力特保险丝在24Vdc和110Vdc蓄电池开关电源电路板中的PCB设计经验分享

2018-11-19 世强
保险丝,46215000000,0463020ER,Littelfuse 保险丝,46215000000,0463020ER,Littelfuse 保险丝,46215000000,0463020ER,Littelfuse 保险丝,46215000000,0463020ER,Littelfuse

一、应用背景

机车牵引机箱开关电源一般采用蓄电池电压作为电源的输入电压,在机车上蓄电池的电压等级一般为24Vdc或者110Vdc,为了防止遇到输出负载出现故障短路的情况,一般需要增加保险丝进行电源的短路保护措施,因此在24Vdc和110Vdc蓄电池系统中,需要分别选型不同电压等级的保险丝进行短路保护。在进行保险丝的选型后,需要进行保险丝保护电路原理图、封装、PCB和布线的设计,那怎么设计不同电压等级下的保险丝电路才能发挥保险丝的最优性能呢,接下来根据设计项目设计经验分享给大家。


在机车牵引机箱开关电源电路板设计中,如图1所示,蓄电池电压作为电源板的输入电压,经过保险丝短路保护和EMC电磁干扰保护,再经过DC-DC电源转换输出直流电压,然后经过LC滤波电路滤波后稳压输出,供其他电路板供电使用。


图1机车牵引机箱开关电源电路板工作示意图


二、保险丝选型及应用介绍

在机车上蓄电池的电压等级一般为24Vdc或者110Vdc,因此针对机车用电源板设计的保险丝选型,需要选用适用于24Vdc和110Vdc蓄电池电压系统的两款保险丝。


在24Vdc蓄电池系统中,输入蓄电池电压额定值为24Vdc,输入电压变化范围为:14.4Vdc~36Vdc,输入最大功率为300W,工作温度范围为:-25℃~85℃,选型保险丝的封装尺寸不应过大,可焊接在PCB板上,应该选择的保险丝的电流为是20A。保险丝采用LITTELFUSE0463020ER保险丝实现短路保护,此款保险丝额定保护电流为20A,且工作电压大于36V,符合24Vdc蓄电池系统要求,为贴片封装,体积小,适合作为短路保护使用。


在110Vdc蓄电池系统中,输入蓄电池电压额定值为110Vdc,输入电压变化范围为:66Vdc~154Vdc,输入最大功率为300W,工作温度范围为:-25℃~85℃,选型保险丝的封装尺寸不应过大,可焊接在PCB板上,应该选择的保险丝的电流为是5A。保险丝采用Littelfuse的46215000000保险丝实现短路保护,此款保险丝额定保护电流为5A,且工作电压大于154V,符合110Vdc蓄电池系统要求,为贴片封装,体积小,适合作为短路保护使用。

图2 Littelfuse保险丝46215000000和0463020ER实物图


二、机车牵引机箱开关电源电路板原理图及保险丝封装及PCB设计


在机车牵引机箱开关电源电路板短路保护原理图如图3所示,V+为蓄电池输入电压的正极,V-为蓄电池输入电压的负极,F1为保险丝,其他器件为EMC保护器件。当电源板输出电路有短路故障发生时,保险丝熔断,保护后级电路不被烧毁,从而保护了电源设备,为电源系统的稳定运行带来保护作用,也为机车安全运行带来了必要的保证。

图3 开关电源电路板短路保护原理图和PCB


由于在机车上蓄电池的电压等级一般为24Vdc或者110Vdc,因此选用了两款保险丝46215000000和0463020ER分别作为不同电压等级下的电源保护使用。但两款保险丝的尺寸不是完全一致大小的,为了节省成本,减少产品开发周期,提高设计效率,需要设计一款PCB封装,能够同时满足焊接这两款保险丝的要求,接下来讲一下设计这两款保险丝封装和布线的具体步骤。


1)设计保险丝PCB封装焊盘宽度大小,封装的焊盘宽度应该选取两款保险丝尺寸较大者,查看手册可以得知两者焊盘宽度较大为6.68mm,因此保险丝PCB封装焊盘宽度大小选为6.68mm;


