面对电路设计中过电流状况,Littelfuse告诉你保险丝和PTC该如何选择!
力特公司(LITTELFUSE)提供创新型电路保护解决方案。力特公司(Littelfuse)的产品无所不在。路灯、办公大楼、汽车、卡车、工厂、计算机、加热和冷却系统、电子游戏、电信设备,甚至连太空卫星也由力特公司(Littelfuse)电路保护产品提供保护。
如果你想成为一名成功的设计工程师,你需要了解你的敌人。谁是你电路设计成功的最大敌人之一?那就是过电流状况。
当电路中的电流超过电路或连接在电路上的设备的额定电流容量时,就会发生过电流状况。无论你是设计汽车、LED照明、还是消费类电子产品,过流状况对你正在开发的技术的可靠性和耐久性而言都是一个威胁。这些情况最有可能在什么时候发生?就是当有某个接触不良,接地故障,短路或浪涌功率消耗时。
既然你了解了你的敌人,那么你如何保护你的设计呢?过电流电路保护可以通过使用传统的保险丝或正温度系数(PTC)器件来实现。
保险丝
保险丝是电流敏感型器件,它们被故意设计成电路中的薄弱环节。它们通过在过电流状况下进行熔断来为分立元件或完整电路提供可靠的保护。
PTC
PTC器件是被动电子元件,它们被广泛应用于各种电信、计算机、消费电子、电池和医疗电子产品中。在这些特别的应用场合,过流事件是常见的并且有自恢复的需求。
图1 Littelfuse公司的PTC
保险丝与PTC的选择
保险丝和PTC均有着自己独特的工作特性和优势。理解这两种技术之间的差异将简化抉择过程——它取决于应用场合。
最明显的区别是,当它们被触发后PTC可以自行恢复,而传统的保险丝则需要进行更换。在大多数过流情况发生之后,保险丝将完全截断电流,这一结果在某些关键应用中可能非常有用。相反地,PTC会大幅增加其阻值从而对过流状况起到保护作用,但仍允许小部分电流通过。
因为它们可以自行恢复,当过流状况可以被预期由用户造成故障而引起时,许多电路设计者在实际应用中选择PTC来应对过流状况。另外,当试图保持低的保修和服务成本,维持不间断系统正常运行时间和用户易用性时,PTC是有用的。它们通常被选在难以进入或偏远地区的线路中使用,在这些地方更换保险丝时具有挑战性的。
在PTC器件和保险丝之间进行选择时还应考虑其他几个工作特性。为了获得最佳的安全性和可靠性,我们建议您在最终应用之前进行设备性能的测试和验证。
图2 保险丝和PTC的应用差异
综上所述,我们可以总结保险丝和PTC的应用差异如图2所示。Littelfuse公司也提供了多种多样的保险丝和PTC以供电路设计师进行选择,如图3和图4所示。
图3 Littelfuse保险丝选型表
图4 Littelfuse PTC选型表
以上便是在设计中如何选择保险丝和PTC的经验,如果您想了解更多,请继续关注世强元件电商!
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本文由咸柠翻译自Littelfuse,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”。
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【技术】为实现过流电路保护,选择保险丝还是PTC更好?
