【应用】国产TVS SMAJ5.0A用于气体报警器MCU通讯端口,ESD等级达±15kV,工作电压5V
当工业或家用环境中可燃或有毒气体泄露,气体报警器检测到气体浓度达到临界点时,报警器就会发出报警信号。其控制核心器件是MCU,通讯端口容易受到静电或浪涌电压影响导致损坏,因此需要增加ESD防护器件。
针对气体报警器MCU通讯端口的ESD防护应用,推荐国产硕凯电子的TVS(瞬态抑制二极管)SMAJ5.0A,单向防护,工作电压5V,最小击穿电压6.4V,反向漏电流800μA,峰值脉冲功率400W,ESD防护等级满足IEC61000-4-2标准±15kV(空气放电)/±8kV(接触放电),以下是SMAJ5.0A的主要电气参数:
1、气体报警器的主控MCU多采用5V供电,SMAJ5.0A的工作电压5V,根据IEC61000-4-2标准,可以提供±15kV(空气放电)/±8kV(接触放电)的ESD保护,能够承受400W(10/1000us、占空比0.01%)的峰值脉冲功率,完全满足气体报警器中主控MCU通讯端口ESD防护应用需求。
2、气体报警器产品比较小,对内部器件尺寸要求严格,SMAJ5.0A采用标准DO-214AC贴片封装,尺寸3.95*2.35*1.98mm,可以节省PCB面积,提高空间利用率。
3、气体报警器属于安全相关的产品,对环保和阻燃要求严格,瞬态抑制二极管SMAJ5.0A符合RoHS和无卤标准,同时满足UL 94V0阻燃等级,符合产品的绿色环保要求,以下是SMAJ5.0A的实物图。
图1 SMAJ5.0A实物图
综上所述,硕凯电子的TVS瞬态抑制二极管SMAJ5.0A具有防静电能力±15kV(接触放电)/±8kV(空气放电)、符合RoHS标准、小尺寸封装的特性,是气体报警器等工业产品MCU通讯端口保护电路的优秀解决方案。
- |
- +1 赞 0
- 收藏
- 评论 0
本文由北冥之鲲提供,版权归世强硬创平台所有,非经授权,任何媒体、网站或个人不得转载,授权转载时须注明“来源:世强硬创平台”。
相关研发服务和供应服务
相关推荐
【应用】瞬态抑制二极管SMDJ36CA用于中小型数据机房UPS,提供二级抑制峰值保护
UPS使用过程中会发生STS切换、UPS维护旁路合闸、用户电路带电负荷启动、短路等操作。感性负荷切断时,磁场瞬态崩溃,在负载电路中,产生瞬态高压,造成UPS及数据机房损坏,可使用瞬态抑制二极管作为二级抑制峰值保护。硕凯电子顺势推出瞬态抑制二极管SMDJ36CA。
【应用】硕凯电子双向TVS SMAJ12CA助力小基站天线防雷设计,可承受400W峰值脉冲功率
某种有源天线的防雷击设计,其中需要用到一款TVS(瞬态电压抑制)二极管。本文根据客户需求推荐硕凯电子推出的双向TVS SMAJ12CA,最大钳位电压为19.9V,耐受的瞬间峰值功率可达400W,耐受的反向浪涌电流达到了20.1A。
【应用】6.5V反向关态电压的TVS SMBJ6.5A用于运放输入保护,具有高效能、响应速度快等优势
在设计电子产品时,需要设计相应的静电及浪涌防护电路,尤其是在产品的输入输出接口处防护器件必不可少。本文以一款传感器前端信号处理电路的输入防护为例,讲解电路的防护设计,选取的保护器件是硕凯电子的TVS—SMBJ6.5A,静电防护等级符合IEC-61000-4-2 空气放电15kV、接触放电 8kV,防护效果较好。
硕凯电子 瞬态抑制二极管选型表
TVS(瞬态抑制二极管),半导体材质,用于浪涌和静电防护,在小浪涌防护中广泛使用,速度快,封装小,残压低
产品型号
|
品类
|
Uni/Bi
|
Marking
|
VRWM(V)
|
VBR(V)@IT(Min.)
|
VBR(V)@IT(Max.)
