【技术】自恢复保险丝的选型的6大技巧

2022-09-09 全业电子
自恢复保险丝,PPTC,全业电子 自恢复保险丝,PPTC,全业电子 自恢复保险丝,PPTC,全业电子 自恢复保险丝,PPTC,全业电子

自恢复保险丝选型一直是人们关注的问题。好的选择可以使产品更有效、更长期地运行,确保产品的安全性和长期性。因此,今天全业电子将简要介绍自恢复保险丝选型及选型注意事项。



众所周知,自恢复保险丝是一种由聚合物有机聚合物组成的过流电子保护装置,主要在高温、高压等硫化反应条件下加入导电颗粒材料。一般我们会把PPTC叫做自恢复保险丝,它的作用主要是用来在电路中做过流保护作用。所以自恢复保险丝会有保持电流、动作电流、最大电压、最大电流等等主要参数。而自恢复保险丝选型要根据产品的电流电压等参数值来选择合适的自恢复保险丝,因此,自恢复保险丝的选型需根据以下六点。


自恢复保险丝选型技巧一:确定参数。首先,我们应根据受保护电路中正常工作的最大环境温度、正常工作电流和最大工作电流、受保护电流的大小和动作时间选择合适的自恢复保险丝;


自恢复保险丝选型技巧二:形状的确定。自恢复保险丝分为两种外观形式:插件和贴片。在选择类型时,应根据受保护电路或产品的特点选择合适的自恢复保险丝是插件保险丝还是贴片保险丝;


自恢复保险丝选型技巧三:确定耐压值。根据最大工作电压或等于最大工作电压的产品系列;


自恢复保险丝选型技巧四:确定适当的维护电流。根据电路的最大环境温度和电路中的工作电流,根据自恢复保险丝的温度折叠率选择合适的产品规格;


自恢复保险丝选型技巧五:确定产品所需的动作保护时间。根据产品型号的自恢复保险丝动作时间曲线图,确产品所需的保护时间;


自恢复保险丝选型技巧六:确定产品尺寸。根据产品需要选择合适的产品规格;


总结:所以通过以上内容我们可以看出,只要是根据上面六步进行选型,在复杂的电路也能选出合适的型号自恢复保险丝,最终确定合适的产品。


自恢复保险丝选型注意事项:


(1)维持电流:在选型过程中,PTC的维持电流应大于线路的正常工作电流,但是,也不能太大,否则当电路中有异常过电流流过时,反应慢,在要求的保护电流下没有动作,达不到预期的保护效果;也不能太低,否则PTC会误动作,会影响PTC的使用寿命和线路的正常工作。PTC维持电流这个度,要掌控好,具体可以咨询专业的技术人员。


(2)最大工作电压:PTC的最大工作电压要大于等于被保护电路中的电压,否则容易失效。


(3)工作环境温度:自恢复保险丝对温度极其敏感,在较高的工作环境温度下,PTC的维持电流要降额选取,具体可以联系我们获取PTC规格书。


(4)封装形式:PTC有插件封装和贴片封装2大类,贴片器件功率等级相对于插件器件而言,会小一些;


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
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本文由赵浩亮转载自全业电子,原文标题为:自恢复保险丝选型技巧篇(干货分享),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- company profile    PPTC Resettable Fuse Basic Characteristics    One Time SMD Fuse Base Characteristics    PPTC Resettable Fuse Series    One Time Fuse Series    ESD Suppressor Series    PPTC Resettable Fuse Cross Reference    SMD Solder Reflow Recommendations    SMD FUSE Cross Reference   

