【经验】如何有效解决消防电力监控设备静电死机的情况？

时间： 2021-04-15 来源：优恩半导体

技术问答

客户产品为消防电力监控产品，设备包含交流220V输入、三相电压、电流采集，多路温度检测及485通信模块，产品现要满足IEC 61000-4-2 III级（接触±6KV、空气±8KV） class A的静电测试要求，未整改前测试会出现死机状况，产品实物图如下：

1、在客户板什么都不改动的情况下，按照IEC 61000-4-2的标准进行空气8KV，接触6KV的静电放电测试，在测试温度检测端口会出现死机的情况，

2、经过分析原理图及实际用料情况，做如下整改：

温度检测端口整改措施；

a. 把最前端RT1_0的TVS SMBJ6.0CA改SMBJ3.3A,把RT1_0输入割断加个磁珠，型号是 MCB2012S121HBP，再进去经过R48后端串个磁珠，型号是MCB1608S121IBP ，后级并联的电容C53由102改成104，去掉双路二极管D6，在信号对地加ESD03V32D-C的ESD静电管，并在静电管旁边并104电容；

b. 另外一条支路在R49的前端并一个104的电容，经过电阻，去掉双路二极管D7，在信号对地加ESD03V32D-C的ESD静电管，并在静电管旁边并104电容；

c. RT1_1对地磁珠换成MCB2012S121HBP；

485端口整改措施；

a. A/B端加两颗PPTC，型号为SMD1812-014，把原来用的两个双向TVS管SMBJ6.0CA改成两个单向SMBJ6.0A,这样在降低残压的同时，能最大的程度的节约PCB空间，降低成本；

3、经过上述整改，测试效果已经有明显好转，但在测试次数过多的情况下，还是偶尔会出现死机的情况，结合原理图进一步分析，初步判定是电源3.3V电源处受到影响，电源端口整改措施；

a. 1117处3.3V输出端把原来SMBJ6.0CA的TVS管改成SMBJ3.3A;

b. C42/43/44/45/46处分别再并104电容；

系统地与大地之间整改措施；
把原来两个电阻换成一个Y2电容；

经过如上全部整改，再次进行每个测试点各10次的静电放电实验，产品无任何影响，满足IEC 61000-4-2 III级（接触±6KV、空气±8KV） class A测试要求；

1、针对直接从端口注入的接触、空气放电，可以在产品的端口处串联磁珠（发热消耗静电能量），并联合适的ESD、电容进行旁路钳制处理；

2、有接地的产品，系统地与大地PE之间尽量通过电容或者电阻并电容来隔离；

3、在布板设计时还要注意PCB上的静电、浪涌电流回路的走线线径、周边结构设计等等，在出现问题时，需多方面去考虑，才能更好的找到问题点所在。

优恩半导体公司专注于ESD静电保护、雷击浪涌保护器件及串口芯片的设计，研发和销售，并向客户提供完整的解决方案和测试整改等技术服务。

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本文由星晴123转载自优恩半导体，原文标题为:优恩|消防电力监控设备静电整改案例，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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目录- 企业简介和产品概览静电保护器（ESD）瞬态抑制二极管（TVS）半导体放电管（TSS）双向触发二极管（SIDAC）压敏电阻（MOV）陶瓷气体放电管（GDT）玻璃气体放电管（SPG）微型防雷模组（MLPM）自恢复保险丝（PPTC） RS485/422收发器 CAN收发器网口RJ45连接器分立功率器件 EMI保护元器件