|
IT(mA)
|
VC@IPP(V)
|
IPP(A)
|
IR@VRWM(uA)
|
PPPM(W)
|
Package
|
SMF5.0A
|
瞬态抑制二极管
|
Uni
|
FE
|
5V
|
6.4V
|
7V
|
10mA
|
9.2V
|
21.74A
|
400uA
|
200W
|
SOD-123
|
选型表 - 硕凯电子 立即选型
【选型】国产TVS瞬态抑制二极管用于POE摄像头保护电路设计,ESD等级±15kV,峰值脉冲功率1500W
针对摄像头POE交换芯片的ESD防护应用,推荐国产硕凯电子的TVS瞬态抑制二极管SMCJ51CA,双向防护,工作电压51V,最小击穿电压56.7V,反向漏电流5μA,峰值脉冲功率1500W,ESD防护等级满足IEC61000-4-2标准。
车载24V系统过ISO 16750-2 Test B (174V 52V 8Ω 350ms 10c) 和IEC61000-4-5 1.2/50us&8/20us(2kV ±5c)使用什么型号的TVS合适?
推荐使用硕凯的瞬态抑制二极管SM2KBF40CA,其主要特点: 1.电压范围从6.5V~40V。 2.能过ISO 16750-2 Test B (174V 52V 8Ω 350ms 10c)。 3.能过1.2/50us&8/20us组合波2KV/1KA。 4.钳位电压低。 5.反向漏电流小。
【经验】如何区分瞬态抑制二极管的方向
TVS二极管在测试前要先区分其单双向。虽然最终的作用是一样的,但是单双向TVS二极管的适用范围还是有差别的,双向TVS管适用于交流电路,单向TVS管一般用于直流电路。本文的目的是教大家如何区分瞬态抑制二极管的方向。
【视频】硕凯TVS管SMA至DO-218AB封装适配7637车载浪涌5A和5B全套解决方案|世强硬创新产品在线研讨会
在世强硬创新产品在线研讨会——国产汽车电子专场中,硕凯电子技术专家为我们做了演讲。传统TVS现已不能满足大部分客户的需求,为了满足更高了ISO7637-2的测试等级,硕凯特推出7637车载浪涌5A和5B全套解决方案,封装更全面,体积更小巧,性能更稳定,方案更成熟,能解决各种车载浪涌场合的实际防护问题,可以提高客户产品的使用寿命和防护等级!
硕凯电子SM2KBF系列TVS参数详解及防护应用
硕凯电子推出的SM2KBF系列TVS是专用于低压直流电源的浪涌防护器件, 该器件采用的是SMBF小封装,相对同封装体积的普通系列TVS功率大能做到更大,双向无极性区分,综合防护能力要比同体积产品高得多,可有效降低设计成本。
单向TVS和双向TVS有什么区别?
单向TVS管的正向特性与普通稳压二极管相同,反向击为典型的PN结雪崩,双向TVS管的V-I特性曲线是两只单向TVS“背靠背”组合,其正反两个方向都具有相同的雪崩击穿特性和箝位特性。推荐硕凯(SOCAY)的单向TVS和双向TVS,响应速度为<1ps级,击穿电压有从6.8V~550V, 钳制电压比较准确,误差±5%;具体见选型手册: https://www.sekorm.com/doc/1173258.html
基于硕凯TVS SMBJ24CA的车载LED电源静电整改案例分析
本文介绍车载LED电源静电整改分析。对于弱电产品有金属外壳的产品最好是把外壳接到PCB的工作地,或者PCB有大地的外壳接到PCB的大地。对于主IC不能承受很大的工作电压时选用TVS尽量选用钳位电压低的,比如SMBJ24CA。
硕凯电子(Socay)TVS瞬态抑制二极管选型指南
目录- Surface Mount Transient Voltage Suppressors(TVS) Axial/Radial Lead Transient Voltage Suppressors (TVS) Dual Programmable Transient Voltage Suppressor(TVS)
