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R251004T1

更新时间： 2024-01-13 08:06:49
品牌 Logo 应用领域
力特 - LITTELFUSE 电路保护
页数 文件大小 规格书
1页 89K
描述
Electric Fuse, Very Fast Blow, 4A, 125VAC, 125VDC, 50A (IR), Inline/holder

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R251004T1 技术参数

生命周期：ObsoleteReach Compliance Code：unknown
风险等级：5.41其他特性：RATED BREAKING CAPACITY AT 125 VDC: 300 A
熔断特性：VERY FAST主体高度：7.11 mm
主体长度或直径：2.41 mm电路保护类型：ELECTRIC FUSE
焦耳积分标称：2 J安装特点：INLINE/HOLDER
最高工作温度：125 °C最低工作温度：-55 °C
包装方法：TAPE AND REEL物理尺寸：2.41mm x 7.11mm
额定分断能力：50 A额定电流：4 A
额定电压（交流）：125 V额定电压（直流）：125 V
参考标准：CSA; UL表面贴装：NO
端子形状：PIN WIRE

R251004T1 数据手册

  
AXIAL LEAD AND CARTRIDGE FUSES  
SUBMINIATURE  
PICO® II Very Fast-Acting Type Fuse  
®
®
QPL  
The PICO® II very fast-acting fuse is designed to meet an  
extensive array of performance characteristics in a space-  
saving subminiature package.  
ELECTRICAL CHARACTERISTICS:  
% of Ampere  
Rating  
Ampere  
Rating  
Opening  
Time  
100%  
1/16–15  
1/16–7  
10  
4 hours, Minimum  
1 second, Maximum  
3 seconds, Maximum  
10 seconds, Maximum  
200%  
12–15  
AGENCY APPROVALS: Recognized under the  
Components Program of Underwriters Laboratories and  
Certified by CSA. Approved by MITI from 1 through 5  
amperes.  
.280"  
REF.  
1.5"  
1.5"  
F
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.  
1 A  
L
.095" DIA. REF.  
REFERENCE TO MIL SPEC: Available in Military QPL  
type FM10, conforming to MIL-PRF-23419. To order,  
change 251 to 253 as shown below.  
.025" DIA.  
EPOXY COATING  
INTERRUPTING RATINGS:  
300 amperes at 125 VDC.  
50 amperes at 125 VAC.  
1
16  
NOTE: .025" diameter for / –10A, .032" diameter for 12 –15A.  
ENVIRONMENTAL SPECIFICATIONS:  
Operating Temperature: –55°C to 125°C.  
Shock: MIL-STD-202, Method 213, Test Condition I  
(100 G’s peak for 6 milliseconds).  
Vibration: MIL-STD-202, Method 201 (10–55 Hz);  
Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak).  
Moisture Resistance: MIL-STD-202, Method 106.  
Average Time Current Curves  
PHYSICAL SPECIFICATIONS:  
Materials: Encapsulated, Epoxy-Coated Body; Solder  
Coated Copper Wire Leads.  
Soldering Parameters:  
Wave Solder — 260°C, 10 seconds maximum.  
Solderability: MIL-STD-202, Method 208.  
Lead Pull Force: MIL-STD-202, Method 211, Test  
Condition A (will withstand a 7 lb. axial pull test).  
PACKAGING SPECIFICATIONS: Tape and Reel per EIA-  
296; T1: 2.062" (52.4mm) taped spacing; 5,000 per reel.  
Option: Radial Lead Version; 0.4" lead spacing; to order,  
change 251 to 252.  
100  
10  
PATENTED  
ORDERING INFORMATION:  
1
Std. Type  
Catalog  
Number  
Mil. Type  
Catalog  
Number  
Nominal  
Resistance  
Cold Ohms  
Nominal  
Melting I2t  
A2 Sec.  
Ampere Voltage  
Rating  
Rating  
R251.062  
R251.125  
R251.250  
R251.375  
R253.062  
R253.125  
R253.250  
R253.375  
1/16  
1/8  
1/4  
3/8  
125  
125  
125  
125  
7.0  
0.000113  
0.00174  
0.0116  
1.70  
0.665  
0.395  
0.1  
0.0296  
R251.500  
R251.750  
R251 001  
R253.500  
R253.750  
R253 001  
1/2  
3/4  
125  
125  
125  
125  
125  
125  
125  
125  
125  
0.280  
0.175  
0.128  
0.0823  
0.0473  
0.0360  
0.0290  
0.0240  
0.0204  
0.0155  
0.0105  
0.00705  
0.0055  
0.00446  
0.0598  
0.153  
0.256  
0.587  
0.405  
0.721  
1.19  
1.58  
2.45  
4.14  
10.4  
25.5  
45.2  
68.8  
1
1
0.01  
0.001  
2
R251 01.5 R253 01.5  
1 /  
R251 002  
R251 02.5  
R251 003  
R251 03.5  
R251 004  
R251 005  
R251 007  
R251 010  
R251 012  
R251 015  
R253 002  
R253 003  
R253 004  
R253 005  
R253 007  
R253 010  
2
1
2
2 /  
3
1
2
3 /  
4
5
7
10  
12  
15  
125  
125  
125  
32  
0.05 0.1  
1
10  
100  
1000  
CURRENT IN AMPERES  
R253 015  
32  
Note: Higher Ampere Ratings Available.  
Contact Technical Assistance for Details  
42  
1

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