【应用】千兆以太网口设计电路防护方案,采用GDT在变压器前端做共模(八线)浪涌防护
局域以太网从10M开始发展,经历几多的变迁,发展到现在的千兆以太网。千兆以太网以高效、高速、高性能为特点,已经广泛应用在金融、商业、教育、政府机关及厂矿企业等行业。随着千兆以太网口应用范围的逐步扩大,其防护需求也越来越受重视,硕凯电子作为专业的电路保护专家,就经常碰到以太网口防护的客户需求。今天硕凯电子本着好多东西大家一起分享的原则,来给大家介绍硕凯FAE工程师们是如何给千兆以太网口进行防护方案设计的:
图 1 产品外观
一、应用背景:
1.全球气候变暖,雷雨天气增多。
2.网络设备雷击损坏后,危害大。
3.网络设备雷击损害后,维修成本高。
4.高浪涌防护设备成为行业趋势。
二、防护电路图:
图 2 防护电路图
使用硕凯器件:
●直流标称电压200±30%V
●冲击电流(8/20μs)0.5KA
●电容值<0.5pF
●电阻>100MΩ
GDT【UN1812-90CSMD】
●直流标称电压90±20%V
●冲击电流(8/20μs)2.0KA
●电容值<1.0pF
●电阻>1GΩ
●Vrwm:3.0V
●Vb:4.0V
●防静电能力(接触/空气):8KV/15KV
●结电容(f=1MHz):1.2pF
●封装:SOD-323
三、方案应用:
1.工业/家用电脑/笔记本
2.交换机/路由器
3.枪机设备
4.网络打印机
5.机顶盒
6.智能交通系统
7.其他含以太网端口设备
四、方案说明及注意事项:
1.此方案采用GDT在变压器前端做共模(八线)浪涌防护。
2.网络变压器后级用体积小,结电容低的TVS吸收差模能量,该TVS反应时间快,兼顾防护静电功能。
3.符合802.11电气标准。
4.满足IEC61000-4-5、GBT17626.5等浪涌测试标准。
5.满足IEC61000-4-2、GBT17626.2等静电测试标准。
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电路保护主要有两种形式:过压保护和过流保护。电路保护最常见的器件有GDT、MOV和TVS。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。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。
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硕凯电子(Socay)GDT陶瓷气体放电管选型指南
目录- Surface Mount 2-Electrode Gas Discharge Tube 2-Electrode Gas Discharge Tube High Voltage 2-Electrode Gas Discharge Tube 3-Electrode Gas Discharge Tube Switching Spark Gap
型号- UN3E8-150HP,UN3E8-150HM,UN2E8-150M,UN2E6-75LSMD,UN2E5-350L,UN1210-400BSMD,UN2E8-230HL,UN2E5-600LL,UN2E8-2000L,UN2E8-420HSMD,UN3E5-420L,UN3E8-90HP,UN3E8-90HM,UN3E5,UN3E6,UN2E5-470LSMD,UN3E8-600H,UN2K8-400SMD,UN3E8,UN2E8-250MSMD,UN3E6-350M,UN3E5-75LSMD,UN2E6-300LSMD,UN3E8-420HMF,UN2E8-300HSMD,UN2E5-230L,UN3E5-75LM,UN3E8-75HM,UN2K8-300L,UN3E8-75HP,UN2E8-300H,UN3E8-75H,UN2K8-600SMD,UN2E8-150H,UN2K8-450,UN2E8-300M,UN2E8-250HSMD,UN3E6-230M,UN2E5-470LL,UN2E8-150HSMD,UN2E6-150LSMD,UN2E5-350LSMD,UN1812-600CSMD,UN2E5-600LSMD,UN2E5-1600DL,UN3E5-150L,UN2