Overcurrent Protection Fundamentals - An excerpt from the POWR-SPEED® Fuses Application Guide
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过流保护基础-摘自《POWR-SPEED®保险丝应用指南》 |
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[ 过电流保护 ] |
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技术论文,技术文档,technical paper |
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详见资料 |
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中文 英文 中英文 日文 |
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2021 |
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3.2 MB |
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| 世强先进（深圳）科技股份有限公司 | |
| 世强硬创平台www.sekorm.com | |
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| 世强硬创平台www.sekorm.com | |
| 世强硬创平台www.sekorm.com |
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过流保护基本原理：摘自POWR-SPEED®保险丝应用指南
本文节选自POWR-SPEED熔断器应用指南，主要介绍了过电流保护的基本原理。内容包括过电流条件、过电流类型、功率半导体器件的保护、高速熔断器的构造和性能特点等。文章详细阐述了过电流对电气系统的影响，以及如何通过选择合适的熔断器来保护半导体器件。此外，还介绍了高速熔断器的不同类型、构造、操作原理以及性能曲线等。
LITTELFUSE - POWR-SPEED®保险丝,POWR-SPEED® FUSES,L25S SERIES,PSR SERIES,L25S,PSR
Littelfuse（力特）电路保护产品选型指南
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
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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,5G室外,电池单元保护,ELECTRONICS,EXTERNAL STORAGE,电机控制,TABLETS,机器人器具,器具,智能手表,DESKTOP COMPUTERS,计算,DATA CENTER,HDTV HARDWARE,LAPTOP,SERVERS,DESKTOP COMPUTER,TYPE-C适配器,4G室内,ANALOG SIGNAL LINES,LAPTOP COMPUTERS,不间断电源,SCANNER,NOTEBOOKS,TELECOMMUNICATIONS CIRCUITS,4G OUTDOOR,模拟信号线,数码摄像机,LOW SIGNAL DISTORTION,企业级服务器,打印机,数据通信,可编程逻辑控制,POWER TOOLS,USB2.0,BUILDING AUTOMATION,DIGITAL CAMERA,A/V设备,数字信号线,HUBS,数据中心,TVS,DIGITAL CAMERA,LIGHTING BALLAST,TELECOM APPLICATIONS,服务器,NETWORK HARDWARE,VIDEO EDITING SYSTEMS,可穿戴设备,INDUSTRIAL CONTROL,房舍管理系统,机顶盒,建筑控制,汽车信息娱乐,ENERGY MANAGEMENT,CONSUMER ELECTRONICS,手机,台式计算机,POWER TOOLS,5G室内移动网络,COMPUTER PERIPHERAL DEVICES,DATACOM,ROADWAY LIGHTS,INDUSTRIAL AC/DC POWERING TERMINALS,笔记本,4G INDOOR,5G INDOOR MOBILE NETWORK,HIGH-SPEED DATA LINK,TWO-WAY RADIOS,SEMICONDUCTOR PROTECTION,TELECOM APPLICATIONS,TELECOM I/O INTERFACES,BUILDING TECHNOLOGIES,产业,I/O INTERFACES SIGNAL LINES,AUDIO,智能电表,MILITARY,自动驾驶,PARALLEL PORT PRINTER SCANNERS,发动机,视频编辑系统,ULTRA-FAST REACTION,HARD DISK DRIVE,工控,PERIPHERALS,AUTOMOTIVE INFOTAINMENT,WIRELESS CHARGING,PORT PROTECTION ON PERSONAL COMPUTERS,户外LED广告显示标牌,ULTRABOOKS,电脑,APPLIANCES,WEARABLES,开关,数码相机,ENERGY STORAGE SYSTEMS,游戏PC,TV,GAMING PCS,汽车,门禁,DATA COMMUNICATIONS CIRCUITS,掌上电脑,高速数据链路,INDUSTRY,MOUSE,ROBOTIC APPLIANCES,HARD DISK DRIVES,车载充电器,SMART APPLIANCES,监护仪,DESKTOP COMPUTERS,LAPTOP COMPUTER,显示器,电池系统,HDMI端口,VIDEO EDITING SYSTEM,电子移动,INDUSTRIAL