型号- FSMD110-1206R,SMD0805P110SLR,SMD0603P075SLR,SMD1812P300SLR,06 110,FSMD300-2920-R,1812L350SL,MICROSMD075F,RLD16P600GF,SMD1812P150TF/8,SMD1210P400SLR,FSMD075-R,FSL450LF-N,RXEF030,TLC-NSML750,TRE055,MICROSMD050F,MF-NSML700,FSMD150-12R,FRVL017-120F,FSMD370RZ,16R1100G,TLC-USML600,SMD1206P700SLR,TRE050,SMD0805P010TF,60R160,0603L150SL,MF-RX012/250U,06 100,RLD16P185BF,RLD30P090UF,1812L700SL,RLD30P135UF,72R090X,TLC-NSML500,RXEF040,SMD1812P850SLR,MINISMDC110F/16,12 100 1.5,RGEF800,MF-MFMF160,TLC-MSMD150,MF-USMF005,FRH110-250VF,FRU135-30F,FRH080-250VF,TRE040,LVR055S,PICOSMDCHOS,MF-LR190,30R090,MF-R500,TRA1400,MXP370,TRF600-160,FSMD200-1210RZ,FRK065-60F,TRB SERIES,FSMD110-24R,RUSBF185,FSMD050-1210-R,SLD270,RXEF250,TRE035,MF-MFMF150,FEMTOSMDC020F,TLC-MSMD160,SMD1210P005TF,TLV310,RXEF017,FRVL075-120F,TRC090,FSMD500RZ,RLD72P050XF,TRE030,SMD1812P050TF,RXEF010,TLV550,RLD60P375XF,PICOSMDC200LR-T,FSMD110-1206RZ,TLC-FSMD050,NSMD/L1206,FRG1200-16F,TRA900,15LR550,RXEF020,1210L380SL,TRE025,FRK250-60F,TLV300,SMD2920P050TF,12 113 0.25,RXEF025,TLC-NSML380L,TLC-LSMD500,TLC-MSMD020/60,TRE020,LVR033S,MXP190,RUSBF160,PICOSMDCOIOS,SMD0805P200SLR,TVS SERIES,60R375,SMD2920P185TF,FRU160-30F,60R135,NANOSMDC150F,TRC075,1210L200,FRVL025-120F,TRE010,TRF100,SLD250,TLC-NSML550,TRE017,TRE015,RLD16P500GF,FLR260F,1812L450SL,TLV730,TRE250,FRG700-16F,FSMD450-1210RZ,MF-S420,FRVL010-120F,TLC-MSMD110,MXP180,FSMD160-16R,RUSBF155,TRG SERIES,RUEF160,FSMD035-0805-R,FSMD020-R,TLC-NSML300,TRC065,SMD1206D012TF,FSMD175-1210RZ,PICOSMDC020S,RXEF005,1812L800SL,MF-RX014/250,LVR075S,SMD2920P030TF,SMD300F,SMD1206D110TF,FSMD020-1210-R,TLC-MSMD125,FRVL300-120F,FRV025-240F,MF-R300,MSML1812,TRA1200,60R110,FSMD110-16-R,FSR175F,FSMD020-0402RZ,MINISMDC110F/24,FSMD260-1210RZ,MF-MSML270,FSMD200-1210R,TRC050,FSMD250-2920-R,NSML1206,RUSBF135,SMD2920P150TF,MF-RX160/72,TLC-USMD075,MF-NSMF150,12 113 2.5,0805L110SL,LR4260F,TAL190S,MF-MSML260,TAL190N,RUEF185,TRC040,HVR250P080CF,FSMD050-0402RZ,1812L500SL,SMD1206P600SLR,FSMD010-0805-R,FRU250-30F,TLC-MSML700,SMD1210P300SLR,TLC-MSMD110/24,RUSBF120,RGEF400,HVR250P180CF,TRF018U,TLC-PSMD024,TRC030,1206L380SL,TRB185,TLC-PSMD020,SMD1812P400SLR,RLD06P075BF,FSMD012-1206-R,TLS420,TRA090,RGEF1100,TLC-NSML450L,12 100,1206L260SL,SMD2920P250TF,MF-USML190,SMD100F/33,RUEF800,FSMD160-12R,FSMD075-0805RZ,LRD550F,RUSBF110,TLC-MSMD110/16,MF-PSML175,TRC020,TLC-PSMD035,TRE200,TLC-USMD050,TRC025,12 113 0.375,SMD1206D150TF,3GK