型号- SMDJ-AT SERIES,07DXXKJ,UN2E8-XXXML SERIES,SMBJ,UN2E5-XXXLL SERIES,UN232,UN2E8-XXXL HV,4.0SMF SERIES,UN1812-XXXCSMD SERIES,10DXXKJ,5.0SMDJ-AT SERIES,P6KE SERIES,30KP SERIES,SACB SERIES,UNS1K SERIES,PXXXSC SERIES,P4KE,SMD0603 SERIES,10DXXKEC SERIES,UN490E,UN3E8-XXXHP,UNSDC12V-3L,07DXXK,07DXXL,UN3E5-XXXMSMD,PXXXSB,15KPS,PXXXSA,PXXXSB-2L,P4SMA SERIES,SA SERIES,SMAJ,UN2220 SERIES,05DXXKJ,SAC SERIES,SMF SERIES,PXXXSC,KXXXSA SERIES,20KP,5.0SMDJ SERIES,0402 SERIES,20KP SERIES,TPSMAJ SERIES,PXXXLB SERIES,SMCJ SERIES,UN3490,P4SMA,UNSDC24V-3L,SMDJ,UNS1K,UN3E6-XXXMM,UN65HVD75,UN2E8-XXXL HV SERIES,SMDT,UN1812 SERIES,UN3220 SERIES,SA,UN2E8-XXXML,UNS4032 SERIES,UN2E8-XXXHL SERIES,UN2E5-XXXL HV,UNSDC58V-2L,SMD1210 SERIES,UN2E5-XXXLSMD,PXXXEC SERIES,UN3485,UN16,5KP,1.5KE SERIES,TP5.0SMDJ,14DXXL SERIES,07DXXKBC SERIES,MCM系列,UNS2K,UN2E8-XXXMSMD,UN2E5-XXXLL HV SERIES,10DXXKEC,UNSDC24V-2L,32DXXL SERIES,UN3E8-XXXHM SERIES,SMCJ,TPSMB SERIES,UN1210-XXXBSMD SERIES,UN3E6-XXXM,TPSMDJ SERIES,UN65HVD233,UN65HVD234,100M,UN65HVD232,UN65HVD230,SMBJ-AT,UN2E5-XXXL,UN2E8-XXXM,UN1210-XXXBSMD,34SXX,KC SERIES,UN2E6-XXXLSMD SERIES,UN2E8-XXXH,UNB-XXXN-SMD,UN3E8-XXXHMF,32DXXKJ SERIES,UN1050,UN3232E,UN1050ISODUB,32DXXKJ,40DXXK,UNS3220,UNB-XXXN/M,40DXXL,UN3085NE,SMCJS,UN2E8-XXXHSMD,HCM系列,TPSMB10J,32DXXK,32DXXL,PXXXEC,UN30,PXXXEB,KXXXSB,PXXXEA,30KP,KXXXSA,P6SMB SERIES,1012,KXXXSD1,PXXXSC-2L SERIES,15KP,PXXXSC-2L,0603,SMD2920 SERIES,10SMBT,14DXXKJ,UN82C250,UNSRS485-2HL,UN82C251,10SMBJ,25DXXL SERIES,05DXXL SERIES,TPSMC SERIES,UN2H8-XXXL HV SERIES,UNSDC58V-3L,SM8Z SERIES,TPSMCJ SERIES,SM5Z,UN6,UN3E5-XXXL,UN3088E,KXXXG SERIES,PXXXTB,PXXXTA,KXXXG,UN2E5-XXXLSMD SERIES,KA SERIES,UNB-XXXN-SMD SERIES,2012,UN3088ES,07DXXL SERIES,5KP SERIES,UN3485ISO,8KP SERIES,PXXXEA SERIES,UNA-XXXN/M SERIES,SMCJS SERIES,3KP,SM8Z,UN3E5-XXXLM,SMCJ-AT SERIES,LCE SERIES,UNC-XXXN/M SERIES,UN3E8-XXXHM,PXXXSA SERIES,UNSRS485-2H,SMCJ-AT,UN0805 SERIES,PXXXDM,POE58C,15SMBJ,PXXXTB SERIES,PXXXSB-2L SERIES,UNA-XXXN-SMD,40DXXKJ SERIES,UNS3220 SERIES,UN1206 SERIES,P4KE