使用传统保险丝或是使用最新研发的自恢复PTC都可以实现过流电路保护。 两者都是通过对电路中过量电流产生的发热现象做出反应从而实现保护功能。 保险丝是靠熔断来断开电流的,而PTC则是依赖从低阻态变为高阻态来限制电流的大小。 充分理解两种装置的性能差异会使您在选择最佳电路保护方案时做出更轻松的选择。
Littelfuse(力特) 正温度系数(PTC)热敏电阻选型指南
目录- 特性和术语 应用和电路保护典型设计 选择工作表 表面贴装型 径向引线型 轴向引线型
型号- 30R135UU,72R300XF,1210L075/24PR,30R090UU,600R160-R1UR,1206L025YR,1812L,1812L350SL,1812L010/60DR,0603L050SLYR,2016L075/60,600R160-RAF,72R160XMR,0603L010YR,60R185XMR,1210L150TH,0805L110SLYR,16R1100G,1210L450SLWR,0402L050SLKR,0603L150SL,30R160UPR,1812L020PR,1206L110/12SL,2920L300DR,1206L175SLYR,72R090X,16R400GPR,16VT210SU,0805L260SLTH,1210L175WR,1812L200/12,LORHO,250S130¨CRCDR,30R300U,1812L200/16,16R1000GF,0805L100,16R250GU,20LR450,250R145-RA,2016L075/60MR,30R090,250R145-RAU,0402L020SL,2920L500/16,1206L260SLTHYR,1812L110/33MR,250S130¨CRC,250S130¨CRB,250S130¨CRA,16R135B,60R110XU,250S130V,2920L330/24MR,0603L075SL,0805L110,1206L175PR,250R145-RB,0603L,1206L012WR,16R500GU,24LT100,1812L150/12DR,1812L200/16DR,16R185BU,1210L380SL,600R160-RAUR,250S130¨CRBDR,30R800UH,15ST175U,250R145ZR,600R160F,16R1000G,16R110BPR,1206L380SLTHYR,16R250GPR,250R120-R3U,600R150-RA,600R150-RB,60R250,60R010,1812L075/33,250R120-R3,250R120-R2,250R120-R1,1210L200,1812L260/16MR,30R250UPR,72R135XMR,16R600GDR,1210L400SL,1206L300SLTHYR,30R700UMR,1206L450SL,250R120-RF,1206L200SLYR,250R120-RC,250R120-RA,0603L035YR,250R120-R2U,0603L175SL,1210L300SLYR,16R800GMR,60R375XH,16R110B,1812L190SLPR,16R1100GF,250R120TU,0805L075SLYR,16R1200G,250R120-RFZR,0402L,2920L200DR,2920L300,600R150F,2920L700SL,250R120-R1U,30R700UF,1210L075YR,2920L700SLPR,1210L110/16WR,60R110,1210L175SLYR,0805L010/24,16R600GU,2920L075/60MR,30R400U,60R050X,72R,60R,0402L010SLKR,72R090XPR,1206L050/15,1206L150SLYR,72R185XMR,2920L260PR,72R250XMR,1206L450SLWR,60R010XU,16VT210S,30R185,1812L075/24,1206L110SL,16R700GKLMR,1206L110TH,60R075X,LT SERIES,0603L100SLYR,1812L370SLPR,16R160BU,0805L110SL,60R025XPR,60R160X,0805L200SLTHYR,30R090UPR,2920L260/24,15LR380U,2920L,2920L185DR,16R500GPR,250R120T,60R090XPR,250R120U,30R300UU,1812L270SLPR,60R300X,1812L300SLPR,30R600U,72R075XU,0603L075SLYR,15LR260U,2016L,0402L020SLKR,06R075BU,06SL370GM,1206L075/16WR,1812L260SL,60R020XPR,20LR730,250R180MR,2920L330/24,06R155BPR,06SL190G,72R040XU,16R400G,1210L110THYR,2920L030DR,1812L160PR,2920L260/24DR,1812L075/33DR,1812L260TH,1210L035YR,1812L270SL,16R135BPR,1206L020YR,1206L075/13.2,30R250,0805L200SLTH,1812L050PR,600R150-RBF,0402L035SLKR,30R600UF,1210L350SL,16R300G,1206L075/13.6,72R075XPR,15LR260,15LR380,16R300GPR,30R185UPR,16R700GF,1812L014DR,60R160XMR,250R145U,0805L,1206L075SL,30R090U,2920L150DR,0805L050WR,1206L150TH,1812L200/12DR,0402L035SL,600R150-RAF,250R145T,1206L150SL,72R300XMR,1206L400SLWR,72R160XF,1812L150/24MR,30R500U,72R030XPR,2920L075DR,1206L075TH,1210L010WR,1812L350SLPR,LR,LT,1812L160/12DR,1812L150/24,60R025XU,2920L400/15MR,16R700GMR,0805L150SLYR,72R050XU,30R,16R1100GMR,60R010XPR,60R090,2920L200/24,1206L035YR,250R145-RBU,1206L050/15YR,16R800GF,1812L150/12,2920L400/15,VT SERIES,30R700U,1210L175SL,250R145TZR,0603L020YR,250S130¨CRADR,30R400UF,0805L300SL,1812L020/60,2016L050,1210L260SL,2016L050MR,16R250BU,1210L110/12WR,1812L010/60,06R120BPR,1812L075PR,30R400UMR,72R065XPR,60R135XF,SL