【选型】如何巧妙选择瞬态电压抑制二极管,改善CAN端口的BCI抗扰能力

2018-10-17 世强
TVS,瞬态电压抑制二极管,SM24CANB-02HTG,PESD1CAN TVS,瞬态电压抑制二极管,SM24CANB-02HTG,PESD1CAN TVS,瞬态电压抑制二极管,SM24CANB-02HTG,PESD1CAN TVS,瞬态电压抑制二极管,SM24CANB-02HTG,PESD1CAN

瞬态电压抑制二极管TVS)是一种抑制有害高压脉冲的小型器件,当它的两端经受瞬间的高压冲击时,能以亚纳秒的速度把其自身两端间的阻抗值由高阻抗变为低阻抗,以吸收一个瞬间大电流到大地,从而把它的两端电压箝制在一个预定的数值上,以保护后面的电路免受瞬态高压尖峰脉冲的冲击。


不同的TVS适用于不同电路,甚至不同的TVS适用于卖给不同客户的相同电路(原因是不同的客户对可靠性的要求不同),因此TVS的选型对电路设计者来说至关重要,本文通过一款汽车音响(客户为通用汽车)CAN电路设计案例来对此进行说明。


这款车载音响产品中CAN总线的接口电路如下,图1的左侧为接口,右侧为CAN网络芯片,用于和外部的产品进行CAN消息的处理和收发。图中红圈位置是NXP的双通道TVS,型号为NXP推出的PESD1CAN,它靠近接口放置以便高压脉冲能量能通过它自身就近快速的释放到产品主板的地;CAN通讯差分线上的两颗电容作用有两个,一是辅助TVS抑制外部进来的高压脉冲,二是抑制CAN芯片对外的辐射噪声。


1    CAN电路图


当使用PESD1CAN的TVS时,上图的CAN电路,在进行大电流注入(BCI)测试时,CAN消息会有错误帧和通讯中断这两种情况出现,BCI测试停止时通讯自动恢复,测试失败。


这里有必要解释一下BCI测试方法,BCI的测法是把干扰电流通过耦合夹耦合到产品的线缆上(CAN线属于车载音响的线缆之一),因走线有阻抗,当沿着线缆进入产品内部时就形成了高压脉冲对形成干扰,通用的BCI法规如图2所示。


2  通用汽车BCI法规


经过仔细分析后,笔者换上LITTELFUSE的瞬态电压抑制二极管(TVS)产品SM24CANB-02HTG重新进行测试,结果如预期那样,可以通过通用汽车BCI测试,CAN总线不再出现错误帧和通讯中断现象,也没有其它功能性能异常情况,测试顺利通过。为了避免个体差异现象,我们又拿了两台样机都换上SM24CANB-02HTG,也无一例外的通过了通用汽车BCI测试。


SM24CANB-02HTG外形与内部电路图


为何会有这样的不同结果?我们来对比下两者的参数:


4  TVS参数对比


通过对比我们发现,两种TVS的最大反向工作电压一样,差异点主要有三点:

(1)    峰值电流:PESD1CAN的峰值电流只有3A,而Littelfuse的这款SM24CANB-02HTG则高达10A,可以释放更大的噪声电流从而更好的稳定电压;

(2)    ESD等级:SM24CANB-02HTGESD等级高达±30KV,远远高于PESD1CAN的±23KV,意味着SM24CANB-02HTG抑制噪声的能力更强,其抵抗BCI的能力也更强

(3)    钳位电压:PESD1CAN的钳位电压40V,而Littelfuse的这款TVS产品钳位电压是34V,在更低的电压就可以钳位。


通过以上三点对比可以很清楚的看到,Littelfuse的这款TVS产品SM24CANB-02HTG,在BCI抗扰方面具有更好的优势,是车载音响CAN线路BCI保护的首选器件。

授权代理商:世强先进(深圳)科技股份有限公司
技术资料,数据手册,3D模型库,原理图,PCB封装文件,选型指南来源平台:世强硬创平台www.sekorm.com
现货商城,价格查询,交期查询,订货,现货采购,在线购买,样品申请渠道:世强硬创平台电子商城www.sekorm.com/supply/
概念,方案,设计,选型,BOM优化,FAE技术支持,样品,加工定制,测试,量产供应服务提供:世强硬创平台www.sekorm.com
集成电路,电子元件,电子材料,电气自动化,电机,仪器全品类供应:世强硬创平台www.sekorm.com
  • +1 赞 0
  • 收藏
  • 评论 247

本文由清风提供,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”。

评论

   |   

提交评论

全部评论(247

  • guyepiao Lv5. 技术专家 2019-01-23
    非常好
  • Division Lv6. 高级专家 2019-01-22
    学习了
  • Timm Lv9. 科学家 2019-01-21
    瞬态电压抑制二极管的选择
  • work Lv6. 高级专家 2019-01-19
    学过
  • 海中浪 Lv4 2019-01-16
    学习
  • 小马过河 Lv3. 高级工程师 2019-01-16
    学习
  • 靴子 Lv4. 资深工程师 2019-01-16
    干货,学习了
  • Tiger.Hu Lv7. 资深专家 2019-01-15
    学习学习
  • 蓝黑使者007 Lv7. 资深专家 2019-01-14
    学习了
  • MangoHoHo Lv7. 资深专家 2019-01-14
    学习了
展开更多评论

相关推荐

【选型】汽车电子功能模块抛负载保护TVS、MOV选型

随着汽车成为大众消费品进入千家万户,无论是传统车辆还是新能源PHEV,车辆的长期安全可靠性成为衡量汽车品质的一个重要指标。而保证汽车安全可靠,除了在汽车电子元器件的车规级的认证选型上需要关注之外,对于汽车电子功能模块的保护也越来越重要。本文介绍抛负载保护器件选型以及推荐Littelfuse TVS SLD8S24A和MOV V10E17AUTO、V20E17AUTO用于汽车电子功能模块抛负载保护。