2)确定保险丝PCB封装焊盘间距,封装的焊盘间距应该选取两款保险丝尺寸较小者,查看手册可以得知两者焊盘间距较小为4.5mm,因此保险丝PCB封装焊盘间距选为4.5mm;


设计保险丝PCB封装长度大小,封装的焊盘长度应该完全能够焊接两款保险丝,因此保险丝PCB封装长度选取两款保险丝尺寸较大者,查看手册可以得知两者封装长度较大为15.7mm,因此保险丝PCB封装长度大小选为15.7mm。

图4 保险丝尺寸封装图


在机车牵引机箱开关电源电路板短路保护中,选用了两款保险丝46215000000和0463020ER分别作为24Vdc和110Vdc蓄电池电压等级下的电源保护使用,并设计了一款PCB封装,能够同时满足焊接这两款保险丝的要求,实际设计的PCB如图5所示,其设计优势主要有:


1)Littelfuse保险丝性能可靠,封装尺寸小,满足项目设计要求;


2)两款保险丝的封装PCB可以设计一致,节省成本,减少产品开发周期,提高设计效率;


3)采用贴片封装,PCB布线设计方便,容易满足电气要求,焊接操作简单。

图5 开关电源电路板短路保护PCB实物图


授权代理商:世强先进(深圳)科技股份有限公司
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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. 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选型指南  -  LITTELFUSE  - 2018年11月 PDF 中文 下载

