【选型】POS机中I/O保护电路上的TVS器件选型推荐，保护内部电路免受瞬态高压影响

时间： 2019-07-22 来源：Central

技术问答

POS机，是市民日常生活中最为常见的支付方式之一。在联网的前提下，它能够准确读取信用卡/储蓄卡内的信息，并根据消费信息，与银行系统进行数据通信，来对信用卡/储蓄卡的余额进行相应的修改，并完成整个消费交易。

图1 正在刷卡的POS机

一般来说，POS机联网会有两种方式：以太网网线连接和无线连接。在图2所示Central公司的POS机解决方案中，就是选用的以太网网线连接方式。从解决方案中可以看出，以太网会和POE控制模块以及uController模块相连。为了防止POE控制模块和uController模块不会被浪涌电流和静电损坏，I/O保护电路必不可少。关于POS机的I/O保护电路上的器件选型上，Central推荐使用的是瞬态电压抑制器 TVS(C4SMAFL58A/1SMB58CA/1.5SMC68CA)，其保护电路如图3所示。

图2 Central推出的POS机解决方案

图3 TVS的I/O保护电路原理图

瞬态电压抑制器TVS(C4SMAFL58A/1SMB58CA/1.5SMC68CA)的性能优异，如峰值功耗大、漏电流小、工作温度范围广和封装尺寸小等，能够在POS机的以太网I/O保护电路中发挥关键作用。详细的电气参数如表1所示。

表1 瞬态电压抑制器TVS(C4SMAFL58A/1SMB58CA/1.5SMC68CA)的电气参数

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【选型】机顶盒的编解码器/调制解调器上的元器件MOSFET、二极管、ESD瞬态电压抑制器选型推荐

机顶盒，在家庭影视系统中主要负责是视频信号的接收与处理。其解码器/调制器能够将模拟视频信号转换成数字信号，然后在电视上放映出来。Central推出的MOSFET(CMPDM7002AG)；二极管(CMPD4150)和ESD瞬态电压抑制器(CSL05D/CMPLC1V5D/CMXTVS5-4)，性能优异，封装尺寸较小，能够应用在解码器/调制解调器中，提升机顶盒工作性能。

器件选型发布时间 : 2019-08-20

【选型】平板电脑有线传输模块中ESD瞬态电压抑制器、TVS/齐纳阵列、高速开关二极管选型推荐

平板电脑的有线数据传输模块中，Central推荐使用的元器件类型和型号分别为ESD瞬态电压抑制器(CMATVS5V0、CMOTVS5V7、CMO5V0LC、CFTVS5V0LC、CTLTVS12)；TVS/齐纳阵列(CMKTVS5-4、CMNTVS5V0)和高速开关二极管(CFD4448、CMAD4448)，有效保证数据传输的温度可靠。

器件选型发布时间 : 2019-08-17

【选型】机顶盒人机用户界面模块中的单相瞬态电压抑制器、ESD瞬态电压抑制器、TVS/齐纳阵列、低漏电二极管选型推荐

Central推荐使用单相瞬态电压抑制器(CMF5.0A thru CMF12A)；ESD瞬态电压抑制器(CSL05D，CMPLC1V5D，CMATVS3V3)；TVS/齐纳阵列(CMNTVS12V，CMXTVS5-4)和低漏电二极管(CMKD3003DO)，性能优异，能够提供长期可靠的工作性能。

器件选型发布时间 : 2019-09-01

Central Semiconductor（中央半导体）贴片式分立半导体选型指南

目录- Part Number Index Small Signal Transistors MOSFETs Bipolar Power Transistors Diodes Protection Devices Rectifiers Thyristors Multi Discrete Modules Package Mechanical Specifications

