【选型】国产快熔保险丝用于网络交换工控机48VDC电源输入过流防护设计，分断电流能力达100A

时间： 2021-12-21 来源：世强

技术问答

网络交换工控机电源供电一般为24VDC、48VDC，高温一般超过70℃，低于85℃，为避免电源输入因负载短路异常造成燃烧风险，建议在电源输入母线上加入一颗快熔保险丝做过流保护设计，其电流选择一般与负载功率相关，一般为6A左右，市面上一般选择125VDC/10A的快熔保险丝设计，满足高温70℃降额下（10%降额，70℃温度下保险丝额定工作电流为9A），仍有1.5倍过流防护能力。

针对如上的设计需求，推荐选择电安科技（DA TECHNOLOGY）方形保险丝 SF301A010，2410封装，最大额定工作电压125VDC，额定工作电流10A，高温70℃条件下，降额不足10%，分断电流能力高达100A@125VDC，工作温度范围-55℃~125℃，典型电性参数及温度降额曲线参考如下图1所示。

图1：电安科技（DA TECHNOLOGY）快熔保险丝SF301A010典型电性参数及温度降额曲线示意图

推荐理由如下：

1、常温25℃条件下的正常冷却阻值为0.006Ω，自损耗很小；

2、市面上有成熟应用，产品性能得到验证；

3、具有良好的供货交期，可以快速支持样品和量产服务。

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电安科技产品及应用介绍

描述- 电安科技产品及应用介绍

型号- AZ5B25-01F,5.0SMD,SMBJ,MF551,SLVU2.8-4,CQ06PF,MF551A050X,SP1003-01,SLVU2.8-8,SD05-36,TPAU10L-3,TPAU10L-2,TPAU10L-1,CA501,SD05-36C,SF331A040,RCLAMP7538,SMAJ,F0603FA,CC12H,MF551A063X,CQ12LH,SF331,SMF,SF332,SP0502BAHTG,10KPA,TPA323HL,SEF,CQ12LV,AF2 2410,ABC-V,SP3012,F0402 FA,ESD7104,SF331A030,ABC,BP3610A50,ESD8011-D,SP40XX-C,SET,ABE,SMDJ,SF331A025,NSPM2251,SESD1004Q4,BP,FLU,ABP,12KP,SM24CANA-HTG,12CF,SLVU2.8-4BTG,F1206SB,5KP,3216FF,ASM,SF331A020,CC221,TPA23C,TPA323H,5.0SMDJ,BP3610A60,SF331A015,ESD8451,SMCJ,TPA323H-C,UCLAMP3381,SP3030,TM10-621,AZ3028-01S,AZ5A45-01F,SP3022-01ETG,1KSMB,ESD7004,429,AZ3028-04,F1206 HB,ADA,F1206 HA,TF101,TF102,BP3610A30,ESD9XXXST5G-D,TPA23,TPA3810-8L,SPF,MDA,SP1007-01,CQ06LF,MDA-V,TPA1006,SM6S,SF331A080,TPA5235U,TPA323,435,6125FA,314,CA422,437,CC204,438,CC203,CC202,CA421,CC201,8KP,TF111,TF112,BP3610A40,TM10-175,CQ12PF,SRV05-4,TPA1006L1,RCLAMP0524,440,AZ5325-01F,443,324,CA435,325,326,CA433,CA434,AZ5425-04F,CA431,CC213,CA432,CC212,606,CC211,F1206FA,6125TD,TPA0603L,TPA0603G,TM10-320,AZ4007-02,MF551A040X,AZ5015-01F,SM8T,SF331A060,451,452,453,SM8S,TPASRV05-4,SLD8S,454,TPA1006G,TPA23C-24,456,SF331A100,TPA1006H,458,216,SLVU2.8-8BTG,TPA2231H,MF501,BP3610A20,S505,TPAU10L,S501,SP3022-01WTG,3216TD,TPA1006L,SF302,SF303,APA,SF301,466,SF304,501,ESD5581-D,TPA0603,TM10-820,504,505,TPA1255,0603FA,SF331A050,06CF

