHIP VARISTOR,保护TVS/ESD阵列,THYRISTOR SURGE SUPPRESSORS,运动类游戏,RADIAL LEAD METAL OXIDE VARISTOR,晶闸管浪涌抑制器,硅双向电压触发开关,RADIAL LEAD TRANSIENT VOLTAGE SUPPRESSORS,SURFACE MOUNT RESETTABLE POLYMER PTCS,表面贴装瞬态电压抑制器,POLYMERIC POSITIVE TEMPERATURE COEFFICIENT,SPECIAL SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSORS,SPECIAL TRANSIENT VOLTAGE SUPPRESSORS,PPTC,高压2电极气体放电管,芯片共模滤波器,SURFACE MOUNT 2-ELECTRODE GAS DISCHARGE 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SERIES,TPSMA6J15A,ESD08V52D-HA,TPSMBJ36A,SMCJ7.5C,SMCJ7.5A,SMAJ400A,SMF19CA,UN3E5-150L,SA90A,UN1812 SERIES,SA90C,10D241K,SMD0805-010,10SMBJ180A,14D431K,LCDA05C-8,LCDA05C-4,25D,P6KE220CA,SA40CA,ESD05V32D-C,HCM1012GD900B05,10SMBT7.5A,ESD05V88D-CBP,10D821KEC,SMD0805-005,UN2E8-150ML,UN1812-760HS,ESD05V88D-CBD,SMCJ64A-AT,SMBJ48CA-AT,P3800TB,TPSMBJ30A,P3800TA,SMDJ90,UN3220-471HS,P6KE100CA,5KP28C,SMDT7.0A,P6SMB SERIES,5KP28A,14D681KJ,TPSMA100A,P3800SC,P3800SB,SMDJ85,6.0SMAJ54CA,ESD30V12D-C,P3800SA,ESD30V12D-A,SMDJ80,SMAJ8.5CA,SMAJ180C,SMAJ180A,UN2E5-90LSMD,TP5.0SMDJ40A,SMDJ75CA-AT,20D122KJ,10SMBT36A,ESD3.3V04D-LC,SMAJ350CA-AT,14D361KSC,5.0SMDJ220A,SMDJ78,UN30-160,UN16-900,ESD05V08P-LC,SMDJ75,25D121K,5KP8.0C,14D561KJ,SMDJ70,5KP8.0A,UN2K8-450L,1.5SMC10A,UN0805-420H,TPSMA6J26CA,SMDJ16CA,SMCJS SERIES,14D560K,SMBJ130C,SMBJ130A,5.0SMDJ350A,SMDJ64,SMDJ60,34S210J,5KP120CA,ESD12V52D-CF,30KP120A,UNS3220 SERIES,SMDJ43A-AT,SMDJ58,UN30-185,SMDJ54,P6KE75,10SMBJ7.0CA,SMDJ51,UN2E5-3600LL,20KP132A,SMAJ160CA-AT,10SMBT7.0A,UN2K8,P6KE62CA,UN30-135,SMDJ48,P6KE68,SMDJ45,SMDJ43,UNB-401M,SMDJ40,TPSMA36CA,P6KE82,ESD15V02D-CKN,5.0SMDJ78C,SMCJ7.0C,SMDT7.5A,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,5.0SMDJ48CA,UN111B339HWA1DFL,15KP51A,TPSMDJ,SMDJ36,SMDJ33,25D751KJ,P4SMA220A,SMDJ30,10SMBJ60A,P6KE91,KB-380,SM8Z26A,ESD3.3V12D-A,ESD3.3V12D-C,SMD1812-200-16V,TPSMCJ,UN2H8-5000LL,SMDJ28,5KP8.5C,SMDJ26,5KP8.5A,SMDJ24,UN2K8-600,SMDJ22,SMDJ20,UN1210-151H,SMD0805-110-12V,SMBJ11A-AT,07D331KJ,ESD0402M,UN16 SERIES,14D751KSC,SMD1812-300-16V,SM8Z28A,SMDJ19,ESD12V52D-HA,SMDJ18,SMDJ17,SMDJ16,TPSMB10J16CA,SMDJ15,TPSMBJ,SMDJ14,TPSMB56CA,SMDJ13,SMDJ12,SMDJ11,SMDJ10,SMCJ36A,SMD0805-010-30V,P6KE30,32D621KJ,SMCJ36C,SA190CA,5.0SMDJ75C,5.0SMDJ75A,UNA-SMD,15SMBJ160CA,SMF54CA,TPSMA6J18A,P4SMA91A,P6KE27,TPSMAJ,P6SMB170A,P0300DM,UN1812-390HS,P6KE24,P6KE22,P6KE43,SMCJ45CA,UN3E8-200HSMD,UN0603E,P6KE75CA,P0300EA,P0300EB,P0300EC,P6KE39,TPSMA6J19A,UN2H8,P6KE36,TCF03025U12002A