SERIES,SM5Z SERIES,UN2E8-XXXMSMD SERIES,UN3E6-XXXMM SERIES,05DXXK,05DXXL,UN600 SERIES,1012 SERIES,UNB-XXXN/M SERIES,8.0SMDJ,UNSRS485-2L,P6SMB,SACA SERIES,40DXXKJ,1000M,40DXXL SERIES,PXXXDM SERIES,SACA,UN0603 SERIES,SACB,UN2E5-XXXL SERIES,UN2H8-XXXLL HV SERIES,SMD2920,0402,8.0SMDJ SERIES,25DXXL,25DXXK,UN30 SERIES,10DXXL SERIES,25DXXKJ,20DXXL SERIES,5KPS,UNA-XXXN-SMD SERIES,UN485E,UN2E8-XXXHL,PXXXSB SERIES,UN485ES,PXXXTA SERIES,UN3E8-XXXHMF SERIES,UN2H8-XXXLL HV,SMDJ-AT,4.0SMF,SMF,TPSMB10J SERIES,0603 SERIES,5KPS SERIES,UN2E8-XXXH SERIES,KD SERIES,UN60,SMAJ-AT SERIES,TPSMDJ,UN1206-XXXASMD SERIES,UN2E8-XXXHSMD SERIES,UN3232E-T,UN1210 SERIES,14DXXKSC,07DXXKBC,10DXXK,UNSDC48V-2L,10DXXL,53DXXK,UN3E8-XXXHSMD SERIES,2012 SERIES,UN0805,UN3E5-XXXMSMD SERIES,KA,KB,UN1812-XXXCSMD,KC,TPSMCJ,UN2E8-XXXLL HV,6.0SMAJ SERIES,KD,14DXXKSC SERIES,UNS2K SERIES,10SMBJ SERIES,TP5.0SMDJ SERIES,SMD1812 SERIES,UN60 SERIES,5.0SMDJ,UN3490E,UNSDC48V-3L,20DXXKYC SERIES,SMD0603,SMD1812,KXXXSB SERIES,UN1206,UN16 SERIES,SMBJ SERIES,UNSRS422-2H,SMDT SERIES,UN1210,UNSRS422-2L,UN135 SERIES,TPSMBJ,PXXXLC SERIES,UNS4032,UNA-XXXN/M,0201 SERIES,UN1206-XXXASMD,UN2H8-XXXL HV,5.0SMDJ-AT,UN3E5-XXXL SERIES,UNC-XXXN/M,20DXXKYC,UN3485S,UN3E6-XXXM SERIES,34SXX SERIES,UN2E5-XXXLL,0201,UN3E8-XXXHP SERIES,UN3E8-XXXH SERIES,UN1042,UN3220,TPSMAJ,UN1040,UN2E8-XXXLL HV SERIES,15KP SERIES,8KP,UN2E5-XXXL HV SERIES,UN2E6-XXXLSMD,6.0SMAJ,UN3E8-XXXHSMD,34SXXJ SERIES,SMD1206 SERIES,SMBJ-AT SERIES,TPSMA SERIES,LCE,UN600,14DXXK,UN6 SERIES,14DXXL,UNC-XXXN-SMD SERIES,UNSRS422-2HL,15SMBJ SERIES,SAC,SMD0805 SERIES,SMAJ SERIES,UN3E5-XXXLM SERIES,UN3E5-XXXLSMD SERIES,UN250 SERIES,UN3E8-XXXH,UN485CUA,UN488E,UN250,KB SERIES,PXXXLC,UN2E5-XXXLL HV,UN135,PXXXLB,PXXXLA,SMD1206,UN0603,UN1812,20DXXL,20DXXK,PXXXEB SERIES,10SMBT SERIES,1.5KE,UNC-XXXN-SMD,3KP SERIES,P6KE,KXXXSD1 SERIES,TPSMC,SMD0805,TPSMB,TPSMA6J SERIES,TPSMA,TPSMBJ SERIES,34SXXJ,20DXXKJ,SMD1210,SMDJ SERIES,UN2220,UN2E8-XXXM SERIES,TPSMA6J,UNSDC12V-2L,1.5SMC SERIES,15KPS SERIES,SMAJ-AT,PXXXLA SERIES,UN3E5-XXXLSMD