型号- 5.0SMDJ170C,P4SMA16A,SMAJ6.0CA,SMAJ40CA,30KPA170CA,SMF10CA,KD-012,5.0SMDJ170A,8.0SMDJ24A,SMDJ78CA,KD-015,5.0SMDJ15,5.0SMDJ14,KD-025,5.0SMDJ13,5.0SMDJ12,5.0SMDJ19,KD-020,5.0SMDJ18,5.0SMDJ17,5.0SMDJ16,5.0SMDJ300CA,1.5SMC13CA,5.0SMDJ11,SMCJ14CA,P4SMA18A,SMDJ58C,K,5.0SMDJ85C,5.0SMDJ85A,P4SMA16CA,SMCJ100CA,P6KE68C,20KPA48CA,5KP30C,SMBJ300A,5KP30A,SMBJ150CA,SMF120CA,8.0SMDJ26A,SMDJ170A,SMAJ70A,P4SMA520A,SMAJ70C,SMDJ170C,3KP80CA,SMDJ58A,SMCJ30C,SA48CA,SMCJ30A,SA180C,1.5KE500,SA180A,SMAJ7.0,SMAJ7.5,SA22CA,SMAJ100C,P6KE8.2CA,SMAJ100A,P4KE180A,5.0SMDJ170CA,P4KE180C,SA110CA,30KPA54CA,P4SMA82CA,SMDJ54A,1.5KE520,30KPA198A,SMDJ160CA,20KPA180A,3KP14CA,SMBJ400CA,SMDJ54C,SMF36CA,SMCJ80CA,P6SMB51CA,P4KE22CA,8.0SMDJ22A,SMCJ220CA,15KPA40CA,5.0SMDJ80A,5.0SMDJ80C,1.5KE51A,1.5SMC39CA,1.5KE51C,P6SMB,1.5KE36CA,SA70CA,5KP36C,15KPA100A,5KP36A,1.5KE550,P6SMB16A,30KPA,SMAJ18CA,SA17CA,1.5KE170CA,5KP90CA,SMDJ51C,SMF,SMDJ51A,3KP140CA,3KP45CA,P4SMA170A,P6SMB15A,P4SMA10A,3KP58CA,1.5KE56A,1.5SMC440A,LCE64A,P6SMB520A,SA5.0CA,1.5KE56C,5KP24CA,P6SMB16CA,P4SMA11A,P6KE500C,P6KE500A,SMBJ90C,SMBJ90A,SMF64A,SMBJ12CA,P6SMB13A,SMBJ5.0A,P4SMA12A,SMBJ5.0C,LCE6.5,P6SMB12A,SMBJ9.0,P4SMA13A,P6KE180CA,P6SMB10A,P4SMA47CA,P6SMB11A,KA-190,SMDJ5.0,P6SMB100CA,5.0SMDJ78CA,15KPA18CA,P4KE400A,P4KE400C,1.5KE10CA,LCE60A,SMF60A,P4SMA15A,15KPA30A,30KPA84A,P6KE27CA,5KP33A,P6SMB82CA,15KPA180CA,1.5SMC500CA,5KP11CA,30KPA36CA,5KP33C,20KPA52CA,P4KE6.8CA,P4KE6.8C,P6SMB47CA,1.5SMC250CA,P6SMB220CA,3KP140C,3KP140A,P4KE220,SA9.0,SMDJ200CA,3KP64C,SMDJ190CA,SMF70A,15KPA24A,30KPA90A,1.5KE380CA,3KP64A,P6KE7.5,P4KE20C,P4KE20A,SMAJ48CA,SMBJ43CA,SMCJ7.5C,SMCJ7.5A,SMAJ400A,30KPA71CA,SMBJ180,SMF19CA,LCE7.0,SA90A,SA90C,LCE7.5,30KPA102A,SMBJ18C,SMBJ18A,P4KE200,1.5SMC75CA,SMAJ300CA,P6KE220CA,SA40CA,SMBJ190,15KPA22A,SMBJ19C,KA-170,SMBJ19A,20KPA96CA,SMBJ160,SMDJ90,3KP9.0CA,SA100C,S61089,SMBJ16C,P6KE100CA,SMBJ16A,20KPA240CA,5KP28C,SMBJ30CA,5KP28A,30KPA108A,SMDJ85,SMBJ170,SMF110A,SMDJ80,15KPA28A,SMAJ180C,SMAJ8.5CA