【选型】65W PD快充电源输入过流防护推荐力特延时熔断保险丝39213150000,分断电流能力达35A
为避免65W PD快充电源输入因负载短路异常造成燃烧风险,通常在220VAC电源输入加一款保险丝做过流防护,选型因素参考如下:
1、电压/电流:市面上一般选用250VAC、3.15A插件封装延时熔断保险丝设计;
2、安规要求:为满足进出口安规要求,一般还需要通过3C、UR、VDE等安规认证;
3、小体积。
针对如上的设计需求,推荐选择LITTELFUSE(力特)TE5延时熔断保险丝39213150000,采用防电击外壳设计,最大额定工作电压250VAC,额定工作电流3.15A,分断电流能力达35A,工作温度范围-40℃~125℃,典型电性参数参考如下图1所示。
图1:Littelfuse(力特)延时熔断保险丝39213150000典型电性参数
推荐理由如下:
1、分断电流能力35A@A50VAC,具有高的安全切断电流能力;
2、典型冷态电阻0.017Ω,低内阻,具有低的热损耗特性;
3、通过VDE、UR、3C、IC、CE、PSE等多种安规认证,可满足国内、以及欧美日等口安规认证要求;
4、小体积:最大尺寸仅8.5mm×8mm×4mm,满足小型化设计,相关尺寸图参考如下图2所示。
图2:Littelfuse(力特)延时熔断保险丝39213150000典型尺寸
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【选型】Littelfuse(力特)保险丝电路保护器件选型指南
目录- 保险丝特性/术语/考量因素 选择清单 标准 包装/零件编号 免责声明 表面贴装保险丝 径向引线型保险丝 轴向引线型和管式保险丝 管式保险丝座 特殊应用保险丝
型号- 45302.5,0977016.XEP,03540903ZXGY,0154.125,03540821ZXBL,0482 0007ZXB,03540911ZXGY,01550009ZXA,111 501,111 505,111 506,0454003.,0454001.,01550009ZXU,3453HS3-010,03540001ZXGY,800,801,03540806ZXGY,802,454007,803,804,454005,454004,0477016.XEP,454003,0454002.,807,808,0482 0019ZXB,015401.6,015401.5,0100 0054,208 000P,0977.800XEP,0216 000XP,154.315,820 20,0453.250,0215.125XEP,345 101,225 000P,810,811,640 0000 1603,813,814,815,816,0482 0007ZXP,559 0000 00 01,0154.375,0275025.,121004,282008,65800001XXX,121001,282007,820,121002,821,282002,0100 0058,823,824,282001,0100 0056,3453LF2-010,03540912ZXGY,154.375,0216.800XEP,03540807ZXGY,100 058,0453002.,0453.080,100 054,100 056,01550114ZXA,830,03540902ZXGY,831,0281 0008H,0107 0002,853 0000 1009,834,0454007.,835,837,0477.800XEP,279 000,154.125,0106 0001,216SP,800 01,0154.315,101001,0482 0001ZXPF,0215001.XEP,0453003.,0482 0019ZXP,562 0000 1009,3453HS4-010,01550114ZXU,454002,454001,015403.5,453.062,02450002X,3453LF1-010,65800003XXX,0154.100,850,0482 0009ZXB,851,852,853,855,856,0454005.,02450002H,129 002,0213 000P,129 001,01550020ZXA,0100 0020,0482 0020ZXB,314 000P,866 0000 1009,02450001X,0453001.,15403.5,3453LF1-020,0281 0007H,0482 0020ZXP,0453.062,154.750 T,860,862,865,03540010ZXGY,866,837 0000 0005,02450001H,01550020ZXU,0454004.,0520 0005 ZXGY,313 000P,824 0000 0005,125002,125001,0213 000 XEP,870,03540808ZXGY,874,875,876,877,PICO 259,0217.315 XEP,3453LF4-010,0154.750,0453007.,649 0000 3039,0285.125 XRP,127 002,0281 0005H,640,816 0000 0005,655 0000 0405,400,646,648,649,0482 0015ZXP,127 001,0482 0009ZXBF,0217.400 XEP,815 0000 0005,342 058,52100001009,830 0000 0005,0453004.,01550104ZXU,0482 0002ZXPF,652,653,0482 0005ZXB,655,0482 0010ZXPF,656,101002,658,101003,646 1200 7113,659,01550104ZXA,03540011ZXGY,451.1,03540901ZXGY,0453005.,342 048,660,824 0000 0205,429,0215020P,0482 0017ZXB,649 0000 1039,435,437,438,659 0000 0009,0482 0005ZXP,0451.062,440,441,443,202,203,445,254 121,446,688,447,448,449,208,209,646 1200 7123,154001. T,0482 0003ZXPF,0154.500,0453008.,824 20,451,452,453,0520 0001,354 101-GY,454,213,456,215,03540012ZXGY,458,216,459,217,218,453.1,453.2,03540809ZXGY,453.8,453.5,0520 0004 Z,453.4,460,3453LF3-010,461,0451.080,312 000,462,220,464,465,0482 0008ZXBF,466,224,467,225,468,469,254 101,229,800 0000 0105,0482 0017ZXP,560 0000 