Littelfuse(力特)应用于乘用车的保险丝选型指南

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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 SERIES,0498125._,0298125.ZXEH-UL,20EV100.ZXBDM,156.5611.XXX1,3298175.H,0498XXX.MXT-CN,3298350._,156.5677.540_,SHEVXXX.ZXBD,0498200._,0327003._,0317XXX.M,3998600._,157.5700.5801,0337XXX.PX2S,157.5917.5801,157.5701.6421,156.5677.550_,0297XXX.WXNV-CN,157.5701.6301,0299060._,0999080._,0297005._,153.2502,153.0010.XXX2,157.5916.6121,0695020.PXPS,0498080._,156.5610.580_,0298350._,0495900.Z,155.0892.5751,3998150._,142.7010.6202,0495900.X,142.5631.5302,157.5700.5631,153.XXXX.6502,0898150._,3298900._,0298500._,0299XXX.TXN,153.7000.XXX2,153.XXXX.540_,3298900.Z,4998125.M_,157.5701.6331,157.5917.6101,156.5610.530_,0298150._,142.5395.6102,142.5395.6222,0298100.ZXEH-UL,3298125.Z,0HEVXXX.ZXPY,0695060.PXPS-HT,4998XXX.M-M6,3298125._,0327025._,157.5700.5501,0HEV030.XXX,0998350._,0495XXX.ZXA,4998080.M_,157.5701.6201,157.5917.6231,3298125.H,157.5917.6351,156.5677.560_,3298080.H,0495025_,157.5701.5351,3298080._,0898500._,3298XXX.Z,3298080.Z,155.0892.6101,0337003._,0HEV050.XXX,0287020._,3298500.ZXSTA,3298XXX.H,142.0020.XXXX,02400112P,0297010._,0695040.PXPS-HT,3298200.H,157.5917.6121,156.5611.6111,0HEVXXX.ZXISO2,153.XXXX.530_,157.5701.6351,0299070._,157.5701.XXX1,0298275.ZXEH-LT,157.5701.6231,142.5395.6202,0HEV010.XXX,155.0892.6251,0287010._,157.5916.5501,SHEV060.ZXBD,153.XXXX.6402,3298200._,0HEVXXX.ZXC,3298200.Z,4998200.M_,142.5631.6152,02400111P,0999040._,153.5631.XXX2,157.5701.6101,4998XXX.M-NH,153.5631.XXX1,157.5917.6251,0695XXX.PXP,031707.5M,20EV080.ZXBDM,156.5611.6121,0498100._,0899060.Z,882-853,882-854,155.0892.6121,157.5916.5631,3998070._,157.5700.6401,142.5631.6122,0998XXX.UX-2M8,0898175._,157.5701.6131,153.1602,157.5701.6251,0999050._,153.XXXX.560_,0998XXX.UX-2M6,155.0892.XXX1,3298100._,0327900._,0298XXX.UX1M8,0299080._,3298100.Z,0998450._,0498XXX.MXTM6-CN,0297002._,0895025_,157.5917.6151,156.5677.580_,0297025._,0891030._,142.5395.6252,3998225._,157.5701.6121,156.5610.550_,157.5917.6161,3298100.H,157.5917.6281,02400113P,10EVXXX.ZXPCBL,155.0892.6301,0998XXX.UX-NH,0298XXX.UXT,157.5700.6501,0337900._,142.7010.6152,0298040._,157.5701.6151,0287001._,3998300._,142.5631.6102,157.5701.6271,0498XXX.M-CN,0327010._,032707.5_,3998400._,0998XXX.UX-1M8,0498XXX.MXM6-CN,153.XXXX.550_,156.5611.6151,0997004_,0695025.PXP,0998XXX.UX-1M6,142.5395.6122,153.7010.XXX2,157.5917.6171,029707.5_,0287035._,3998XXX.ZXM10,157.5700.5401,294C SERIES,0327XXX.LXS,02400103_,0997005_,033707.5_,157.5701.6141,156.5610.540_,3298600.ZXSTA,293 SERIES,028707.5_,0891XXX.U,0898250._,142.5395.XXXX,0891XXX.H,155.0892.6201,SHEV150.ZXBD,02400115P,142.5631.XXXX,0317010.M,4998150.M_,0287002._,0287025._,157.5701.6171,32980001ZXM8,157.5917.6501,0695XXX.PXP-HT,0298060._,4998060.M_,0997002_,156.5610.611_,0891020._,0495040_,142.7010.5802,3998900._,20EV125.ZXBDM,157.5916.5801,0317900.M,153.XXXX.6222,157.5700.5351,0HEVXXX.ZXP2Y,02400106P,153.XXXX.6102,02400118P,876-199,157.5700.6201,3998125._,02400105Z,0298250.ZXEH-LT,157.5701.6161,0895XXX.T,0298300._,0895XXX.U,0695025.PXPS,153.XXXX.610_,0998100._,0899040.Z,156.5610.612_,0997003_,0997015_,SHEV100.ZXBD,0317015.M,0297030._,142.5631.5802,902-192,0287003._,0HEVXXX.ZXPCB2,0297XXX.WXT,3298400._,0297XXX.WXNV,0891XXX.NXWS,156.5610.625_,0899030.Z,0899XXX.Z,0299025._,3998200._,142.7010.5702,0495050_,0HEVXXX.ZXPCBL,153.XXXX.6122,0317005.M,2938 SERIES,0895XXX.Z,157.5700.6301,02400108P,157.5700.6421,0495XXX.UXA,3998080._,10EV040.XXX,3298400.ZXSTA,153.XXXX.612_,0898350._,0327020._,3298060.H,0997025_,0297XXX.H,3298400.H,0888300._,3298060.Z,0297XXX.L,SHEV070.ZXBD,05980020Z,153.XXXX.6252,0695050.PXPS,0298XXX.ZXEH-UL,02400107P,0297XXX.U,153.0020.XXX2,0287004._,0327030._,0298XXX.ZXH,0997010_,0298XXX.UXP-1M8,0298XXX.UXP-1M6,0498XXX.MXTM6,0498175._,153.5395.XXXX,157.

选型指南  -  LITTELFUSE  - 2022/9/9 PDF 英文 下载

392 Series TE5 Time-Lag Fuse Fuse Datasheet

型号- 392XXXX0000,392 SERIES,392

数据手册  -  LITTELFUSE  - 09/13/24 PDF 英文 下载

【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

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

【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。

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

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

Littelfuse(力特)高速半导体保险丝选型指南(英文)

描述- POWR-SPEED high-speed fuses are optimized for performance and efficiency to better protect your critical power semiconductors against short circuits. These certified fuses are reliable and fast-acting to help extend the life of your equipment.

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

选型指南  -  LITTELFUSE  - Rev: 8-C-050223  - 050223 PDF 英文 下载

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

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