型号- CMUT3904,CMDZ10L,CMXZ9V1TO,CMZ5935B,P4SMA16A,CMUT3906,CMPZDC2V7,CMPZDC36V,CMSZ5252B,P6SMB56A,CLL4754A,CMF64A,CMR1U-04FL,CMPD2003,CMDZ10V,CMKBR-6F,CMDZ11L,CMZ5936B,CMFSH-3I,CMZ5926BP,CMPD2004,P4SMA17A,CMSZ5253B,CZT2222A,CZR1-04,5SMC100A,CMXZ7V5TO,3SMC5.0A,CLL4753A,1SMB7.5CA,CTLDM7120-M621H,CMDZ11V,CMUDW6001,1.5SMC13CA,CMUD6263E,CMDZ12L,CMSZ5250B,CMZ5933B,CMZ5939BP,P4SMA18A,CLL4752A,1SMB130A,CMHZ5229B,CMPZDC39V,CMDZ12V,1SMB9.0A,3SMC170A,1SMB51A,1SMC110A,CMDZ13L,CMZ5934B,CFSH05-20L,CMSZ5251B,CMLD6263DO,CMPD6263S,CMLT2907A,CLL4750A,CLL4751A,P6SMB170CA,CMHZ5228B,CMPD6263A,CMDZ13V,CMPD6263C,CTLDM8120-M832DS,CTLZ5V1,CMST3410,CMOZ4L7,1SMC85A,CMSH1-100M 55,CTLZ5V6,CMDZ5251B,CSL05D,CMOZ4L3,1SMB30CA,P6SMB51A,CMXTVS5V6,CMF120A,CMXSTB200,CMZ5931B,CMF60A,CMPZ5261B,CMPT404A,1SMC85CA,CMHZ5227B,CMSH1-60 55,CMPT4033,CBRHDSH1-200,CMPSH05-4,CMF8.5A,CMZ5932B,CMMR1U-08,CMMR1U-06,CMDZ5250B,P6SMB250A,BZV55C7V5,CTLTVS5V0B,CMPSH-3SE,CMPZ5260B,CMHZ5226B,CBCX68,CBCX69,1SMB54A,CFTVS5V0BULC,CTLDM8002A-M621H,1SMC100CA,CMUT5551E,P6SMB120A,CMXZ20VTO,CMPSH-3,CMPZ5263B,CMDZ4V7,P6SMB51CA,CMHZ5225B,CMDZ4V3,1SMC40A,CMR2-06MFL,CFTVS5V0LC,CMLT3474,CMZ5948BP,P6SMB8.2A,CTLSH1-40M832DS,CMOZ8V2,1SMC7.5A,3SMC12CA,CMDSH2-4L,CMPZ5262B,CMZ5930B,CMZ5913BP,CMHZ5224B,1SMC6.5CA,1.5SMC39CA,5SMC58A,CMLM2205,CMDZ5255B,1SMB78CA,CXDM4060N,C4SMAFL36A,CXDM4060P,CBRLD1-04,CZT7090LE,CMF24A,CBRLD1-02,CMHZ5223B,CMSH1-60HE 55,BZX84C9V1,CBRLD1-08,CBRLD1-06,P6SMB16A,CMJH180,CMKSH-3DO,CMLT3410,CMDZ5254B,1SMB43CA,1SMC170CA,P4SMA170A,CMUD2836,C4SMAFL100A,CMHZ5222B,CMUD2838,1.5SMC47A,1SMB150CA,P6SMB15A,CMF8.0A,CMSZDA8V2,P4SMA10A,P4SMA58A,1SMB10A,1SMC43A,CMDZ5253B,CTLSH10-60M856,1SMB58A,CMHZ5221B,CSHD5-25L,P6SMB91CA,CJD200,1.5SMC170CA,1SMB170A,CMF26A,CZT250K,P6SMB16CA,P4SMA11A,1SMB11A,1SMC150A,CMDZ5252B,CMLZDA7V5,CTLT8099-M322S,1SMC7.0A,CEDM7004VL,CMSH3-100,P6SMB13A,CJD210,CMLD2004DO,CLL4759A,1SMC54CA,P4SMA5.0A,CBRLD1-10,CMPT3906E,CSDD-12N,CMDZ5259B,CMPD2838,P4SMA12A,CMPZ4109,CMPZDA9V1,CMPZ4107,1SMB12A,5SMC54A,CMPZ4108,1SMC45A,1.5SMC220A,CMPZ4105,CMPZ4106,CMPZ4103,CMF160A,CMPZ4104,CMPZ4101,CMPZ4102,CMPD2836,CMPZ4100,CMDZ4L7,CMHZ5267B,P6SMB12A,CMLZDA3V6,CMLT6427E,CMDZ4L3,CMLZDA3V0,CMF20A,CMLTA94,CMLZDA3V3,CLL4758A,CMSH1-100,1SMB5.0A,CSDD-12M,1SMC8.5CA,CMDZ5258B,P4SMA13A,1SMB5.0CA,CMHZ4700,1SMB13A,CMR1-10M,CMPT5551E,P6SMB10A,CMHZ5266B,P6SMB11A,CLL4757A,CMPT3904E,3SMC48A,CBRSDSH2-40,P6SMB100CA,CMDZ5257B,CMR3U-02M,CMXZ4V7TO,P4SMA14A,CMHZ4710,CMHZ4711,1SMB14A,CMOZ4V7,1SMB12CA,CMPZ4123,CMPZ4124,CMPZ4121,CMLZDA43V,CMPZ4122,CMHZ5265B,CMHZ4709,CMPZ4120,CMR1U-10,CLL4756A,3SMC45A,CMF22A,CTLDM7120-M832DS,CMHZ4701,CMHZ4702,CMDZ8V2,CMHZ4703,CMHZ4704,CMKZ5261B,CMHZ4705,CTLSH1-40M621H,CMHZ4706,CMHZ4707,CMHZ4708,3SMC8.0CA,CBRSDSH2-60,CMR3U-01M,CMDZ5256B,P4SMA15A,CMPZ4118,CMPZ4119,CMUSH05-4,CZT2955,CMPZ4116,CMPZ4117,1SMB15A,CMPZ4114,1SMC48A,CMPZ4115,CMPZ4112,CMPZ4113,CMPZ4110,CMSH1-200HE 