CONTROLS,LED LIGHTING APPLICATIONS,BATTERY CELL PROTECTION,COMPUTER PERIPHERALS,数字视频接口,F高功率LED,IGNITION SYSTEMS,RENEWABLE ENERGY,SMART PHONES,台式机,天线,ANTENNAS,COMPUTER INPUTS AND PERIPHERAL DEVICE,SMART METERS,移动网络,RAILWAY,SCANNERS,暖通空调,智能电话,INDUSTRIAL,TRANSPORTATION,消费电子,NETWORKING APPLICATIONS,DISPLAYS,HDD,PDA,高容量锂离子聚合物,TELECOMMUNICATIONS,硬盘驱动器,吸尘器,双向无线电,E-MOTORCYCLE,DESKTOP,LI-ION PRISMATIC CELLS,SECURITY & ACCESS CONTROL,SMALL 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CLEANERS,点火系统,CHARGERS,微型逆变器,平板,电池供电的便携式设备,BMS,LPT PRINTER SCANNERS,PERSONAL COMPUTERS,消费便携式电子产品,INDUSTRIAL EQUIPMENT,MOBILE,HIGH ENERGY SUPPRESSION APPLICATIONS,CONSUMER ELECTRONICS,TELECOM,固态硬盘,键盘,DATACOM APPLICATIONS,笔记本电脑,MICRO INVERTERS,发电机,医学,中央逆变器,建筑技术,机器人,AND GAME CONTROLLER PORTS,MOTOR CONTROLS,AC CHARGING,LPT打印机扫描仪,电动摩托车,EV 3 WHEELERS,BATTERY PACKS,ROBOTICS,BUILDING CONTROL,HVAC,BATTERY-POWERED PORTABLE DEVICE,USB插座,USB RECEPTACLES,无线充电,电动两轮车,电池组,AC APPLICATIONS,ENGINE,PROGRAMMABLE LOGIC CONTROL,ENVIRONMENTAL,GFCI,网络,CELL PHONES,路由器,游戏控制器端口,AUDIO INTERFACES,热泵,热插拔保护,PRINTERS & SCANNERS,连接性,EV-INFRASTRUCTURE,DIGITAL VIDEO RECORDERS,直流充电,F HIGH-POWER LEDS,海军陆战队,锂离子电池组,LI-ION BATTERY PACKS,电动三轮汽车,HDMI,CONNECTIVITY,HDMI PORTS,火线,EV基础设施,TELECOM EQUIPMENT,GAMING CONTROLLERS,I/O INTERFACES,AUTOMOTIVE,方形锂离子电池,储能系统,E-MOBILITY,PC DESKTOP,PLC,SWITCHES,智能家电,无线通讯,DIGITAL CAMERAS,ECALL,ENTERPRISE SERVER,SET-TOP BOXES,HOME APPLIANCE,FIREWIRE,NOTEBOOK PCS,高清多媒体接口（HIGH DEFINITION MULTIMEDIA INTERFACE）,可编程逻辑控制器,SMART WATCHES,电信设备,MONITOR,电脑外设,计算机输入L设备,LIGHTING,ELECOM DATACOM,交通运输,智能手机,个人计算机上的端口保护,数据线通信,CONSUMER PORTABLE ELECTRONICS,扫描仪,TYPE-C ADAPTER,道路灯,游戏控制器,KEYBOARD,高清晰度电视硬件,4G室外,AUTONOMOUS DRIVING,NOTEBOOK,ROUTERS,SSD,GFCI/AFCI & USB RECEPTACLES,SMALLER ELECTRONICS,ELEVATOR DRIVES,数据通信电路,CONTROL,PRINTERS,环境的,BATTERY POWERED,OUTDOOR LED ADVERTISING DISPLAY SIGNS,CENTRAL INVERTERS,CONNECTIVITY DRIVING,HARD DRIVES,INDUSTRIAL,PMP,可再生能源,并行端口打印机扫描仪,电源,DVI,AUTOMOTIVE ELECTRONICS,5G OUTDOOR,DATACENTER,ENGINE SYSTEMS
The CC2XX series ceramic chip fuse of DA Technology has been successfully applied to the overcurrent protection of POS
When the control chip fails.,under abnormal conditions, the fuse is blown in time to disconnect the circuit. If the fuse is not used to cut off the circuit in time, the heat generated by the circuit will most likely cause damage to the product or even fire.In this regard, the small chip ceramic fuse launched by DA Technology has various packages such as 0402 0603 1206. It is stringed between the lithium battery and charge＆discharge circuit, which can effectively protect the above-mentioned over-current and short-circuit conditions.
