【应用】金瑞电子提出USB 3.0过电流保护PPTC组件应用解决方案，在阻值、静电敏感度等方面具有优势

时间： 2022-10-21 来源：金瑞电子官网

技术问答

随着高新技术的不断提升，外围设备也在不断更新换代，在USB应用方面，USB3.0除了提升速度外，同时对电力的供应也有所提高。针对业界常用的过电流保护组件高分子正温度系数热敏电阻（PPTC）做介绍，并于在USB 3.0的应用下比较与低电压半导体开关的差别。

此外，金瑞电子将对USB 3.0与USB 2.0的差异，提出USB 3.0过电流保护PPTC组件应用建议，并以新一代薄型低电阻表面粘着PPTC组件为例说明新的导体材料开发进程，透过运用新材料，可为当前的超薄型电子产品提供良好过电流保护。

由于电子产品对速度、功率的要求不断提高，自去年11月USB 3.0规格底定后，除了速度提升至5Gbps外，对电力供应的要求也从500mA提高到900mA。不管是在系统端或是组件端，新的速度和功率都带来了全新挑战新规格涵盖了新的数据传输协议、电源管理架构，到确保资料成功地在主机及装置间传输。不过，在这些USB 3.0的升级中，唯一没有改变的，就是对于安规的要求。系统工程师现在需要分配足够的电力到这些连接埠，并谨慎地整合‘过电流保护’功能。

目前I/O连接埠的设计通常有整合电源线，直接供电到外围设备，或提供电力读取装置端中EEPROM的资料。为了防止在未连接的状态下发生短路，或连接上装置后发生的异常状况造成过电流，这些电源接脚都需要做好保护的功能。PPTC是非常适合提供此种保护的组件之一，而且也成为了电子设计中的主流，符合各种规范需求或安规要求，如UL 60950。

用于过电流保护的PPTC

PPTC是一种非线性、根据温度而变化的电阻。一般情况下，PPTC组件拥有极高的导电度，所以电路可以正常运作。但是当过电流状况发生的时候，此高电流会在PPTC组件上产生足够的能量（焦耳热效应）以超过其转移温度，造成104到106倍的电阻值弹跳。因此可排除过电流状况，达到保护电路及组件的目标。

在USB 3.0的规范中，明确要求使用限电流组件作为电源端之保护，而PPTC组件及低电压半导体开关常被用来做此限电流的解决方式。大部分的时候，基于多种考量，工程师比较偏好使用PPTC组件来防止电路受到损害。因为可支配的电流量在USB 3.0中提高了，限电流的组件需要通过更多电流，但却同时要保持一定的压降。表1为在USB 3.0应用中，PPTC组件与低压半导体组件的比较，在价格、阻值、最大故障电流能量及静电敏感度等方面均更具优势。

相较于USB 2.0，USB 3.0建立了新的电源管理结构，并定义了新的连结状态及机制，以达到更好的整体电源效率。而在电源供应的分配上，3.0规格大致与2.0相同，但提升了电力需求且放宽了压降要求。SuperSpeed装置在与主机完成初始设定后，就可以使用到900mA的电流。在供电电压的要求上，主机上的根连接端口或HUB上的连接埠都从原本的4.75V降到了4.45V，且由USB供电的装置必须在4.00V就要能够正常运作。其它规定像是瞬间电流的限制、主机休眠或待命模式下的限流等，除了更新电流配置到150mA或高功率的900mA外，其它要求都与旧规格一样严谨。

目前，针对USB 3.0的过电流保护，业界已出现了新的PPTC组件，可确保设计符合USB 3.0版规范要求。例如，尽管USB 3.0降低了在电源端的电压要求，但新一代PPTC组件仍可确保PPTC的压降在电流全载时不超过0.1V，除可确保与USB 2.0装置的兼容性以外，也为主板上其它组件或线路保留了更大的设计余裕。此外，新一代过电流保护组件皆能够在50℃以上高温时保持电流全载且不动作，避免PPTC组件因为温度的关系（thermal derating）而误动作，尤其是在桌上型计算机的后端USB端口。

在USB应用中PPTC与半导体开关比较

USB应用中推荐使用JK-nSMD150，JK-SMD1210-150，JK-nSMD200，JK-SMD1210-260.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由Iris虹转载自金瑞电子官网，原文标题为:USB 3.0过电流保护PPTC组件应用解决方案，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。