SERIES,3GM-C,FSMD175-1210R,MINISMDC300F,1812L270SL,FRV033-240F,TRC017,MF-R900,30R250,MF-MFMF020/60,PICOSMDC050S,MF-RX090/72,TLC-USMD020,TRC250,TRA075,TRC010,16R300G,FRVL375-120F,SMD1210P260SLR,15LR380,MF-R090-0-9,FRV016-240F,TLS200,12 110 1.5,TRB160,TAL250,MF-PSML150,TRM150,SMD125F,MF-USML175,TRC005,FRG600-16F,RLD16P700GF,TLC-PSMD010,TRA065,12 113 0.5,MF-NSMF110,RLD30P300UF,TLC-USMD035,MINISMDC075F/24,SMD1812P900SLR,RLD60P090XF,RLD60P135XF,TLC-LSMD300/24,TAL260,0805L1750SL,06 100 0.375,MF-RX012/250,TLC-MSML900,1812L150/24,FSMD020-60-R,MF-USML380,SRP 2000F,TRA050,USMD1210,LR4190F,TLC-USMD005,LSMD2920,1812L600SL,MF-RX025/72,TRM SERIES,TAL270,ASML0402,1812L150/12,STD120F,SMD1206P175SLR,FSMD075-24R,TLC-NSML700,TRA040,1210L175SL,FRG1300-16F,FSMD270RZ,RGEF600,TLC-PSMD075,FLR190F,TRB135,TRM125,TLC-USMD010,TD350-1,TD350-2,FSMD160-R,1210L260SL,TAL280,SMD1210P075TF,FRV008-240F,FSMD600RZ,MF-R700,RLD72P300XF,FSMD050-2920-R,FSMD260-24-2920-R,1812L370SL,TRA030,TRB120,RXEF 300,0603L050SL,12 110 3.5,TLC-USML190,RLD16P800GF,RLD30P400UF,60R185,TLC-PSMD050,TRA025,SMD1206P550SLR,3GF SERIES,1206L175SL,TRA020,06 110 2.5,RLD16P250BF,TLV900,TRB110,FSMD260R,12 113,TRM100,12 110,FRG300-16F,SMD1812P650SLR,MF-S175,TVS175N,SMD1206P260SLR,TLC-LSMD050,FSMD014-R,SMD1812P075TF/24,TRA017,MF-PSML200,STD175F,FRVL065-120F,TLC-PSML380,TLC-FSML100,15ST175,FSMD400-1210RZ,TRA250,NSMLXXXL1505,2920L050,TLC-MSML300,TRA010,PC01050,12 110 4.5,TVS210,72R375X,TLC-NSML190,TLC-USMD200,MF-NSML260,TLC-NSML400L,TLC-PSML150,MINISMDC010F,MF-RX110/72,SMD1812P075TF/33,USML1210,06 100 0.5,16R700G,TRA005,NANOSMDC200F,TLV190L,1206L300SL,TLC-FSML110,TLC-MSML550,SMD1206P500SLR,1210L075,FSMD050-1206-R,FRU090-30F,TVS200,MF-MSML600,TLC-USML175,MF-R090,RLD60P160XF,SMD0805P150SLR,TLC-LSMD075,RLD06P155BF,FLR550F,MF-R065,MICROSMD005F,TLC-USML380,FSR200F,SMD1206P650SLR,SMD1812P260SLR,RLD16P1200GF,SMD1210P600SLR,TRF250-145U,MF-RX065/72,2920L030,RLD16P900GF,PICOSMDC035S,FSML0603,TLC-NSML175,250R120,FRVL100-120F,VTD210F,RLD06P120BF,FSMD190RZ,72R020X,MF-R075,SMD0805P300SLR,SMD260F,SMD1206P110SLR,1812L300SL,0805L075SL,FSMD075-2920-R,TLC-USML150,TVS230,MF-USML450,TRF250-120U,MICROSMD200F,0805L260SL,SMD1210P750SLR,LRD730F,TLC-NSMD200,30R300,RLD72P110XF,MF-USML200,1210L550SL,RUEF300,TLC-LSMD260/24,TAL410,MF-LSMD185/33X,FSL270F-N,MF-RX375/72,TLC-LSMD250,TRF014U,SMD1206P350SLR,FSR420F,TLC-NSMD035,30R500,TLC-FSML150,FSMD035-0603RZ,TLC-MSML500,TRB300,MF-USML650,MF-LR730,LVR008S,1812L200,MF-MSMF030,PICOSMDC260LR-T,FSMD125-R,MF-LL190,250R145,TVS170N,MINISMDC014F,MSMD/L1812,FSMD100-2920-R,PICOSMDC075S,TLC-NSMD020,TLC-NSM