SERIES,P6KE33,10SMBJ64A,SMCJ58CA,P6KE51,TPSMBJ110CA,SMDJ180CA-AT,25D511KJ,SMD1206-300,SMDJ7.5CA,TPSMA75A,UN1812-270HS,5.0SMDJ17A-AT,1.5KE18CA,14D201KJ,UN30-110,BLC03C-4,UN2K8-350L-2,5.0SMDJ70CA,UN2E5,UN2K8-350L-1,SMCJ33A,P6KE47,SMCJ33C,TPSMA6J16A,UN2E8,UN2E8-150HL,P4SMA350A,P6KE62,P4SMA6.8CA,ESD03V23T-LC,ESD03V23T-LA,ESD08V52D-A,15SMBJ180A,14D301K,10SMBT30A,P6KE56,ESD08V52D-C,TPSMA6J17A,5.0SMDJ33CA,UNS3K,UN2E6-SMD 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【元件】UN3E3-XXXLSMD系列全方型外观结构的陶瓷气体放电管,更好用于通信、电力系统、医疗设备与工业等领域
优恩半导体UN3E3-XXXLSMD系列陶瓷气体放电管在设计采用了全方型的外观结构,这种设计不仅使得放电管在外观上更加美观大方,它在实际应用中也带来了诸多优势,如更便捷的安装与布局、更优化的电气性能、更高的稳定性,使其可以更好的应用于通信、电力系统、医疗设备与工业等领域。
大功率TVS管在DC24V电源端口防护方案中的应用
DC24V电源广泛使用在LED、安防电源等行业,远距离户外传输,导致设备及易遭受雷击浪涌及过压等损坏,此方案采用UN公司经过多年经验积累开发出来大同流的TVS管,响应速度快、残压低,使后端的电路得到全面的防护。
优恩半导体ESD、PPTC、GDT用于CAN总线浪涌保护,可大幅缩减单板占用体积
优恩半导体在本文将对CAN总线浪涌保护之自恢复保险丝选型进行详细的讲解,为工程师们的设计提供理论基础。
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。
解析TSS半导体放电管基本概念以及特征表现
本文中优恩半导体将为大家简要解析TSS半导体放电管基本概念以及特征表现。半导体放电管,简称TSS,也有很多人称为固体放电管,它主要应用场景在于信号线路的雷击浪涌防护。TSS半导体放电管与常见的几种放电管(GDT陶瓷气体放电管、SPG玻璃放电管)有所不同,它是一种利用晶闸管原理制成的过压保护器件,主要依靠PN结的击穿电流触发器件的导通和放电。
【应用】符合IEC 61000-4-5 Surge的AC36V电源端口浪涌&过压防护解决方案
AC36V电源广泛使用在工矿、船舶等LED电源,设备易遭受气候环境的影响而导致击雷击浪涌及过过压等损坏。本文推荐陶瓷气体放电管与压敏电阻串联搭配使用,可以延长压敏电阻的使用寿命及降低压敏电阻的漏电流,且后端的残压较单级防护降低很多。
【技术】TVS管被击穿后的失效模式有哪些?
TVS(瞬态抑制二极管)可有效防护电路遭受瞬态浪涌电压及电流的危害。但它一旦被击穿,可能出现的现象一般有哪些?今天优恩半导体来为大家讲解。GDT放电管、TSS放电管、压敏电阻等电子元件是现如今在电子电路防护中用的比较多的几种过压保护器件,其应用领域十分广泛。
UN3E8系列双列气体放电管
本资料介绍了UN3E8系列双线气体放电管(GDT)的产品特性、电气规格和应用领域。该系列产品适用于电信设备、有线电视网络、测试设备、数据线和电源供应系统等,具有非放射性、符合ROHS标准等特点。
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【技术】TSS固体放电管拥有的八点属性总结
TSS,有人叫它固体放电管、也有人叫它半导体放电管,它主要的应用场景就是在一些通讯接口、安防系列、工业、网络系统中,用作于通讯信号端口的防雷保护。本文介绍TSS(固体放电管)拥有的一些特性。
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加工精度:精密平面磨床正负0.002;铣床正负0.02,ZNC放电正负0.01。CNC加工材料:铝、钢、聚合物等材料。专注于半导体行业、医疗器械、汽车行业、新能源行业、信息技术行业零部件加工。
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昆山清安实验室拥有150L/1000L-定容气体试验舱,提供热失控产气特征测试,包括电池氛围加热测试、电池加热板加热测试、锂电池定容气体试验舱气体分析测试、电池过充测试、电池加热板加热测试等。
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