全部评论（0）

暂无评论

【应用】PPTC热敏电阻JK250-180T实现ADSL系统过流保护，性能可靠且大大减少了设备的使用和维修成本

本文分享在ADSL系统中使用金瑞电子推出的JK250-180T型PPTC热敏电阻不仅对过电流故障提供了更为严格的保护而且性能可靠、安装方便、大大减少了设备的使用和维修成本。

应用方案发布时间 : 2022-09-11

【应用】竞沃电子PPTC为USB端口提供专业的电路保护解决方案

USB端口因频繁插拔、松动等原因会受到浪涌电流的威胁。在USB 3.0的规范中，明确使用限电流组件作为电源端之保护。竞沃电子为USB端口提供专业的电路保护解决方案。

应用方案发布时间 : 2020-09-03

【应用】金瑞电子PPTC热敏电阻用于LED照明中的过流和过热保护，具有低电阻和正温度系数特性

深圳市金瑞电子材料有限公司针对LED照明应用开发了一款新产品。该产品在环境温度65℃下可以保证350mA电流正常通过，可在环境温度超过85℃时进行保护，通过合理设计、配置，可以分别以关断或调暗的方式对LED灯具进行保护。

应用方案发布时间 : 2022-09-15

音特电子（Yint Electronics）电路保护元器件选型指南

目录- 公司简介瞬态抑制二极管静电保护器件半导体放电管气体放电管压敏电阻自恢复保险丝热敏电阻肖特基二极管整流二极管高压二极管稳压二极管场效应管霍尔传感器热保护器共模滤波器低压差线性稳压器