SERIES,0805L010/24YR,16R250BPR,1812L370SL,30R160UU,20LR450U,0603L050SL,60R090X,1206L035/16,1210L020WR,1210L110/16,600R160-R1F,0402L010SL,250S130DR,60R185,24LT100U,72R020XPR,1206L150THWR,1210L380SLYR,1206L175SL,16R700GKL,72R300X,2920L050DR,2016L030,60R090XU,1210L110/12,2016L150,250R120ZR,16R185BPR,60R017XPR,1812L75/33,60R110XMR,1206L035/16YR,60R075XPR,60R025X,15ST175,250R180TMR,1812L150ZR,2920L050,1210L005WR,72R375X,1812L260THDR,1812L200THPR,72R050XPR,1812L125/16,12VL175XLU,0805L010YR,30R500UF,1812L75/24,16R700G,16R700GKLF,60R135X,2920L185,60R110X,1210L075,1812L160/12,16R900GF,1812L110,600R150-RBZR,600R,1812L125/6,60R040XPR,250R120-R1ZR,250R120-RFU,16R600G,2920L030,2920L150,30R800U,2016L100,1812L035/30DR,1812L075/24DR,16R135BU,250R120,30R185UU,SL,1812L010DR,2920L125PR,1206L200,1206L050YR,30R185U,ST,0603L150SLYR,1206L380SLTH,60R160XF,72R020X,30R600UMR,1812L300SL,60R050XU,0805L075SL,0805L260SLTHYR,72R250X,06SL370G,30R300,2016L075/060,1210L175,72R020XU,1812L260SLPR,250R180TF,16R1400GH,16R090BU,250R120-RAZR,0805L150SL,1812L050/30PR,30R160U,1210L260SLYR,60R065XPR,0805L020YR,1210L,1206L350SLTHYR,60R017X,1206L075SLYR,1206L110THYR,72R040XPR,2920L250DR,30R500,1210L110TH,1812L110/24DR,250R120-RCU,2016L200,0603L050YR,0805L300SLWR,1812L200,06R155BU,72R250XF,250R145,60R017XU,1812L020/60DR,1812L035/30,0603L050,1812L125/6PR,30R400,1206L400SL,60R030XPR,1210L350SLWR,60R300XF,VL,1206L260SLTH,06R120BU,72R065XU,1812L300MR,1210L400SLWR,VT,1210L450SL,16R,2920L500/16MR,1206L300SLTH,2920L075,250R120-RAU,72R030XU,250S130-RC,250S130-RB,16R110BU,250S130-RA,1812L300,2920L100PR,250S130,30R110UPR,30R250U,1206L110/12SLYR,0805L175SLYR,72R135X,0805L075WR,1206L016,16R500G,1206L150/12SL,0603L175SLYR,30R250UU,30R900U,16R900GMR,72R185XF,16R090B,1206L012,1206L075/13.2WR,600R150-RAZR,72R110X,1210L075/24,72R025X,0805L050,60R065XU,72R075X,1210L300SL,72R160X,0603L020,250R080ZR,72R090XU,1210L200SLYR,250R120TZR,60R185X,0603L025,0805L100WR,06R120B,2920L200/24DR,250R180,30R135U,60R040X,1206L025,06SL190GM,600R160-RA,72R135XF,06R075BPR,1206L020,1210L005,600R160UR,250R145-RBZR,12VL175XL,6
【选型】Littelfuse(力特)保险丝座选型指南
目录- Fuse Characteristics, Terms and Consideration Factors Fuse Selection Checklist PTC Characteristics and Terms PTC Product Applications Typical PTC Circuit Protection Designs Fuse Standards Fuse and PTC Products Selection Guide Fuse Packaging and Part Numbering
型号- 1812L,471,230,472,473,232,233,234,235,477,874,875,876,239,877,2016L,461E,485,LORHO,400,157T,369,804,807,808,600R,437 SERIES,USBR,370,251,372,373,494,253,374,2205,SL,0603L,0805L,ST,382,262,383,263,385,265,266,267,268,269,303,429,1210L,LR,LT,391,1206L,392,272,273,274,395,154,275,396,397,398,157,278,399,219XA,279,312,950,313,30R,159,314,435,315,437,438,318,LORHO PTC,160,285,440,250S,441,250R,322,443,202,203,324,VL,325,446,326,447,448,449,208,209,VT,16R,451,452,332,453,154T,454,213,456,215,72R,216,458,60R,217,459,218,977,460,461,220,462,464,465,224,466,225,467,468,501,469,229,505,506,2920L,508
463系列NaNO2®保险丝规格书
描述- 该资料详细介绍了463系列NANO²®快速熔断保险丝的产品特性、电气特性、应用领域和包装信息。该保险丝适用于高电流应用,具有优异的热循环耐久性、低温升和良好的温度稳定性,适用于数据通信和电信设备。
型号- 463,463 SERIES,0463030.ER
自恢复保险丝(PTC)的ITRIP电流的意义是什么?