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型号- 15SMBJ78CA,SMAJ6.0CA,SMAJ40CA,SMBJ20A-AT,SM8Z20A,15KP58A,UN2K8-400SMD,SMD1206-350,SMDJ78CA,UN3E8-75HM,P0300SC-2L,ESD05V02D-CP,UN3E8-75HP,TPSMB30CA,SMDJ16A-AT,15SMBJ7.5CA,UNC-301N-SMD,TPSMCJ18CA,PESD0603E12V,UN6-200,05D511K,20D241KYC,5.0SMDJ85C,SMDJ36CA-AT,5.0SMDJ85A,K2200G,UN0402E18V120P,SMCJ100CA,ESD15V52D-LCF,5KP30C,5KP30A,SMF120CA,SMBJ150CA,SMDJ170A,SM8Z33CA,TP5.0SMDJ28CA,53D681K,SMDJ170C,3KP80CA,UN2K8-800L,UN135-250,SMCJ30C,32D122K,SMCJ30A,UNA-471M,SA180C,SMAJ70CA-AT,K0900G,SM8Z24A,SA180A,4.0SMF5.0A,15KP54A,20D781KJ,SMF190A,P6KE8.2CA,TPSMA82A,P4KE180A,P4KE180C,14D181KSC,ESD24V26T-5L,20D331KYC,P4SMA82CA,SMF3.3A,TP5.0SMDJ15CA,SM8Z22A,MCM3216B SERIES,SMDJ160CA,SMBJ400CA,SMCJ80CA,SMD1812-200-24V,PXXXXLB,PXXXXLC,P6SMB51CA,PXXXXLA,ESD24V26T-4L,4.0SMF12CA,TPSMB43CA,ESD0402-240E2R5,SMDJ400A-AT,TPSMB110CA,ESD08V88D-C,SMCJ220CA,5.0SMDJ64CA-AT,5.0SMDJ80A,SMCJ440A-AT,10SMBJ40CA,5.0SMDJ80C,P4KE SERIES,SMD1206-075-16V,TP5.0SMDJ33A,15KP22CAS,UN2E8-90MSMD,5KP36C,5KP36A,UN135-200,SMCJ170CA-AT,UN3220-511H,ESD05V88D-2LA,SMAJ18CA,SA17CA,UN3E6-470MM,1.5KE170CA,25D122K,5KP90CA,5.0SMDJ160CA-AT,TPSMCJ40CA,SMF,TPSMAJ13CA,UN3E5-XXXL,3KP45CA,07D301K,10SMBT28A,SMD1210-075,UN1812-120H,TPSMBJ20CA,3KP58CA,K2600SD1,TPSMBJ40A,1.5SMC440A,UN3E6-350MM,07D431K,10D471KJ,UNS3220-180K,UN2E8-600MSMD,P6SMB520A,UNS2K SERIES,UN1812-121H,20D911KJ,SMAJ440CA-AT,20D511KYC,P6SMB16CA,P6KE500C,UN250-250,P6KE500A,SMBJ90C,15SMBJ9.0A,UN2220-470HS,ESD12V12D-A,SMBJ90A,ESD12V12D-C,UN3E8 SERIES,SMBJ12CA,TP5.0SMDJ30A,TPSMAJ26CA,UNA SERIES,SMD1210-050,PESD0603E18V,SMDJ11CA-AT,UNS3220-181K,SMBJ5.0A,SMBJ350CA-AT,SMBJ5.0C,TCF03025FH35002A,UN1206-270H,SMD0805-075,UNC-SMD SERIES,20D220K,SMBJ9.0,ESD15V52D-LAF,5.0SMDJ180A-AT,PESD0603E15V,SMD1210-020,UN1210-760H,UN3E8-75HSMD,6.0SMAJ,UN0402E SERIES,UN6-250,TP5.0SMDJ36A,SMBJ58A-AT,SMDT58CA,P4SMA47CA,ESD24V32D-C,UN3E6-230MM,ESD24V32D-A,SMD1210-035,UN2E5-XXXLL,ESD0402-5R5E500,SMD1210-005,07D560K,SMBJ85A-AT,20D,UN250,PXXXXDM,P4KE400A,MCM3216B121,P4KE400C,PXXXXTB SERIES,40D431KJ,ESD03V32D-LCD,10D101K,TPSMBJ33CA,ESD03V32D-LCA,SMCJ90CA-AT,SMD0805-050,ESD03V32D-LCC,07D561K,10SMBJ18CA,TPSMDJ12CA,P6KE27CA,SMBJ30CA-AT,SMCJ120A-AT,PXXXXEC,5KP33A,SMCJ16CAS,UN1210-200BSMD,PXXXXEA,10D102K,34S1000J,PXXXXEB,14D911K,20D221K,SMD1210-150-12V,07D821KJ,SMD1210-010,5KP33C,TPSMA6J13A,20D470KJ,UN2E8-150M,SMDT45CA,15SMBJ17CA,TPSMA6J13CA,SMAJ14A-AT,10SMBT33A,SMD0805-035,ESD05V32D-A,UNB-201N-SMD,TPSMA6J14A,SA9.0,UN3E6-350M,POE