【产品】国产硕凯电子的SM8S系列汽车级TVS管，助力12V车载系统的抛负载保护

时间： 2019-03-23 来源：硕凯电子

技术问答

车载环境中存在多种瞬间过压，这些瞬间过压有可能对电路造成永久的损坏。随着汽车电子的发展，车身中包含了各种各样的电子模块和单元。因此，在设计这些电路的过程当中，必须要保证所有的线路能够不被车载环境中的瞬间过电压损坏。

车载环境中电源电路中的瞬间过压包括：负载突降、跳变开始以及各种各样的电压噪声。其中抛负载高压是车载环境中最严重的瞬间过压，在12V车载系统中，其瞬间过压可达125V。

硕凯电子汽车级TVS管 SM8S系列有助于12V车载系统的抛负载保护。SM8S系列二极管的特性如下：

1、提供单向/双向极性

2、低正向压降和低漏电流

3、高浪涌能力

4、结钝化优化设计钝化各向异性整流技术

5、T_J= 175℃，适用于高可靠性和汽车要求

6、符合ISO7637-2浪涌规格（测试条件变化）

7、符合MSL等级1，根据J-STD-020，LF最大峰值245℃

8、AEC-Q101合格

9、符合RoHS指令2002/95/EC，符合WEEE 2002/96/EC。

在为车载电子选择电路保护器件时，往往不仅是选择一、两个合适的器件。只有针对可能出现的异常现象逐一进行分析，才能选择合适的保护方案。硕凯电子电路保护器件能够在方案中的不同的级别节点发挥关键作用，为车载电子产品的安全性和可靠性提供了很全面的保障，从而提升产品品质，降低保修、维护成本。

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本文由宝丁转载自硕凯电子，原文标题为:车载电源的抛负载危害和SM8S系列TVS管防护，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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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

选型指南 - 硕凯电子 - 2019/3/14 PDF 英文下载

SM8S & SM8E 系列TVS产品变更联络函

型号- SM8EXXXG,SM8E,SM8S 系列,SM8S,SM8SXXXG 系列,SM8EXXXG 系列,SM8E 系列,SM8SXXXG

产品变更通知及停产信息 - 硕凯电子 - 2022年10月10日 PDF 中文下载

【应用】1.5kW双向TVS管SMCJ30CA用于车载BCM控制器12V电源输入抛负载设计，满足车规级需求

为满足12V供电系统BCM车身控制器过7637-5b要求，一般在12V电源输入端口加入一款1500W SMC封装TVS管做过压防护，推荐Littelfuse的双向TVS管SMCJ30CA，最大反向工作电压30V，宽工作温度范围-65℃~150℃。

应用方案发布时间 : 2020-11-20

【应用】国产静电防护TVS管ESD05V14T-LC，USB2.0防护神器

USB2.0是应用在计算机领域的接口技术，具有传输速度快、支持热插拔的特点。USB2.0接口在应用中需要支持热插拔、传输数据过程中不能丢包，USB2.0芯片比较脆弱，易受到静电损伤。针对USB2.0静电防护，硕凯电子推出了静电防护TVS管ESD05V14-CL，具有结电容低、体积小、符合IEC61000-4-2防护标准的特点。

应用方案发布时间 : 2019-03-30

【选型】国产超低容值TVS管SE05N2C01GZ用于智能手表SD卡端口ESD防护设计，满足小型化设计

为避免智能手表SD卡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SD卡信号线加上ESD防护二极管，推荐硕凯电子ESD防护二极管SE05N2C01GZ，采用DFN0603封装，最大反向工作电压5.0V，典型结电容0.6pF，通过IEC 61000-4-2 ESD Contact ±15kV/ Air ±20kV测试，工作温度范围-55~125℃。

器件选型发布时间 : 2023-03-16