【应用】通过双标准认证保护器件,给RJ45接口穿上“防弹衣”

2019-08-29 世强 东方的风
保护器件,瞬态抑制二极管,SLVU2.8-4,TVS 保护器件,瞬态抑制二极管,SLVU2.8-4,TVS 保护器件,瞬态抑制二极管,SLVU2.8-4,TVS 保护器件,瞬态抑制二极管,SLVU2.8-4,TVS

【摘要】在RJ45接口上添加保护器件,可以有效地保护终端设备免受干扰或者破坏。保护器件SLVU2.8-4不但满足IEC61000-4-2和IEC61000-4-5标准,而且高度集成,采用SOIC-8封装,设计简单。其能够进行两队平衡线的差模保护,结电容C<2pF,能够满足1000M网口传输速率要求,是RJ45接口防护器件的最佳选择。


以太网已经成为当今生活的一部分。以太网络设备随处可见,例如通信系统、基站、差转站,硬盘录像机、视频监控设备、光端机等。然而,如果这些网络设备不加以保护,往往会遭受雷击、静电等的影响,终端设备甚至会受到直接破坏,造成重大损失。RJ45接口是网络接入的常用接口,在RJ45接口上添加保护器件,可以有效地保护终端设备免受干扰或者破坏。


RJ45网络接口防护主要考虑:

1)ESD干扰

操作人员在接触接口时,人体静电放电将会产生ESD干扰。现在比较通用的ESD标准是IEC61000-4-2,应用人体静电模式,测试电压的范围为2KV~15KV(空气放电),峰值电流为20A/ns,整个脉冲持续时间不超过60ns。


2)浪涌干扰

浪涌干扰是由于网线受到附近高压电缆或者雷击产生的电磁干扰。由于网线采用高度平衡的双绞线制作方式,所以只需要考虑共模干扰。


浪涌电压是一个“慢信号”,其脉冲上升时间在us级。而IEC61000-4-5标准有规定浪涌脉冲为1.2/50us的电压波和8/20us的电流波。


由以上的探讨可知,RJ45接口的保护器件,至少需要同时满足IEC61000-4-2和IEC61000-4-5标准。力特公司作为全球顶级的电路保护器件生产商,专门为RJ45接口防护推出了保护器件SLVU2.8-4,其不但满足IEC61000-4-2和IEC61000-4-5标准,而且高度集成,采用SOIC-8封装,设计简单,设计图可参看下图:


 

图1:SLVU2.8-4参看连接


此外,SLVU2.8-4能够进行两对平衡线的差模保护,即一个网口(收发)只用一个器件。结电容C<2pF,能够满足1000M网口传输速率要求, 是RJ45接口防护器件的最佳选择!


SLVU2.8-4参数:

• ESD,IEC61000-4-2,±30kV(触点),±30kV(空气)

• EFT,IEC61000-4-4,40A(5/50ns)

• 雷击,IEC61000-4-5,40A(8/20μs)

• 每条线路的电容低至2pF

• 2.8V下的(最大)低泄漏电流为1μA

授权代理商:世强先进(深圳)科技股份有限公司
技术资料,数据手册,3D模型库,原理图,PCB封装文件,选型指南来源平台:世强硬创平台www.sekorm.com
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  • xiaoRobert Lv5 技术专家 2019-05-29
    RJ45接口差模防护的选型需要注意哪些?参数应该怎么选
    • gonagawa_世强回复: 补充一下,平台上有一些关于以太网防护方面的资料,可以查阅一下链接:【产品】国产静电二极管--硕凯电子SLVU2.8-4支持以太网ESD保护,负载电容低至3.0pF【产品】360°全封闭外壳RJ45连接器,净重为111.7g,符合IP67防护等级【产品】360°全封闭外壳弯型RJ45 插头,符合IP20防护等级【应用】魏德米勒全新RJ45 集成PCB插座,工业以太网连接首选

