【应用】硕凯电子推出基于MOV和TVS设计的LED的浪涌过电压防护方案

时间： 2019-04-03 来源：硕凯电子

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发光二极管(LED)是一种易碎的装置，容易受到热、机械冲击、静电放电及闪电的威胁，特别是在室外应用时。由于照明及背光显示的LED灯串使用的增加，需要研发工程师对LED串的可靠性给予更多关注。高亮度的LED，因其蓝宝石基板，对邻近的雷击闪电攻击造成的电压瞬变非常敏感。本文设计了解决LED照明电路的浪涌过电压防护问题的方案：

在电路的交流电输入侧，会出现过压事件与电压瞬变。它们通常是由附近的雷击造成的，但也可能通过电力线上的瞬间状态变化产生。用于过压条件的典型保护装置是金属氧化物压敏电阻(MOV)，可以与瞬态电压抑制器(TVS)相结合。用于电源保护的电路还需要与地面隔离，防止可能的电击危险（这些规格都包含在IEC/UL60950-1、UL1449与IEC/UL6500）。上图显示了达到这些要求的解决方案。该设计结合了瞬态电压抑制器和金属氧化物压敏电阻。

LED照明设备成本低，性能高，维护少，并且它们的寿命可持续数万小时。其工作过程中存在各种恶劣电气危害的影响，因此提高LED照明的高可靠性至关重要，硕凯建议使用压敏电阻和TVS组成的浪涌防护电路，为LED提供浪涌过电压保护。

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本文由宝丁转载自硕凯电子，原文标题为:LED照明的电路保护设计，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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【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。

2020-08-05 - 新产品代理服务技术支持批量订货

硕凯电子（Socay）TVS瞬态抑制二极管选型指南

目录- Surface Mount Transient Voltage Suppressors(TVS) Axial/Radial Lead Transient Voltage Suppressors (TVS) Dual Programmable Transient Voltage Suppressor(TVS)