选型指南  -  竞沃  - REV. 1  - 2020/7/29 PDF 英文 下载

过流保护器件自恢复保险丝PPTC的优点是什么?

自恢复保险丝优点:自恢复保险丝常温零功率电阻可以作得很小,大电流产品只有几个毫欧姆,在路功耗较小,可以忽略不计、体积相对较小。自恢复保险丝可串联在易损电路内作过流保护、温度保险丝用,阻值突变速度快,在几个ms数量级,热容小,恢复时间短,耐冲击,可循环保护达8000次之多。自恢复保险丝可以作过温度保险丝用,因此在电路中在一定程度上体现出了温度保险丝性能和温度保险丝作用。达到在电路中实现过流保护和过温保护的双重保护功能。

技术问答    发布时间 : 2024-07-30

【应用】PPTC和TVS应用于RS-485接口过流和浪涌保护,有效防止电路损坏

通常,对于4KV以下过电压,可以省去初级保护—GDT。单用TVS就能实现浪涌保护的要求。一般TVS可选用电安科技的TVSSMBJ6.5CA、SMCJ6.5CA,视浪涌能力而定。当RS485总线安装错误或与电力线搭接短路时。

应用方案    发布时间 : 2021-12-25

【选型】国产自恢复保险丝用于IPC客流摄像头电源输入过流防护设计,2920封装,待机功耗0.065~0.41W

为避免IPC客流摄像头电源输入因负载短路异常造成燃烧风险,一般在电源输入加一颗自恢复保险丝做过流保护设计,推荐选择竞沃电子自恢复保险丝TLC-LSMD100,2920封装,最大额定工作电压33VDC,常温25℃下保持电流1A,可承受最大故障电流40A。

器件选型    发布时间 : 2023-02-08

什么是自恢复保险丝?

自恢复保险丝是一种过流电子保护元件,采用高分子有机聚合物在高压、高温,硫化反应的条件下,搀加导电粒子材料后,经过特殊的工艺加工而成。自恢复保险丝(PPTC:高分子自恢复保险丝)是一种正温度系数聚合物热敏电阻,作过流保护用,可代替电流保险丝。 电路正常工作时它的阻值很小(压降很小),当电路出现过流使它温度升高时,阻值急剧增大几个数量级,使电路中的电流减小到安全值以下,从而使后面的电路得到保护,过流消失后自动恢复为低阻值。 传统保险丝过流保护,仅能保护一次,烧断了需更换,而自恢复保险丝具有过流过热保护,自动恢复双重功能。在习惯上把 PPTC(PolyerPositiveTemperature Coefficent)也叫自恢复保险丝。其效果与开关元件类似,只是响应速度较慢。

技术问答    发布时间 : 2024-07-30

【选型】竞沃(TLC) 过流保护产品(PPTC/FUSE/ESD/CSR/TVS)选型指南(简版)

目录- PPTC自恢复保险丝产品    一次性保险丝产品    Power TVS与ESD半导体静电抑制器    ESD静电抑制器与电流感测电阻CSR    TLC产品应用领域   