      查看全部2条回复

  • xiaoRobert Lv5. 技术专家 2019-05-29
    RJ45接口差模防护的选型需要注意哪些?参数应该怎么选
  • 新生物 Lv8. 研究员 2018-08-08
    学习了
  • Mil Lv8 2017-04-28
    补充:SLVU2.8-4只吸收雷击时通过变压器产生的差模干扰,ESD保护可选择SP0504S,室外防雷需要多颗保险器件组合保护。
  • 用户12808717 Lv3. 高级工程师 2017-02-26
    没接地脚?
    • 世小强回复: 内部相当于TVS管,没接地。
没有更多评论了

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数据手册  -  LITTELFUSE  - Revised: 09/08/17  - 2017年09月08日 PDF 英文 下载

【选型】扬杰科技(YANGJIE)保护器件(瞬态抑制二极管/静电二极管/放电管/稳压二极管)选型指南

目录- 产品特点与应用    瞬态抑制二极管    静电二极管    放电管    稳压二极管    封装尺寸图与焊接尺寸图    包装形态与可靠性测试项目   

型号- SMCJ36CA,SA13CA,1N4743A,5.0SMDJ170C,SMDJ130,P4SMA16A,SMAJ6.0CA,SMDJ12C,ZMM55C22V,SMAJ40CA,SMDJ12A,SMBJ51C,SMDJ43CA,SMBJ51A,P6SMB56A,SMF10CA,1N5941B,SMDJ13A,P6KE22A,5.0SMDJ170A,P6KE22C,SMB2Z300A,1N4742A,SMDJ120,P6KE24A,SMDJ78CA,SMDJ11C,SMDJ11A,SMF26A,5.0SMDJ15,SMB3Z190A,5.0SMDJ14,5.0SMDJ13,5.0SMDJ12,5.0SMDJ19,5.0SMDJ18,1N5940B,5.0SMDJ17,SMF45CA,5.0SMDJ16,5.0SMDJ300CA,SA43C,1.5SMC13CA,SA43A,5.0SMDJ11,BZX55C8V2,5KP75C,SMCJ14CA,P4KE13CA,5KP75A,1N4745A,SMCJ190C,SMCJ78A,SMCJ190A,P4SMA18A,P6KE18CA,SMDJ10A,SMDJ58C,ZMM55B39V,5.0SMDJ85C,5.0SMDJ85A,SMDJ10C,ZMM55C24V,5KP78A,1.5KE150C,1N5943B,P4SMA16CA,SMCJ100CA,P6KE68C,5KP28CA,5KP30C,P6KE20A,SMDJ110,SMBJ300A,5KP30A,P6KE20C,5KP78C,1N4746A,1.5KE150A,SMBJ150CA,SMF120CA,1N4744A,P4SMA91CA,SMB3Z3.3A,SMDJ170A,SMB2Z24A,SA7.0CA,SMAJ70A,SMA2Z43A,P4SMA520A,SMAJ70C,SMAJ75CA,P6E350C,P6KE220,SMF24A,SMDJ170C,SMBJ16CA,1N5942B,SMDJ58A,P6SMB170CA,SMCJ30C,SA45C,SMDJ100,SA45A,SMCJ78C,1.5KE220CA,SA48CA,SMCJ30A,5.0SMDJ12CA,ZMM55C5V1,P6KE27A,SA180C,P6KE27C,ZMM55C5V6,1.5KE500,SA180A,ZMM55B33V,P6SMB51A,1N5946B,SMF58CA,1N5945B,SA40C,SMAJ7.0,SA40A,SMCJ75C,SMAJ7.5,SMBJ5.0,1N4748A,SMCJ75A,SMF190A,SA22CA,SMAJ100C,P6KE8.2CA,SMCJ2,P5000SB,SMAJ100A,P5000SC,P4SMA300A,P5000SA,SMF22A,SMB3Z3.9A,SMDJ30CA,P6SMB250A,1N5944B,ESDSLC5V0LB,P4SMA160CA,1.5SMC400A,P4KE130CA,P4KE180A,5