【应用】国产气体放电管、ESD阵列和PTC正温度系数压敏电阻组成千兆端口防护

时间： 2023-02-09 来源：世强

技术问答

客户在研发一款工业数据采集器有一颗千兆网口，需要多颗PTC、气体放电管、ESD阵列来完成设计，硕凯端口保护方案可以满足客户需求并且可以提供EMC相关方案整改。

常见千兆网口浪涌防护方案如下：

选用硕凯气体放电管SC3E5-90LSMD：

1、直流击穿电压（100V/S）：90V

2、最大脉冲击穿电压（1KV/us）：600V

3、最小绝缘电阻（at 50V）：1GΩ

4、通流量（8/20uS ±5 times）：5KA

5、最大极间电容（1MHz）：1.5pF

6、工作温度：-40°C~90°C

用硕凯ESD阵列SE05NRE14GA参数如下：

产品特点：

1、典型容值低至0.6pF；

2、反向工作电压5V，

3、反向击穿电压10V

选用硕凯PTC正温度系数压敏电阻 SCF014-1812R参数如下：

1. 最大工作电压100V；

2. I hold工作电流0.14A；

3. 最大电流100A；

产品优势：

1. 硕凯气体放电管、ESD阵列和PTC正温度系数压敏电阻可以满足客户千兆端口防护需求；

2. 硕凯原厂可以提供EMC测试以及相关整改方案；

3. 性价比高，交期短

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数据手册 - 硕凯电子 - 版本 A - 2024.6.12 PDF 中英文下载

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。

产品发布时间 : 2024-09-26

【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，不过因供货周期和价格压力，很多客户会选择一款低成本、供货周期好的替代方案，本文重点推荐硕凯电子的SC1812-90CSMD可完美替代4532-091-LF，同时体积更小，成本降低10%。

器件选型发布时间 : 2019-05-03

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

数据手册 - 硕凯电子 - Revision July 1, 2024 - July 1, 2024 PDF 英文下载

【应用】国产气体放电管UN1812-90CSMD在百兆以太网防雷方案中的应用

网络设备遭受雷击损坏后，不仅会带来较大危害，还增加了其维修成本，设计相关的防雷保护十分重要。本文讲述硕凯电子器件设计的百兆以太网防雷方案，分别推荐了UN1812-90CSMD和ESD03V32D-LC，该方案满足国际标准IEC61000-4-5( 10/700μs )第四级。

应用方案发布时间 : 2019-04-02

基于硕凯电子GDT、TVS、PTC设计的百兆网防雷、485 防雷防雷、I/O 接口防雷、电源接口防雷方案

浪涌防护的关键有两个，一个是防雷方案的设计，另一个重点就是浪涌防护器件的选择。硕凯电子作为具有十年以上防雷器件供应的电子防护专家，特意整理了一份防雷防护方案汇总，并附有相关防雷器件选型要点。

应用方案发布时间 : 2019-04-24

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

数据手册 - 硕凯电子 - Revision July 1, 2024 - July 1, 2024 PDF 英文下载

【选型】国产气体放电管pin-pin替代Brightking（君耀）2RL090M-6，成本至少降10%

为实现低成本高性能pin-pin替代BRIGHTKING（君耀）公司2RL090M-6气体放电管，推荐选用国产硕凯电子的SC2E5-90LSMD，两者电性参数基本一致，不过，国产硕凯电子的气体放电管SC2E5-90LSMD具有650V更低的最大脉冲击穿电压，响应时间更快，产品对的故障安全保护能力更强。同时，具有更小的封装体积（5.0mm x 5.0mm x 4.2mm），方形放置牢固，更容易上锡。

器件选型发布时间 : 2019-05-10

【经验】PTC自恢复保险丝工作原理及选型细节解析

使用传统保险丝或是使用最新研发的自恢复PTC都可以实现过流电路保护。两者都是通过对电路中过量电流产生的发热现象做出反应从而实现保护功能。硕凯电子将在本文介绍PTC自恢复保险丝工作原理及选型细节。

设计经验发布时间 : 2021-09-19

SC2E5 Series High Voltage 2-Electrode Gas Discharge Tube (GDT)

型号- SC2E5-1000D,SC2E5-2000DL,SC2E5-2500DL,SC2E5-XXXDL,SC2E5-1600DL,SC2E5-1600D,SC2E5-3000D,SC2E5-XXXXD,SC2E5-2700DL,SC2E5-1000DL,SC2E5-3500D,SC2E5 SERIES,SC2E5-XXXD,SC2E5-2000D,SC2E5-3000DL,SC2E5-2700D,SC2E5-3500DL,SC2E5-XXXXDL,SC2E5-2500D

数据手册 - 硕凯电子 - Revision January 4, 2019 - January 4, 2019 PDF 英文下载查看更多版本