型号- 04 100,06 110,SMDJXXA,SMBJXXA,0402,PC01,PSMD 0805,HV610,LMMT0,12 100,HFM0,TLV SERIES,HV110.PV,PTN102H05B,TAL SERIES,06 100,USML1210,TD SERIES,LCT0,LSMD 2920,PTN102U05B,HET0,HV620,SMDJXXCA,BEV7,BEV5,PSML0805,TRB SERIES,TRA SERIES,TRE SERIES,HEET0,USMD 1210,PB01,FSML0603,HV510,HV630,HV110,MSMD1812,PTN205U05A,TLS SERIES,62720,EV1845,TRF SERIES,10800,ESDAC05,NSMD1206,HV520,SMFXXCA,12110,TVS SERIES,SMAJXXCA,42510 ESD-LVC,5.0SMDJXXCA,NSMD 1206,SMFXXA,USMD1210,06100,LMJ12,HV530,LSMD2920,LMJ10,12113,HV650,SMBJXXCA,SRC39,ANL SERIES,SMAJXXA,0603,TRM SERIES,PTN062H05B-M,62 720,PTN2510U05A,ASML0402,TRG SERIES,SRC25,MSMD 1812,HCT0,LET0,NSML***L1505,SMCJXXA,LMT0,LMJ25,HFMM0,MSML1812,SMCJXXCA,TRC SERIES,04100,PSMD0805,FSMD0603,FSMD 0603,SRC59,10 800,NSML1206,5.0SMDJXXA,PVAH1U,2410,06110,12 113,12100,12 110