.0SMDJ170CA,P4KE180C,SA110CA,SMB2Z22A,1N4747A,P4SMA82CA,BZX55B5V1,ESD12VD3,P4KE250CA,SMDJ54A,1.5KE520,ZMM55C20V,1.5KE7.5C,SMB3Z3.6A,SMDJ160CA,1N5948B,1.5KE7.5A,SMBJ400CA,SMDJ54C,ZMM55C68V,P6SMB120A,SMF36CA,P6KE250,SMCJ80CA,SMB3Z47A,P6KE24C,SMA2Z270A,ESDSLC3V3D3BS,ESD12VD5,P6SMB51CA,P4KE22CA,1.5SMC300CA,BZX55B5V6,SMB2Z68A,P6SMB300CA,SMCJ220CA,SMF20A,ZMM55B2V7,ZMM55B36V,SMA2Z6.2A,1N5947B,P6SMB8.2A,5.0SMDJ80A,5.0SMDJ80C,ESDSLC3V3LZB,5KP15CA,SMB2Z20A,1.5KE51A,SMA2Z47A,P6KE100A,1N4749A,1.5SMC39CA,1.5KE51C,P6KE100C,P0080SC,P4SMA56A,1N5371B,SMA5923A,1.5KE36CA,SA70CA,P0080SB,P4500SC,P6KE36CA,P0080SA,P4500SB,5KP36C,5KP36A,1.5KE550,ZMM55C62V,P6SMB16A,P6SMB300A,SMF14CA,5.0SMDJ130C,1.5KE500C,5.0SMDJ130A,SMAJ18CA,SA17CA,1.5KE170CA,1N5370B,SMA5922A,5KP90CA,SMDJ51C,1N5949B,SMDJ51A,P4SMA170A,P4500SA,ZMM55B30V,1.5SMC47A,P6SMB15A,SMAJ250CA,SMCJ18CA,SMB3Z150A,P4SMA10A,1N5240B,SMA5925A,1.5KE56A,1N5373B,5.0SMDJ30CA,1.5SMC440A,SMA2Z82A,SMDJ120CA,P6SMB91CA,1.5SMC170CA,P4SMA12CA,P6SMB520A,SA5.0CA,1.5KE56C,5KP24CA,P6SMB16CA,P4SMA11A,P6KE500C,1N5372B,P6KE500A,SMBJ90C,SMA5924A,SMBJ90A,SMF64A,SMBJ12CA,P4KE6.8,P6SMB13A,SMCJ70C,SMAJ130CA,SMBJ350CA,SMA2Z180A,SMCJ70A,SMF80CA,SA48A,SMAJ80CA,SMBJ5.0A,SMA5927A,SMCJ7.5,P4SMA12A,SMBJ5.0C,P4KE39CA,SMCJ7.0,1N5242B,1N5375B,1.5SMC220A,SMCJ100C,SMCJ100A,ZMM55C9V1,P6SMB12A,1.5KE110,SMBJ9.0,1.5KE10C,1.5KE10A,SA48C,P4SMA13A,SMA5926A,1N5374B,1N5241B,P6KE180CA,SMB3Z7.5A,P6SMB10A,5KP7.5CA,P4SMA47CA,P6SMB11A,1.5KE100,SMDJ5.0C,SMDJ5.0,SMDJ5.0A,SA26CA,P6SMB100CA,5.0SMDJ78CA,1.5KE12A,1N5244B,SMB2Z27A,P4KE400A,1N5377B,P4KE400C,SMBJ170C,SMBJ170A,ZMM55B75V,1.5KE130,1.5KE10CA,SMCJ140CA,1.5KE12C,SMA5929A,BZX55B9V1,SMA5928A,5.0SMDJ250CA,5.0SMDJ43CA,SMF60A,1N5243B,1.5KE11A,P4SMA15A,1N5376B,ZMM55B6V2,SMDJ12CA,P6KE27CA,5KP33A,P6SMB82CA,ZMM55B6V8,1.5KE120,1.5SMC500CA,1.5KE11C,5KP11CA,P1800SC,P1800SB,P1800SA,5KP33C,SMBJ5.0CA,P4KE6.8CA,P4KE6.8C,P4KE68,P6SMB47CA,SA150CA,SMF200A,1.5SMC250CA,1N5246B,1N5379B,P6SMB220CA,1.5KE82,ZMM5256B,P4KE220,SA9.0,P4KE75,SMCJ85CA,SMDJ200CA,P4SMA130A,SMDJ190CA,SMF70A,SMB2Z160A,P6KE7.5,P4KE20C,1N5378B,P4KE20A,1N5245B,1.5SMC51A,P4KE68C,SMBJ78CA,P4KE68A,SMAJ48CA,SMBJ43CA,1.5KE91,SMB3Z110A,ZMM5257B,P4KE82,5KP33CA,SMCJ7.5C,SMCJ7.5A,SMA2Z3.0A,SMAJ400A,SMBJ180,SMF19CA,1N5248B,P2300SB,SMCJ110C,P2300SC,SA90A,SMCJ110A,SA90C,ESDSLC18VLB,5KP20CA,SMBJ18C,P4KE91,SMBJ18A,SA9.5CA,SA75CA,SMB3Z240A,P4KE200,P4KE62CA,ZMM5254B,1.5SMC75CA,SMCJ8.5CA,P6SMB12CA,SMAJ300CA,P6KE220CA,SA40CA,P4SMA30CA,SMBJ190,1N5247B,1.5KE27CA,SMAJ26CA,5KP160A,P2300SA,5KP160C,SMBJ19C,SMBJ19A,ZMM5255B,1.5SMC6.8A,5.0SMDJ440A,P4KE27,P4KE24,SMBJ160,SMDJ90,SMA5931A,1.5KE47,SA100C,1.5KE43,SMBJ16C,P6KE100CA,P6KE22CA,SMBJ16A,5KP28C,SMBJ30CA,1.5SMC56A,5KP28A,P4KE30,SMAJ36A,P4KE33,P4SMA51A,SMAJ36C,ZMM5252B,SMB3Z82A,P4KE36,SMDJ85,SMBJ170,SMF110A,SMB3Z200A,P4KE39,SMDJ80,SMA5930A,SMAJ180C,SMAJ8.5CA,1.5KE56,SMAJ180A,SMBJ440CA,P4KE100A,1N5249B,1.5KE130CA,1.5KE51,P4KE100C,SMBJ17C,P4SMA43CA,SMBJ17A,SMF85CA,ZMM5253B,5.0SMDJ220A,SMBJ120CA,P4KE43,SMDJ78,P6E300CA,SMAJ33C,SMDJ75,ZMM5250B,5.0SMDJ220CA,P4KE47,5KP8.0C,SMBJ140,5KP8.0A,SMDJ70,SMA5933A,1.5SMC10A,1.5KE68,1.5KE62,5KP64CA,SMBJ14C,SMB2Z4.7A,SMBJ14A,P6SMB18A,P4SMA56CA,SMAJ13CA,SMDJ16CA,P4KE51,P4KE56,SMBJ130C,SMBJ130A,1.5SMC130CA,5.0SMDJ350A,SMDJ64,SMDJ440CA,1.5KE500A,5.0SMDJ36A,SMBJ150,SMDJ60,P4KE62C,SMA5932A,P4KE62A,5.0SMDJ36C,5KP120CA,SMA2Z91A,1.5KE75,P6E520C,SA100A,SMBJ15C,P6KE180A,SMBJ15A,P6KE180C,SMAJ170CA,P4KE62,SMDJ300A,SMDJ58,ZMM5251B,SMDJ54,P6KE75,P4SMA440A,SMA2Z100A,SMBJ120,SMDJ51,5.0SMDJ80,SMBJ9.0C,ESD5V5LB,SA5.0,SMBJ9.0A,SMBJ11C,SMBJ12A,SMF7.5A,5KP7.5,ESD24VD3,SMAJ6.0A,P6KE62CA,SMAJ6.0C,SMDJ48,P6KE68,SMF160CA,5.0SMDJ100CA,SMBJ350A,SMDJ45,5.0SMDJ85,1.5SMC91A,SMDJ120C,SMDJ43,SMB2Z120A,SA7.5CA,SMBJ130,SMDJ40,5.0SMDJ90,P