型号- 30V-050,YAZ1P5D47,25D301K,SMAJ6.0CA,SMAJ40CA,ESDLC24VD8B,3R075L-8X10,HLT9P04C,HLS150N30K,YAZ1P5D51,5.0SMDJ170A,P8SMB120CA,16V-110,15KP58A,SMD1206-351,YAZ1P5D3V3,ESDLC15VD3B,YAZ1P5D3V6,RS3BBF,YAZ1P5D56,5D361KJ,HLS135N100,P8SMB13CA,YAZ1P5D3V9,HLS80R1K5,SMDJ78CA,HLP9N90,ES2JBF,ESDLC8V0D3B,S2MB,1812 SERIES,PGB0603-05,YC2M2012B121GBE,YAZ1P5D62,Y1ZP35D43G,HLS80R1K1,10D560KJ,SMCJ14CA,5D121KJ,P8SMB60A,S2MF,YAZ1P5D68,HLT30P55,HLS70N40K,HLP9N80,30V-075,5.0SMDJ85A,PGB0603-12,SMCJ100CA,SMBJ300A,YAZ1P5D75,5KP30A,HLS55N100PF5,SMF120CA,SMBJ150CA,16V-135,SMDJ170A,SMAJ70A,33D-7,250V SERIES,HLP9N70,33D-5,PGB0603-24,HLT9P03C,SMDJ58A,33D-9,HLG3401A1N,32D122K,SA48CA,SMCJ30A,YAZ1P5D82,ESD12VAP,HLP2P06C,10D-11,HLP14N80,SA180A,10D-13,10D-15,15KP54A,20D781KH,20D781KJ,15KP120CA,YAZ1P5D91,SA22CA,P6KE8.2CA,SMAJ100A,16V-160,5.0SMDJ170CA,SA110CA,HLS60200K,ESD12VD3,HLT30P10,SMDJ54A,10D680KJ,SMD1210-150-6V,SMDJ160CA,3KP14CA,SMBJ400CA,5KP SERIES,SMF36CA,ESD24VAP,ESD12VD8,ESD12VD5,7D220KJ,P6SMB51CA,ESD12VD9,10D K SERIES,HLT30P06,1.0SMB22CA,SMCJ220CA,32D561K,2R230S-6X4.2,HLT30P03,HLS187N80,5D241KJ,SMD1206-075-16V,SMD2920-200-16V,1.5KE51A,7D781K,HLS170N30PF5,P6SMB,HLS60R580,SA70CA,1.5KE36CA,5D121K,LC SERIES,DA SERIES,5KP36A,P6SMB16A,SMAJ18CA,SM8,SA17CA,1.5KE170CA,SMD1812-351,25D122K,5KP90CA,S SERIES,P0080TA,SMF,SMDJ51A,3KP45CA,P6SMB15A,ESD3V0J4,3R230S-6X8,3KP58CA,HLP38N30,10D471KH,25D561K,1.5KE56A,ESD8V0D5B,US2B,US2A,10D471KJ,US2K,HLS12N100C,US2J,30V-900,US2G,SA5.0CA,US2D,HLP4P20,RS2AB,20D911KH,YAZ1P5D XXX,HLR08U02,20D911KJ,RS2AF,5KP24CA,US2M,P6SMB16CA,HLP110P06,SMBJ90A,10D-20,SMF64A,US1B,US1A,SMBJ12CA,2R***L-5.5X6 SERIES,US1J,P6SMB13A,US1G,US1D,US1M,ESDLC24VD3B,US1K,SMBJ5.0A,HLT6N06,30V-090,SMD2920-100-33V,ESD8V0D3B,HLS20100N2,5D561K,1.0SMB6.8A,Y1ZD9V1,HLS120R800,P6SMB12A,YC2M2012B,20D220K,P8SMB75CA,YAZ1P5D10,32D911K,YAZ1P5D16,YAZ1P5D15,YAZ1P5D18,YAZ1P5D12,YAZ1P5D11,P6KE180CA,YAZ1P5D13,Y3ZP2D5V6,Y5ZP2D XXX,P6SMB10A,P6SMB11A,HLR75S12,Y3ZP2D5V1,MF58-203F-3950,25D SERIES,P8SMB64A,YAZ1P5D20,HLP75N08,P6SMB100CA,YAZ1P5D27,5.0SMDJ78CA,SMD0603-003-30V,YAZ1P5D22,20D,YAZ1P5D24,Y3ZP2DXXX,10D101K,1.5KE10CA,YAZ1P5D30,7D471K,YAZ1P5D39,SMF60A,YAZ1P5D33,25D431K,YAZ1P5D36,5D820KJ,5D560K,P6KE27CA,5KP33A,P6SMB82CA,10D102K,14D911K,20D221K,YAZ1P5D43,7D470K,5KP11CA,HLR12U12,YAZ2D8V2,20D470KJ,P6SMB47CA,RS2GB,20D K系列,HLT60N03,HLT60N02,HLS60150K,MF52A-104F-3950,1.5KE540A,HLT60N08,RS2GF,HLT60N04,SMDJ200CA,HLT60N06,16V-1000,SMF70A,SMDJ190CA,3KP64A,HLR12U06,HLR12U04,HLR12U02,10D112K,SMAJ48CA,SMBJ43CA,10D680K,HLT60N10,14D561K,1.0SMB9.1A,HLS247N120Q,1N4001W,S3AF,S3AC,SMCJ7.5A,SMAJ400A,S3AB,600V-110,60V-300,SMF19CA,ES3DBF,SA90A,34S471K,10D241K,SMD1206-075-6V,SMBJ18A,MF52A-303J-4200,HLP840,14D431K,HLT4P06,P8SMB