型号- 5.0SMDJ170C,P4SMA16A,SMAJ6.0CA,SMAJ40CA,30KPA170CA,SMF10CA,KD-012,5.0SMDJ170A,8.0SMDJ24A,SMDJ78CA,KD-015,5.0SMDJ15,5.0SMDJ14,KD-025,5.0SMDJ13,5.0SMDJ12,5.0SMDJ19,KD-020,5.0SMDJ18,5.0SMDJ17,5.0SMDJ16,5.0SMDJ300CA,1.5SMC13CA,5.0SMDJ11,SMCJ14CA,P4SMA18A,SMDJ58C,K,5.0SMDJ85C,5.0SMDJ85A,P4SMA16CA,SMCJ100CA,P6KE68C,20KPA48CA,5KP30C,SMBJ300A,5KP30A,SMBJ150CA,SMF120CA,8.0SMDJ26A,SMDJ170A,SMAJ70A,P4SMA520A,SMAJ70C,SMDJ170C,3KP80CA,SMDJ58A,SMCJ30C,SA48CA,SMCJ30A,SA180C,1.5KE500,SA180A,SMAJ7.0,SMAJ7.5,SA22CA,SMAJ100C,P6KE8.2CA,SMAJ100A,P4KE180A,5.0SMDJ170CA,P4KE180C,SA110CA,30KPA54CA,P4SMA82CA,SMDJ54A,1.5KE520,30KPA198A,SMDJ160CA,20KPA180A,3KP14CA,SMBJ400CA,SMDJ54C,SMF36CA,SMCJ80CA,P6SMB51CA,P4KE22CA,8.0SMDJ22A,SMCJ220CA,15KPA40CA,5.0SMDJ80A,5.0SMDJ80C,1.5KE51A,1.5SMC39CA,1.5KE51C,P6SMB,1.5KE36CA,SA70CA,5KP36C,15KPA100A,5KP36A,1.5KE550,P6SMB16A,30KPA,SMAJ18CA,SA17CA,1.5KE170CA,5KP90CA,SMDJ51C,SMF,SMDJ51A,3KP140CA,3KP45CA,P4SMA170A,P6SMB15A,P4SMA10A,3KP58CA,1.5KE56A,1.5SMC440A,LCE64A,P6SMB520A,SA5.0CA,1.5KE56C,5KP24CA,P6SMB16CA,P4SMA11A,P6KE500C,P6KE500A,SMBJ90C,SMBJ90A,SMF64A,SMBJ12CA,P6SMB13A,SMBJ5.0A,P4SMA12A,SMBJ5.0C,LCE6.5,P6SMB12A,SMBJ9.0,P4SMA13A,P6KE180CA,P6SMB10A,P4SMA47CA,P6SMB11A,KA-190,SMDJ5.0,P6SMB100CA,5.0SMDJ78CA,15KPA18CA,P4KE400A,P4KE400C,1.5KE10CA,LCE60A,SMF60A,P4SMA15A,15KPA30A,30KPA84A,P6KE27CA,5KP33A,P6SMB82CA,15KPA180CA,1.5SMC500CA,5KP11CA,30KPA36CA,5KP33C,20KPA52CA,P4KE6.8CA,P4KE6.8C,P6SMB47CA,1.5SMC250CA,P6SMB220CA,3KP140C,3KP140A,P4KE220,SA9.0,SMDJ200CA,3KP64C,SMDJ190CA,SMF70A,15KPA24A,30KPA90A,1.5KE380CA,3KP64A,P6KE7.5,P4KE20C,P4KE20A,SMAJ48CA,SMBJ43CA,SMCJ7.5C,SMCJ7.5A,SMAJ400A,30KPA71CA,SMBJ180,SMF19CA,LCE7.0,SA90A,SA90C,LCE7.5,30KPA102A,SMBJ18C,SMBJ18A,P4KE200,1.5SMC75CA,SMAJ300CA,P6KE220CA,SA40CA,SMBJ190,15KPA22A,SMBJ19C,KA-170,SMBJ19A,20KPA96CA,SMBJ160,SMDJ90,3KP9.0CA,SA100C,S61089,SMBJ16C,P6KE100CA,SMBJ16A,20KPA240CA,5KP28C,SMBJ30CA,5KP28A,30KPA108A,SMDJ85,SMBJ170,SMF110A,SMDJ80,15KPA28A,SMAJ180C,SMAJ8.5CA,SMAJ180A,P4KE100A,P4KE100C,SMBJ17C,SMBJ17A,SMF85CA,5.0SMDJ220A,SMBJ120CA,SMDJ78,SMDJ75,20KPA120CA,5KP8.0C,SMBJ140,SMDJ70,5KP8.0A,1.5SMC10A,3KP75CA,SMBJ14C,SMBJ14A,SM8S,P6SMB18A,SMDJ16CA,SMBJ130C,SMBJ130A,1.5SMC130CA,5.0SMDJ350A,SMDJ64,15KPA26A,15KPA48CA,SMDJ440CA,SMBJ150,SMDJ60,5KP120CA,SMBJ15C,SA100A,SMBJ15A,SMAJ170CA,SMDJ58,KA-133,SMDJ54,P6KE75,SMBJ120,SMDJ51,5.0SMDJ80,15KPA180A,30KPA260CA,SMBJ11C,SMBJ12A,SMAJ6.0A,P6KE62CA,SMAJ6.0C,SMDJ48,P6KE68,SMDJ45,5.0SMDJ85,1.5SMC91A,SMDJ43,SMBJ130,SA7.5CA,SMDJ40,5.0SMDJ90,P6KE82,5.0SMDJ78C,SMCJ7.0C,