选型指南  -  竞沃  - REV.1  - 2018年 PDF 中文 下载

全业电子(QY Semiconductor)PPTC自恢复保险丝选型指南

目录- Surface Mount Resettable PTCs    Radial Lead Resettable Polymer PTCs   

型号- SMD1812-030-33V,SMD1812-020-60V,JK60-025,SMD2920-700L,SMD1206-005,SMD1812-014-33V,SMD2920-260L-24V,JK60-030,JK30-090,SMD1210L550-12V,SMD0603 SERIES,SMD1206-350,JK135-1600,JK16-1400,SMD1206-110,SMD1812-075,JK16-800,JK60-135,SMD2920-050L,JK60-017,SMD1206-005-24V,SMD2016-050,SMD0805-035-16V,SMD1210L260-12V,SMD1210L700,JK60-020,JK250-600,SMD0603L SERIES,JK135-1850,SMD1812-160,SMD1210-110-12V,SMD1206-100,JK600-200,JK60-005,JK30-065,JK60-250,JK30-075,JK60-010,JK60-375,SMD2920-400L-24V,SMD1206L-150-12V,SMD1206-110-16V,SMD1210L600-12V,SMD1812-050,SMD1210L380-12V,JK16-700,SMD1210-005-13.2V,SMD0805-050-12V,SMD0805-050-24V,SMD1206-035-30V,SMD1206L-400-12V,SMD0805L175-12V,SMD2016-075,JK250-145T,SMD1812-110-33V,JK250-1100,JK250 SERIES,SMD1206L-200-12V,JK60-075,JK135-080,JK250-1350,JK250-120T,SMD2920 SERIES,SMD1206-150,JK250-120S,SMD1206-035,SMD1206-050-30V,SMD2920-600L,SMD0805-035-12V,JK60-065,JK60-185,JK250-800,JK16-600,SMD1812-050-60V,SMD0603-002-9V,JK135-2500,SMD1206-020,SMD1206-260,SMD1206-025,SMD2920-500L,JK60-050,JK135 SERIES,JK250-120C,SMD1812-200-24V,JK135-060,SMD0603-003-9V,SMD1206-110-24V,SMD1206-010,SMD1206L-350-12V,SMD1812-110-24V,SMD0805-020-16V,SMD1206-020-48V,SMD1206-012,SMD1206-016,SMD2016,SMD2018,SMD0603-025-16V,JK60-160,JK60-040,JK6 SERIES,SMD1206-075-16V,SMD1210-200-16V,JK16-500,JK250-900,SMD0805L150-12V,JK30-800,JK60-300,SMD0603-075,SMD0603-010-24V,JK250-330,SMD1206-035-16V,SMD0603L200,JK16-090,JK6-090,SMD1206-025-30V,SMD1812-020-33V,JK135-3500,SMD1812-150-16V,SMD1206-075,SMD0805L300-12V,SMD1812-110,SMD1812-350,SMD0603-065,JK250-180S,SMD0603-060,SMD1206L-550-12V,SMD1210-075,SMD1206L-600-12V,JK30-900,SMD1812-200,SMD0805L200-12V,JK135,JK250-550,SMD0603-050,SMD0603L100,JK250,JK250-180C,SMD1812 SERIES,SMD1210L350-12V,SMD0805-035-13.2V,JK250-1000S,SMD2920-250L,SMD0603-040,JK250-300,JK250-1000C,SMD1210-050,SMD1206-050,SMD1210-175,SMD1210-005-60V,SMD1206L-500-12V,SMD1210L500-12V,SMD2920-200L-33V,SMD1812-260,JK6-050,SMD1210L190,SMD0603-035,SMD1812-020,SMD2920-150L,SMD1812-125-8V,JK30-600,SMD0805-075,JK250-650,SMD1812-150-24V,SMD 1812-260-16V,SMD0603L125,SMD1206L-150,JK60-110,SMD1210-020,JK135-1000,SMD1210-260,JK6-185,JK6-065,SMD1206 SERIES,SMD1812-150,JK250-1850,SMD0603-025,SMD1206-012-24V,SMD1812-030,SMD2920-260L,SMD0603-020,SMD2920-030L,SMD2018-200,SMD1210L200-12V,JK250-400,SMD2016 SERIES,SMD0805 SERIES,JK135-1250,SMD1210-150,SMD1210-035,SMD1206-075-30V,SMD1210-005,JK6-075,JK250-1600,JK30-700,JK135-900,SMD1210L750-12V,SMD0603-010,SMD2920-075L,SMD1812-125,SMD1210L175,SMD1206,SMD1206L-175,SMD2920-700L-12V,JK250-750,SMD0805-100-12V,SMD2018-100-33V,SMD1210L300-12V,JK135-1100,SMD1812-050-33V,SMD0805-050,SMD2920-200L-24V,SMD1812-010,SMD0603-005,JK16-900,SMD0603-004,SMD0603-003,SMD0603-002,SMD0603-001,SMD2920-185L,SMD1812-014,SMD0805-050-16V,SMD1210L400-12V,SMD0603L,SMD0603L035,SMD1210,JK250-500,SMD1210-150-12V,JK135-1350,J K135-400,SMD1210L650-12V,SMD1210-010,SMD0603L150,JK6-250,JK250-050,SMD1210L150,JK6-135,JK30-400,SMD0805L075,JK135-200,SMD1206L-350,JK16-250,SMD0603-004-24V,SMD0805-035,JK16-135,SMD0805-150,SMD2920-300L-30V,SMD0603-100,JK250-160,SMD1210L380,JK250-040,SMD1210L260,SMD2920-200L,SMD0805-020,SMD1206-016-33V,JK30 SERIES,SMD1210-020-13.2V,SMD1206L-300-12V,SMD0603L175,JK16-120,SMD1210-110,SMD0603L050,JK135-300,SMD0805L260-12V,SMD1210L450-12V,SMD0805L175,SMD0805L075-12V,JK30-500,SMD1210L175-12V,JK250-030,SMD2920-100L,JK600 SERIES,SMD0805-010,SMD1210 SERIES,SMD1210-200,SMD2920-125L,SMD1206-050-16V,JK6-160,SMD2018-100,JK135-550,SMD1812-010-33V,JK250-020,SMD1210L190-12V,SMD1206L SERIES,JK250-145,SMD1206L-380,SMD1210L700-12V,SMD0805-125,SMD0805-005,SMD1206L-260,SMD0603L075,JK135-2000,SMD0805L150,JK135-400,SMD1206-010-24V,SMD1812-300,SMD1206L-300,SMD1210L350,SMD1210-035-16V,JK250-250,JK16-050,SMD0805-110,SMD1206L-550,SMD2018-150,SMD2018-030,SMD0805L260,SMD1206-025-48V,SMD1206-025-24V,JK250-120,JK135-650,JK16-160,SMD2018 SERIES,SMD0805-100,SMD 1210-050-24V,SMD1210L150-12V,SMD0603-020-16V,JK135-500,SMD1206L-450-12V,SMD2016-200,SMD1812-400,SMD1206L-200,SMD1210L450,JK250-110,SMD1206L-175-12V,JK6-110,SMD1812-300-12V,SMD1812-350-16V,JK30-300,SMD1206L-450,SMD1210-035-13.2V,JK16-075,SMD0805L SERIES,JK135-3000,SMD2920-600L-12V,SMD2920-500L-16V,JK6-120,SMD2920-250L-24V,JK60 SERIES,SMD0805L125,JK250-1250S,JK135-750,SMD1210L200,JK16-185,SMD1206-100-16V,SMD0805L,JK250-1250C,JK16-065,SMD0805-075-12V,SMD2018-075,JK135-160,SMD2016-100,SMD0805L110,SMD1206L-500,SMD1210L550,SMD2920,JK6,SMD1206L-260-12V,JK30-250,JK250-2000,SMD1812-030-60V,SMD1210L SERIES,JK135-050,SMD2920-400L-6V,JK16-1000,JK30-135,SMD1210L300,JK16-400,SMD1210-075-16V,SMD1206-150-13.2V,JK600-160,SMD1206-200-12V,SMD1210-020-16V,SMD1812-075-24V,SMD1206L-400,SMD1210L650,SMD1812-200-16V,SMD2018-050,SMD2016-100-33V,SMD2920-500L-12V,JK60-090,SMD2920-300L-16V,SMD2920-400L,JK600-150,SMD0805-110-12V,JK30-110,SMD0805L200,SMD0603,SMD1812,SMD1210-010-13.2V,SMD1812-010-60V,SMD1210L400,SMD1206-100-24V,SMD1812-300-16V,SMD1210L,JK16-300,JK30,SMD0603-005-9V,SMD2920-300L,SMD0805