13 19,01000020Z,471,230,472,0101 0001,473,232,233,0356 0011Z,234,477,235,239,125 001,125 003,570 0000 0001,125 002,0445 0001,03540601ZXGY,154002. T,109 002,345_ISF,02200029MXP,0281 0001,109 001,481,482,0101 0002,242,485,0101 0003,0482 0016ZXBF,04533.15,245,0356 0010Z,0215020.XEP,01550004ZXA,102064,345 101-010,0482 0002ZXB,0482 0002ZXP,03540005ZXGY,803 01,251,494,253,254,0122 055Z-1,348 677,354 700,01550004ZXU,348 671,03540101ZXGY,0482 0019ZXPF,15401.5 T,03540906ZXGY,3453QS2-010,0216.050XEP,345 101-020,03540803ZXGY,262,102071,263,265,266,267,268,520 001,269,520 003,520 004,PICO 259-UL913,0482 0007ZXBF,0235006.XEP,0482 0004ZXPF,0218 000P,272,030,273,274,03540602ZXGY,275,154.8,262 000,278,0239 000P,279,505 000P,0453.630,154.1,0154007.,0482 0014ZXP,154.5,154.4,154004. T,155 100,154.2,3453QS8-010,01550014ZXA,340 313,0482 0014ZXB,281,282,01550120ZXU,340 312,285,286,155 004A,348 600,04611.25,0453.400,852 0000 1009,01550120ZXA,045306.3,0281 0008 H,1541.25,268 000,811 0000 0005,01500145HXB,01550014ZXU,0482 0017ZXBF,348 877,155 114A,0218.032 XEP,3453QS3-010,278 000,348 871,640 0000 1003,658 0000 1109,0482 0001ZXBF,03540004ZXGY,155 004U,220 000P,58300000005,831 0000 0005,0482 0006ZXBF,451.125,03540907ZXGY,0482 0005ZXPF,155 006A,0154008.,03540802ZXGY,155 114U,00300210M,155 006U,850 0000 1009,0254 0002Z,344 125,658 0000 4009,0482 0010ZXP,045402.5,01550109ZXU,03540905ZXGY,0154003.,0482 0010ZXB,3453LF8-010,01550006ZXU,00300210N,3453QS7-010,0254 0003Z,0232 000P,03540003ZXGY,0482 0002ZXBF,0482 0009ZXP,0154002.,348 800,0482 0009ZXPF,0154.080,0453.200,3453RF8-010,01550100Z,0359 0010Z,315 000P,03540603ZXGY,3453HS1-010,02810001H,520_W,332 000P,224 000P,66000001009,508 000P,0154005.,0477.500XEP,325 000P,155 009A,3453QS4-010,0359 0011Z,0482 0018ZXBF,0254 0001Z,453.315,851 0000 1009,155 009U,15401.6,286 377,15401.5,0482 0021ZXPF,45403.5,0154004.,01550109ZXA,0359 0012Z,653 0000 0405,0482 0008ZXPF,154.375 T,3453LF7-010,454.375,0216001.XEP,835 0000 0005,322 000P,03540805ZXGY,345 121,658 0000 3109,652 0000 0405,03540002ZXGY,266 000,0275030.,154L,02200019MXP,03540604ZXGY,045302.5,281010,03540904ZXGY,208 000EP,0482 0003ZXBF,453.75,45303.5,0216016.XEP,0482 0020ZXPF,0154001.,3453HS2-010,354 900,281007,154T,281008,281005,0482 0012ZXB,0482 0012ZXP,640 0000 1403,03540804ZXGY,51800001009,453.63,0482 0019ZXBF,0356 0012Z,45401.5,0154.062,834 0000 0005,01550006ZXA,0217015 XEP,453.125,344 400,015402.5,0218.125 XEP,0254 0204Z,344 405,230 000P,344 402,0482 0007ZXPF,344 401,0453.160,344 404,344 403,0482 0004ZXBF,0233 000P,0482 0018ZXP,0154.250,0482 0015ZXPF,265 000,354 000,209 000EP,801 0000 0005,453.08,640 0000 1503,0520 0101 Z,03540008ZXGY,0482 0018ZXB,0254 0205Z,810 0000 0005,571 0000 0001,
【选型】Littelfuse(力特)保险丝座选型指南
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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
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【技术】Littelfuse解析保险丝及其应用注意事项
保险丝作为过流保护器件,在电子行业得到普遍应用,存在感非常强,却又那么不起眼,只要不是全新的设计方案,只要没出问题,经验的沿用以至于很多硬件工程师对于保险丝的参数与选型不明所以。Littelfuse浅显易懂地讲述保险丝及其应用注意事项,供有需人士参考。
开关电源中,如何选用保险丝的电流?