器件选型    发布时间 : 2020-03-09

【选型】瞬态抑制二极管AQ36C-01FTG用于车载域控制器电源防护,峰值脉冲功率450W,ESD等级±30kV

车载域控制器集成多个ECU功能,电源接口是12V/24V,为防止电源脉冲或杂波对后端器件的影响,需要增加保护电路。推荐采用Littelfuse的瞬态抑制二极管(TVS)AQ36C-01FTG,双向防护,工作电压36V,最小击穿电压40V,反向漏电流1μA,峰值脉冲功率450W,ESD防护等级满足IEC61000-4-2标准±30kV(空气放电)/±30kV(接触放电)。

器件选型    发布时间 : 2023-06-01

【选型】TVS瞬态抑制二极管用于车载HUD显示抛负载防护,峰值脉冲功率3000W,ESD等级±30kV

针对车载HUD的抛负载防护电路的应用,推荐Littelfuse的TVS瞬态抑制二极管TPSMD28CA,双向防护,工作电压28V,最小击穿电压31.1V,反向漏电流2μA,峰值脉冲功率3000W。

器件选型    发布时间 : 2022-11-29

Littelfuse(力特)电路保护产品选型指南

目录- Company profile    Circuit Protection Technologies    Overcurrent/Overvoltage Protection device    ESD Suppression Solutions    Overcurrent Protection/Overvoltage Protection Applications    Common Circuit Threatsand Protection Solutions    Fuses    Fuse Holders    PPTC Devices    Varistors    Gas Discharge Tubes    ESD Suppressors    TVS Diode Arrays    Protection Ics    TVS Diodes    PLED Bypass Protectors    SIDACtor® Protection Thyristors    Circuit Breakers   