SERIES,25D,1N4002W,MF52A-104H-4100,SMAJ300CA,P6KE220CA,SA40CA,25D911K,HLP830,YC2M2012B161GBE,1N4003W,3KP9.0CA,1.5KE510CA,SMD1812-421,MF52A-302J-3950,HLT5N04A1N,SMD1210-035-16V,Y3ZP2D18,14D681KH,P6KE100CA,2R300S-8X6,SMBJ16A,MF52A-103F-3380,HLS145NH80PF5,14D KJ 系列,Y5ZP2D XXX SERIES,SMBJ30CA,P6SMB SERIES,5KP28A,14D681KJ,S3DB,Y3ZP2D10,S3DC,Y3ZP2D12,HL78MXX,Y3ZP2D11,Y3ZP2D14,Y3ZP2D13,Y3ZP2D16,0603,Y3ZP2D15,YAZ1DXXX SERIES,14D112KJ,S3BF,HLT4P10,1N4004W,SMF110A,S3BB,S3BC,SMD1210-200-6V,60V-375,SMAJ8.5CA,SMAJ180A,HLP12P06,SMBJ17A,SMF85CA,RS2BB,SMBJ120CA,14D121K,14D112KH,RS2BF,14D561KJ,5KP8.0A,1N4005W,14D561KH,5KP250A,3KP75CA,SMD1812-401,Y3ZP2D39,SMBJ14A,HLR24U12,P6SMB18A,7D621KH,SMDJ16CA,7D621KJ,14D560K,600V-160,Y3ZP2D33,Y3ZP2D36,SMBJ130A,S3DF,RS2DB,1N4006W,ES2ABF,Y3ZP2D30,RS3KBF,5KP120CA,SA100A,SMBJ15A,SMAJ170CA,2R400L-8X6,RS2DF,Y3ZP2D20,Y3ZP2D22,600V-150,Y3ZP2D24,Y3ZP2D27,Y1ZP35D7V5G,YC2M 2012B SERIES,100D-9,1N4007W,YAZ1D6V2,ESD24VD8,HLP9N20,SMBJ12A,SMAJ6.0A,ESD24VD3,P6KE62CA,ESD24VD5,YAZ1D6V8,20D511KH,20D511KJ,SA7.5CA,ESD36VD3,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,HLG2301BA1N,5.0SMDJ48CA,Y5ZP2D3V9,Y5ZP2D3V3,ES5JC,Y5ZP2D3V6,SMBJ13A,15KP51A,Y5ZP2D3V0,S3GF,P6KE75A,S3GC,S3GB,10D201KJ,SMCJ150A,30V-110,HLS18N200K,SMD1812-200-16V,3R075L-6X8,SA6.0A,S3JF,5KP8.5A,SMAJ78A,S3JB,YAZ2D110,S3JC,ESDSMDA15C,HLP14N10,ESD36VAP,US3ABF,5KP120A,30V-120,SMBJ10A,SMD1210-075-6V,SMBJ11A,SMAJ22CA,7D180KJ,5D330KJ,SMCJ6.5CA,HLS2045N2,2R***S-8X6,YAZ2D100,SMAJ75A,SMCJ36A,RS2KB,SMDJ210A,SA190CA,15KP75CA,RS2KF,7D K SERIES,5.0SMDJ75A,P0300DA,ES5GC,SMF54CA,YAZ2D130,1.5KE100A,3R600L-6X8,P6SMB170A,HLS16N100C,SMCJ45CA,3KP60A,US5GBF,RS2JB,15KP240CA,HLT40P03PF5,RS2JF,HLT40P03PF4,P6KE75CA,S3KB,HLT9P01C,YAZ2D120,S3KF,S3KC,SMAJ6.5A,SMBJ440A,Y1ZP35D47G,RS2MF,7D K,SMCJ58CA,HLT20N10,HLS20150K,SMDJ7.5CA,SMD1206-301,RS2MB,MF52□□□4300,5.0SMDJ17CA,1.5KE18CA,ESD3V3APB,14D201KJ,3R200S-5X7.6,5KP60CA,HLT15N03C,5.0SMDJ70CA,YAZ2D150,HLT20N06,HLS90N60PF5,SMCJ33A,7D K系列,HLT30ND03PF4,20D751KJ,20D751KH,SMD1206-050-24V,YC2M1012B121FBP,3R470L-6X8,L SERIES,20D K SERIES,S3MC,S3MB,ES5DC,HLT20N15,HLS250N80,YAZ2D140,14D301K,SA6.5A,S3MF,5.0SMDJ33CA,P0640S,SA36CA,SMBJ,HLS90N30PF5,SMDJ20CA,SMF6.0A,HLR30U03,HLS130N85,LB SERIES,HLR30U02,HLR30U04,3D-13,RS1G,HLR30U06,RS1D,7D681KJ,3D-11,ESDLC5V0D8B,RS1B,YAZ2D170,20D361K,SMD1210-020-30V,HLS8060K,RS1A,P8S

