【选型】国产TVS阵列助力大无创呼吸机USB2.0端口ESD防护,典型结电容仅0.75pF
为避免大无创呼吸机USB2.0端口因热插拔或人体接触放电影响导致相关敏感电子元件被打死,通常需要给USB2.0端口电源及数据线上加抗ESD防护器件,建议选择低容值TVS阵列设计,选型因素参考如下:
1、小体积:为满足大无创呼吸机小型化设计需求,尽量选择小尺寸TVS阵列;
2、高抗ESD能力:符合IEC 61000-4-2(ESD),4级(±15kV空气,±8kV接触放电);
3、低钳位电压
针对如上设计需求,推荐硕凯电子TVS阵列SE05T1D12GZ,采用SOT-143封装,最大反向工作电压5V,接触放电能力达±8kV,空气放电能力±15kV,工作温度范围-55~150℃,典型电性参数参考如下图1所示。
图1:硕凯电子TVS阵列SE05T1D12GZ典型电性参数
推荐硕凯电子TVS阵列SE05T1D12GZ理由如下:
1、典型结电容低至0.75pF(max. 0.9pF),低的结电容值对高速传输的数据信号影响更低,避免出现传输数据错误或数据丢包等;
2、采用SOT-143小尺寸封装,最大封装尺寸3.04x2.64mm,有助于小型化设计;
3、市面上有成熟的应该,产品性能得到验证,具有高可靠性;
4、世强平台常备库存,具有良好的供货交期,可以快速支持样品和量产服务。
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【选型】国产表面贴装式ESD静电保护器件SE05T1D12GZ与JEU05UCR对比分析
USB,是通用串行总线的缩写,是一个外部总线标准,用于 规范电脑与外部设备的连接和通讯。是应用在PC领域的接口技术。 本文针对用于USB静电防护的器件,对比国产硕凯电子表面贴装式ESD静电保护器件SE05T1D12GZ与友商JEU05UCR。
【选型】国产TVS阵列用于高速公路ETC系统HDMI接口ESD防护设计,典型容值低至0.6pF
高速公路ETC系统上会配有标准的HDMI接口,为避免其接口因静电影响造成传输的数据丢失或相关敏感电子器件被打死,可选择多通道低容值TVS阵列设计,推荐硕凯电子四通道TVS阵列SE05NRE14GA,典型I/O对地电容低至0.6pF,最大反向工作电压5.0V。
【选型】车载激光雷达千兆以太网防护选2极GDT气体放电管UN1812-150CSMD四通道TVS阵列SP2555NUTG
为车载激光雷达千兆以太网实现防雷保护,推荐选择硕凯电子的GDT气体放电管UN1812-150CSMD + LITTELFUSE四通道TVS阵列SP2555NUTG,可以实现共模4kV,差模0.5kV防雷保护设计。
【选型】硕凯电子(Socay)电路保护器件(GDT/TVS/ESD/TSS/MOV/MLV/PPTC/SPG)选型指南
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【应用】使用硕凯电子的TVS和ESD二极管,设计USB Type-C接口静电防护方案
针对Type-C接口的静电防护需求及实际电路环境,硕凯电子设计了静电防护方案,在Type-C接口的电源部分,用一颗大通流的TVS对地做浪涌和静电防护;信号部分用了阵列式ESD,体积小,节约PCB空间,便于设计;采用低容值ESD器件,满足高速传输要求。
硕凯电子(Socay)高分子ESD(PESD)选型指南
目录- Surface Mount Polymer ESD Suppressors ESD Array
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硕凯的SM712可pin-pin替代littelfuse(力特)SM712-02HTG的专用于RS485双数据线保护的TVS阵列,在性能参数上littelfuse(力特)的SM712-02HTG略胜一筹,但硕凯的SM712在性能可以满足RS485防护的同时,价格更具优势。
【选型】国产TVS阵列SR05-4B用于无线振动传感器SIM卡端口ESD防护设计,最大容值仅0.8pF
为避免无线振动传感器SIM卡端口因热插拔或人体接触产生静电ESD导致SIM卡相关敏感电子器件无法正常工作,一般需要对SIM卡端口做静电防护设计,推荐硕凯电子TVS阵列SR05-4B,最大结电容0.8pF。
【选型】国产TVS阵列可替代TI的TPD2E009DBZR用于空气质量PM2.5检测器USB信号线静电防护
室外空气质量PM2.5检测器USB信号线D+/D-做ESD防护时,市面上有选用TI的TPD2E009DBZR做ESD防护,不过因交期和成本压力,推荐国产硕凯电子的TVS阵列SE05T2D12HC替代,具有0.4pF更低的容值,可提供±15kV更高空气放电ESD保护能力,-55℃~150℃更宽工作温度范围。
【选型】NB-IOT水表SIM卡端口ESD防护设计推荐5通道TVS阵列SE05T5D15GA,典型结电容低至0.6pF
为避免NB-IOT水表SIM卡端口因热插拔和人体接触造成的ESD振击导致相关的电子器件被打死,一般需要通过TVS阵列对SIM卡端口做ESD防护,本文推荐选择硕凯电子的TVS阵列SE05T5D15GA,是一款低电容瞬态抑制器,典型结电容低至0.6pF,采用SOT-563封装,最大反向工作电压5V,最小击穿电压6V,最大反向漏电流1μA,最大钳位电压9.8V@ IPP=1A。
【应用】国产TVS阵列SR05-4B用于八轴运动控制卡USB2.0端口ESD防护,典型结电容0.6pF
八轴运动控制卡一般配有USB2.0接口用于系统升级和文件传输,为避免USB2.0接口因热插拔或人体接触放电影响导致相关敏感电子元件被打死,本文推荐硕凯电子TVS阵列SR05-4B,采用SOT-26封装,可用于双USB2.0端口防护,最大反向工作电压5V,接触放电能力达±8kV,空气放电能力±15kV。
【选型】SOT143封装三通道TVS阵列SE05T1D12GE助力温湿度记录仪USB2.0端口电源及数据线ESD防护设计
为避免温湿度记录仪USB2.0端口因热插拔和人体接触造成的ESD振击导致相关的电子器件被打死,一般需要对USB端口数据信号线USB+/USB-、VCC电源供电加入TVS管做ESD防护,推荐硕凯电子的TVS管SE05T1D12GE,典型结电容低至0.8pF,采用SOT-143封装,最大反向工作电压5V,通过IEC 61000-4-2 ±25kV Contact/±30kV Air ESD认证标准。
电子商城
品牌:硕凯电子
品类:Bi-directional Ultra Low Capacitance TVS Array
价格:¥0.1250
现货: 200
品牌:硕凯电子
品类:Bi-directional Ultra Low Capacitance TVS Array
价格:¥0.1500
现货: 20
服务
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>
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>
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