K8-XXXSMD,UN2E8-420H,UN2E5-2500DL,UN3E6-XXXM,UN2E8-800H,UN3E6-XXXL,UN2E5-90L,UN2E8-420M,UN3E5-75L,UN2K8-800SMD-1,UN1206-400ASMD+,UN2E6-400LSMD,UN2E8-800M,UN3E8-230H,UN2H8-XXXLL,UN2E5-XXXL,UN3E6-150MM,UN2E8-75MSMD,UN2E5-3500D,UN2E5-250LL,UN2E8-150MSMD,UN2E8-800ML,UN2E5-XXXD,UN2E5-470L,UN3E8-90HMF,UN1206-470ASMD,UN2E8-XXXM/HL,UN3E5-300L,UN2K8-800L,UN2E8-75ML,UN2E8-2500L,UN1210-150BSMD,UN2E8-150ML,UN3E6-470M,UN2E8-90ML,UN2E8-1000L,UN2E8-470MSMD,UN3E5-470LM,UN2E8-800MSMD,UN2E8-1000LL,UN2E5-1000DL,UN3E6-XXXMM,UN2E8-800HL,UN2E8-420HL,UN2H8-4000LL,UN1812-470CSMD,UN3E8-350HMF,UN3E8-XXXHM,UN1210-470BSMD,UN2E6-350LSMD,UN2E5-1000D,UN2E8-470H,UN2E5-230LL,UN2K8-230SMD,UN2E8-470HSMD,UN2E8-2000LL,UN2E5-1600D,UN2E8-2500LL,UN2E8-250M,UN3E5-150LM,UN3E6-XXXLM,UN3E8-75HMF,UN3E8-XXXHP,UN2E8-470HL,UN2E5-90LSMD,UN1812-200CSMD,UN3E8-250HM,UN2E8-230ML,UN3E8-300HMF,UN3E5-XXXLSMD,UN2E5-2700D,UN3E8-250HP,UN2E5-230LSMD,UN2E8-75HSMD,UN2E8-2700L,UN3E5-350LSMD,UN3E5-420LM,UN3E6-250M,UN2K8-800,UN3E5-250LSMD,UN2K8-450L,UN2E5-XXXDL,UN2K8-600L-1,UN1206-230ASMD,UN2E8-3000LL,UN2K8-600-1,UN3E5-600LM,UN2E5-600L,UN3E6-75M,UN2H8-6000L,UN2E5-300LL,UN2E8-230HSMD,UN2E8-250H,UN2E8-300HL,UN2H8-4500LL,UN2K8-600SMD-1,UN3E8-230HMF,UN3E6-150M,UN2E8-90M,UN3E5-150LSMD,UN3E6-420MM,UN3E8-600HM,UN2E8-90H,UN2E8-230MSMD,UN3E8-600HP,UN2E8-800HSMD,UN2E8-420MSMD,UN3E5-250L,UN1210-420BSMD,UN1812-300CSMD,UN2E5-350LL,UN2E8-3500LL,UN1210-230BSMD,UN2K8-350,UN2K8-230,UN2E8-350HL,UN3E6-250MM,UN2E6-SMD,UN3E6-420M,UN2E5-150LSMD,UN3E5-300LSMD,UN1812-400CSMD,UN3E5-350L,UN2K8-500SMD,UN2E5-800LL,UN3E8-90H,UN2E6-600LSMD,UN2E8-90MSMD,UN3E5-XXXLM,UN2K8-230L,UN2E5-800L,UN3E8-470HM,UN2E8-600H,UN3E8-300HP,UN2E8-90HL,UN3E8-470HP,UN2E8-470ML,UN3E8-300HM,UN2E8-600M,UN3E6-75MM,UN3E6-470MM,UN2K8-500,UN3E6-300M,UN3E8-350HM,UN3E8-350HP,UN2E5-2000D,UN3E8-XXXHMF,UN3E5-470L,UN3E5-XXXL,UN1206-420ASMD,UN2K8-600L,UN1812-230CSMD,UN3E8-600HMF,UN2E8-600HSMD,UN3E6-300MM,UN2E5-300L,UN2K8-300SMD,UN2E5-400LL,UN2E8-300ML,UN3E5-250LM,UN2E8-XXXM/HSMD,UN2E8-350ML,UN2E8-600ML,UN1206-150ASMD,UN1812-350CSMD,UN3E8-420HP,UN2E8-350M,UN2K8-XXXL,UN1812-90CSMD,UN2H8-5000L,UN3E6-350MM,UN3E8-420HM,UN2E8-250HL,UN2E8-XXXLL,UN2E5-90LL,UN2K8-500L,UN3E5-600L,UN2E8-600MSMD,UN3E5-420LSMD,UN2E8-1600L,UN2K8-350SMD-2,UN2H8-5000LL,UN2K8-350SMD-1,UN2E8-230M,UN3E6-90MM,UN3E6-600MM,UN3E8-800H,UN2E8-230H,UN3E8-420H,UN2K8-600,UN2E6-90LSMD,UN2E5-75L,UN3E5-90L,UN2E8-XXXL,UN2E8-90HSMD,UN2H8-5500L,UN2K8-450SMD,UN2E8-470M,UN3E5-230L,UN3E5-230LSMD,UN2K8-350L,UN2E5-2700DL,UN2H8-5500LL,UN2E5-75LL,UN3E8-800HMF,UN2E5-SMD,UN1206,UN2E8-XXXML,UN3E8-300H,UN1210,UN3E8-150H,UN2E8-350H,UN2E5-400LSMD,UN1206-200ASMD,UN2K8-800L-1,UN3E5-300LM,UN2K8-350SMD,UN2E5-2000DL,UN3E8-470H,UN2E5-400L,UN2E8-350HSMD,UN1206-350ASMD,UN2K8-300,UN2K8-XXX,UN2E5-250L,UN2E8-3000L,UN3E8-XXXH,UN2E6-470LSMD,UN2E8-600HL,UN3E5-350LM,UN3E8-800HP,UN2E8-350MSMD,UN1812-150CSMD,UN2E8-2700LL,UN3E5-90LSMD,UN3E8-250HMF,UN2H8,UN2E5-3000D,UN3E6-230MM,UN2E5-3500DL,UN3E8-350H,UN2E5-XXXLL,UN2H8-6000LL,UN3E8-150HMF,UN2E5-150L,UN1206-400ASMD,UN1210-350BSMD,UN2E8-3500L,UN3E6-600M,UN3E8-800HM,UN2E6-230LSMD,UN3E5-470LSMD,UN2E5-200LSMD,UN2K8-800SMD,UN1812,UN3E5-90LM,UN2E8-XXXM/H,UN2E5-150LL,UN1812-400CSMD+,UN2K8-350L-2,UN2K8-350-2,UN2H8-4500L,UN1210-300BSMD,UN2E8-75M,UN2E5,UN2E8-300MSMD,UN2K8-350L-1,UN3E8-250H,UN2K8-400,UN2E8-XXXHL,UN2E8-75H,UN2E8-1600LL,UN2E8,UN2E8-150HL,UN2K8-350-1,UN1206-300ASMD,UN3E5-230LM,UN2E5-3000DL,UN3E8-470HMF,UN2E8-420ML,UN3E6-90M,UN2E5-300LSMD,UN2E8-75HL,UN3E5-600LSMD,UN2K8-800-1,UN2H8-4000L,UN1210-200BSMD,UN2E5-2500D,UN2H8-XXXL,UN2K8-400L,UN2E8-250ML,UN3E8-230HP,UN3E8-230HM
5.0SMDJ 全系列瞬态抑制二极管产品变更通知单(PCN)