型号- PXXX0SAMC,LS2406ERQ23,1812L,LVR,SPHV,30KPA-HR,456SE,456SD,15KPA,345 SERIES,ITV9550 30A,AQ24CANFD,SDP,AC,RUEF110S,LS2406ERQ33,PXXX2AC,MICROSMDCH,562 SERIES,AQ1003-01ETG,SDPXXX0T023G5,150603,800,801,802,804,806,807,BA,808,BB,PGB2,PGB1,P4SMA,TSM600,PTF070,MICROASMD,SC1103C-01UTG,PTF078,PTF077,LS0504EVT233,PTF075,AQXXC-01LTG,810,811,356 SERIES,5KP,813,FB65,814,FB66,CA,CG,CH,PTF080,286677,PICOASMDCH,PXXX2AX,MINIASMDC,SMF4L,121004,B61089BDR,282008,121001,282007,820,121003,AK10-Y,821,121002,282002,823,824,282001,FB55,DA,828,DB,FB58,NANOASMDCH,820-20,830,831,834,835,TP5KP,101001,3453,3452,605,606,RKEF,607,PXXX2ACMC,LS12052BD33,AGRF,PTF0080M,B61089QDR,RUEF135V,850,851,852,3455,853,AHEF100,60R,617,618,GTCX36-XXXM-R05,PXXX0Q12X,860,862,HA,HB34,GTCX36-XXXM-R10,2920L,SP8008,AQ4337-01ETG,155 SERIES,P6SMB,803-01 SERIES,SLD,810 SERIES,870,PTF015,874,875,876,342 SERIES,877,5.0SMDJXXS-HRA,348 SERIES,30KPA,SM7,SM24CANB,SMCG-HR,TSV250,FC09B1606NL-0,SMD,SMF,TPSMB-VR,881,35408 SERIES,OMN002,400,OMN004,885,35406 SERIES,881 SERIES,OMN006,646,405,647,V20H275AUTO,407,649,RXEF,101010,52100001009,AQ24CANA,AQHVXX-01LTG,656,101002,PXXXXDF,658,101003,5KPA-HR,824-20 SERIES,5.0SMDJ,570 SERIES,AQ3530-01FTG,B-SERIES,662,663,422,664,665,LA,SMBLCE-HR,L-SERIES,AQHVXX-01LTG-C,PTF050,SC1105-01UTG,PTF055,G-SERIES,435,437,438,A-SERIES,870 SERIES,PTF065,440,RGEF,437A,441,SP1103C,443,202,203,254 121,445,446,688,447,3453 SERIES,448,449,208,209,TR600,04450001,PTF030,438A,451,SRP,452,453,454,TSM250,PTF035,213,456,215,821 SERIES,458,216,LV ULTRAMOV,459,217,218,SP3401,SP3400,AQ3522-01FTG,TPSMC,FHN26G2,TPSMB,PTF040,TPSMD,LS2405IDD23,PTF045,460,461,5KPA-HRA,462,220,464,465,466,224,467,225,576 SERIES,468,254 101,229,BXXX0CX,SL0902A,102080,470,BXXX1UX,471,472,230,473,232,233,501A,476,234,235,477,MIDSMD,PXXX4UCMC,239,MHS,850 SERIES,813 SERIES,AQ1205-01ETG,483,RA,485,487,802 SERIES,259UL913,ITV4030 22A,SM20,345121,102064,254 201 - 208,251,494,PLEDXUX,253,SD,SE,SG,SH,259,4.0SMDJ,SL1002A,SM,15KPA-HRA,15KPA-HR,GTCX37-XXXM-R10,102074,102076,102079,102078,NANOSMDCH,GTCA28-XXXM-R03,NY61AP,262,102071,263,265,266,3.0SMC,267,DSLP,268,269,LOW RHOPTC,520 002,520 003,520 004,SL1003A,520 005,1KSMB,345101,MLA,LS24062RQ23,1210L,AQ36CANA-02HTG,445073,MLE,MHP-TAM15,272,273,MLN,M-SERIES,274,E-SERIES,275,278,279,AQ3102-02HTG,MHP-TAC6,803-01,MHP-TA,285,AQ3041,SMBLCE-HRA,PLEDXUSXA,SP4322-01ETG,AQ3045,TP1.5KE,SP4208,SC1205-01ETG,820-20 SERIES,354 SERIES,CG33.0L,SP11XX,359 SERIES,MS-SERIES,111 SERIES,100 SERIES,NANOSMDC,346877,PICOASMDCH010F-2,340 SERIES,AHRF300,AHEF,342025,342024,342021,ZA,AQ3400,XGD,FH604,AQ1250-01ETG,PXXX3ACMC,FH602,PXXX6U,SP4010,342006,PLEDXN,SZD200,HG34,PLEDXS-A,J-SERIES,824 SERIES,FEMTOASMDC,ITV5432 30A,AK6-Y,557 SERIES,SL1021A,SL1021B,SP4020,SP4022,SP4021,SMDCH,SP4024,281010,SP4023,PLED,MINISMDC,AXXXXUX6,254 011 - 008,SMTAK3,PXXX0Q22XLH,MHP-TAM6,AK15,445005,281007,154T,281008,281005,AK10,AQ1005,51800001009,PXXXXS4X,ITMOV,354701 SERIES,483A,445004,LS05006VPQ33,SP4044,BXXX1UC4,SP4045,5200001,SMBJ,AQXX-01LTG,AQ7538-08UTG,SP1064E-04UTG,TCF250,SMTOAK2,SMAJ,AQ7520-08UTG,PXXX3AX,NANOASMDC,461E,811 SERIES,800 SERIES,157T,FC51,PXXX1U,PXXX1S,TRF250,SMBJ-HRA,SMDJ,CG3,SP3384NUTG,CG2,CG5,CG4,2205,CG7,B3XX4UX,CG6,VLP,VLR,0603L,PLEDXUX-A,SMCJ,PICOASMDC,LS0504EDD12,SMD2,PXXX0Q22C,GTCX35-XXXM-R05,SMDJ-HR,SMDC,TMOV34S,AHRF,440A,AXGD10603NR,K-SERIES,TPSMC-VR,H-SERIES,SZ1SMB,SZ1SMC,SZ1SMA,219XA,AK20-Y,ITV9550L2030MR,441A,SZ1.5SMC,SP1250-01ETG,C-SERIES,SC1210-01ETG,TB-SERIES,0402L,ITV9550 45A,AHRL,DHB34,FHN26W,AUML,TP6KE,LTKAK3,AQRV05-4HTG,LTKAK2,72R,977,TLP,LTKAK6,AQ15CANA-02HTG,PXXX3AC,SP3205-01ETG,501,3452 SERIES,504,505,506,507,GTCX23-XXXM-R01,508,8.0SMDJ,PXXX3U,100060,100061,100062,122090,100063,100064,100065,PXXX0SX,100066,SC1533-01LTG,SPHV-C,AHS,122093,150318,TS600,150319,150316,150317,150315,AQ3102-02JTG,150312,513,514,100058,100059,2016L,286377,122088,122087,559 SERIES,122083,GTCX26-XXXM-R05,521,523,AK15-Y,100067,526,150322,527,PXXX2SXLH,SL1411A,AK1,AK3,AK6,VTP,422A,SMCJ-HRA,ASMD,C-III,SR70,0805L,860 SERIES,RHEF,SMF3.3,303,304,305,308,35409,35408,35407,35406,TPSMA6L,PXXX2SX,SP724,SP725,SC1115-01UTG,TSL250,LOW RHO,HMOV,SP723,SP720,SP721,312,313,30R,314,556,315,557,559,318,SLD6S,SP1305,SP712,560,562,322,564,324,325,326,328,SLD5S,CX-SERIES,570,571,332,SLD8S,PXXX0SD,576,TRF600,PICOSMDC,3.0SMCJ,SZSMF,LS1205EVD33,SP1326,AQ12CANA-02HTG,340,150307,100,342,FHN20G,344,345,35407 SERIES,348,SMAJ-HRA,150300,AUMOV,LTKAK10,445 SERIES,SC1333-01ETG,RUEF,GTCX25-XXXM-R02,GTCX25-XXXM-R05,LS0502SCD33,111,354,356,52000001009,359,824-20,SP3420,150274,RUSBF,SP1003,SP3422,PXXX0ME,564 SERIES,SP2555NUTG,51900001009,10207101009,520 101,369,SL1122A,571 SERIES,SP1233,AQ2555NUTG,SP1255P,600R,PXXX4UX,WB07B0606LG,370,372,1.5SMC,TLPA,373,1.5SMB,374,SZSMF4L,377,820 SERIES,254 131,PXXX1CX2,SEPXXXXQ38,00300210,SZW200,TP5.0SMDJ,523 SERIES,SP1005,SP1006,CG32.0L,382,AQ1205-01FTG,383,385,35409 SERIES,407A,V14H460AUTO,SMA6L,391,392,CG32.5L,N-SERIES,SMA6J,395,3425L,F-SERIES,154,396,397,398,157,399,159,SC1122-01UT

选型指南  -  LITTELFUSE  - v0420  - 0420 PDF 英文 下载

【选型】Littelfuse(力特)TVS二极管(瞬态电压抑制二极管)选型指南

目录- 过压抑制应用    瞬态电压场景    典型应用    FIT计算方法&钳位波形    选择清单&术语/定义&免责声明    表面贴装型TVS    轴向引线型TVS   