选型指南 - 音特电子 - 2021/10/18 PDF 中文下载

优恩半导体（UNSEMI）ESD静电保护/雷击浪涌保护器件/串口芯片产品选型指南（中文）

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

选型指南 - 优恩半导体 - 2021 PDF 中文下载

The Operating Principle of Self Recovering Fuse PPTC in USB Protection

Self healing fuse (PPTC) is a very important electronic component widely used in the protection of USB interfaces. It has the characteristics of automatic protection and automatic recovery. When the current exceeds the set value, the circuit will be immediately cut off, and when the current returns to the normal range, the path will be automatically restored.

技术探讨发布时间 : 2024-08-29

金瑞电子（JK）PPTC自恢复保险丝选型指南

描述- 深圳市金瑞电子材料有限公司（简称金瑞公司）成立于2002年，是专业从事高分子PTC(简称PPTC)研发、生产、销售的国家级高新技术企业。金瑞公司拥有中国科学院金属研究所（沈阳）的技术背景，自主研发JK品牌的插件式，常规表面贴装，低阻表面贴装，圆环，条状式四大系列PPTC自恢复保险丝产品，产品型号有近1200个，耐压值有从6V到600V的各种产品。现在，JKPPTC产品覆盖了电子电器的众多领域。

型号- JK-P380,JK-NSMD350L-12,JKH30-050,JK-SMD0805-350L-12,JK-SMD0805-075L-12,JK-NSMD300L,JK60-025,JK-MSMD190L,JK250-020U,JK-NSMD050-30,JK-P260,JK-SMD0805,JK-MSMDL SERIES,JK60-030,JK30-090,JKH16-900,JK-MSMD075-33,JK-MSMD600L,JK16-1400,JK-NSMD050-24,JK-NSMD100-13.2,JK-SMD1210-035-30,JK-MSMD075,JK16-800,JK60-135,JK16-030(T),JK600-150U,JK-SMD0805-200L,JK60-017,JK-SMD1210-500L-12,JK-D170,JK-MSMD075-24,JK60-020,JK-D175,JK-SMD-0603-200L,JK-MSMD110-16,JK-SMD1210-450L-12,JK-SMD1210-175L-12,JK-SMD1210-350L,JK-SMD2920 SERIES,JK-MSMD500L-12,JK-MSMD500L,JK60-005,JK250-030U,JK60-250,JK30-075,JK60-010,JK60-375,JK-SMD1210L SERIES,JKH16-800,JK-MSMD050,JK16-1300,JK16-700,JK-MSMD850L,JK-NSMD650L,JK600-160U,JK-MSMD750L-12,JK-H1-4,JK-H1-2,JK-H1-3,JK-MSMD160,JK-MSMD450L-12,JK250-145U,JK-P180,JK-NSMD600L-12,JK-MSMD200-12,JK250 SERIES,JK-SMD0805-110L,JK-MSMD200-16,JK16-075(T),JK60-075,JK-SMD1210-050,JK-SMD-0603-300L,JK-SMD0805-010-24,JKH16-700,JK-SMD0603-050,JK-MSMD150,JK250-120U,JK-MSMD030,JK-SMD1210-175,JK-P175,JK16-200(T),JK-MSMD300L-12,JK-NSMD260L-12,JK60-065,JK-NSMD500L,JK60-185,JK-MSMD700L,JK16-600,JK-SMD0805-110L-12,JK-M900,JK-SMD0603-040,JK-SMD1210-200L-12,JK-H1,JK-MSMD260,JK-H3,JK-SMD1210-650L-12,JK-H2,SMD0805-010-24,JK-NSMD050-16,JK-MSMD020,JK-H9,JK-NSMD400L-12,JK-NSMD750L,JK-H8,JK-H5,JK-H4,JK-H7,JK-H6,JK60-050,JK-SMD0805-125L-12,JK-SMD1210-075,JKH16-600,JK-SMD1210-260L,JK-SMD0805-400L-12,JK-SMD1210-175L,JK-NSMD550L-12,JK-P070,JK-SMD1210-380L,JK-P190,JK-MSMD010,JK16-135(T),JK-MSMD014,JK-NSMD400L,JK-SMD1210-300L-12,JK-SMD0805-125L,JK60-160,JK-M800,JK60-040,JK-NSMD650L-12,JK16-500,JK-SMD1210-150L,JK30-800,JK-MSMD700L-12,JK□□□□□□-□,JK60-300,JK-M1000,JK-P300,JK-MSMD125,JK250-060U,JK-P420,JK-M270,JK-MSMD050-24,JK-NSMD600L,JK16-090,JKH16-500,JK-SMD1210-650L,JK-NSMD100,JK130-110,JK-MSMD110,JK-SMD1210-750L-12,JKH30-100,JK-MSMD014-33,JK250-180T,JK-M140,JK250-180U,JK-M260,JK-MSMD550L-12,JK-D210,JK-P SERIES,JK30-900,JK250-600U,JK-M175,JK-P200,JK600-110U,JK-SMD-0603-035L,JK-MSMD800L,JK130,JK250,JK-SMD1210-200L,JK-MSMD650L-12,JKH16-400,JK-SMD1210-190L-12,JK130-135,JK-NSMD200,JK130-017,JKH16-1000,JK130-015,JK-NSMD700L-12,JK-P550,JK250-1000U,JK-SMD0805-260L-12,JK-SMD0805-350L,JKH