,SMAJ180A,P4KE100A,P4KE100C,SMBJ17C,SMBJ17A,SMF85CA,5.0SMDJ220A,SMBJ120CA,SMDJ78,SMDJ75,20KPA120CA,5KP8.0C,SMBJ140,SMDJ70,5KP8.0A,1.5SMC10A,3KP75CA,SMBJ14C,SMBJ14A,SM8S,P6SMB18A,SMDJ16CA,SMBJ130C,SMBJ130A,1.5SMC130CA,5.0SMDJ350A,SMDJ64,15KPA26A,15KPA48CA,SMDJ440CA,SMBJ150,SMDJ60,5KP120CA,SMBJ15C,SA100A,SMBJ15A,SMAJ170CA,SMDJ58,KA-133,SMDJ54,P6KE75,SMBJ120,SMDJ51,5.0SMDJ80,15KPA180A,30KPA260CA,SMBJ11C,SMBJ12A,SMAJ6.0A,P6KE62CA,SMAJ6.0C,SMDJ48,P6KE68,SMDJ45,5.0SMDJ85,1.5SMC91A,SMDJ43,SMBJ130,SA7.5CA,SMDJ40,5.0SMDJ90,P6KE82,5.0SMDJ78C,SMCJ7.0C,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,15KPA22CA,SMBJ12C,5.0SMDJ48CA,SMBJ13C,SMBJ13A,P6KE75A,SMDJ36,P6KE75C,SMDJ33,P4SMA220A,SMBJ100,SMDJ30,SMCJ150C,KB-380,P6KE91,SMCJ150A,20KPA172A,P4KE27C,SA6.0C,SA6.0A,SMDJ28,5KP8.5C,5.0SMDJ60,SMDJ26,5KP8.5A,SMAJ78A,SMDJ24,5.0SMDJ64,KA-100,SMAJ78C,SMDJ22,SMBJ110,SMDJ20,5KP120A,5KP120C,SMBJ10C,SMBJ10A,SMBJ11A,P4KE27A,5.0SMDJ400A,5.0SMDJ78,SMAJ22CA,SMDJ19,SMDJ18,SMDJ17,SMDJ16,5.0SMDJ70,8.0SMDJ22CA,SMCJ6.5CA,SMDJ15,SMDJ14,SMDJ13,5.0SMDJ75,SMDJ12,SMDJ11,SMAJ75A,SMDJ10,SMCJ36A,SMAJ75C,P6KE30,SMCJ36C,SA190CA,5.0SMDJ75C,5.0SMDJ75A,5.0SMDJ48,P4SMA9.1A,5.0SMDJ45,SMF54CA,5.0SMDJ40,P4SMA91A,1.5KE100A,P6KE27,P6SMB170A,1.5KE100C,5.0SMDJ43,P6KE24,P6KE22,P4KE250,P6KE43,SMCJ45CA,3KP60A,30KPA84CA,P4KE24C,P6KE75CA,P4KE24A,5.0SMDJ58,SMAJ6.5C,5.0SMDJ51,P6KE39,3KP60C,P6KE36,5.0SMDJ54,SMAJ6.5A,SMBJ440A,P6KE33,SMCJ58CA,P6KE51,SMDJ7.5CA,5.0SMDJ17CA,1.5KE18CA,5.0SMDJ26,5.0SMDJ24,5KP60CA,5.0SMDJ28,5.0SMDJ70CA,5.0SMDJ22,SMCJ33A,P6KE47,5.0SMDJ20,SMCJ33C,P4SMA350A,P6KE62,3KP6.5,P4KE22C,P4KE22A,3KP6.0,P4SMA6.8CA,5.0SMDJ36,SA6.5C,5.0SMDJ33,P4KE6.8A,SA6.5A,P6KE56,5.0SMDJ30,5.0SMDJ33CA,SMAJ60,SA36CA,SMBJ,1.5KE6.8,SMDJ20CA,SMF6.0A,P4SMA15CA,LCE58A,SMAJ58,SMAJ54,3KP6.0CA,SMAJ51,SMDJ160A,3KP26CA,SMAJ60A,SMAJ,SMAJ60C,SMDJ160C