商品及供应商介绍 - 电安科技 PDF 中文下载

电安科技FUSE保险丝选型表

电安科技提供了FUSE保险丝系列产品，种类齐全。产品可用在汽车电子、工业，通讯、新能源等领域。

产品型号	品类	Voltage Rating(V)	Current Rating(A)	IR(A)	Fast/Slow Acting	AECQ Qualification	Remark	Package
CC201A.250	陶瓷贴片保险丝	72VDC	0.25A	50A@72V	Fast	AEC-Q200	/	1206

选型表 - 电安科技立即选型

Square Surface Mount Fuse SF335L

型号- SF335A040L,SF335A030L,SF335A070L,SF335A060L,SF335A050L,SF335L

数据手册 - 电安科技 - Rev: B - 2024/1/17 PDF 英文下载

Square Surface Mount Fuse SF302

型号- SF302A.800,SF302A03.5,SF302A.700,SF302A01.6,SF302A02.5,SF302A06.3,SF302A07.5,SF302A030,SF302A.400,SF302A.300,SF302A.600,SF302A01.5,SF302A.500,SF302A016,SF302A015,SF302A1.25,SF302A012,SF302A.250,SF302A010,SF302A018,SF302A.315,SF302A020,SF302A.750,SF302A.375,SF302A.630,SF302,SF302A006,SF302A005,SF302A004,SF302A003,SF302A025,SF302A002,SF302A001,SF302A3.15,SF302A008,SF302A007

数据手册 - 电安科技 - Rev: D - 2023/3/9 PDF 英文下载

Square Surface Mount Fuse SF303

型号- SF303A.250,SF303A.150,SF303A1.25,SF303A.800,SF303A03.5,SF303A06.3,SF303A.500,SF303A01.5,SF303A.125,SF303A.400,SF303A01.6,SF303A02.5,SF303A.700,SF303A.600,SF303A.100,SF303A3.15,SF303A.300,SF303A.200,SF303A003,SF303A002,SF303A005,SF303A004,SF303A.160,SF303A001,SF303A007,SF303A006,SF303,SF303A.315,SF303A.375,SF303A.630,SF303A.750

数据手册 - 电安科技 - Rev: D - 2023/3/9 PDF 英文下载

SF334E Square Surface Mount Fuse

型号- SF334A.630E,SF334E,SF334A07.5E,SF334A001E,SF334A003E,SF334A025E,SF334A005E,SF334A.500E,SF334A015E,SF334A03.5E,SF334A006E,SF334A.750E,SF334A008E,SF334A010E,SF334A.800E,SF334A020E,SF334A.600E,SF334A002E,SF334A004E,SF334A050E,SF334A060E,SF334A030E,SF334A02.5E,SF334A06.3E,SF334A040E