型号- LCE9.0A,1.5SMC540CA,SMCJ36CA,SA13CA,P4SMA16A,SMAJ6.0CA,30KPA45A,5KPXXX,SMAJ40CA,SMDJ12A,SMDJ43CA,SMBJ51A,5KP200A,30KPA170CA,P6SMB56A,LCE22A,SMDJ13A,20KPA26CA,P6KE22A,5.0SMDJ170A,P6KE24A,SMDJ78CA,SMDJ11A,30KPA280A,SMF26A,1.5SMC13CA,SA43A,SMCJ14CA,P4KE13CA,5KP75A,SMCJ78A,30KPA300CA,P4SMA530CA,P4SMA18A,SMDJ10A,P6KE18CA,5.0SMDJ85A,5KP78A,AK10-530C,LCE24A,P4SMA16CA,SMCJ100CA,30KPA48A,20KPA48CA,5KP,5KP28CA,P6KE20A,SMBJ300A,5KP30A,SMBJ150CA,1.5KE150A,P4SMA91CA,SMDJ170A,30KPA45CA,SMAJ70A,SA7.0CA,SMAJ75CA,AK3 - 430C,1KSMB9.1A,SMF24A,SMA6L9.0A,SMBJ16CA,SMA6JXXA,3.0SMC30A,SMA6JXXX,SMDJ58A,P6SMB170CA,SA45A,1.5KE220CA,SA48CA,SMCJ30A,P6KE540A,3KP36CA,5.0SMDJ12CA,P6KE27A,SA180A,P6SMB51A,1KSMB160CA,SMA6J5.0A,SA40A,RS232,SMCJ75A,SMA6L40A,SA22CA,P6KEXXXXXX,P6KE8.2CA,1KSMB27A,SMAJ100A,P4SMA300A,SMF22A,3KP100CA,30KPA42A,SMDJ30CA,P6SMB250A,P4SMA160CA,1.5SMC400A,1KSMB130A,P4KE130CA,P4KE180A,5.0SMDJ170CA,SA110CA,30KPA54CA,P4SMA82CA,P4KE250CA,15KPA75CA,30KPA150A,SMDJ54A,30KPA43A,3.0SMC33A,30KPA198A,AK6-170C,SMDJ160CA,1.5KE7.5A,20KPA180A,3KP14CA,SMA6L85A,SMBJ400CA,P6SMB120A,LCE20A,P6SMB51CA,3KP220CA,P4KE22CA,1.5SMC300CA,AK3-058C,P6SMB300CA,SMCJ220CA,SMF20A,15KPA40CA,1.5SMC530A,P6SMB8.2A,15KPA70A,5KP15CA,1.5KE51A,1KSMB30CA,P6KE100A,1.5SMC39CA,P4SMA56A,P6SMB,V33ZA70PX,P6SMB540CA,1.5KE36CA,SA70CA,SLD,15KPA75A,P6KE36CA,15KPA100A,5KP36A,P6SMB16A,P6SMB300A,20KPA280CA,1KSMB22A,30KPA,5KP200CA,1KSMB43CA,5.0SMDJ130A,SMAJ18CA,SA17CA,1.5KE170CA,20KPA56A,5KP90CA,3KP24A,SMF,SMDJ51A,3KP45CA,5KP190CA,P4SMA170A,04611.25ER,1.5SMC47A,P6SMB15A,SMAJ250CA,SMCJ18CA,P4SMA10A,3KP58CA,1.5KE56A,20KPA160CA,3KP190A,5.0SMDJ30CA,1.5SMC440A,SMDJ120CA,P6SMB91CA,AK10 - 170C,1.5SMC170CA,LCE64A,P4SMA12CA,SA5.0CA,1KSMB24A,P4SMA480CA,5KP24CA,P6SMB16CA,P4SMA11A,3KP22A,SMBJ90A,SMBJ12CA,P4KE530A,SAC8.0,P6SMB13A,SMAJ130CA,SMBJ350CA,SMCJ70A,SAC8.5,SMBJ5.0A,SA48A,P4SMA12A,P4KE39CA,1.5SMC220A,SMCJ100A,P6SMB12A,1.5KE10A,20KPA52A,P4SMA13A,AK6 - 430C,P6KE180CA,P6KE510CA,SMBJ2SCA,P6SMB10A,3KP28A,3.0SMCXXA,5KP7.5CA,1KSMB170A,P4SMA47CA,P6SMB11A,SLD28-018,1KSMB56CA,SMDJ5.0A,SA26CA,30KPA58CA,P6SMB100CA,5.0SMDJ78CA,3KP10CA,1.5KE12A,15KPA18CA,15KPAXXX,P4KE400A,AK15 - 058C,P6SMB58A,SMBJ170A,1.5KE10CA,AK3 - 030C,LCE60A,1KSMB68A,1KSMB20A,P4KEXXXXX,5.0SMDJ43CA,P4SMA15A,1.5KE11A,P6KE,30KPA144CA,15KPA30A,3KP26A,SMA6L5.0A,SMDJ12CA,15KPA78A,30KPA84A,P6KE27CA,5KP33A,P6SMB82CA,15KPA180CA,AK3 - 380C,1KSMB6.8CA,5KP11CA,30KPA36CA,SMBJ5.0CA,20KPA52CA,P4KE6.8CA,P6SMB47CA,SA150CA,1.5SMC250CA,P4SMA480A,P6SMB220CA,SLD17-018,1.5KE540A,1KSMB62A,SMCJ85CA,15KPA26CA,P4SMA130A,15KPA24A,30KPA90A,3KP64A,AK3 - 076C,SLD33-018,P4KE20A,1.5SMC51A,SMBJ78CA,20KPA60A,P4KE68A,SMAJ48CA,SMBJ43CA,5KP33CA,AK15 - 066C,1KSMBXXXXX,P6KEXXXXX-B,SMCJ7.5A,SMAJ400A,SLD36U-017,30KPA71CA,P4SMAXXXXX,SA90A,SMCJ110A,15KPA110CA,30KPA102A,5KP20CA,SMBJ18A,20KPA132A,SA75CA,P4KE62CA,1.5SMC75CA,SMCJ8.5CA,LCEXXXXX-B,P6SMB12CA,SMAJ300CA,3KP6.5A,P6KE220CA,SA40CA,SLD20U-017,P4SMA30CA,1.5KE27CA,15KPA22A,SACXXXX,SMAJ26CA,5KP160A,1KSMB13CA,SACXXXXX,1.5SMC6.8A,20KPA96CA,SLD16U-017,3KP9.0CA,1.5KE510CA,SMAJ-XXXXX,P6KE100CA,P6KE22CA,SMBJ16A,20KPA240CA,SMBJ30CA,1.5SMC56A,5KP28A,SMAJ36A,30KPA108A,P4SMA51A,3KP20A,15KPA28A,SMAJ8.5CA,SMAJ180A,SMBJ440CA,P4KE100A,1.5KE130CA,P4SMA43CA,SMBJ17A,SMBJ120CA,20KPA120CA,5KP8.0A,1.5SMC10A,5KP250A,15KPAXXXXXX,3KP75CA,5KP64CA,SMBJ14A,P6SMB18A,P4SMA56CA,SMAJ13CA,SMDJ16CA,SMBJ130A,1.5SMC130CA,15KPA26A,15KPA48CA,5.0SMDJ36A,AK6-430C,P4KE530CA,P4KE62A,3KP40CA,5KP120CA,SA100A,SMBJ15A,P6KE180A,SMAJ170CA,AK6 - 380C,P4SMA440A,SMBJ9.0A,20KPA56CA,15KPA180A,SMA6L43A,30KPA260CA,SMBJ12A,SMF7.5A,30KPA144A,SMAJ6.0A,P6KE62CA,5.0SMDJ100CA,SMBJ350A,3KP100A,1.5SMC91A,AK6 - 030C,SA7.5CA,SMDJ120A,1KSMB39CA,SMCJ300CA,5.0SMDJ78A,1.5SMCXXXXX,SMCJ7.0A,SMDJ51CA,15KPA22CA,5.0SMDJ30A,5.0SMDJ48CA,SMBJ13A,SACB5.0,1.5KE62CA,SLD15-018,P6SMB43CA,SMCJ170CA,P6KE75A,SMAJ33A,SMCJ54CA,P4SMA220A,30KPA75CA,P4KE480CA,AK3-015C,1.5SMC22CA,AK10 - 430C,5.0SMDJ33A,SMCJ150A,20KPA172A,P6KE6.8A,SMBJ58A,1.5KEXXXXX,5KP70A,SA6.0A,P6SMB30CA,5KP8.5A,SMAJ78A,SLD13U-017,SMAJ30A,5KP120A,5.0SMDJ26CA,SMBJ10A,SMDJ18A,SMBJ11A,5KP51CA,P4KE27A,SMAJ22CA,SMBJ220A,SMCJ6.5CA,SMAJ75A,SMCJ36A,SMAJ100CA,SMDJ60CA,5.0SMDJ75A,LCE26A,P4SMA9.1A,SMDJ17A,SMBJ7.5CA,P4SMA91A,1.5KE100A,P6SMB170A,P6KE30A,3KPXXXXXX,SMCJ45CA,3KP60A,1.5SMC180A,30KPA84CA,SMA6L48A,SMF7.0A,P6KE75CA,P4KE24A,3KP180CA,SMDJ16A,AK10-058C,SMAJ6.5A,SMBJ440A,20KPA30CA,SMCJ10CA,P6KEXXX,SMCJ58CA,SMDJ7.5CA,3KP18CA,SMA6L45A,SMAJ6.5CA,SMBJ200CA,LCE28A,5KP210A,5.0SMDJ17CA,1.5KE18CA,SMDJXXXXX-T7,5KP60CA,P4KE160CA,SMDJ15A,5.0SMDJ70CA,1.5KE320A,SMCJ33A,1.5KE8.2CA,P4SMA350A,P6SMB56CA,AK6 - 076C,P4KE22A,SMBJ54A,P4SMA6.8CA,SMF28A,SMDJ14A,SMDJ8.5A,30KPA216CA,1KSMB130CA,P4KE75CA,P4KE6.8A,1.5KE91A,SA6.5A,5.0SMDJ33CA,SA36CA,AK3-150C,SMBJ,P4SMA9.1CA,P6KE170CA,SMDJ20CA,15KPA30CA,SMF6.0A,15KPA170CA,P4SMA15CA,1.5KE160A,LCE58A,P6SMB68A,SMA6L8.5A,LCE10A,P6SMB110A,30KPA58A,1KSMB9.1CA,P4SMA7.5CA,SMAJ7.5A,3KP6.0CA,5KP64A,SMDJ160A,3KP26CA,SMAJ60A,SMAJ,P4SMA510A,P6KE36A,SMBJ40A,5.0SMDJ70A,1.5KE550CA,LCE11A,SMDJ48A,1.5KE20CA,1KSMB7.5CA,SMCJ7.0CA,SMCJ20A,P4KE3