选型指南  -  全业电子  - 2022/8/31 PDF 英文 下载

竞沃自恢复保险丝关于TYPE-C应用的问题咨询

1:T45(TLC-NSML450)的工作原理:自恢复保险丝,平时工作在额定电流内,正常温度25度环境下,产品的发热与散热平衡,产品内阻不变化,产品正常工作。 如果温度过高的环境下,产品通过的电流导致自恢复保险丝产品内部的发热大于散热,产品内部温度到达居里点,产品内阻变大,从而保护。 2:在什么电流电压下保护:自恢复保险丝是过流产品,电压的变化并不会让自恢复保险丝有保护。 3:受外部加热的影响是否会保护:产品外部的热量对产品有影响,具体看产品的发热与散热是否能达到平衡,如果发热散热平衡,产品不保护,如果发热大于散热,产品就会保护。 4:跳闸后多久能恢复:产品保护后,需要断电一次才能恢复,恢复的时间一般几秒到几十秒就能恢复,具体看通过产品的电流是多大,如果产品还没有完全冷却,就开始通较大的电流,产品很容易进入保护,如果断电几十秒后,通较小的电流,产品正常工作是没有问题的

技术问答    发布时间 : 2024-07-30

解析保护电子电气设备免受损坏的不同方法

本文TOPPOWER深入探讨了保护电子电气设备免受损坏的不同方法,包括传统保险丝、创新型电子自恢复保险丝、断路器、金属氧化物压敏电阻(MOV)、电涌保护器、线路滤波器和线路电抗器。

技术探讨    发布时间 : 2024-07-24

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