一是看电路的最大持续工作电流,二是看工作环境温度,三是所选保险丝的认证情况,比如UL认证的保险丝折减率是75%。保险丝的额定电流=电路最大持续工作电流/(温度折减率*保险丝认证折减率),举个例子,电路的最大持续工作电流为2A,工作温度最大为80℃,对应保险丝的温度折减率为88%,UL认证,2A/(0.88*0.75)=3.03A,则所选保险丝的额定电流应大于3.03A。Littelfuse作为保护器件的大品牌,保险丝种类丰富,认证齐全,可以在平台搜索了解详情,有具体需要可以提选型帮助,保险丝不光只看电流的。
JTD Series Class J Fuses
型号- JTD2.25,0JTD200.X,0JTD045.TXR,0JTD012.T,0JTD035.T,JTD030,JTD150,0JTD050.T,0JTD01.6T,JTD035,JTD17.5,0JTD125.X,0JTD400.X,0JTD1.25T,0JTD04.5T,0JTD005.T,0JTD009.T,JTD045,0JTD001.T,0JTD020.T,JTD040,JTD02.5,JTD600,JTD,0JTD035.TXR,JTD.800,JTD200,0JTD01.5T,JTD02.8,JTD045R,0JTD015.T,JTD175,JTD450,JTD050,0JTD030.T,0JTD500.X,0JTD450.X,JTD060R,0JTD02.5T,0JTD03.2T,0JTD175.X,0JTD01.8T,0JTD004.T,0JTD060.TXR,0JTD008.T,JTD100,JTD060,0JTD250.X,0JTD080.V,JTD01.6,0JTD110.X,JTD01.5,JTD01.8,JTD500,JTD05.6,JTD225,0JTD02.8T,JTD035R,0JTD100.V,JTD070,0JTD225.X,JTD SERIES,JTD350,JTD110,0JTD010.T,JTD050R,0JTD090.V,0JTD05.6T,0JTD.800T,0JTD007.T,JTD080,0JTD045.T,JTD001,0JTD003.T,0JTD300.X,JTD007,0JTD060.T,JTD006,JTD009,JTD008,0JTD2.25T,JTD003,JTD04.5,JTD400,JTD002,JTD005,JTD004,JTD125,0JTD040.TXR,0JTD350.X,0JTD600.X,JTD090,JTD010,JTD012,JTD250,0JTD050.TXR,JTD040R,0JTD070.V,JTD015,0JTD150.X,JTD1.25,0JTD006.T,JTD020,0JTD17.5T,0JTD025.T,0JTD002.T,0JTD040.T,JTD03.2,JTD025,0JTD03.5T,JTD03.5,JTD300
【产品】紧凑型OMNI-BLOK®保险丝座254系列,配有增强型保险丝夹,独特设计可自动对准保险丝盖
254系列是Littelfuse公司推出的紧凑型OMNI-BLOK®保险丝座,与2AG保险丝搭配使用。254系列设计有焊接型端子、Q.C.端子或PCB板安装型端子可供选择,而针对PCB板安装又提供了正常环境下使用的镀锡黄铜端子或腐蚀性环境中使用的镀锡铍铜端子。此外,254系列保险丝座标配有增强型保险丝夹,这充分保证了器件稳定性和安全性,可用于保护电路、电池盒、车辆等领域。
【应用】力特PCB焊接的保险丝座及保险丝盖适用于工业控制电源,适配5x20mm的可更换保险丝
力特(Littelfuse)的64600001233是一款PCB焊接的保险丝座,可以通过保险丝盖,防止异物碰撞保险丝,可以搭配5 x20mm的可更换保险丝,广泛应用在工业控制电源回路,通信电源回路里。
218 Series 5×20 mm, Time-Lag Fuse Datasheet
型号- 0218XXXXMXEP,0218.032 XEP,0218.125 XEP,218,0218.100XEP,0218016. XEP,0218 000P,218 SERIES
Littelfuse 保险丝 ,规格书中维持电流ihold是什么意思?触发电流itrip是什么意思?请阐述详细电流先后保险丝的工作状况,请教专业
保险丝的Ihold 就是保持电流,也就是工作电流,一般标明的多少A,在该电流下工作,保险丝不会动作。Itrip就是触发电流,熔断电流, 一般为保持电流的两倍,达到该电流,保险丝会快速动作。Ihold和Itrip之间的电流,会引起保险丝发热,如果散热条件差,引起热量累计,也可能导致保险丝动作。Ihold和Itrip的值和温度有关系,温度越高,Ihold越小。
【经验】一文教你如何选择合适额定电流的保险丝
保险丝是开关电源的最基本安规器件,应用的正确与否直接关系到整个系统的安全,尤其是新产品的开发,对其核心的参数选择要有深刻的认识,以免在产品的应用过程中出现差错,导致产品安全问题。本文就实际应用案例来分析Littelfuse保险丝如何选择合适的额定电流参数。保险丝的额定电流是选用保险丝是第一步需要考虑的参数,一般请况下,额定电流参数的计算公式为:In=IR/(Frf*Tdf)
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