New AEC-Q200-Qualified 823A Fuse for High-Voltage Automotive Use
Littelfuse, Inc. announced the release of its new 823A Series Fuse, an AEC-Q200-qualified, high-voltage-rated surface-mount (SMD) fuse with high interrupting ratings. Designed to meet the stringent requirements of modern automotive applications, the 823A Series offers a compact 5 x 20 mm footprint while delivering exceptional overcurrent protection for 1000 Vdc systems.
Littelfuse（力特） 应用于汽车市场的电路保护器件选型指南
Electrical Threats and New Automotive Technologies Introduction Automotive Applications in Modern Vehicles Circuit Protection device for Automotive Application Selection table Circuit Protection device for Automotive Application Selection Guide
LITTELFUSE - METAL OXIDE VARISTOR (MOV),FUSES,二极管阵列,LOW-VOLTAGE FUSE,主正极接触器,晶闸管,AUXILIARY CONTACTOR,SM24CANA DIODE ARRAYS,MAIN NEGATIVE CONTACTOR,可复位PPTC过流保护装置,VARISTORS,GDT,SMD PPTC,SMD FUSE,POWER SEMICONDUCTORS,CARTRIDGE FUSE,PRE-CHARGE CONTACTOR,HIGH VOLTAGE FUSE,INLINE FUSE,主负极接触器,IGNITION IGBT,THYRISTOR,MAIN POSITIVE CONTACTOR,变阻器,THERMAL PROTECTOR,肖特基二极管,TVS DIODE ARRAYS,AUXILIARY FUSE,ESD PROTECTION SILICON,SMD保险丝,SURFACE MOUNT FUSES,LED PROTECTOR,DIODE ARRAYS,HIGH-VOLTAGE FUSE,LED保护器,闸门驱动器,TVS DIODES,功率半导体,SURFACE MOUNT PPTCS,AUML & AUTO MLA VARISTORS,保险丝,IGBT,MULTILAYER VARISTOR (MLV),TVS DIODE,热保护器,ULTRA-LOW CAPACITANCE DIODE ARRAYS,SCHOTTKY DIODE,VARISTORS,SIDACTOR,SCHOTTKY DIODES,高压熔断器,多层压敏电阻器,RESETTABLE PPTC OVERCURRENT PROTECTION DEVICES,ESD PROTECTION POLYMER,PPTCS,辅助保险丝,RESETTABLE PPTC OVERCURRENT PROTECTION DEVICES,辅助接触器,低压熔断器,高分子ESD,IGNITION IGBTS,METAL DIODE VARISTOR,POLYMER ESD,TVS二极管,TVS二极管阵列,MULTILAYER VARISTORS,预充电接触器,DIODE ARRAY,GATE DRIVER,金属氧化物压敏电阻（MOV ),VXXE14AUTO,S8025XXXP,10EV,DST10XXXS-A,VXXE30AUTO,TPSMF4L,AXGD10603,501A,AQ3130,SM24CANB-02HTG,AQ05C,30KPA,LR4-XXXF,SRPXXXF,V30MLAXXXXNHAUTO,527 SERIES,AQ24CANFD,MICROASMD0XXF,AQ3400-02UTG,V18AUMLAXXXX,PICOASMDC0XXS,881A,AHRFXXX,AQ1003-01ETG,NANOASMDC0XXF,AQ24CANA-02HTG,885 SERIES,AQ2555NUTG,SZ1SM,LSP380,DST15XXS-A,V20HXXXAUTO,0438XXX.WRA,AQ3118,AQ24CANA,526 