数据手册 - 电安科技 - Rev:C - 2023/12/12 PDF 英文下载

电安科技（DA TECHNOLOGY）方形贴片保险丝选型指南

目录- Square Surface Mount Fuse

型号- SF301A3.15,SF304A.062,SF303A2.50,SF302A.600,SF304A003,SF304A002,SF301A020,SF304A001,SF304A007,SF304A006,SF303A.600,SF304A005,SF303A.200,SF304A.050,SF301A.050,SF301A.200,SF304A.200,SF304A.600,SF303A.315,SF301A.600,SF302A03.5,SF301A008,SF303A1.25,SF302A07.5,SF301A001,SF304A3.15,SF301A003,SF301A002,SF301A005,SF301A004,SF301A007,SF301A006,SF302A.500,SF304A.315,SF302A1.25,SF301A.375,SF303A.500,SF303A.100,SF303A3.15,SF303A003,SF303A002,SF303A005,SF303A004,SF303A001,SF301A012,SF304A.150,SF301A.150,SF302A.750,SF303A007,SF301A015,SF302A.630,SF303A006,SF304A.300,SF301A.300,SF304A.700,SF301A010,SF304A01.5,SF301A.700,SF301A01.5,SF302A.800,SF303A.250,SF302A02.5,SF302A06.3,SF301A.080,SF301A.750,SF301A.630,SF304A.375,SF301A1.25,SF303A.800,SF303A06.3,SF303A.400,SF303A.080,SF302A020,SF301A.250,SF304A.250,SF304A.125,SF304A.400,SF301A.125,SF301A.400,SF304A.800,SF304A02.5,SF304A06.3,SF301A02.5,SF301A.800,SF301A06.3,SF303A.630,SF303A.750,SF302A.700,SF304A.080,SF301A.062,SF302A01.5,SF304A.630,SF302A015,SF304A.750,SF303A3.50,SF302A012,SF302A010,SF303A.700,SF303A.300,SF303A1.50,SF304A1.25,SF302,SF302A006,SF302A005,SF303,SF302A004,SF304A.100,SF301,SF301A.500,SF302A003,SF302A002,SF304A03.5,SF302A001,SF302A3.15,SF304,SF304A.500,SF301A.100,SF301A07.5,SF303A.375,SF302A008,SF301A03.5,SF302A007

选型指南 - 电安科技 - Rev: B - 2019/10/15 PDF 英文下载

Square Surface Mount Fuse SF308

型号- SF308A.050,SF308A.160,SF308A001,SF308A.080,SF308A.500,SF308,SF308A.100,SF309,SF308A.250

数据手册 - 电安科技 - Rev: A - 2023/9/8 PDF 英文下载

SF331 Square Surface Mount Fuse

型号- SF331A008,SF331A006,SF331A015,SF331A025,SF331,SF331A060,SF331A070,SF331A080,SF331A100,SF331A010,SF331A020,SF331A030,SF331A040,SF331A050

数据手册 - 电安科技 - Rev: B - 2022/11/18 PDF 英文下载

Square Surface Mount Fuse SF302E

型号- SF302A018E,SF302A.315E,SF302A008E,SF302A.800E,SF302A1.25E,SF302A016E,SF302A.600E,SF302A006E,SF302A01.6E,SF302A02.5E,SF302A06.3E,SF302E,SF302A.750E,SF302A.300E,SF302A004E,SF302A012E,SF302A002E,SF302A3.15E,SF302A010E,SF302A030E,SF302A020E,SF302A.700E,SF302A007E,SF302A.500E,SF302A005E,SF302A03.5E,SF302A01.5E,SF302A07.5E,SF302A.250E,SF302A.400E,SF302A.630E,SF302A003E,SF302A025E,SF302A015E,SF302A001E,SF302A.375E

数据手册 - 电安科技 - Rev: B - 2023/3/9 PDF 英文下载

SF301 Square Surface Mount Fuse

型号- SF301A008,SF301A001,SF301A3.15,SF301A003,SF301A002,SF301A005,SF301A004,SF301A007,SF301A006,SF301A.750,SF301A.630,SF301A1.25,SF301A.375,SF301A020,SF301A.315,SF301A012,SF301A.250,SF301A016,SF301A015,SF301A018,SF301A.200,SF301A.300,SF301A.400,SF301,SF301A.500,SF301A010,SF301A07.5,SF301A.600,SF301A01.6,SF301A02.5,SF301A.700,SF301A01.5,SF301A.800,SF301A06.3,SF301A03.5

数据手册 - 电安科技 - Rev: E - 2023/9/12 PDF 英文下载

Square Surface Mount Fuse SF331E

型号- SF331A080E,SF331A025E,SF331E,SF331A015E,SF331A006E,SF331A008E,SF331A070E,SF331A060E,SF331A050E,SF331A040E,SF331A030E,SF331A020E,SF331A010E,SF331A100E

数据手册 - 电安科技 - Rev: B - 2023/3/19 PDF 英文下载