SERIES,UN135-1100-S,TPSMBJ33A,SMD0805-020,UN3E8-75H,10D112K,UN135-1100-C,UNB-181N,ESD05V88D-CDN,UN2E8-150H,14D561K,TPSMB91CA,TPSMAJ SERIES,TPSMA6J15A,ESD08V52D-HA,TPSMBJ36A,SMCJ7.5C,SMCJ7.5A,SMAJ400A,SMF19CA,UN3E5-150L,SA90A,UN1812 SERIES,SA90C,10D241K,SMD0805-010,10SMBJ180A,14D431K,LCDA05C-8,LCDA05C-4,25D,P6KE220CA,SA40CA,ESD05V32D-C,HCM1012GD900B05,10SMBT7.5A,ESD05V88D-CBP,10D821KEC,SMD0805-005,UN2E8-150ML,UN1812-760HS,ESD05V88D-CBD,SMCJ64A-AT,SMBJ48CA-AT,P3800TB,TPSMBJ30A,P3800TA,SMDJ90,UN3220-471HS,P6KE100CA,5KP28C,SMDT7.0A,P6SMB SERIES,5KP28A,14D681KJ,TPSMA100A,P3800SC,P3800SB,SMDJ85,6.0SMAJ54CA,ESD30V12D-C,P3800SA,ESD30V12D-A,SMDJ80,SMAJ8.5CA,SMAJ180C,SMAJ180A,UN2E5-90LSMD,TP5.0SMDJ40A,SMDJ75CA-AT,20D122KJ,10SMBT36A,ESD3.3V04D-LC,SMAJ350CA-AT,14D361KSC,5.0SMDJ220A,SMDJ78,UN30-160,UN16-900,ESD05V08P-LC,SMDJ75,25D121K,5KP8.0C,14D561KJ,SMDJ70,5KP8.0A,UN2K8-450L,1.5SMC10A,UN0805-420H,TPSMA6J26CA,SMDJ16CA,SMCJS SERIES,14D560K,SMBJ130C,SMBJ130A,5.0SMDJ350A,SMDJ64,SMDJ60,34S210J,5KP120CA,ESD12V52D-CF,30KP120A,UNS3220 SERIES,SMDJ43A-AT,SMDJ58,UN30-185,SMDJ54,P6KE75,10SMBJ7.0CA,SMDJ51,UN2E5-3600LL,20KP132A,SMAJ160CA-AT,10SMBT7.0A,UN2K8,P6KE62CA,UN30-135,SMDJ48,P6KE68,SMDJ45,SMDJ43,UNB-401M,SMDJ40,TPSMA36CA,P6KE82,ESD15V02D-CKN,5.0SMDJ78C,SMCJ7.0C,SMDT7.5A,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,5.0SMDJ48CA,UN111B339HWA1DFL,15KP51A,TPSMDJ,SMDJ36,SMDJ33,25D751KJ,P4SMA220A,SMDJ30,10SMBJ60A,P6KE91,KB-380,SM8Z26A,ESD3.3V12D-A,ESD3.3V12D-C,SMD1812-200-16V,TPSMCJ,UN2H8-5000LL,SMDJ28,5KP8.5C,SMDJ26,5KP8.5A,SMDJ24,UN2K8-600,SMDJ22,SMDJ20,UN1210-151H,SMD0805-110-12V,SMBJ11A-AT,07D331KJ,ESD0402M,UN16 SERIES,14D751KSC,SMD1812-300-16V,SM8Z28A,SMDJ19,ESD12V52D-HA,SMDJ18,SMDJ17,SMDJ16,TPSMB10J16CA,SMDJ15,TPSMBJ,SMDJ14,TPSMB56CA,SMDJ13,SMDJ12,SMDJ11,SMDJ10,SMCJ36A,SMD0805-010-30V,P6KE30,32D621KJ,SMCJ36C,SA190CA,5.0SMDJ75C,5.0SMDJ75A,UNA-SMD,15SMBJ160CA,SMF54CA,TPSMA6J18A,P4SMA91A,P6KE27,TPSMAJ,P6SMB170A,P0300DM,UN1812-390HS,P6KE24,P6KE22,P6KE43,SMCJ45CA,UN3E8-200HSMD,UN0603E,P6KE75CA,P0300EA,P0300EB,P0300EC,P6KE39,TPSMA6J19A,UN2H8,P6KE36,TCF03025U12002A SERIES,P6KE33,10SMBJ64A,SMCJ58CA,P6KE51,TPSMBJ110CA,SMDJ180CA-AT,25D511KJ,SMD1206-300,SMDJ7.5CA,TPSMA75A,UN1812-270HS,5.0SMDJ17A-AT,1.5KE18CA,14D201KJ,UN30-110,BLC03C-4,UN2K8-350L-2,5.0SMDJ70CA,UN2E5,UN2K8-350L-1,SMCJ33A,P6KE47,SMCJ33C,TPSMA6J16A,UN2E8,UN2E8-150HL,P4SMA350A,P6KE62,P4SMA6.8CA,ESD03V23T-LC,ESD03V23T-LA,ESD08V52D-A,15SMBJ180A,14D301K,10SMBT30A,P6KE56,ESD08V52D-C,TPSMA6J17A,5.0SMDJ33CA,UNS3K,UN2E6-SMD SERIES,UN1812-390H,TPSMDJ24CA,20D361K,40D361KJ,4.0SMF13CA,SMDJ160A,SMBJ160CA-AT,TP5.0SMDJ28A,