SERIES,VXXE25AUTO,FEMTOASMDC0XXF,MIDI70V,AHEFXXX,V20PXXXAUTO,DST5XXXS-A,P6SMB510CA,AQ15C-01FTG,20EV,AQ24CAN,SESD1004Q4UG-0020-090,AGRFXXX,AQ24CANFD-02HTG,TPSMA6L,0441XXX.WRA,0881XXXUR,440A,ASMDCXXXF,S8016NAXP,SZNS6A,SZ1SMB,SZ1SMC,AQ4022,AXGD10402,0440XXX.WRA,HS4040XAQX,TP5KP,V48MLAXXXXNHAUTO,AQ1005-01ETG,V24AUMLAXXXX,IXD_6XXSI,MINIASMDCXXXF,NG SERIES,V16AUMLA2220NS,P6KE510CA,441A,ASMDXXXF,SZ1.5SMC,VXXE17AUTO,V48AUMLAXXXX,437A,0437AXXX.WRA,V18MLAXXXXNHAUTO,AQ3045,SP3213,TP1.5KE,SZP6SMB,AQ3045-01ETG,SESD0402X1BN-0010-098,SP3012-04UTG,38EV,HCRTP-MINI,V16AUMLA2220H,TP6KE,438A,SLD8S,V120MLAXXXXNHAUTO,30EV,521 SERIES,V14HXXXAUTO,IX4340NE,V14PXXXAUTO,SZSMF,0HEV,SHEV,AHSXXX-2,AQ1005,0885XXXDR,SJ6025XXXP,TPSMC,V3.5MLAXXXXNHAUTO,TPSMB,TPSMD,0501XXX.WRA,AQ24C-01FTG,MEGA70V,VXXE45AUTO,SM24CANA-02HTG,DST8XXXS-A,ANTENNA,REVERSE BLOCKING RECTIFICATION,COMMUNICATION SYSTEMS,POWERTRAIN,SENSOR FUSION,电机控制,TRACTION MOTOR INVERTER,MOTOR CONTROL,HIPSET,LIN BUS ESD PROTECTION,AUDIO AMPLIFIER,ACTIVE CLAMPING,BASEBAND PROCESSOR,摄像头,ENGINE COOLING SYSTEM,SWITCHING ELEMENT PROTECTION,TRANSIENT VOLTAGE SUPPRESSION,AUX PORT,POWER STEERING PUMP,发动机冷却系统,IGNITION SYSTEM,VEHICLE COMMUNICATION,ENERGY STORAGE SYSTEM,FLEXRAY BUS,ADVANCED DRIVER ASSISTANCE SYSTEMS,SWITCHING MOSFETS,AUTOMOTIVE ELECTRONICS,HIGH-SPEED IO PORTS,HEADLAMPS,POLYMER ESD DIODE,ON-BOARD BATTERY CHARGER,现代汽车中的汽车应用,REMOTE KEYLESS ENTRY,SECONDARY ESD PROTECTION,COMMUNICATION & INFOTAINMENT SYSTEMS,AUTOMOTIVE APPLICATIONS IN MODERN VEHICLES,MODERN VEHICLES ELECTRONIC APPLICATIONS,PWM (IO) PROTECTION,WIRING HARNESS PROTECTION,HIGH-SPEED ESD PROTECTION,ENGINE COOLING SYSTEM,CHASSIS,OPEN CIRCUIT PROTECTION,ANALOG FRONT-END,BLUETOOTH,NETWORKING,HIGH-SPEED SERIAL LINK,主动夹紧,IO PROTECTION,紧急呼叫（ECALL）,LIGHTING – HEADLAMPS,BATTERY MODULE,ACTIVE CLAMPING,EMERGENCY CALL (ECALL),FREEWHEELING DIODE,传感器融合,ELECTRICAL THREATS,CAMERA,WAVEFORM GENERATOR,BATTERY DISTRIBUTION UNIT,ENERGY STORAGE SYSTEM,INFOTAINMENT AND NAVIGATION,点火系统,AUTOMOTIVE ELECTRONICS,LIGHTING – INSIDE CABIN,EMERGENCY CALL,EV BATTERY MANAGEMENT SYSTEMS,RF ANTENNA,RADAR,RADAR SYSTEM,THERMAL PROTECTION,照明-前照灯,DC/DC CONVERTER,CAN BUS,电气威胁,ESD