55,CMPZ4111,CMR1U-04,CMHZ5264B,CMR1U-06,P6SMB82CA,CXT591E,CLL4755A,3SMC16CA,CMXD4448,CMOZ4V3,CMR1U-02,CMR1U-01,CMXZ3V9TO,CMZ5917BP,CMHZ4712,CMHZ4713,CMHZ4714,CMHZ4715,CMHZ4716,CMHZ4717,CMUD6263SE,1SMC10CA,CMKZ5260B,3SMC60CA,CMPZ5225B,CMXZ12VTO,P6SMB47CA,CMKZ5223B,CXT5551E,CMOZ10V,BZX84C5V6,3SMC43A,P6SMB220CA,BZX84C5V1,CZT651,CLL5256B,1SMC45CA,CMLD3003DO,CMOZ11L,CMKZ5222B,CMPZ5224B,P4SMA130A,1.5SMC51A,CMPZ4099,CMSSH-3CE,CBR1-D040S,CMOZ10L,CMLTA44,CMXZ47VTO .,CLL5255B,CMSZDA4V3,CMSZDA4V7,CMZ5952BP,CMYTVS5-2,CMPZ5227B,CMDZ5249B,CMKZ5225B,5SMC64A,CMOZ12V,CTLSH15-30M364,CMSZDA11V,CMSH3-60M,CMPLC1V5,CMLZDA2V7,CMLZDA36V,CMLZDA2V4,CMOZ13V,CMXZ24VTO,CLL5254B,CMPS5064,CMOZ13L,CMDZ5248B,1.5SMC75CA,CMPZ5226B,P6SMB12CA,CMKZ5224B,CMOZ11V,CMLD6263,C4SMAFL75A,C4SMAFL150A,CMSZDA10V,1SMC58CA,3SMC120CA,CZT2000,CMSH1-40 55,1.5SMC6.8A,CMSSH-3AE,CMOZ12L,CLL5253B,CMZ5930BP,CMPSH-3AE,CZDM1003N,CMPZ5229B,CSHD6-40C,3SMC8.5A,CMOD3003,CMF17A,CMPD6001,CUD10-06,CMDZ8L2,CUD10-04,CMF16A,CMOZ15V,CMZ5369B,CLL457A,1.5SMC56A,CMOZ15L,P4SMA51A,CLL5252B,3SMC120A,CMPZ5228B,CUD10-02,C4SMAFL33A,C4SMAFL170A.,CTLSH2-40M832,CJD112,CMF15A,3SMC40A,1SMB110CA,1SMC36CA,CMUT3410,CJD117,CLL5251B,3SMC51CA,CMKZ5221B,CMXZ4V3TO,P4SMA54A,C4SMAFL30A,CMPZDA4V7,CBR1F-D040S,CMPZDA4V3,1SMB16CA,CTLSH3-30M833S,1.5SMC10A,C4SMAFL78A,3SMC85A,CJD122,P6SMB18A,CLL459A,CZT5551E,CMZ5367B,5SMC60A,CZR1-04C,CLL5250B,CJD127,1.5SMC130CA,CMXZ2V7TO,CMXZ36VTO,CMATVS5V0,CMF18A,CMXZ5V1TO,1SMC14CA,CMOZ16V,CMLZDA39V,CMZ5368B,CTLTVS5-4,CMPZDC6V2,CMOZ16L,CTLT7410-M621,CTLT5551-M832D,CMPZDA10V,CMPZDC6V8,CMZ5934BP,CMPT4401,CMSZ5248B,CMR5H-06,CMZ5365B,CMLDM7005,CMLDM7484,CMLDM7003,CMPT4403,3SMC64CA,CMPZ5265B,1.5SMC91A,CMPZDA11V,CMLT5087E,3SMC8.0A,CMSZ5249B,CMZ5366B,CSHDD16-200C,CMOZ18V,CMUT7410,CMOZ18L,P6SMB43CA,CMSZDA16V,CMPZ5264B,CMOZ9L1,CMPZDC30V,P4SMA220A,CMPZDA12V,1.5SMC22CA,CMLD6001DO,CMPSH-3CE,CMSZ5246B,CMPDM8120,CMZ5363B,P6SMB30CA,CMPZ5267B,1SMB90A,CMPZDA13V,CTLDM304P-M832DS,CMSZ5247B,CMZ5364B,CTLS5064-M532,CBR2-D080S,CMSZDA18V,P4SMA90A,CJD13003,CMPZ5266B,CMPDM303NH,CMZ5939B,CZTUX87,CMDD3003,CMXZ16VTO,CMPT5551HC,CMXD3004SR,CMKZ5227B,CMSZ5244B,CTLDM7003-M621,CMSD6263,CMZ5361B,P6SMB170A,CMP