选型指南 - 优恩半导体 PDF 英文下载

优恩半导体（UN Semiconductor）于1994年成立于台湾，专注于ESD静电保护、雷击浪涌保护器件及串口芯片，设有专业的EMC测试整改中心。优恩半导体的ESD、TVS、GDT、MOV、放电管、通信芯片等产品广销全球20多个国家。

ESD静电二极体（ESD）瞬态抑制二极体（TVS）陶瓷气体放电管（GDT）半导体放电管（TSS）玻璃放电管（SPG）压敏电阻（MOV）贴片压敏电阻（MLV）自恢复保险丝（PPTC）熔断保险丝 RS485通讯芯片 RS232通讯芯片 CAN通讯芯片电源保护模组信号保护模组防雷型RJ45网路连接器高速静噪虑波器磁珠高压整流二极体小信号肖特基二极体小信号开关二极体稳压二极体 MOS管双极型电晶体电源管理芯片电源隔离模组信号隔离模组

授权代理商 - 深圳市世强元件网络有限公司线上商城技术资料

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ESDXXV32D-C Series Transient Voltage Suppressors for ESD Protection

型号- ESD03V32D-C,ESD15V32D-C,ESD12V32D-C,ESD24V32D-C,ESD36V32D-C,ESDXXV32D-C SERIES,ESD05V32D-C,ESD18V32D-C,ESD48V32D-C,ESD08V32D-C,ESDXXV32D-C