PROTECTION,WIFI,汽车电子,OVERCURRENT PROTECTION,牵引电机逆变器,SURGE PROTECTION,DOWNSTREAM BMS COMPONENTS,INFOTAINMENT SYSTEMS,电池模块,GPS,OVERLOAD CIRCUIT PROTECTION,VEHICLE COMMUNICATION,SENSOR FUSION,信息娱乐和导航,CAN BUS SENSITIVE ELECTRONIC ICS,BATTERY MODULE,OVERVOLTAGE PROTECTION,AUTOMOTIVE CIRCUIT PROTECTION APPLICATIONS,DC/DC CONVERTER,CAMERA,CABLE,REVERSE OUTPUT RECTIFICATION,NEW AUTOMOTIVE TECHNOLOGIES,POWER SUPPLY,V2X MODULES,REMOTE KEYLESS ENTRY,NEW ENERGY CAR,DATA LINES,ANALOG FRONT END,IGNITION SYSTEM,NEW ENERGY CAR,汽车新技术,ELECTRONIC ICS,NETWORK PROTECTION,INFOTAINMENT,STANDARD SURGE PROTECTION,车辆通信,A/C COMPRESSOR,SHORT CIRCUIT PROTECTION,BLOWER,ELECTRONIC COMPONENTS,NETWORK SYSTEMS & BODY,GLOBAL LAB CAPABILITIES,储能系统,照明-机舱内,IGBT ACTIVE CLAMPING PROTECTION,DC/DC变换器,ADVANCED DRIVER ASSISTANCE SYSTEM,LIGHTING,SILICON ESD DIODE,ON-BOARD BATTERY CHARGER,遥控无匙进入,REVERSE POLARITY PROTECTION,汽车电路保护应用,RADAR SYSTEM,SAFETY,LIDAR,POWERTRAIN SYSTEMS,雷达系统,MAIN CONTACTORS,TRACTION MOTOR INVERTER,LOAD DUMP PROTECTION,MOTOR CONTROL,BATTERY DISTRIBUTION UNIT,CELLS,CHASSIS & SAFETY SYSTEMS,TELEMATICS,车载电池充电器,NAVIGATION,电池分配装置,全球实验室能力,ELECTRIC HEATER
Littelfuse（力特）产品组合概述
Littelfuse公司提供广泛的电路保护、功率控制和传感技术产品，服务于全球超过100,000家客户。公司成立于1927年，总部位于美国芝加哥，拥有超过11,000名员工。Littelfuse的产品涵盖保护、控制和传感三大领域，应用于航空航天、家电、汽车、建筑自动化、数据中心、电动汽车基础设施、医疗、工业、LED照明、移动和可穿戴设备、可再生能源和交通运输等多个市场。公司通过技术创新和战略收购，不断扩展其产品线和市场覆盖范围。
LITTELFUSE - DIODE MODULES,SURGE PROTECTION MODULES,贴片保险丝,高速数字光隔离器,标准基地营地组件,通用二极管阵列,高速熔断器,晶闸管,保护晶闸管,光耦元件,接地故障继电器,危险区域型熔断器,离散MOSFET,快速恢复二极管,HIGH POWER,STANDARD BASE CAMP ASSEMBLIES,GDTS,汽车二极管阵列,压力包IGBT,SURFACE MOUNT FUSES,交流电源开关,变阻器,AC POWER SWITCHES,肖特基二极管,LF模块和盖子,整流器,HALL EFFECT SENSORS,气体放电管,PPTC DEVICES,IGBT MODULES,霍尔效应传感器,RTD,肖特基和快速恢复二极管,CURRENT MONITORS,NGR监测器,自定义传感器,肖特基,TVS DIODES,NGR包,MOSFET模块,POLYSWITCH®PPTC器件,BIPOLAR MODULES,电压监视器,保险丝,压敏电阻,RTP,CUSTOM SENSOR MAGNETIC,ESD PROTECTORS,TELECOM FUSES,POWER SEMICONDUCTOR,RTDS,LF DEADFRON支架,热断路器,VARISTORS,小型RTP,REED SWITCHES,电源模块,固态继电器,中压熔断器,SIC MOSFETS,LED DRIVERS,ESD保护器,RFID TAGS,DISCRETE FRD,工业电源,IGNITION IGBTS,太阳能保险丝,表面贴装MOV,栅极驱动器,HI REL保险丝,DEADFRON固定器,门驱动器,THYRISTORS,OPTOCOUPLERS,二极管阵列,THYRISTOR