选型指南  -  LITTELFUSE PDF 中文 下载

【技术浅谈】TVS的选型计算你做对了吗?(续)

TVS的选型计算介绍。上一篇写的计算方法针对的是单次的浪涌,比如Surge test一般两次浪涌之间会有30~60 s的间隔时间,这意味着TVS有足够的时间去把吸收的浪涌能量给耗散掉,不会因为热累积而导致TVS温度过高而损坏。但是,现实中还有一些情况是会有重复浪涌的。

设计经验    发布时间 : 2024-09-07

【产品】防雷击的TVS二极管,保障CAN总线通信安全

内含两个双向TVS管,泄露电流低至0.1uA,钳位电压极低。

新产品    发布时间 : 2017-03-07

Littelfuse Pre-PCN41500 for SZxx series of TVS AUTO products

型号- SZXX,SZ1SMB,SZP6SMB,SZ1SMC,SZXX SERIES,SZSMF4L,SZ1SMA,SZ5KASMC,SZ1.5SMC,SZSMF,SZ3KASMC

产品变更通知及停产信息  -  LITTELFUSE  - Jan 23, 2024 PDF 英文 下载

LFPCN 41453:Commercial Grade TVS Products Wafer Size Change

型号- P4SMA16A,30KPA168A-B,SMAJ6.0CA,SMAJ40CA,SMA6J78CA,SMDJ22CA-T7,1.5KE75A-B,20KPA52CA-B,30KPA170CA,SMF10CA,5KP48A-B,5.0SMDJ170A,AK10-240C-12,AK3-430C-12,1.5KE550A-B,5KP36A-B,8.0SMDJ24A,SMDJ78CA,1.5KE110CA-B,P6KE56CA-TB,SMBJ5.0A-012,1.5SMC13CA,SMCJ14CA,5KP85CA-ER,30KPA300CA,P4SMA18A,5.0SMDJ85A,AK10-530C,P4SMA16CA,SMBJ8.5CA-KF,30KPA132CA-B,SMCJ100CA,20KPA48CA,SMBJ300A,SMF33A-T13,5KP30A,SMBJ150CA,5.0SMDJ75CA-T7,8.0SMDJ26A,SMDJ170A,1.5KE68CA-B,SMAJ70A,5.0SMDJ40A-T7,SMA6J64A,3.0SMC30A,20KPA300A-B,5KP24A-B,30KPA156A-B,SMDJ58A,SAC22-B,SA48CA,SA30CA-B,SMCJ30A,SMBJ33A-T7,P4KE300A-B,SA180A,30KPA258A-B,8.0SMDJ18CA,30KPA132A-B,SMA6L40A,3.0SMCJ13CA,SA22CA,SMF58A-T13,30KPA144A-B,P6KE8.2CA,SMAJ100A,SMDJ43A-T7,SMAJ30A-N,8.0SMDJ20A,SMCJ64A-T7,P4KE120A-B,5.0SMDJ14A-A,30KPA51A-B,1KSMB130A,P4KE180A,5.0SMDJ170CA,SA110CA,5KP5.0CA-B,SMA6L130A,30KPA54CA,P4SMA82CA,1.5KE180CA-B,SMDJ16A-ER,SMDJ54A,SMF51A-T13,30KPA198A,3.0SMC33A,SMDJ160CA,20KPA180A,SMBJ400CA,3.0SMCJ26CA,SMF36CA,SMDJ6.0A-T7,20KPA160A-B,AK6-058C-12,5KP16CA-B,P4KE43CA-B,P6SMB51CA,P4KE22CA,15KPA40A-B,15KPA90CA-B,P6KE170A-TB,8.0SMDJ22A,SMCJ220CA,SMF4L16CA,15KPA40CA,1.5KE16CA-TB,8.0SMDJ24CA-T7,1.5KE51A,LCE8.5A-B,1KSMB30CA,1.5SMC39CA,1.5KE91CA-B,SA70CA,1.5KE36CA,SMA6L26A-HL,15KPA100A,5KP36A,5.0SMDJ26A-T7,30KPA75A-B,P6SMB16A,TRANSINK288M,1KSMB43CA,SMAJ18CA,SA17CA,1.5KE170CA,5KP90CA,SA16CA-B,SMDJ40CA-T7,SA7.0CA-B,P6KE39A-B,SMDJ51A,P4SMA170A,AK10-240C-100,P6SMB15A,P6SMA440CA-L,P6KE170A-SEN,8.0SMDJ14A-T7,AK1-380C-Y,P4SMA10A,1.5KE56A,SMA6J7.5CA,8.0SMDJ100A,1.5SMC440A,SA20A-B,LCE64A,SA5.0CA,15KPA20CA-B,P4SMA480CA,SMDJ150A-T7,5KP24CA,P6SMB16CA,1.5KE12CA-B,P4SMA11A,P6KE8.2A-B,P4KE16CA-B,SMBJ90A,P6KE15CA-B,SMF64A,SMBJ12CA,SAC8.0-B,P4KE530A,P6SMB13A,5.0SMDJ40CAS,SMDJ70A-T7,30KPA258CA-B,P6KE27A-B,SMBJ5.0A,AK1-430C-Y,P4SMA12A,5KP120A-B,P4KE30A-B,P6KE15A-B,3.0SMCJ40A,30KPA43CA-B,P6SMB12A,LTKAK6-066C,SMF4L170A,5.0SMDJ17A-T7,8.0SMDJ28A,P4SMA13A,AK6-066C-Y,15KPA180A-B,P6KE180CA,5KP30CA-B,P6SMB10A,8.0SMDJ40CA,P4SMA47CA,P6SMB11A,SMF15A-T13,1KSMB56CA,5KP85A-B,P4SMA250A-SF,P6SMB100CA,5.0SMDJ78CA,15KPA18CA,1.5SMC62CA-SOE,P4KE400A,30KPA300A-B,1.5KE10CA,LCE60A,1KSMB68A,15KPA160CA-CR,SMBJ58A-ER,30KPA150CA-B,SMF60A,P4SMA15A,5.0SMDJ110A-ER,15KPA30A,SMA6J60A,SMA6L5.0A,P6KE20CA-B,P6KE27CA,SA8.0A-B,30KPA84A,15KPA58