【选型】防雷保护电路中气体放电管4532-091-LF的备选方案,国产GDT气体放电管实际放电电流达3KA
在防雷保护电路中,气体放电管GDT通常应用于第一级,起泄放雷电暂态过电流和限制过电压作用。市场上有很多客户选用君耀电子的气体放电管4532-091-LF,基于疫情等多种因素,部分客户正在寻求选择一款低成本备选方案,本文重点推荐硕凯电子的SC1812-90CSMD。
硕凯电子的GDT气体放电管浪涌电流大、绝缘特性好,以下是SC1812-90CSMD和4532-091-LF电气性能参数对比:
通过以上参数对比可知,硕凯电子的气体放电管SC1812-90CSMD电气性能参数与君耀电子4532-091-LF基本一致,但实际放电电流可达3KA,高于4532-091-LF,具有承受更大的冲击放电电流的能力。两者封装尺寸类似,具体如下图:
图:SC1812-90CSMD封装(左)4532-091-LF封装(右)
通过上图对比可知,硕凯电子的气体放电管SC1812-90CSMD尺寸更小,可以节省PCB面积,只需要在4532-091-LF焊盘基础上略微修改即可。
除了上面介绍的放电电流方面的技术优势,硕凯电子的气体放电管SC1812-90CSMD还具有以下优势:相比君耀电子的4532-091-LF至少可降低10%,是雷击防护电路GDT的优质选择。
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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
【应用】硕凯电子690V气体放电管和ESD防护二极管用于百兆网口,可以提供EMC测试和整改方案
汽车视频监控单元会用有一颗百兆网口,网口需要进行静电及浪涌防护,需求两颗ESD二极管和一颗气体放电管完成线路,硕凯可以提供浪涌防护方案并且可以为客户进行整改。
应用方案 发布时间 : 2022-12-24
【应用】采用两级设计、基于MOV、GDT和TVS的直流电源防雷方案
浪涌电压会严重危害电子系统的安全工作,在电子线路中通常采用浪涌保护抑制器件来对电路进行保护。本文介绍的是一款直流电源防雷电子电路设计图,该电路采用常规的两级设计方式,第一级用来吸收较大的浪涌,后级采用TVS来对残压进一步的吸收;第一与第二级之间采用电感进行退耦,起到延时的作用,这样可以保证MOV可以比TVS先动作。
应用方案 发布时间 : 2019-04-03
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
【应用】国产气体放电管(GDT)SC1812-90CSMD助力射频接口防护,结电容低至1pF
由于射频天线传输距离远,通常暴露于户外,因此极易因为雷击等原因引入过电压。在有强烈的浪涌能量出现时,造成信号误差、失真,甚至可以看到线路板焦糊的现象。因此防雷击保护成为 射频RF必须要考虑的。本文介绍基于硕凯气体放电管GDT SC1812-90CSMD的射频接口防护。
应用方案 发布时间 : 2019-05-30
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
【产品】国产工业级小体积陶瓷气体放电管,浪涌通流高达2KA,极间电容小于1pF
硕凯电子推出的一款陶瓷气体放电管(GDT)SC1812-90CSMD,陶瓷管体采用方形设计,提供了高可靠性和高浪涌通流,其方形设计更方便SMT作业。符合RoHS标准,封装尺寸小,适用于电路板空间有限的应用。
产品 发布时间 : 2022-04-01
SC2E5-SMD Series Surface Mount 2-Electrode Gas Discharge Tube (GDT)
型号- SC2E5-90LSMD,SC2E5-XXXLSMD,SC2E5-230LSMD,SC2E5-150LSMD,SC2E5-470LSMD,SC2E5-350LSMD,SC2E5-300LSMD,SC2E5-600LSMD,SC2E5-420LSMD,SC2E5-200LSMD,SC2E5-SMD SERIES
SC2E5 Series 2-Electrode Gas Discharge Tube (GDT)
型号- SC2E5,SC2E5-420LL,SC2E5-75L,SC2E5-250LL,SC2E5-800L,SC2E5-230LL,SC2E5 SERIES,SC2E5-420L,SC2E5-300LI,SC2E5-600L,SC2E5-90LL,SC2E5-800LI,SC2E5-250L,SC2E5-230L,SC2E5-150LL,SC2E5-XXXLL,SC2E5-470L,SC2E5-75LL,SC2E5-470LL,SC2E5-600LL,SC2E5-90L,SC2E5-300L,SC2E5-150L,SC2E5-350LI,SC2E5-XXXL,SC2E5-350L
SC1206 Series Surface Mount 2-Electrode Gas Discharge Tube (GDT)
型号- SC1206-420ASMD,SC1206-XXXASMD,SC1206-230ASMD,SC1206-470ASMD,1206 SERIES,SC1206-200ASMD,1206,SC1206-150ASMD,SC1206-300ASMD,SC1206 SERIES,SC1206-350ASMD,SC1206,SC1206-400ASMD
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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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