,5.0SMDJ70C,5.0SMDJ70A,SMDJ48C,SMDJ48A,SMF22CA,SMCJ20C,SMAJ45,SMCJ7.0CA,SMAJ48,SMCJ20A,P4KE36CA,SMAJ43,SMAJ40,P6KE200A,SMDJ,20KPA36CA,SMBJ85C,SMBJ85A,1.5KE600,1.5KE380A,P4KE9.1,1.5KE380C,P4KE120CA,SMAJ6.0,P4SMA400CA,SMAJ6.5,SMAJ36,P6KE200C,SMAJ30,SMAJ33,SMF180A,SMCJ,SMDJ45C,SMDJ33CA,SMDJ45A,1.5SMC8.2CA,SMAJ28,SMAJ24,SMAJ26,SMAJ20,SMAJ22,SMCJ13CA,SMDJ64CA,3KP13CA,5KP180CA,SMAJ17,LCE54A,SMAJ16,SMAJ19,SMAJ18,SMAJ13,SMAJ12,1.5KE62A,20KPA26A,SMAJ15,SMAJ14,SMAJ11,20KPA104CA,SMAJ10,1.5KE62C,SMCJ26CA,SA75A,20KPA24A,SA75C,1.5SMC91CA,SMDJ43A,SMDJ43C,1.5SMC180CA,1.5KE250C,20KPA300CA,1.5KE250A,1.5KE8.2C,SA78A,SA190C,SA78C,P4SMA200A,SMAJ85CA,SA190A,1.5KE8.2A,20KPA192A,1.5SMC300A,P6SMB180CA,P4SMA150CA,SMBJ90CA,20KPA28A,SMAJ110C,SMAJ110A,30KPA66CA,SMF6.0CA,P6SMB7.5A,5KP15,5KP16,5KP13,SMF48CA,5KP14,5KP11,5KP12,5KP10,P4KE10CA,P4KE18CA,1.5KE350CA,SMDJ40C,SMDJ40A,5KP24C,5KP24A,1.5SMC12A,SMAJ140CA,30KPA48CA,20KPA20A,SMBJ80C,1.5SMC11A,SMBJ80A,15KPA40A,1.5KE24CA,SMF78A,SMDJ110CA,P6SMB27A,LCE51A,1.5KE600C,1.5KE68C,P6KE500CA,1.5KE600A,1.5KE68A,SMBJ24CA,20KPA104A,SMBJ8.5,5KP26C,5KP26A,SMBJ8.0,SA18CA,SMAJ19CA,5.0SMDJ64CA,15KPA220A,1.5SMC13A,P6SMB8.2CA,15KPA17CA,SMF75A,1.5KE11CA,30KPA180A,15KPA43A,P6KE15CA,P6SMB24A,1.5SMC16A,SMCJ440A,15KPA70CA,5KP20C,5KP20A,1.5KE68CA
硕凯电子TPSMEJ24CA车规级TVS专用于汽车中,击穿电压26.7~29.5V,功率5000W
每当我们打开车门的时候,产品LED灯会亮,迎宾灯夜间开门十分耀眼,看的见路况,安全时尚。但是在汽车中由于电源和负载断开时或电流突然中断等瞬态现象层出不穷,所以真正要适用在汽车上还要通过ISO7637-2标准,该标准规定了各种瞬态现象的波形和电压等级。硕凯电子研发的TPSMEJ24CA就是专门用在汽车上的车规级TVS。
电子商城
品牌:硕凯电子
品类:Surface Mount Transient Voltage Suppressors
价格:¥0.1500
现货: 70,470
现货市场
服务
提供稳态、瞬态、热传导、对流散热、热辐射、热接触、和液冷等热仿真分析,通过FloTHERM软件帮助工程师在产品设计初期创建虚拟模型,对多种系统设计方案进行评估,识别潜在散热风险。
实验室地址: 深圳 提交需求>
提供全面表征产品器件耗电特征及功耗波形、快速瞬态效应、电源优化、表征和仿真测试服务,使用直流电源分析仪测量精度达50µV,8nA,波形发生器带宽100kHz,输出功率300W,示波器200kHz,512 kpts
实验室地址: 深圳/苏州 提交需求>
登录 | 立即注册
提交评论