选型指南 - CENTRAL SEMICONDUCTOR - 2020/2/28 PDF 英文下载

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为保护电压敏感器件免受因雷击和感性负载切换带来的高能瞬变损害，Central Semiconductor推出了5G双向瞬态电压抑制器CAK3-012C和CAK6-042C系列产品，采用AK封装，适用于高压5G收发应用。电压范围从12.8V至380V（3kA）和42V至240V（6kA）。

新产品发布时间 : 2021-10-22

江苏应能微电子（APM）产品介绍培训：2024年春季期

型号- DC-DC,TVS,SGT,LDO

商品及供应商介绍 - 应能微 - 2024/3/6 PDF 中文下载

SUMSEMI(世谋微)表面贴装单向和双向瞬态电压抑制器二极管选型表

SUMSEMI(世谋微)表面贴装单向和双向瞬态电压抑制器二极管选型：VRWM(V)：5.0-400，IPP(Max)(A)：0.6-65.3，IT(mA)：1-10，IR @VRWM(uA)：5-800.

产品型号	品类	VRWM(V)	IPP(Max)(A)	VBR @ IT (V)Min	VBR @ IT (V)Max	IT(mA)	IR @VRWM(uA)	VC(Max)(V)
SMBJ5.0A	表面贴装单向和双向瞬态电压抑制器二极管	5.0	65.3	6.38	7.35	10	800	9.2

选型表 - SUMSEMI 立即选型

SUMSEMI(世谋微)玻璃钝化TVS选型表

SUMSEMI(世谋微)玻璃钝化TVS选型：V(BR)(V)-min：6.45-513，V(BR)(V)-max：7.14-567，IT(mA)：1-10，VWM(V)：5.8-459，PPPM(W)：600.

选型表 - SUMSEMI 立即选型

【应用】瞬态电压抑制器SE02NJD02HA用于以太网端口，可承受超过1000次ESD打击

针对以太网端口静电防护，硕凯电子推出的SE02NJD02HA瞬态电压抑制器。其采用的是DFN2010封装，双排共8L管脚。可同时为四条数据线提供ESD保护，每个I/O引脚可以承受±8kV接触放电，超过1000次ESD打击。

应用方案发布时间 : 2022-05-08

PoE Audio Speakers Application Brief

型号- CMLDM7002AG,CBRLDSH2-100,1SMB58CA,CFTVS5V0BULC,CBRDFSH2-40,C4SMAFL58A,CMOZ5L1,CMO5V0LC,CBRHDSH2-100,CMDZ5L1,CBRDFSH3-60,CMLDM8002AG,CBRHDSH1-100,CBRDFSH1-4,CEDM7002AE,CMLT3474,CBRDFSH3-40,CMLT3820G,CBRDFSH1-100,CTLTVS5V0B,CBRDFSH2-60,CEDM8004,CBRDFSH1-6,CBRDFSH2-100,CMOZ12L

应用及方案 - CENTRAL SEMICONDUCTOR - 2019/8/13 PDF 英文下载

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器件选型发布时间 : 2019-08-24