SERIES,JK130-010,JK-SMD1210-550L,JK130-250,JK-M190,JK-P100,JK-MSMD200,JK30-600,JK-SMD125L,JK-SMD1210-700L-12,JK250-040U,SMD0805-075,JK-MSMD SERIES,JK-SMD0603 SERIES,JK60-110,JKH16-300,JK-MSMD600L-12,JK-SMD100L,JK-SMD0805-175L,JK250-1200U,JK-P210,JK-P450,JK-MSMD125-8,JK-SMD0805L,JK-MSMD900L-12,JK-SMD0805-150L,JK250-800U,JK-NSMD050-13.2,JK-SMD0805-380L,JK130-200,JK30-700,JK16-050(T),JK-SMD200L,JK-NSMDL SERIES,JK-MSMD300,JK-SMD-0603-100L,JK60-200,JK-P120,JK-NSMD SERIES,JK250-050U,JK-SMD0805 SERIES,JK-SMD1210L,JK-MSMD110-24,JK-SMD0805-260L,JK-SMD300L-6,JK-MSMD260-16,JK-MSMD260-12,SMD0805-050,JKH16-200,JK-SMD1210-450L,JK16-110(T),JK16-900,JK-MSMD050-30,JK-MSMD190L-12,JK-MSMD800L-12,JK-P350,JK-MSMD260L,JK-SMD-0603-125L,JK-MSMD900L,JK-NSMD700L,JK-H3-2,JK-H3-3,JK-MSMD110-33,JK-NSMD150L,JK-NSMD380L,JK72-160,JK72-040,JK250-400U,JK-M550,JK-NSMD050,JK30-400,JK-NSMD075-13.2,SMD0805-035,JK-M430,JK-MSMD150-24,JK16-135,JK130-185,JK16-010,JK130-065,JK-SMD0805L SERIES,SMD0805-030,JK-NSMD260L,JK-NSMD500L-12,JK-SMD1210,JK-SMD1210-110-16,JK72-030,JKH16-1300,JK-NSMD175L,JK-SMD-0603-050L,JK-MSMD850L-12,SMD0805-020,JK30 SERIES,JK-SMD1210-500L,JK-M300,SMD0805-025,JK72-025,JK-SMD1210-110-12,JK-SMD1210-260L-12,JK130-075,JK-NSMD,JK-NSMD035,JK72-065,JK-M SERIES,JK72-185,JK-M450,JK-SMD-0603-075L,JK-NSMD150,JK-NSMD030,JK30-500,JK-SMD0805-110,JK-MSMD350L,SMD0805-010,JK600 SERIES,JK16-030,JK-SMD1210-350L-12,JK-P600,JK-M210,JK-SMD1210-600L-12,JK-SMD0805-175L-12,JK72-050,JKH16-1400,JK-SMD1210-380L-12,JK-SMD0805-100,JK-MSMD400L-12,JK130-090,JK-SMD0805-075L,SMD0805-005,JK16-025,JK-NSMD012,JK-SMD250L,JK130-025,JK-NSMD016,JK30-200,JK60-500,JK250-080U,JK-M350,JK-SMD-0603-150L,JK-MSMD550L,JK-NSMD010,JK16-050,SMD0805-110,JK-SMD1210-400L,JK-SMD1210-400L-12,JK-D,JK130-020,JK-H,JK-NSMD025,JK-NSMD175L-12,JKH16-1100,JK-NSMD450L-12,JK72-075,JK-SMD1210-075-24,JK-SMD0603L,JK-SMD-0603-175L,JK-SMD-0603-260L,JK-NSMD020,JK-NSMD750L-12,JK-SMD0805-300L-12,JK16-160,SMD0805-100,JK16 SERIES,JK-P730,JK-SMD1210-750L,JK130-030,JK-NSMD110,JK16-025(T),JK250-090U,JK-M370,JK30-300,JK16-075,JK-MSMD260L-12,JK-NSMD010-33,JK-D200,JK130-160,JK130 SERIES,JK-SMD1210 SERIES,JK130-040,JK250-2000U,JK-SMD1210-550L-12,JK-MSMD350L-12,JK-M,JK-NSMD005,JK-P,JK-M120,JK60 SERIES,JK-NSMD300L-12,JK72-090,JK-MSMD450L,JK130-050,JK-SMD1210-300L,JK16,JK-MSMD300L,JK-SMD185L,JK-SMD0805-050,JK30-120,JK-SMD1210-005,JK-SMD0603-010,JK30-250,JK-M950,JK250-100U,JK16-160(T),JKH,JK-SMD075L,JK-SMD0603L SERIES,JK72 SERIES,JK-SMD1210-010,JK-NSMD450L,JK-MSMD650L,JK16-1000,JK30-135,JK-M700,JK-SMD0603-003,JK-SMD1210-020,JK-SMD0603-005,JK-NSMD200L-12,JK-SMD0603-004,JK16-010(T),JK-SMD1210-150L-12,JK16-400,JK72-300,JK-SMD300L-16,JK-SMD1210-035-30V,JK-SMD0805-380L-12,JK-SMD260L,JK-NSMD380L-12,JK-SMD030L,JK-SMD200L-24,JK250-1500U,JK-SMD0805-075,JK-NSMD350L,JK-H SERIES,JK-M85