MODULES,离散SCR,SSRS,表面安装保险丝,UL级保险丝,DISCRETE THYRISTORS,POLYSWITCH,MLV,MLVS,自恢复保险丝,MOSFET MODULES,离散IGBT,定制传感器磁性,AUTOMOTIVE DIODE ARRAYS,VOLTAGE MONITORS,FLASHER,AUTOMOTIVE FUSES,POWER RELAYS,分立晶闸管,磁簧开关,DIODE ARRAYS,光耦合器,泵控制器,分立二极管,SIDACTOR® DEVICES,RTP MINI,MOSFETS,LED驱动器,晶闸管模块,整流二极管,GATE DRIVERS,TRIACS,SIC SCHOTTKY DIODES,PROGRAMMABLE CAPACITORS,CUSTOM SENSORS MAGNETIC,HI-REL FUSES,双极模块,UL FUSES,电流监视器,SSRS,高曝光率浪涌电流,NGR MONITORS,电源半导体,CUSTOM SENSORS,DEADFRON HOLDERS,双极型二极管,分立MOSFET,NTCS,MOSFETS器件,浪涌保护装置,THERMALLY PROTECTED MOVS,GENERAL PURPOSE DIODE ARRAYS,分立可控硅,二极管,定制磁性传感器,MOSFET,FUSES,数字温度指示器,点火IGBT,HIGH SPEED DIGITAL OPTICAL ISOLATORS,盒式保险丝,GAS DISCHARGE TUBES,配电模块,RFID标签,热保护MOV,GDT,NGR PACKAGES,通信保护,配电箱,危险区域型保险丝,塔式照明控制装置,温度传感器,SIDACTOR®保护晶闸管,标准组件,PUMP CONTROLLERS,SOLID-STATE RELAYS,最大似然比,PPTC器件,DIGITAL TEMPERATURE INDICATORS,SPECIALTY FUSES,INDUSTRIAL GFCI,低电容二极管阵列,多用途运载工具,径向引线MOV,HAZARDOUS AREA TYPE FUSES,电压监测器,CC类/小型熔断器,NTC,ULTRA LOW CAPACITANCE DIODE ARRAYS,SIC MOSFET,点火IGBTS,超低电容二极管阵列,高速熔断器电信熔断器,POWER MODULES,RECTIFIER DIODES,延时继电器,SOLID STATE RELAYS,SURFACE MOUNT MOVS,表面安装MOV,可编程电容器,GROUND FAULT RELAYS,SIDACTOR®器件,配件,簧片开关,PROTECTION THYRISTORS,HIGH-SPEED FUSES,MULTI-LAYER VARISTORS,TVS DIODE ARRAYS,泵/液位控制器,SCHOTTKY DIODES,PRESS-PACK IGBTS,NGR监视器,DIODES,汽车保险丝,UL保险丝,多层压敏电阻,TIME DELAY RELAYS,TVS二极管,TVS二极管阵列,CC级/小型保险丝,HI-REL保险丝,电涌保护模块,DISCRETE IGBTS,功率继电器,DISCRETE MOSFETS,照明浪涌保护二极管阵列,SURGE PROTECTION DEVICES,磁性传感器,离散FRD,LOW CAPACITANCE DIODE ARRAYS,双向可控硅,电信保险丝,LED PROTECTORS,闪光器,UL CLASS FUSES,CLASS CC/MIDGET FUSES,FAST RECOVERY DIODES,SIC MOSFET,LIGHTING SURGE PROT. DIODE ARRAYS,CUSTOM ASSEMBLIES,射频识别标签,PFC模块,STANDARD ASSEMBLIES,特种保险丝,LED保护器,碳化硅MOSFET,DISCRETE DIODES,ACCESSORIES,IGBT,铂电阻,SOLAR FUSES,THERMAL BREAKERS,自定义程序集,IGBT模块,CARTRIDGE FUSES,多层压敏电阻器,SIC肖特基二极管,工业GFCI,二极管模块,DISCRETE SCRS,RADIAL LEADED MOVS,高功率,POWER DISTRIBUTION BLOCKS,HIGH POWER,电流监测器,MEDIUM VOLTAGE FUSES,数据中心设备,DATA CENTER & CLOUD,器具,UPS EQUIPMENT,DATA CENTER&CLOUD,FACILITIES SAFETY,MEDIUM VOLTAGE DRIVES,BATTERY CHARGERS,AUTOMOTIVE,工业电涌保护,MOTOR PROTECTION,RESETTABLE PORT PROTECTION,ACTIVE VAR