CA-B,5KP33A,P6SMB82CA,15KPA180CA,P4KE480CA-B,1KSMB6.8CA,SMDJ170CA-T7,5KP11CA,SMDJ15CA-T7,AK10-190C-Y,30KPA36CA,P4KE6.8CA,20KPA52CA,P6KE13CA-TB,SMDJ16A-T7,P6SMB47CA,SAC18-B,1.5SMC250CA,P4SMA480A,SMF40A-T13,P6SMB220CA,1.5SMC75A-ER,LTKAK6-058C,AK10-380C-12,1.5KE540A,TRANSINK200M,1KSMB62A,SA120A-B,P6KE43A-B,SMDJ200CA,P4KE300CA-B,15KPA24A,30KPA90A,SMF70A,1.5KE120A-B,HSMF4L7.0A-100,P4KE20A,SMAJ48CA,SMBJ43CA,P4KE250A-B,5.0SMDJ70AS,SMBJ5.0CA-KF,20KPA132CA-B,5.0SMDJ17AS,8.0SMDJ75A-T7,20KPA144A-B,SMCJ7.5A,SMAJ400A,30KPA71CA,SMF90A-T13,SA90A,SMF4L9.0A,30KPA102A,SMA6J16CA,20KPA172CA-B,SMBJ18A,AK10-530C-AY,SMDJ6.0CA-T7,1.5SMC75CA,P6KE220CA,SMAJ300CA,SA40CA,P6SMB440A-101,15KPA22A,5KP120CA-B,1.5SMB68A,1KSMB13CA,8.0SMDJ36A-T7,20KPA96CA,1.5KE510CA,5.0SMDJ48CAS,P6KE18A-B,P6KE100CA,SMBJ16A,20KPA240CA,SMBJ30CA,5KP28A,30KPA108A,1.5KE47A-B,3.0SMC20A-HM,SMF110A,15KPA28A,5KP7.5CA-B,SMTAK3-058C-B,P6KE11CA-B,SMAJ8.5CA,SMAJ180A,P4KE100A,1.5SMB68CA,1.5KEAAACA,20KPA132A-B,SMBJ17A,8.0SMDJ45A-T7,SMDJ120CA-T7,SMF85CA,SMBJ120CA,20KPA120CA,5KP8.0A,1.5SMC10A,SMDJ75CA-ER,5KP250A,30KPA30CA-B,SMBJ14A,P6SMB18A,1.5KE510A-B,SMDJ16CA,LTKAK2-160C-L,SMBJ130A,5.0SMDJ36CAS,P6KE180A-B,1.5SMC130CA,15KPA26A,15KPA48CA,20KPA120A-B,SMDJ440CA,AK6-430C,5.0SMDJ22A-T7,LCE18A-B,SMDJ8.5A-T7,5KP120CA,P6KE200A-B,SA100A,P4KE7.5CA-B,SMBJ15A,1.5KE43CA-B,SMAJ170CA,8.0SMDJ18A-T7,5KP64CA-N,SMA6J51CA,15KPA180A,SMA6L43A,30KPA260CA,SMBJ12A,5.0SMDJ8.5AS,SMAJ6.0A,P6KE62CA,1.5KE16CA-B,P4KE56CA-B,5.0SMDJ48AS,5KP64CA-B,1.5SMC91A,5.0SMDJ36CA-T7,20KPA34CA-B,P6KE24CA-B,SA7.5CA,SMDJ54CA-T7,1KSMB39CA,SMDJ30A-T7,SMF4L17CA,SMF4L33A,5.0SMDJ24CAS,5.0SMDJ78A,SMCJ7.0A,15KPA22CA,1.5SMB24CA,SMDJ51CA,5.0SMDJ48CA,SMBJ13A,30KPA280A-B,P6KE75A,15KPA64A-B,5KP33A-B,P4SMA220A,5.0SMDJ43CA-T7,P6KE51CA-B,P4KE480CA,AK3-015C,SMCJ150A,20KPA172A,SMDJ11CA-T7,30KPA360A,SMF4L36A,30KPA120A-B,AK3-058C-Y,SA6.0A,5KP8.5A,SMBJ220A-L,SMAJ78A,SMDJ90CA-T7,20KPA172A-B,5KP120A,8.0SMDJ30A,SMCJ5.0A-T7,SMBJ10A,P4KE27A,P4KE6.8CA-B,SMBJ11A,HTVSB7.0CA-100,SMAJ22CA,5.0SMDJ12CAS,8.0SMDJ22CA,SMCJ6.5CA,P4KE82A-B,SMAJ75A,SMCJ36A,5.0SMDJ75A,P4SMA9.1A,30KPA70CA-SS,SMA6J5.0CA,SMF54CA,P4SMA91A,1.5KE100A,5.0SMDJ78A-T7,P6SMB170A,SMCJ45CA,1.5SMB62A,SMAJ188A,30KPA84CA,SMA6L48A,P6KE75CA,P4KE24A,P4KE12CA-B,AK10-058C,8.0SMDJ48CA,SA16A-B,SMAJ6.5A,SMBJ440A,8.0SMDJ85CA-T7,SMCJ58CA,5KP160A-B,SMDJ7.5CA,SMA6L45A,15KPA54CA-B,1.5KE18CA,5.0SMDJ17CA,5KP60CA,AK10-530C-NT,5.0SMDJ70CA,SMCJ33A,P4SMA350A,8.0SMDJ48A-T7,SMA6J64CA,P4KE22A,P4SMA6.8CA,5KP45A-B,SMF4L220A,SMF4L30A,1.5KE30CA-B,SMF54A-T13,P4KE6.8A,SMBJ5.0CA-MD,SA6.5A,5.0SMDJ75A-ZTE,5.0SMDJ33CA,SA36CA,AK3-150C,P4KE82CA-B,AK20-016C-Y,SMDJ20CA,SMF6.0A,AK10-190C-100,5.0SMDJ150A-T7,LCE58A,P4SMA15CA,SMA6L8.5A,30KPA260CA-B,SAC10-B,P4KE440CA-B,SMDJ51CA-T7,SMA6J78A,SMDJ160A,SMAJ60A,P4SMA510A,8.0SM

产品变更通知及停产信息  -  LITTELFUSE  - Apr 7th , 2023 RAR 英文 下载

在TVS应用中,双向TVS是否可以替换单向TVS使用?

