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0273.700

更新时间: 2024-11-22 14:57:03
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力特 - LITTELFUSE /
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功能与特色:

0273.700 数据手册

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Axial Lead & Cartridge Fuses  
MICRO™ > Very Fast-Acting Fuse > 272/273/274/278/279 Series  
272/273/274/278/279 Series, MICROVery Fast-Acting Fuse  
QPL  
Description  
Developed originally for the U.S. Space Program, MICRO™  
fuse provides reliability in a compact design. The MICRO™  
fuse is available in plug–in or radial lead styles and a  
complete range of ampere ratings from 0.002A to 5A to  
suit a wide variety of design needs.  
Features  
• Military grade available  
• High breaking capacity  
• Plug-in with short or long  
leads option  
• Recognized to UL/CSA/  
NMX 248-1 and UL/CSA/  
NMX 248-14  
• Clear cover option to view  
fuse element status  
• Available from very low  
ampere of 0.002A to 5A  
Applications  
Agency Approvals  
• Printed circuit boards  
and similar equipment  
• Electronic components  
Agency  
Agency File Number  
Ampere Range  
E10480  
29862  
0.002A - 5A  
Electrical Characteristics  
0.002A - 5A  
0.002A - 5A  
% of Ampere Rating  
Ampere Rating  
0.002 – 5  
OpeningTime  
QPL-23419  
QPL  
100%  
4 Hours, Min.  
5 Seconds, Max.  
2 Seconds, Max.  
0.002 – 0.3  
0.4 - 5  
200%  
Electrical Characteristics  
Agency Approvals  
Ampere  
Rating  
(A)  
Amp Code  
(for all above  
series)  
Max  
Voltage  
Rating (V)  
Nominal Cold  
Resistance  
(Ohms)  
Interrupting  
Rating  
Nominal Melting  
I2t (A2 sec)  
QPL  
0.002  
0.005  
0.010  
0.015  
0.031  
0.050  
0.062  
0.100  
0.125  
0.200  
0.250  
0.300  
0.400  
0.500  
0.600  
0.700  
0.750  
0.800  
1.00  
0.002  
0.005  
0.010  
0.015  
0.031  
0.050  
0.062  
0.100  
0.125  
0.200  
0.250  
0.300  
0.400  
0.500  
0.600  
0.700  
0.750  
0.800  
001.0  
01.5  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
125  
2200  
280  
80.0  
44.0  
16.0  
3.52  
2.55  
1.38  
1.0  
0.00000000845  
0.0000000766  
0.000000462  
0.00000123  
0.00000810  
0.0000666  
0.000115  
0.000385  
0.000691  
0.00409  
0.00640  
0.00945  
0.0251  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
2.30  
1.75  
1.25  
10,000A@125VAC/VDC  
0.227  
0.167  
0.430  
0.324  
0.293  
0.271  
0.0880  
0.0578  
0.0425  
0.0275  
0.0202  
0.0156  
0.0716  
0.0411  
0.0710  
0.0563  
0.113  
0.0648  
0.160  
0.300  
01.5  
2.00  
3.00  
*4.00  
*5.00  
002.0  
003.0  
004.0  
005.0  
0.759  
1.38  
2.21  
* The fuses of 4A and 5A for 272 and 278 Series are obsolete.  
© 2019 Littelfuse, Inc.  
Specifications are subject to change without notice. Application testing is strongly recommended.  
Revised: 11/14/19  

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