CONTROLLERS,有源无功控制器,不间断电源,交流电机驱动,基础设施,INVERTERS,UPS,MOBILE &RENEWABLE ENERGY,INDUSTRIAL SURGE PROTECTION,MOBILE ELECTRONIC,保健,SURFACE MOUNT FUSES,电路保护,SPECIALTY FUSES,WEARABLE,BUILDING AUTOMATION,HVDC,数据中心,逆变器,RENEWABLE ENERGY,高频逆变器,可穿戴设备,工业系统,移动和可再生能源,可复位保险丝,INDUSTRIAL CONTROLS,移动电子,电信,CONSUMER ELECTRONICS,手机,HVAC SYSTEMS,DATA CENTERS,APPLIANCES,大功率转换,通信链路,LED LIGHTING SYSTEMS,HEALTHCARE,磁传感,INPUT & OUTPUT RECTIFICATION,SMART METERS,HIGH-RELIABILITY FUSES,电动汽车,INFRASTRUCTURE,电源控制,INDUSTRIAL AUTOMATION,过电流保护,智能电表,安全系统,HAZARDOUS AREA,TEMPERATURE SENSING,控制系统,RFID设备,AUTOMOTIVE ELECTRONICS,楼宇自动化,高压直流,MOBILE,TRANSPORTATION,TELECOM,工业电源,APPLIANCES,工业自动化,电源供应器,VFDS,HEALTHCARE,电池管理,汽车电子,TATION,AC MOTOR DRIVES,商用电涌保护,OVERCURRENT PROTECTION,DATACOM SYSTEMS,可复位端口保护,汽车,LED照明系统,COMMERCIAL SURGE PROTECTION,可再生能源系统,表面安装保险丝,SENSING,INVERTERS,一般工业设备,数据中心和云,可穿戴,INDUSTRIAL FUSES,RENEWABLE ENERGY,INDUSTRIAL SYSTEMS,HVAC,交流应用,过压保护,AEROSPACE,OVERVOLTAGE PROTECTION,PUMP PROTECTION,EV CHARGING INFRASTRUCTURE,SECURITY SYSTEMS,高可靠性熔断器,AC APPLICATIONS,TRACTION SYSTEMS,工业保险丝,RFID DEVICES,DATACENTER EQUIPMENT,暖通空调系统,SOFT STARTERS,LED LIGHTING,BUILDING AUTOMATION,数据中心&云计算,HIGH FREQUENCY INVERTERS,交流电源,EV,LIGHTING PRODUCTS,变频驱动器,POWER CONTROL,INDUSTRIAL POWER PROTECTION,蓄电池充电器,RENEWABLE ENERGY,AUTOMOTIVE,COMMUNICATIONS LINKS,BUILDING AUTOMATION,泵保护,EV INFRASTRUCTURE,特种保险丝,暖通空调,INDUSTRIAL,UPS设备,TRANSPORTATION,消费电子,航空航天,CONTROL SYSTEMS,WEARABLES,GENERAL INDUSTRIAL EQUIPMENT,COMMUNICATIONS DEVICES,POWER SUPPLIERS,危险区域,电动汽车基础设施,工业电力保护,照明产品,RESETTABLE FUSES,交通运输,RENEWABLE ENERGY SYSTEMS,中压驱动器,站,INDUSTRIAL MOTOR DRIVES,输入输出整流,温度传感,INDUSTRIAL POWER SUPPLIES,工业,AC POWER,BATTERY MANAGEMENT,工业控制,MAGNETIC SENSING,电动机保护,MOBILE,电动汽车充电基础设施,通信设备,LED照明,HIGH-POWER CONVERSION,设施安全,可再生能源,DISPLAY PRODUCTS,传感,软起动器,牵引系统,CIRCUIT PROTECTION,工业电机驱动,显示产品,数据通信系统
【技术浅谈】fuse选型指北
fuse的选型说难不难，说简单也不简单，总共大概会涉及到10个方面。有些比较简单，可能要不了1min就行了；有些则比较麻烦，需要查一些数据和图表，做一些计算才能得出结论。OK，那么就请跟着我一点点来吧！
Fuse熔断电压和熔断电流的关系是什么？
Fuse的工作的原理是热熔断，当电流很大的时候，保险丝会发热，由于fuse的材料特性，在高温时会分断开，因此定义为：fuse的额定电压是正常工作时候电压，额定电流也是正常工作时候电流。当保险丝在最大的工作电压下，被熔断时候的电流为熔断电流，一般保险丝的熔断电压不是重要因素，更多的是考虑熔断电流。