数据手册 - 优恩半导体 - Revision March 1,2022 - March 1,2022 PDF 英文下载查看更多版本

优恩半导体TVS瞬态电压抑制二极管选型表

优恩半导体提供以下技术参数的TVS选型：反向截止电压：3.3V~440V；击穿电压（min）：5.2V~492V；击穿电压（max）：6V~543V；测试电流：1mA、5mA、10mA；最大钳位电压 VC @IPP (V)：8V~713V；最大峰值脉冲电流IPP (A)：0.56A~3000A；最大反向漏电流IR @VRWM (μA)：1uA~1000μA；关断电压：10V~85V；最大反向浪涌电流IPP(A)：48A~388A；最大IR @VRWMTJ=175(uA)：150uA、250uA。

产品型号	品类	Reverse Stand-Off Voltage VRWM(V)	Breakdown Voltage VBR (V) @IT MIN	Breakdown Voltage VBR (V) @IT MAX	Test Current IT (mA)	Maximum Clamping Voltage VC @IPP (V)	Maximum Peak Pulse Current IPP (A)	Maximum Reverse Leakage IR @VRWM (μA)	model
8KP24A	Axial Lead Transient Voltage Suppressors	24	26.7	29.5	1	38.9	206	5	Uni

选型表 - 优恩半导体立即选型

【技术】解析贴片自恢复保险丝的主要缺陷

PPTC自恢复保险丝有插件式与贴片式，这两种保险丝或多或少都存在一些缺陷，本文优恩半导体就将为您介绍贴片自恢复保险丝的主要缺陷。实际上，贴片自恢复保险丝比较大的一个缺陷点是它不能够代替快速熔断器。

技术探讨发布时间 : 2023-01-14

SMBJ Series 3.3 To 440V 600W Surface Mount Transient Voltage Suppressors (TVS)

型号- SMBJ30,SMBJ,SMBJ220CA,SMBJ51C,SMBJ8.5CA,SMBJ51A,SMBJ75C,SMBJ75A,SMBJ160C,SMBJ160A,SMBJ70CA,SMBJ28,SMBJ26,SMBJ24,SMBJ22,SMBJ20,SMBJ40C,SMBJ78CA,SMBJ40A,SMBJ17CA,SMBJ64C,SMBJ64A,SMBJ43CA,SMBJ19,SMBJ20CA,SMBJ17,SMBJ18,SMBJ15,SMBJ16,SMBJ13,SMBJ14,SMBJ11,SMBJ12,SMBJ10,SMBJ160CA,SMBJ7.0C,SMBJ7.0A,SMBJ180,SMBJ85C,SMBJ85A,SMBJ28CA,SMBJ150C,SMBJ54CA,SMBJ18C,SMBJ18A,SMBJ300A,SMBJ150A,SMBJ150CA,SMBJ190,SMBJ6.0CA,SMBJ16CA,SMBJ80CA,SMBJ19C,SMBJ100CA,SMBJ19A,SMBJ6.5C,SMBJ160,SMBJ6.5A,SMBJ16C,SMBJ140C,SMBJ16A,SMBJ28C,SMBJ28A,SMBJ5.0,SMBJ140A,SMBJ170CA,SMBJ400A,SMBJ8.0C,SMBJ170,SMBJ8.0A,SMBJ60C,SMBJ60A,SMBJ440CA,SMBJ15CA,SMB75,SMBJ64CA,SMBJ17C,SMBJ17A,SMBJ250A,SMBJ120CA,SMBJ140,SMBJ26CA,SMBJ400CA,SMBJ14C,SMBJ14A,SMBJ26C,SMBJ75CA,SMBJ6.5,SMBJ26A,SMBJ6.0,SMBJ90CA,SMBJ110CA,SMBJ7.0CA,SMBJ130C,SMBJ130A,SMBJ150,SMBJ70C,SMBJ7.5A,SMBJ14CA,SMBJ70A,SMBJ7.5C,SMBJ40CA,SMBJ15C,SMBJ15A,SMBJXXXXX,SMBJ120,SMBJ9.0C,SMBJ9.0A,SMBJ48CA,SMBJ11C,SMBJ12A,SMBJ36C,SMBJ51CA,SMBJ24C,SMBJ7.5,SMBJ36A,SMBJ24A,SMBJ48C,SMBJ48A,SMBJ7.0,SMBJ130CA,SMBJ120C,SMBJ350A,SMBJ120A,SMBJ3.3A,SMBJ6.5CA,SMBJ130,SMBJ80C,SMBJ13CA,SMBJ80A,SMBJ12C,SMBJ36CA,SMBJ13C,SMBJ13A,SMBJ85CA,SMBJ8.0CA,SMBJ100,SMBJ90,SMBJ8.5C,SMBJ24CA,SMBJ8.5A,SMBJ45C,SMBJ33C,SMBJ190A,SMBJ58C,SMBJ22A,SMBJ58A,SMBJ8.5,SMBJ8.0,SMBJ190C,SMBJ110A,SMBJ110C,SMBJ300CA,SMBJ110,SMBJ85,SMBJ80,SMBJ90C,SMBJ90A,SMB30CA,SMBJ12CA,SMBJ10C,SMBJ10A,SMBJ22C,SMBJ58CA,SMBJ11A,SMBJ SERIES,SMBJ220A,SMBJ350CA,SMBJ180CA,SMBJ78,SMBJ5.0A,SMBJ5.0C,SMBJ70,SMBJ43C,SMBJ43A,SMBJ180A,SMBJ7.5CA,SMBJ9.0,SMBJ180C,SMBJ100A,SMBJ64,SMBJ100C,SMBJ60,SMBJ19CA,SMBJ11CA,SMBJXXXCA,SMBJ20C,SMBJ20A,SMBJ45A,SMBJ33A,SMBJ9.0CA,SMBJ60CA,SMBJ58,SMBJ54,SMBJ440A,SMBJ51,SMBJ22CA,SMBJ45CA,SMBJ200CA,SMBJ78A,SMBJ170C,SMBJ170A,SMBJ10CA,SMBJ48,SMBJ45,SMBJ190CA,SMBJ43,SMBJ40,SMBJ6.0C,SMBJ6.0A,SMBJ30C,SMBJ33CA,SMBJ30A,SMBJ18CA,SMBJ54C,SMBJ250CA,SMBJ54A,SMBJ78C,SMBJ200A,SMBJ36,SMBJ33,SMBJ140CA,SMBJ5.0CA