描述- 深圳市硕凯电子股份有限公司发布产品变更通知单(PCN),涉及5.0SMDJ系列瞬态抑制二极管。主要变更包括将包装数量从500PCS增至3000PCS,料盘大小从7英寸增至13英寸,以提高生产效率。变更不影响电性,外观上料盘大小有所变化。客户需确认接收或提出进一步确认要求。
型号- 5.0SMDJ,5.0SMDJ 系列
【选型】国产TVS瞬态抑制二极管用于POE摄像头保护电路设计,ESD等级±15kV,峰值脉冲功率1500W
针对摄像头POE交换芯片的ESD防护应用,推荐国产硕凯电子的TVS瞬态抑制二极管SMCJ51CA,双向防护,工作电压51V,最小击穿电压56.7V,反向漏电流5μA,峰值脉冲功率1500W,ESD防护等级满足IEC61000-4-2标准。
【产品】反向工作电压5V的瞬态抑制二极管SMBJ5.0A,具有超快响应时间,符合ROHS无铅认证
SLKOR推出的SMBJ5.0A是SMBJ系列瞬态抑制二极管家族中的一员。它采用玻璃钝化芯片,具有超快的响应时间和符合ROHS的无铅认证;广泛应用于家用家电、新能源汽车、通讯设备、仪表仪器、SIM卡端口、笔记本电脑等领域,为电路的稳定运行提供可靠保护。
SE05NRE14GA超低电容TVS保护
描述- 本资料介绍了SOCAY Electronics Co., Ltd.生产的SE05NRE14GA超低电容TVS保护器件。该器件适用于高速数据线瞬态保护,具有极低的电容(0.6pF)、低漏电流(0.1μA @ VRWM)和低钳位电压等特点。它支持PCI Express、Serial ATA、USB 2.0/3.0等多种接口,广泛应用于桌面电脑、服务器、笔记本电脑等领域。
型号- SE05NRE14GA
硕凯陶瓷放电管SC3E5-90LSMD、SC2E5-90LSMD及静电保护器SE03D3D01GN在4G路由器的应用
陶瓷气体放电管是一种使用气体放电产生可见光和紫外线的装置。它由外壳、电极、填充气体以及辅助电路等部分组成。陶瓷气体放电管通常用于照明、显示、激光器、电子设备等领域。它具有体积小、寿命长、发光效率高等特点,因此在现代科技发展中扮演着重要角色。本文介绍硕凯电子陶瓷放电管SC3E5-90LSMD/SC2E5-90LSMD及应用。
【技术】一文介绍TVS瞬态抑制二极管原理及应用
随着科技的不断进步,电子设备在我们日常生活和工业生产中扮演着越来越重要的角色。电子设备常常面临来自外部环境的瞬态电压冲击,如雷击、静电放电和电源电压突变等。这些瞬态电压冲击可能导致设备故障、数据丢失或损坏,因此,保护电子设备免受这些瞬态冲击的损害显得尤为重要。
【应用】硕凯电子双向TVS SMAJ12CA助力小基站天线防雷设计,可承受400W峰值脉冲功率
某种有源天线的防雷击设计,其中需要用到一款TVS(瞬态电压抑制)二极管。本文根据客户需求推荐硕凯电子推出的双向TVS SMAJ12CA,最大钳位电压为19.9V,耐受的瞬间峰值功率可达400W,耐受的反向浪涌电流达到了20.1A。
陶瓷气体放电管SC3E5-150LSMD直流击穿电压150V,浪涌通流量10kA@8/20μS,适用于开关变换器
为了避免雷电、线路故障等原因产生的浪涌电压损害开关电源或干扰后级的电子设备,需要将浪涌电压控制在一定的范围内。硕凯电子顺势推出广泛应用于保护开关变换器的陶瓷气体放电管SC3E5-150LSMD。
电子商城
品牌:硕凯电子
品类:Surfac Mount 2-Electrode Gas Discharge Tube
价格:¥0.4375
现货: 2,309
品牌:硕凯电子
品类:Surfac Mount 2-Electrode Gas Discharge Tube
价格:¥0.4375
现货: 0
品牌:硕凯电子
品类:Ultra-Low Capacitance TVS Protection Diode
价格:¥0.0900
现货: 50,100
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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>
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>
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