选型指南 - 金瑞电子 PDF 中文下载

金瑞电子PPTC自恢复保险丝选型表

金瑞电子PPTC自恢复保险丝选型，V(max): 0.05Vdc~250Vdc, I(max): 0.15A~50A, Pd[Typ]: 0.26W~6W

产品型号	品类	封装备注	V(max)(Vdc)	I(max)(A)	I(hold)@25℃(A)	I(trip)@25℃(A)	Pd[Typ](W)	Current(A)	Time(Sec)	R1min(Ω)	R1max(Ω)
JK250-020U	PPTC高压插件自恢复保险丝	插件	250Vdc	3A	0.02A	0.05A	1W	0.5A	0.5Sec	50Ω	160Ω

选型表 - 金瑞电子立即选型

UMX2211 USB 2.0 HIGH-SPEED (480Mbps) DUAL 2:1 MUX/DEMUX ANALOG SWITCH

型号- UMX2211G-Q10-1814-R,UMX2211L-S14-R,UMX2211L-Q10-1814-R,UMX2211G-S14-R,UMX2211

数据手册 - UTC - 2023/4/18 PDF 英文下载

【选型】普罗森美（PROSEMI）电路保护产品选型指南

目录- 品牌及产品线介绍功率型TVS瞬态抑制二极管 ESD静电抑制器高分子聚合物ESD TSS 晶闸管电涌抑制器陶瓷气体放电管 PPTC 可恢复保险丝一次断保险丝熔断器电流感应电阻开尔文结构电流感应电阻

型号- P4SMFL,SMBJ,PTOXXX,PTO88,FW5,SCT,FW7,PTT233,ESJ10,BS88,SRF0805P,PTT236,FW10,LFM,SRF1210P,SFMM,1206FA,2410FA,SRF1206P,EVH30,UPEP,PV1500F,PG2A18RXXX,1245TD,SMAJ,PTN062,ESP3803,PV1500E,6CT,SEET,EVH38,LSP,1240FH,2410BP,PV1500A,SMF,PTN102,PTD322,PTD122,HMSB75,PSMXXX,HMSD75,LFMM,PG8T10RXXX,LCT,PTN2510,0603TD,1206HV,EVCT,14CT,SET,SRC,SMDJ,10PVT,10CT,UPE4C,SRF2920P,FW75,SM8S,2410TD,PG1400,PDOXXX,PG2G12RXXX,SFM,2410LC,ESL,PTN166,SRF1812P,EVH10,EVH30M,5.0SMDJ,1206TD,EVH30S,PG8D6RXXX,5CT,EVH10S,SMCJ,LMJ,PTN205,EVH18,EVH38M,1245FA,EVH38S,EVH38SH,EVH10M,PG5D5RXXX,EVH18S,EVH15,1240FHDHC45,SRF0603P,EVH18M,ESJ5,LET,ESJ7,0603FA

选型指南 - 普罗森美 PDF 中文下载

优恩半导体（UNSEMI）ESD静电保护/雷击浪涌保护器件/串口芯片产品选型指南（英文）

目录- Company Introduction ESD Protection Diodes（ESD） Transient Voltage Suppressor（TVS） Thyristor Surge Suppressors（TSS） Sidac Thyristor（SIDAC） Metal Oxide Varistors（MOV） Gas Discharge Tube（GDT） Spark Gap Protectors（SPG） Micro Surge Protection Module（Micro-SPD） Polymeric Positive Thermal Coefficient（PPTC） RS485/422 Transceiver CAN Transceiver RJ45 Modular Jack connectors Small signal devices EMI Protection devices