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,15KPA22CA,SMBJ12C,5.0SMDJ48CA,SMBJ13C,SMBJ13A,P6KE75A,SMDJ36,P6KE75C,SMDJ33,P4SMA220A,SMBJ100,SMDJ30,SMCJ150C,KB-380,P6KE91,SMCJ150A,20KPA172A,P4KE27C,SA6.0C,SA6.0A,SMDJ28,5KP8.5C,5.0SMDJ60,SMDJ26,5KP8.5A,SMAJ78A,SMDJ24,5.0SMDJ64,KA-100,SMAJ78C,SMDJ22,SMBJ110,SMDJ20,5KP120A,5KP120C,SMBJ10C,SMBJ10A,SMBJ11A,P4KE27A,5.0SMDJ400A,5.0SMDJ78,SMAJ22CA,SMDJ19,SMDJ18,SMDJ17,SMDJ16,5.0SMDJ70,8.0SMDJ22CA,SMCJ6.5CA,SMDJ15,SMDJ14,SMDJ13,5.0SMDJ75,SMDJ12,SMDJ11,SMAJ75A,SMDJ10,SMCJ36A,SMAJ75C,P6KE30,SMCJ36C,SA190CA,5.0SMDJ75C,5.0SMDJ75A,5.0SMDJ48,P4SMA9.1A,5.0SMDJ45,SMF54CA,5.0SMDJ40,P4SMA91A,1.5KE100A,P6KE27,P6SMB170A,1.5KE100C,5.0SMDJ43,P6KE24,P6KE22,P4KE250,P6KE43,SMCJ45CA,3KP60A,30KPA84CA,P4KE24C,P6KE75CA,P4KE24A,5.0SMDJ58,SMAJ6.5C,5.0SMDJ51,P6KE39,3KP60C,P6KE36,5.0SMDJ54,SMAJ6.5A,SMBJ440A,P6KE33,SMCJ58CA,P6KE51,SMDJ7.5CA,5.0SMDJ17CA,1.5KE18CA,5.0SMDJ26,5.0SMDJ24,5KP60CA,5.0SMDJ28,5.0SMDJ70CA,5.0SMDJ22,SMCJ33A,P6KE47,5.0SMDJ20,SMCJ33C,P4SMA350A,P6KE62,3KP6.5,P4KE22C,P4KE22A,3KP6.0,P4SMA6.8CA,5.0SMDJ36,SA6.5C,5.0SMDJ33,P4KE6.8A,SA6.5A,P6KE56,5.0SMDJ30,5.0SMDJ33CA,SMAJ60,SA36CA,SMBJ,1.5KE6.8,SMDJ20CA,SMF6.0A,P4SMA15CA,LCE58A,SMAJ58,SMAJ54,3KP6.0CA,SMAJ51,SMDJ160A,3KP26CA,SMAJ60A,SMAJ,SMAJ60C,SMDJ160C,5.0SMDJ70C,5.0SMDJ70A,SMDJ48C,SMDJ48A,SMF22CA,SMCJ20C,SMAJ45,SMCJ7.0CA,SMAJ48,SMCJ20A,P4KE36CA,SMAJ43,SMAJ40,P6KE200A,SMDJ,20KPA36CA,SMBJ85C,SMBJ85A,1.5KE600,1.5KE380A,P4KE9.1,1.5KE380C,P4KE120CA,SMAJ6.0,P4SMA400CA,SMAJ6.5,SMAJ36,P6KE200C,SMAJ30,SMAJ33,SMF180A,SMCJ,SMDJ45C,SMDJ33CA,SMDJ45A,1.5SMC8.2CA,SMAJ28,SMAJ24,SMAJ26,SMAJ20,SMAJ22,SMCJ13CA,SMDJ64CA,3KP13CA,5KP180CA,SMAJ17,LCE54A,SMAJ16,SMAJ19,SMAJ18,SMAJ13,SMAJ12,1.5KE62A,20KPA26A,SMAJ15,SMAJ14,SMAJ11,20KPA104CA,SMAJ10,1.5KE62C,SMCJ26CA,SA75A,20KPA24A,SA75C,1.5SMC91CA,SMDJ43A,SMDJ43C,1.5SMC180CA,1.5KE250C,20KPA300CA,1.5KE250A,1.5KE8.2C,SA78A,SA190C,SA78C,P4SMA200A,SMAJ85CA,SA190A,1.5KE8.2A,20KPA192A,1.5SMC300A,P6SMB180CA,P4SMA150CA,SMBJ90CA,20KPA28A,SMAJ110C,SMAJ110A,30KPA66CA,SMF6.0CA,P6SMB7.5A,5KP15,5KP16,5KP13,SMF48CA,5KP14,5KP11,5KP12,5KP10,P4KE10CA,P4KE18CA,1.5KE350CA,SMDJ40C,SMDJ40A,5KP24C,5KP24A,1.5SMC12A,SMAJ140CA,30KPA48CA,20KPA20A,SMBJ80C,1.5SMC11A,SMBJ80A,15KPA40A,1.5KE24CA,SMF78A,SMDJ110CA,P6SMB27A,LCE51A,1.5KE600C,1.5KE68C,P6KE500CA,1.5KE600A,1.5KE68A,SMBJ24CA,20KPA104A,SMBJ8.5,5KP26C,5KP26A,SMBJ8.0,SA18CA,SMAJ19CA,5.0SMDJ64CA,15KPA220A,1.5SMC13A,P6SMB8.2CA,15KPA17CA,SMF75A,1.5KE11CA,30KPA180A,15KPA43A,P6KE15CA,P6SMB24A,1.5SMC16A,SMCJ440A,15KPA70CA,5KP20C,5KP20A,1.5KE68CA

2019/3/27 - 硕凯电子 - 选型指南代理服务技术支持批量订货