Itrip可以叫做跳变电流,就是指电流超过该值时,电阻会出现大幅增加。其作为自恢复保险丝特有的重要参数,在设计选型时要格外重视。
Littelfuse(力特)高速半导体保险丝选型指南(英文)
目录- POWR-SPEED® High-Speed Semiconductor Fuses INTRODUCTION POWR-SPEED FUSES POWR-SPEED FUSES High-Speed Square-Body Fuses POWR-SPEED FUSES High-Speed Round-Body Fuses POWR-SPEED FUSE ACCESSORIES SPECIAL PURPOSE FUSES POWR-SPEED® Fuse CROSS REFERENCE GUIDE
型号- PSR033DL1000X,07945800229,KLC150,PSR072DL0400X,L50QS225,07945800228,07945800227,07945800226,07945800225,PSR070DL0250Z,L25S300.V,PSR032DL1500,PSR031DL0315Z,PSR031FL0450,PSR031DL0400Z,PSR030DS0450,L50S015.T,PSR071FS0200,PSR073FL0350Z,07945800224,PSR072DL0315X,07945800223,07945800222,07945800221,07945800220,PSR030DL0100,L70S030.T,PSR033DL0900X,L50QS050.T,L15S003.T,07945800239,07945800238,07945800237,07945800236,PSR033DL2250,PSR072DL,L25S006.T,L70S150.V,L75QS100.V,PSR031FS0450Z,PSR031UL0250,PSR033US0630,07945800235,0TLS080.TXLS,07945800234,PSR030DS0500Z,07945800233,PSR033FL0500,07945800232,PSR033DS1250,07945800231,PSR072UL0630X,07945800230,07945885600,07945800249,07945800248,PSR033DS0900X,07945800247,0KLC080.V,PSR072DL0550,PSR032DS1100X,PSR032UL0900,PSX1XLFL0550,L50S100.T,L50S150,07945800246,07945800245,07945800244,PSX3XLFL0900X,07945800243,07945800242,L75QS250,07945800241,07945800240,L50QS300.V,PSR032DS0550,PSR031FS0350,L50QS250,PSR031UL0630Z,PSR071FL0350,L25S100,PSR032DS1400,L75QS090.V,07945800253,07945800252,PSX3XLDB0630,PSX3XLDB1400X,07945800251,07945800250,0KLC005.T,PSR073FS0350Z,PSR030UL0160Z,PSR031US0630Z,L15S012.T,PSR031DL0800,PSR033FL0550,PSR030FS0200Z,PSR070UL0350Z,PSR071UL0160Z,PSR031FL0450Z,PSR073UL0350X,PSR030DS0630Z,PSR031US0550,07945884300,L70S600.X,PSR033FL1400,PSR072UL0500X,PSR071FS0200Z,PSX1XLFL0125,PSR071DL0500Z,L70QS035.V,PSR031FL0400,PSR073UL0630,PSR033US2250X,PSR033FL1800Z,PSR030DS0400,PSR073FS0315,L50QS275,PSR030FS0550Z,L50S100,PSR033FL2250Z,PSR031UL0500Z,PSR070FS0080Z,L60S005.T,PSR072FL0450Z,L15S300,PSR033US1800X,PSX1XLUB0280X,L70QS700,KLC175,PSX3XLDB0550X,0KLC125.X,PSR033FS0800,PSR030DL0125,PSR073DL1100X,PSX1XLFL0350X,PSR073DL1250,TLS006,PSR032FS1000,PSR070DL0400,L50S090.T,PSR032DS0500,PSR072FS0450Z,07945800219,07