型号- SMDJ-AT SERIES,UNS3K,07DXXKJ,UN2E8-XXXML SERIES,SMBJ,UN2E5-XXXLL SERIES,40DXXK 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,10DXXK SERIES,10DXXKEC SERIES,UN490E,UN3E8-XXXHP,UNSDC12V-3L,07DXXK,07DXXL,UN3E5-XXXMSMD,20DXXK SERIES,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,1.5SMC,SA,UN2E8-XXXML,UNS4032 SERIES,UN2E8-XXXHL SERIES,UN2E5-XXXL HV,UNSDC58V-2L,SMD1210 SERIES,PXXXSD1,UN2E5-XXXLSMD,PXXXEC SERIES,UN3485,UN16,5KP,1.5KE SERIES,TP5.0SMDJ,14DXXL SERIES,07DXXKBC SERIES,UNS2K,UN2E8-XXXMSMD,UN2E5-XXXLL HV SERIES,10DXXKEC,UNSDC24V-2L,32DXXL SERIES,14DXXKJ SERIES,UN3E8-XXXHM SERIES,SMCJ,TPSMB SERIES,UN1210-XXXBSMD SERIES,UN3E6-XXXM,TPSMDJ SERIES,UN65HVD233,UN65HVD234,UN65HVD232,UN65HVD230,SMBJ-AT,UN2E5-XXXL,UN2E8-XXXM,UN1210-XXXBSMD,10DXXKJ SERIES,34SXX,KC SERIES,UN2E6-XXXLSMD SERIES,UN2E8-XXXH,UNB-XXXN-SMD,UN3E8-XXXHMF,32DXXKJ SERIES,UN1050,UN3232E,UNA-XXXM-SMD,UN1050ISODUB,PXXXG,32DXXKJ,40DXXK,UNS3220,UNB-XXXM-SMD,40DXXL,UN3085NE,SMCJS,UN2E8-XXXHSMD,TPSMB10J,32DXXK,32DXXL,PXXXEC,UN30,PXXXEB,PXXXEA,30KP,P6SMB SERIES,PXXXSC-2L SERIES,15KP,PXXXSC-2L,0603,SMD2920 SERIES,10SMBT,14DXXKJ,UN82C250,UNSRS485-2HL,UN82C251,10SMBJ,05DXXL SERIES,25DXXL SERIES,TPSMC SERIES,UN2H8-XXXL HV SERIES,UNSDC58V-3L,SM8Z SERIES,TPSMCJ SERIES,SM5Z,UN6,UN3E5-XXXL,UN3088E,KXXXG SERIES,PXXXTB,PXXXTA,UN2E5-XXXLSMD SERIES,KA SERIES,UNB-XXXN-SMD SERIES,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,PXXXSA SERIES,UNSRS485-2H,SMCJ-AT,25DXXKJ SERIES,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,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,20DXXL SERIES,25DXXKJ,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,KD,6.0SMAJ SERIES,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,UNS4032,0201 SERIES,UN1206-XXXASMD,UN2H8-XXXL HV,5.0SMDJ-AT,UN3E5-XXXL SERIES,20DXXKYC,UN3485S,UN3E6-XXXM SERIES,34SXX SERIES,UN2E5-XXXLL,05DXXK SERIES,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,32DXXK SERIES,34SXXJ SERIES,SMD1206 SERIES,SMBJ-AT SERIES,TPSMA SERIES,UNC-XXXM-SMD,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,07DXXK SERIES,SMD1206,UN0603,UN1812,20DXXL,20DXXK,PXXXEB SERIES,10SMBT SERIES,1.5KE,14DXXK SERIES,UNC-XXXN-SMD,05DXXKJ SERIES,3KP SERIES,P6KE,07DXXKJ SERIES,UNS3K SERIES,KXXXSD1 SERIES,TPSMC,SMD0805,25DXXK SERIES,TPSMB,TPSMA6J SERIES,TPSMA,TPSMBJ SERIES,34SXXJ,20DXXKJ,SMD1210,20DXXKJ SERIES,SMDJ SERIES,UN2220,UN2E8-XXXM SERIES,TPSMA6J,UNSDC12V-2L,1.5SMC SERIES,15KPS SERIES,SMAJ-AT,PXXXLA SERIES,UN3E5-XXXLSMD

选型指南 - 优恩半导体 - 2021 PDF 英文下载

【产品】符合RoHS规范且无卤素的表面贴装PPTC JK-nSMD（L），工作电流1.5~7.5A

金瑞电子推出JK-nSMD（L）系列表面贴装PPTC符合RoHS规范且无卤素，可以快速跳闸，1206尺寸，表面贴装，呈固态，工作电流：1.5A~7.5A，最大电压：6V/12V，工作温度：-40℃~85℃，具备CSA，UL，TUV认证。

产品发布时间 : 2023-01-31

【产品】贴片1206封装PPTC 1206N系列自恢复保险丝，电压6V~60V，电流0.05A~2A

贴片1206封装PPTC 1206N系列自恢复保险丝是电安科技推出的广泛应用于电子烟、充电宝、USB口，蓝牙耳机，工业产品等市场领域的一款普通阻抗系列自恢复保险丝。 1206N系列自恢复保险丝的核心是由高分子材料和导电颗粒组成，1206封装，电压从6V到60V，电流从0.05A到2A，工作时的环境温度为-40~85℃，为普通阻抗系列，符合Rohs环保要求。

新产品发布时间 : 2020-03-29