Littelfuse EV1K Series Fuse First to Provide 1000Vdc Automotive Grade Protection for Next-Gen Passenger Cars and Commercial EVs
Littelfuse announced the new EV1K Series Fuses, the first Automotive Grade fuse with a rating of 1000 Vdc. They are designed and tested to meet the overcurrent circuit protection needs of the eMoblilty market.
Self Healing Fuses, a New Type of Overcurrent Protection Component
Self recovery fuse is a new type of overcurrent protection component with unique performance and wide application prospects.
Littelfuse Launches Its Class J Fuse Disconnect Switch Combining Switch and Fuses to Simplify Operation and Protection While Saving Space
Littelfuse has launched its Class J Fuse Disconnect Switch. The compact device combines a switch and multiple fuses into a single product offering a simpler way to manually open and close a circuit while safeguarding against overcurrent and short circuits.
DA Technology SMD fuse SF303 is successfully applied to the overcurrent protection of PD charger
DA launched the SMD ,2410 package ,small current, 250AC withstand voltage fuse SF303 series, which is widely used in carrier modules, LED drive power, PD charger，smart sockets, consumer chargers and other occasions.
Does Littelfuse offer Class L fuseblocks?
No - No fuse manufacturer offers Class L fuse blocks. Class L fuses are bolted directly on buss bars or used with bolted-pressure contact switches.
ICP测试报告认证包CCMR保险丝（RoHS通过6C）CCMR保险丝（0.2-20安培）
本报告由Littelfuse, Inc.出具，针对其CCMR熔断器系列产品的RoHS合规性进行认证。报告详细列出了产品使用的原材料，包括钠硅酸盐、硅砂、三聚氰胺本体、保持管、弹簧、电极、盖子、铜镍合金元素、焊料、锡浸液、铅、纱线、焊料和粘合剂等。报告还提供了所有可测量物质的ICP数据，并详细说明了测试方法和结果，确认产品中不含RoHS指令限制的物质。
LITTELFUSE - FUSE,保险丝,CCMR FUSE
Littelfuse Adds 3425L Series SMD Resettable PPTCs Series Created for High-Voltage Applications
Littelfuse, Inc. announced the release of the 3425L Series SMD resettable PPTCs, an extension of the Littelfuse PolySwitch® family of resettable overcurrent protection devices, which provides resettable, high-voltage overcurrent protection in a compact, surface-mounted 8763 mm (3425 mils) size.
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