945800218,L15S025.T,PSR031US0500Z,PSR072DL0500,PSX1XLDB0350,PSX1XLFL0100,PSR033FS2250Z,L70S,PSR033US1500,PSR073FL0800,PSR033FS1800Z,PSX3XLUB0900,PSR071UL0550,L50S125,PSR070FL0080Z,PSR032DL1100X,PSR031US0500,PSR033UL2250X,L70S350.V,PSR033UL0700,PSR030DL0500,PSR072FL0500Z,L25S100.V,L25S175,PSX1XLUB0200,PSR030FL0200Z,PSX1XLDB0315X,PSR070 350 A,PSX1XLDB0400X,PSR032FL0700,L25S090.V,PSR033DL0900,PSR070FL0350Z,07945884350,PSR070DL0080,PSR033FL0900,L25S002.T,PSR031UL0450Z,L75QS300.X,PSR030FS0063,PSR073DL0350,PSR031DS0700,0KLC040.T,L75QS200,07945885200,PSR072FS0630Z,PSR070DL0050,PSR031US0450Z,PSR032FS0700Z,PSR030UL0400,L25S015.T,PSR072DL1000,L50S550,PSR033US1100X,PSR073FL0450,L50QS500.X,L50S050.T,PSR070FS0400,PSR071FL0160Z,PSR070DL0063,PSR030FL0630,PSR030FS0080,PSR072FS0900,PSR070DL0160Z,L50S300.V,PSX1XLDB0315,PSX3XLFL0450,L70QS350,PSR032UL0500,PSR072UL0280X,PSR071DL0280,PSR071FS0630,PSR033FS1400Z,07945885225,PSR031UL0630,PSR030FL0550Z,PSR031DS0350Z,PSR071UL0160,PSX1XLUB0630,PSR031DL0400,PSR073FS0700,PSR033DS0630X,PSX3XLFL1000X,PSR033FL1800,PSR033UL1100X,PSR031UL0200,PSR032DS,PSR032DL,PSR071DL0250,PSR031FL0800,PSR033DS0800,PSR032US0800,PSR033UL1600,L25S125,PSR033DL0500X,PSX3XLDB0900X,PSR072FL0630,PSR031DL0350Z,PSX3XLDB,PSR030DL0550,L50S500,PSR030DS0100Z,PSX3XLDB1100,PSR033DL1800,PSR073DL0315,L70S800.X,0TLS006.T,L50QS200,07945885250,PSR071FL0315,L50QS250.V,PSR032DL0630,PSR071DL0280Z,PSR032UL1400,PSR032DS0900,L25S150,0TLS030.SLSA,L70S600,L70QS300,PSR072UL0900X,PSR030DS0450Z,PSR032UL0550,PSX1XLFL0500,PSR073UL1100,PSR031FS0800Z,PSR030UL0450,PSR070UL0280,TLS100MB,L15S350.T,PSX3XLDB1000X,PSR072FL0630Z,PSR033DS0500X,L75QS225,L70QS070.V,PSR073FL0400,PSR032FL0700Z,L15S800.V,L60S040.T,PSR071DL0200,07945885150,L25S010.T,07945886001,PSR032FS1500,07945886002,07945886000,PSR033DL0630X,PSR031US0800Z,PSR030FL0125,PSR072UL1000X,PSR030DL0100Z,L60S300,PSR070FS0350,L60S700.X,PSR031DS0315,07945886005,07945886006,07945886003,07945886004,PSR072UL0450,07945886009,07945886007,PSX1XLUB0160,PSR032UL0450,07945886008,PSR070FS0125Z,ESR1XLDB,07945886012,07945886013,07945886010,PSR031DL0450,07945886011,TLS 