数据手册 - 优恩半导体 - Revision March 1,2022 - March 1,2022 PDF 英文下载

【技术】自恢复保险丝多久熔断？

自恢复保险丝（PPTC）常用于电路的限流保护中，其工作原理是在电路故障发生时立即熔断，以避免电路的进一步损坏。本文优恩半导体将介绍自恢复保险丝多久熔断？

技术探讨发布时间 : 2023-05-13

优恩半导体ESD、PPTC、GDT用于CAN总线浪涌保护，可大幅缩减单板占用体积

优恩半导体在本文将对CAN总线浪涌保护之自恢复保险丝选型进行详细的讲解，为工程师们的设计提供理论基础。

原厂动态发布时间 : 2021-09-21

SMD1812 Series Surface Mount Resettable PTCs

型号- UN1812-110,SMD1812-200,UN1812-075,SMD1812-160,UN1812-010,SMD1812-110/33V,SMD1812-260,SMD1812-020,SMD1812-300,SMD1812-125,SMD1812-075/24V,SMD1812-125/16V,SMD1812-260/12V,SMD1812-050/33V,SMD1812-200/16V,SMD1812-260/16V,SMD1812-XXXX/X,SMD1812-200/12V,SMD1812-150/24V,SMD1812 SERIES,SMD1812-150/16V,UN1812-200,SMD1812-010,UN1812-300,SMD1812-110,SMD1812-110/24V,SMD1812-050,SMD1812-150,UN1812-260,SMD1812-030,SMD1812-075,SMD1812-014,SMD1812-075/33V,SMD1812,SMD1812-110/16V,SMD1812-010/60V,SMD1812-050/24V,SMD1812-014/33V

数据手册 - 优恩半导体 - Revision: March 1,2022 - March 1,2022 PDF 英文下载查看更多版本