选型指南  -  扬杰科技 PDF 中文 下载

车用瞬态抑制二极管旨在保护你的敏感设备

车用瞬态抑制二极管----TPSMC和TPSMD系列震撼袭来!汽车电子元件的安全管家,非常适合其直流电源保护和ESD保护!

新产品    发布时间 : 2016-03-21

Littelfuse(力特) P6SMB6.8AT3G/SZP6SMB6.8AT3G 瞬态抑制二极管 数据手册

型号- P6SMB200AT3G,P6SMBXXXAT3G,P6SMB30AT3G,P6SMB22AT3G,P6SMB150AT3G,P6SMB39AT3G,P6SMB43AT3G,P6SMB13AT3G,P6SMB56AT3G,P6SMB120AT3G,P6SMB8.2AT3G,P6SMB91AT3G,P6SMB7.5AT3G,P6SMB6.8AT3G,SZP6SMBXXXAT3G,P6SMB10AT3G,P6SMB36AT3G,P6SMB75AT3G,P6SMB180AT3G,P6SMB18AT3G,P6SMB27AT3G,P6SMB24AT3G,P6SMB62AT3G,P6SMB9.1AT3G,P6SMB100AT3G,P6SMB15AT3G,P6SMB47AT3G,P6SMB12AT3G,P6SMB20AT3G,P6SMB51AT3G,P6SMB33AT3G,SZP6SMB6.8AT3G,P6SMB130AT3G,P6SMB68AT3G,P6SMB160AT3G,P6SMB16AT3G

数据手册  -  LITTELFUSE  - 2017年01月23日 PDF 英文 下载

【产品】断态电压为58V的瞬态抑制二极管阵列SP1050系列,用于提供以太网供电PSE保护

LLittelfuse推出的瞬态抑制二极管阵列SP1050系列,其中SP1050-04BTG采用节省空间的SOIC-8封装,为以太网供电PSE设备提供过压保护。它融合了4个瞬态抑制二极管,每个均配有独立的去耦电容器,可稳定电源。96V的低钳位电压使其能够兼容PSE控制器技术。

新产品    发布时间 : 2019-12-09

数据手册  -  LITTELFUSE  - 2013年12月20日 PDF 英文 下载

以太网RJ45的隔离变压器后端需要一款保护器件做ESD防护,请推荐一款保护器件。

以太网RJ45接口后端的隔离变压器输出的是两对差分信号,对于100M以上的通讯速率要求防护器件的结电容小,推荐用TVS阵列SP0504S,这个TVS阵列的结电容为0.85pF,反向工作电压为6V,钳位电压范围为9-13V。

技术问答    发布时间 : 2017-09-26

【产品】峰值脉冲功率为1500W的表面贴装瞬态抑制二极管1.5SMB系列,采用DO-214AA封装

Littelfuse推出的表面贴装瞬态抑制二极管1.5SMB系列专门用于保护敏感电子设备,使其免受雷击和其他瞬态电压事件引起的瞬态电压侵害。1.5kW,采用DO-214AA封装,高电流密度与小封装尺寸的结合。

新产品    发布时间 : 2019-11-05

瞬态抑制二极管(TVS)SP1001漏电流参数的意义是什么?

瞬态电压抑制二极管的漏电流是指PN结间在截止状态下流过的微弱电流,PN结上的漏电流是不可能避免的,因为PN结间只要有电子的存在就不可避免的会做无规则的运动,因而产生漏电流。

技术问答    发布时间 : 2017-10-10

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贴片LED二极管/灯珠定制

可定制LAMP LED、 CHIP LED、 PLCC LED、 汽车用车规级LED、COB LED的尺寸/电压/电流等参数,电压1.5-37V,电流5-150mA,波长470-940nm。

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贴片灯珠定制

可定制单色光灯珠、双色灯珠、全彩灯珠、发光二极管、贴片灯珠、贴片LED等产品,尺寸:0.6*0.3mm-3.2*2.7mm,波长:405-940nm,亮度:24-750mcd,电压:1.5-3.5V。

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