100A-MB,PSR032FS0400Z,07945825195,L60S045.T,07945825194,L50QS700.X,0KLC250.X,07945825197,PSR033FS2250,07945825196,PSR032UL0700X,PSR030DL0550Z,07945825191,07945825190,07945825193,L75QS600,07945825192,07945886016,PSR070UL0315Z,PSR070UL0400Z,07945886017,07945886014,PSR033US1400X,07945886015,07945825199,07945825198,KLC600,07945886018,07945886019,L70S250,PSR030FL0100,07945886020,PSR032FS0630,07945886023,07945886024,07945886021,07945886022,07945885175,TLS030LSA,PSR070FL0125Z,PSR030FS0250Z,PSR070UL0250,PSX3XLFL1250,PSR030FL0250Z,07945886027,PSX1XLUB0100X,PSR073FS1250,07945886028,07945886025,L70S200.V,PSR073DL0400,07945886026,07945886029,07945886030,07945886031,07945886034,07945886035,07945886032,L25S045.T,PSR033DS0700,07945886033,L50S020.T,PSR072FL0800Z,PSX3XLFL0630X,PSR072FS0500,PSX1XLUB0450X,07945886036,PSR073DL0700X,PSR071UL,PSR073UL0800X,L50S600,PSR033UL1400X,PSR073UL1250X,PSR070FS0315,L50QS700,PSR031FS0500Z,PSR030UL0063,07945825162,07945825161,PSR070FL0050,07945825164,PSR032US0700X,07945825163,07945825160,0KLC700.X,L70S225,PSR031FS0800,PSR033US0550X,07945825169,PSR072DL0800X,07945825166,07945825165,07945825168,0794582
408系列0603延时>陶瓷保险丝规格书
描述- 该资料为Littelfuse公司生产的408系列0603尺寸时间延迟陶瓷保险丝的数据表。该产品专为在高达150°C的高工作环境温度和高浪涌电流下运行的电路提供过流保护而设计。它具有无铅、符合RoHS标准和卤素免费的特点,适用于有铅和无铅回流焊/波峰焊工艺。
型号- 0408001.WR,408 SERIES,408
【应用】自恢复型保险丝PTC 16R600G应用于车载加热杯电源部分,跳闸快速,安全无铅
本文主要是给车载加热杯电源部分选择合适的保险丝。鉴于加热杯属于消费电子类产品,选择熔断型保险丝会增加售后成本,所以推荐选择PTC自恢复型保险丝。从加热杯的主要功能可以得知,工作温度为60℃左右。littelfuse 16R600G较为合适。16R600G的工作电压为16V,也满足电源电路工作电压为12V的条件。且在正常工作状态下,电阻仅为0.028欧姆,对电路影响小。
BLS系列小型10x38mm保险丝
描述- 该资料介绍了Littelfuse公司的BLS系列小型快速熔断器。这些熔断器具有10x35毫米的特殊尺寸,适用于空间受限的应用。它们提供低成本保护,用于街道照明、计量、控制和电子电路。BLS系列熔断器在检测到过载时迅速切断电路,为需要快速过载保护的设备提供了卓越的安全保障。
型号- JLS250,0BLS003.M,0BLS002.M,0BLS002.T,0BLS001.T,BLS,0BLS01.5T,0BLS002.H,0BLS001.H,0BLS.4001,0BLS003.H,BLS010,0BLS.7501,0BLS01.81,JLS225,0BLS008.1,BLS.750,BLS SERIES,BLS.800,BLS01.6,0JLS225.X,BLS.500,BLS01.5,0BLS010.T,BLS01.8,0BLS.200T,0BLS01.6T,0BLS.5001,0BLS.8001,0JLS250.X,BLS006,0BLS004.T,BLS005,0BLS003.T,BLS008,0BLS006.T,BLS007,0BLS005.T,BLS002,BLS.400,BLS001,0BLS007.T,BLS004,BLS.200,BLS003
自恢复保险丝(PTC)的ITRIP电流的意义是什么?
