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R251001

更新时间: 2024-10-28 22:24:47
品牌 Logo 应用领域
力特 - LITTELFUSE /
页数 文件大小 规格书
1页 93K
描述
Axial Lead and Cartridge Fuses - Subminiature

R251001 技术参数

生命周期:Obsolete包装说明:AXIAL LEADED
Reach Compliance Code:unknown风险等级:5.37
其他特性:RATED BREAKING CAPACITY AT 125 VDC: 300 A, PRE ARCING TIME: OPEN WITHIN 1 SEC AT 200% RATED CURRENT熔断特性:VERY FAST
主体高度:7.112 mm主体长度或直径:2.413 mm
电路保护类型:ELECTRIC FUSE焦耳积分标称:
安装特点:THROUGH HOLE最高工作温度:125 °C
最低工作温度:-55 °C额定分断能力:50 A
额定电流:1 A额定电压:125 V
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断开时间或延迟:1 s

R251001 数据手册

  
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Previous  
Axial Lead and Cartridge Fuses  
Subminiature  
®
®
QPL  
®
PICO II Very Fast-Acting Fuse 251/253  
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%  
1/1615  
1/167  
10  
4 hours, Minimum  
1 second, Maximum  
3 seconds, Maximum  
10 seconds, Maximum  
200%  
1215  
AGENCY APPROVALS: Recognized under the Components  
Program of Underwriters Laboratories and Certified by CSA.  
Approved by METI from 1 through 5 amperes.  
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.  
REFERENCE TO MIL SPEC: Available in FM10 on QPL for  
MIL-PRF-23419. To order, change 251 to 253 as shown below.  
INTERRUPTING RATINGS:  
38.1  
38.1  
(1.5")  
7.11 (.280")  
REF.  
(1.5")  
2.41 (.095")  
DIA. REF.  
F
1 A  
L
300 amperes at rated voltage VDC.  
0.64 (.025")  
DIA.  
50 amperes at rated voltage VAC.  
EPOXY COATING  
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).  
1
16  
NOTE: .025" diameter for / 10A, .032" diameter for 12 15A.  
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.  
PHYSICAL SPECIFICATIONS:  
Average Time Current Curves  
Materials: Encapsulated, Epoxy-Coated Body; Solder Coated Copper  
Wire Leads.  
100  
Flammability Rating: UL 94V0  
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.  
10  
1
PATENTED  
ORDERING INFORMATION:  
Std. Type  
Catalog  
Number  
Mil. Type  
Catalog  
Number  
Nominal  
Resistance  
Cold Ohms  
Nominal  
2
Ampere Voltage  
Melting I t  
0.1  
2
Rating  
Rating  
A Sec.  
R251.062  
R251.125  
R251.250  
R251.375  
R251.500  
R251.750  
R251 001  
R251 01.5  
R251 002  
R251 02.5  
R251 003  
R251 03.5  
R251 004  
R251 005  
R251 007  
R251 010  
R251 012  
R251 015  
R253.062  
R253.125  
R253.250  
R253.375  
R253.500  
R253.750  
R253 001  
R253 01.5  
R253 002  
1/16  
1/8  
1/4  
3/8  
1/2  
3/4  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
32  
7.0  
0.000113  
0.00174  
0.0116  
0.0296  
0.0598  
0.153  
0.256  
0.587  
0.405  
0.721  
1.19  
1.70  
0.665  
0.395  
0.01  
0.280  
0.175  
1
0.128  
1
2
1 /  
0.0823  
0.0473  
0.0360  
0.0290  
0.0240  
0.0204  
0.0155  
0.0105  
0.00705  
0.0055  
0.00446  
2
1
2
2 /  
0.001  
R253 003  
3
1
2
3 /  
1.58  
0.05 0.1  
1
10  
100  
1000  
R253 004  
R253 005  
R253 007  
R253 010  
4
5
2.45  
CURRENT IN AMPERES  
4.14  
7
10.4  
10  
12  
15  
25.5  
45.2  
R253 015  
32  
68.8  
Note: Higher Ampere Ratings Available.  
Contact Technical Assistance for Details  
280  
www. littelfuse. com  

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