一般双向的TVS可以抑制正反过压,当应用于通讯接口时可以使用双向的TVS,当用于电源接口时,如果要考虑防接反功能的话则不能用双向TVS替代。

技术问答    发布时间 : 2017-07-11

如何在瞬态电压抑制二极管(TVS)SMBJ15CA的单向抑制和双向抑制之间进行选择?

单向二极管通常用于直流电路,包括按钮和开关。它们也被设计用于没有负电压作为信号一部分的数字电路中(如USB、HDMI等)。双向二极管被用于交流电路中,其可能含有具有大于-0.7V负分量的任何信号,这些电路包括音频、模拟视频、遗留数据端口(如CAN、LIN、RS-485等)和RF接口(如蜂窝、蓝牙、NFC等)等。

技术问答    发布时间 : 2017-10-10

3通道TVS阵列SP0503BAHTG用于USB防护时,该如何使用?

3通道TVS阵列SP0503BAHTG用于USB防护时,其公共端接USB的电源地GND,另外3端分别接USB的电源VCC、数据线USB D+和USB D-。

技术问答    发布时间 : 2017-10-10

【技术大神】选对TVS管防护让Type C更加稳定可靠

探析引用SP0201B-ULC-01UTG进行自助服务一体机的静电防护改版,解决设备外挂设备不灵、经常死机等问题

设计经验    发布时间 : 2017-02-21

Automotive Circuit Protection using Littelfuse Automotive TVS Diodes

型号- SZSMF4L SERIES,TPSMA6L,SZP6SMB SERIES,SZ5KASMC,TP6KE SERIES,SLD,TPSMF4L,SLD33U-018,TP1.5KE SERIES,SLD6S SERIES,SZ1SMB,SZ1SMC,SZ1SMA,TP5KP SERIES,SZSMF SERIES,TP5KP,TPSMA6L24A,SLD6S,SZ1.5SMC,SLD33-018,TPSMC SERIES,SZ1SMA SERIES,SZ1SMC SERIES,TPSMB30CA,SLD8S SERIES,SLD15-017,SLD8S36A,SLD8S24A,TPSMB15CA,SLD5S,TP1.5KE,SZP6SMB,TP6KE,SLD SERIES,SZSMF4L,SLD8S,SLD5S SERIES,TPSMB24CA,SZSMF,TPSMA6L SERIES,TPSMA6L30A,TPSMB SERIES,SZ1.5SMC SERIES,TPSMC,TPSMB,TP5.0SMD,TPSMD,TPSMD SERIES,SZ1SMB SERIES,TPSMF4L SERIES,TPSMA6L15A,SLD15U-017

应用笔记或设计指南  -  LITTELFUSE  - 2023/6/19 PDF 英文 下载

展开更多

电子商城

查看更多

只看有货

品牌:LITTELFUSE

品类:TVS Diode Arrays

价格:¥2.3671

现货: 79,834

品牌:台舟电子

品类:ESD protection diode

价格:

现货: 0

品牌:华轩阳电子

品类:Bi-directional ESD Protection Diode

价格:¥0.1412

现货: 0

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.4394

现货: 251,550

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.3082

现货: 215,514

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.4394

现货: 214,049

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥0.5661

现货: 198,871

品牌:LITTELFUSE

品类:TVS Diode

价格:¥0.4710

现货: 172,002

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.3082

现货: 167,100

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥3.1396

现货: 153,897

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

现货市场

查看更多

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥0.6000

现货:600,000

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥0.7000

现货:120,000

品牌:ONSEMI

品类:TVS二极管

价格:¥0.2000

现货:33,000

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.5523

现货:18,000

品牌:LITTELFUSE

品类:TVS

价格:¥0.5600

现货:14,341

品牌:ONSEMI

品类:TVS二极管

价格:¥0.6000

现货:5,385

品牌:LITTELFUSE

品类:TVS Diode

价格:¥2.0000

现货:2,892

品牌:LITTELFUSE

品类:TVS Diodes

价格:¥1.5600

现货:1,802

品牌:ONSEMI

品类:二三极管

价格:¥1.2400

现货:93

品牌:LITTELFUSE

品类:Transient Voltage Suppression Diodes

价格:¥1.3600

现货:20

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

服务

查看更多

贴片LED二极管/灯珠定制

可定制LAMP LED、 CHIP LED、 PLCC LED、 汽车用车规级LED、COB LED的尺寸/电压/电流等参数,电压1.5-37V,电流5-150mA,波长470-940nm。

最小起订量: 30000 提交需求>

贴片灯珠定制

可定制单色光灯珠、双色灯珠、全彩灯珠、发光二极管、贴片灯珠、贴片LED等产品,尺寸:0.6*0.3mm-3.2*2.7mm,波长:405-940nm,亮度:24-750mcd,电压:1.5-3.5V。

最小起订量: 3000 提交需求>

世强和原厂的技术专家将在一个工作日内解答,帮助您快速完成研发及采购。
我要提问

954668/400-830-1766(工作日 9:00-18:00)

service@sekorm.com

研发客服
商务客服
服务热线

联系我们

954668/400-830-1766(工作日 9:00-18:00)

service@sekorm.com

投诉与建议

E-mail:claim@sekorm.com

商务合作

E-mail:contact@sekorm.com

收藏
收藏当前页面