Itrip可以叫做跳变电流,就是指电流超过该值时,电阻会出现大幅增加。其作为自恢复保险丝特有的重要参数,在设计选型时要格外重视。
【产品】miniSMDC系列PolySwitch 自恢复保险丝,可提供表面贴装过流保护
Littelfuse(力特)推出的miniSMDC系列PolySwitch 自恢复保险丝可提供表面贴装过流保护,适用于空间大且需要自恢复保护的应用场合。该系列是工业内范围使用最广泛的自恢复器件,低电阻,具有较小的1812规格封装,较短的断开时间,符合RoHS标准,无铅和无卤素。
L17T系列Telcom电源保险丝POWR-GARD®保险丝
描述- 该资料介绍了L17T系列电信电源保险丝,专为电信系统的短路保护设计。这些保险丝具有极强限流能力,提供可靠的敏感直流配电系统保护。采用银镀元件以降低I2t和峰值泄漏电流,这些先进的保险丝可消除由于浪涌和尖峰引起的设备损坏。独特的元件几何形状提供了更低的运行温度,有助于减少机箱内的热量。
型号- L17T090,L17T250.T,L17T,L17T070,L17T500.V,L17T175,L17T450,L17T350,L17T350.V,L17T900.V,L17T250,L17T150,L17T400.V,L17T150.T,L17T1100V,L17T175.T,L17T800.V,L17T300.V,L17T225.T,L17T100,L17T SERIES,L17T600,L17T1200V,L17T900,L17T800,L17T300,L17T100.T,L17T1000V,L17T200,L17T225,L17T500,L17T125,L17T400,L17T1200,L17T450.V,L17T1100,L17T200.T,L17T1000,L17T125.T,L17T070.T,L17T600.V,L17T090.T
【产品】Littelfuse保险丝、TVS、自恢复PTC,应对不同防护需求
Littelfuse有十分丰富的保护器件对应不同等级的应用市场和应用要求,其产品具有安全性高、系列最全、支持好的优点。产品包括瞬态抑制二极管,GDT,PPTC,表面贴装保险丝,自恢复保险丝,延时型保险丝,高速保险丝等。
想选择一款贴片式(SMD)自恢复保险丝(PTC),要求保持电流0.2A,跳闸电流0.4A,最大容忍电压30Vdc,最大容忍电流10A,请问是否有合适型号推荐?
推荐1210L020WR自恢复保险丝,尺寸为0.12 inch x 0.10 inch(3mm x 0.1 mm),保持电流0.2A,跳闸电流0.4A,最大容忍电压30Vdc,最大容忍电流10A,可满足设计需求。
KLK系列小型10x38mm保险丝
描述- 该资料介绍了KLK系列的10x38毫米快速熔断器。这些熔断器专为控制电路、街灯、HID照明、计算机和其他无大电流浪涌的应用提供保护。它们具有高中断能力和限流能力,旨在作为主分支电路熔断器或断路器的补充,以提供后备过载保护。
型号- 0KLK012.T,0KLK010.T,KLK02.5,KLK.125,KLK,KLK030,KLK.200,KLK SERIES,0KLK.300T,0KLK009.T,0KLK005.T,0KLK007.T,KLK007,KLK006,0KLK002.T,KLK009,0KLK025.T,KLK008,KLK003,KLK002,KLK005,KLK004,KLK001,0KLK03.5T,KLK.250,0KLK.200T,KLK015,0KLK030.T,KLK010,KLK01.5,KLK012,KLK.500,0KLK02.5T,KLK03.5,0KLK.500T,0KLK.750T,KLK.300,0KLK.100T,KLK.100,0KLK008.T,0KLK004.T,0KLK006.T,0KLK001.T,0KLK003.T,KLK025,0KLK020.T,KLK020,0KLK01.5T,KLK.750,0KLK.125T,0KLK.250T,0KLK015.T
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可定制温度范围-230℃~1150℃、精度可达±0.1°C;支持NTC传感器、PTC传感器、数字式温度传感器、热电堆温度传感器的额定量程和输出/外形尺寸/工作温度范围等参数定制。
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可定制车规级电感的电流范围0.3~17.9A,尺寸最小1x0.55x0.5mm到最大12.5x12.5x6mm,工作频率100KHz~2MHz,感值范围:0.47uH~4.7mH。符合IATF16949和AECQ-200。SPQ为5K。
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