【选型】替代并联保险丝方案的大电流小体积606系列管状保险丝用于20KW以内大功率产品输入防护，额定电流可高达63A

时间： 2020-05-21 来源：世强

技术问答

大功率产品输入浪涌防护方案中的保险丝一般采用多保险丝并联或者大体积的装配式保险丝来实现，可靠性和成本上不占优势，LITTELFUSE针对一应用，推出大电流小体积606系列管状保险丝产品。

以输入AC380V功率20KW的大功率商用空调为例，其原边输入电流可达40-50A，采用普通管状保险丝，需要多只并联才能满足，这就对保险丝内阻的一致性有着很高的要求，否则很难保证其可靠性。此时Littelfuse大电流小体积606系列管状保险丝产品就很适合此时的应用选型，与其他厂家保险丝对比的表格如图1所示。

图1 606系列管状保险丝与其他厂家参数对比示意图

由上图可以看出，606系列保险丝的选型优势如下：

1、额定电压500VAC，额定电流高达40A至63A，分断能力2000A，可适用于20KW以内单相和三相供电电流的过流保护，是并联保险丝的最佳替代方案；

2、带有集成防区引线的端盖，无需另外安装附件（保险丝座/保险丝盒），安全性高，成本低；

3、10mm*32mm紧凑本体尺寸，可以减少大功率设备的PCB布局空间，为其他保护器件预留空间；

4、工作温度范围从-55℃到125℃的宽工作温度范围，在极端环境温度下，提供更为可靠的防护保护；

综上所述，Littelfuse 606系列管状保险丝具有电流大、体积小、安全性高等优点，是大功率（20KW以内）产品设备输入电流防护的最佳选择。

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【产品】多种额定电压的管式或轴向引线式保险丝、2AG保险丝，符合UL248-14标准

Littelfuse的 208系列为350V快熔型保险丝设计有管式和轴向引线式型号。Littelfuse的 209系列（2AG）350V Slo-Blo®延时型保险丝分为管式和轴向引线式两类。Littelfuse的 220系列是具有多种额定电压可选的2AG特殊保险丝。

器件选型发布时间 : 2018-10-17

【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,

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Littelfuse（力特）应用于乘用车的保险丝选型指南

目录- AUTOMOTIVE FUSES Product introduction BLADE FUSES CARTRIDGE FUSES HIGH CURRENT FUSES SMD FUSES CABLE/PAL FUSES HIGH VOLTAGE FUSES Shunts/Diodes/Resistors Fuse General knowledge

型号- 0998150._,142.5631.6202,0695040.PXPS,0297015._,0895020_,0HEV040.XXX,0898300._,0HEVXXX.ZXPCB,157.5701.5401,10EVXXX.ZXPY,142.7010.XXXX,0337010._,0298150.ZXEH-LT,0898225._,0299040._,142.5395.6172,SHEV080.ZXBD,0888250._,157.5701.5631,0297004._,0297900._,0899025.Z,0999060._,157.5916.6101,283 SERIES,153.XXXX.580_,0898060._,156.5610.570_,10EV020.XXX,4998100.M_,0498060._,142.7010.6102,0317030.M,3298350.H,3998425._,0999070._,0895030_,0498XXX.MXM6,0888XXX.U-1M6,0888XXX.U-1M8,0498070._,156.5611.5301,157.5916.XXX1,3998500._,099707.5_,05980016Z-CN,0317020.M,0299XXX.ZXNV,4998030.M_,0327005._,3998250._,0997XXX.WXN,0297003._,3298XXX.ZXM10,142.5395.6152,153.1612,153.XXXX.570_,157.5916.6201,157.5916.5351,156.5610.560_,0891005._,0998500._,157.5701.6501,10EVXXX.ZXPCB,3998175._,142.7010.6122,0695015.PXPS,0287040._,0898400._,0327015._,0299XXX.ZXT,0298XXX.ZXEH,155.0892.5501,0298250._,153.3502,0899035.Z,0895040_,0299050._,0998175._,0298175._,3998160._,157.5916.6251,157.5916.6131,156.5677.530_,153.0000,10EVXXX.ZXBDP,0891XXX.NXS,0287030._,0HEV015.XXX,3298250.H,0298175.ZXEH-LT,0287XXX.U,4998XXX.M-1M6,157.5701.6401,20EV070.ZXBDM,0287XXX.H,156.5611.6101,0287XXX.L,3298250.Z,0998250._,0HEVXXX.ZXPCBL2,153.XXXX.620__,0888XXX.U-NH,0498XXX.MXT,10EVXXX.ZXISO,02400094,0895050_,02400120P,3298175.Z,05980015Z-CN,153.2512,294 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392 Series TE5 Time-Lag Fuse Fuse Datasheet

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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

选型指南 - LITTELFUSE PDF 英文下载

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。

技术问答发布时间 : 2019-12-12

【元件】LITTELFUSE推出行业首创超大电流SMD保险丝系列，提供150A和200A额定电流规格

LITTELFUSE近日宣布推出871系列超大电流SMD保险丝，这一创新系列是对881系列的补充，提供150A和200A保险丝额定电流，是对881系列125A最大额定电流的重大升级。871保险丝系列为电子设计人员提供单保险丝、表面安装解决方案，无需并联保险丝配置。

产品发布时间 : 2024-10-09

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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。

技术探讨发布时间 : 2022-08-31

【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。

新产品发布时间 : 2019-03-21

294C Series PAL Fuses – Rated 32 V DC Fuse Datasheet

型号- 294C,0294080._,0294060._,0294100._,0294050._,0294020._,294C SERIES,0294120._,0294XXX.MXJ-C

数据手册 - LITTELFUSE - 7/25/2024 PDF 英文下载

Fuse Holders-High Currrent: Bolt-down Fuse Holders-Fuse Holder for MEGA ® Style Fuse

型号- 02981001ZXT,0298907-040,0298907-030

数据手册 - LITTELFUSE - 2018/07/12 PDF 英文下载

【产品】2AG保险丝防电击安全保险丝座245系列，适用于保护电路、电池盒、车辆等

245系列是由Littelfuse公司推出的2AG保险丝防电击安全保险丝座，可配合225系列、229系列和2200029系列保险丝使用。其螺丝刀槽旋钮风格提供低轮廓安全设计，减少了电击的可能性，可用于保护电路、电池盒、车辆等方面。

新产品发布时间 : 2019-03-19

BLADE Fuse CARTRIDGE Fuse BOLT DOWN Fuse ZCASE Fuse MASTERFUSE Fuse Selection Chart

型号- 0299***.ZXT,3298***,0888***,4998***.MXISO,153.7011.***,142.5395****,0298***,0891***.NXWS,0695***.PXPS,0898***,0998***.UXISO,0297***.WXNV,0895***.Z,0878450,0899****.Z,0498***.MX1M6-IH,0698***,0998***,0999***.ZXN,153.5395.***,0299***,0327***.YXT2,0695040.PXP-HT,0287***.PXCN,0891***.NXS,0899****.ZXR,0297***.WXT,0498***,4998***,0298***.UXT,142.***,0287***.PXS,0598***,0297***.U,0695***.PXPS-HT,0495***,0891***.U,0327***,153.***.***,0997***.WXN,0695***.PXP,0297***.H,0298***.ZXEH-UL,3998***.ZXM10,0297***.L,0337***,3298***.ZXM10,0891***.H,0298***.***LT

物料清单 - LITTELFUSE - 2024/4/27 PDF 英文下载

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。

技术问答发布时间 : 2019-05-31

【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)

设计经验发布时间 : 2019-01-21