Littelfuse 0251007.MRT1

Cross Number:

Item Description: FUSE BRD MNT 7A 125VAC/VDC AXIAL

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12,751 + $0.10920


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Littelfuse 0000
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Axial Lead & Cartridge Fuses
251/253 Series
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
PICO
®
ll > Very Fast-Acting > 251/253 Series
251/253 Series
Revised: September 6, 2012
251/253 Series, PICO
®
II, Very Fast-Acting Fuse
Description
The PICO
®
II Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Agency Approvals
Agency Agency File Number Ampere Range
E10480 62mA - 15A
LR 29862 62mA - 15A
PS
E
JET 1896-31007-1001 1A - 5A
TUV
J50158379 500mA - 10A
QP
L
FM10 62mA - 15A
2009010207366577 –
500mA to 5A
500mA, 1A, 2A, 2.5A,
3A, 4A, 5A
Features
Electrical Characteristics for Series
% of Ampere
Rating
Ampere Rating Opening Time
100% 62mA - 15A 4 Hours, Min.
20
0%
62mA - 7A 1 Second, Max.
10A 3 Seconds, Max.
12 - 15A 10 Seconds, Max.
275%
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
300 msecs., Max.
400%
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
30 msecs., Max.
1000%
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
4 msecs., Max.
Applications
PS
E
t 'MBUoQBOFMEJTQMBZ57
t -$%NPOJUPS
t -$%CBDLMJHIUJOWFSUFS
t 0GmDFNBDIJOFT
t 1PXFSTVQQMZ
t "VEJP7JEFPTZTUFN
t -JHIUJOHTZTUFN
t .FEJDBMFRVJQNFOU
4FDPOEBSZQSPUFDUJPOGPSTQBDFDPOTUSBJOFEBQQMJDBUJPOT
TUV
QP
L
t 7FSZGBTUBDUJOH
t 4NBMMTJ[F
t 8JEFDVSSFOUSBUJOH
range (62mA- 15A)
t 3P)4DPNQMJBOU
t )BMPHFOGSFFBWBJMBCMF
t 8JEFPQFSBUJOH
temperature range
t -PXUFNQFSBUVSF
rerating
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Axial Lead & Cartridge Fuses
251/253 Series
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
PICO
®
ll > Very Fast-Acting > 251/253 Series
Ampere
Rating
(A)
Amp
Code
Ordering
Number
(Std.)
Ordering
Number
(Mil.)
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Nom
Voltage
Drop
(V)
Agency Approvals
PS
E
TUV
QP
L
.062 .062 251.062 253.062 125
300 A @ rated
WPMUBHF%$
50 A @ rated
WPMUBHF"$
For CCC 7A:
70 A @ rated
WPMUBHF"$
For CCC 10A:
100 A @ rated
WPMUBHF"$
7.000 0.000113 1.4 x x x
.125 .125 251.125 253.125 125 1.700 0.00174 0.285 x x x
.250 .250 251.250 253.250 125 0.665 0.0116 0.24 x x x
.375 .375 251.375 253.375 125 0.395 0.0296 0.215 x x x
.500 .500 251.500 253.500 125 0.280 0.0598 0.2165 x x x x x
.630 .630 251.630 125 0.205 0.094 0.188 x x
.750 .750 251.750 253.750 125 0.175 0.153 0.176 x x x x
1.00 001. 251001. 253001. 125 0.128 0.256 0.194 x x x x x x
1.25 1.25 2511.25 125 0.100 0.390 0.2 x x x
1.50 01.5 25101.5 25301.5 125 0.0823 0.587 0.21 x x x x x
2.00 002. 251002. 253002. 125 0.0473 0.405 0.141 x x x x x x
2.50 02.5 25102.5 125 0.0360 0.721 0.132 x x x x x
3.00 003. 251003. 253003. 125 0.0290 1.19 0.131 x x x x x x
3.50 03.5 25103.5 125 0.0240 1.58 0.1205 x x x x
4.00 004. 251004. 253004. 125 0.0204 2.45 0.114 x x x x x x
5.00 005. 251005. 253005. 125 0.0155 4.14 0.11 x x x x x x
7.00 007. 251007. 253007. 125 0.0105 10.4 0.102 x x x x
10.0 010. 251010. 253010. 125 0.00705 25.5 0.1 x x x x
12.0 012. 251012. 32 0.0055 45.2 0.0878 x x
15.0 015. 251015. 253015. 32 0.00446 68.8 0.071 x x x
Electrical Specifications by Item
Note: )JHIFSBNQFSFSBUJOHTBSFBWBJMBCMF1MFBTFDPOUBDU-JUUFMGVTF5FDIOJDBM4VQQPSUPSZPVS-JUUFMGVTFQSPEVDUTSFQSFTFOUBUJWFGPSBTTJTUBODF
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Axial Lead & Cartridge Fuses
251/253 Series
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
PICO
®
ll > Very Fast-Acting > 251/253 Series
251/253 Series
Average Time Current Curves
Soldering Parameters
100
10
1
0.1
0.01
0.001
.062A
0.05 0.1 1 10 100 1000
.125A
.250A
.375A
.500A
.750A
.630A
1A
1.5A
2A
2.5A
3A
3.5A
4A
5A
7A
10A
12A
15A
TIME IN SECONDS
CURRENT IN AMPERES
1.25A
Wave Parameter Lead-Free Recommendation
Preheat:
%FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF
5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
Temperature Minimum:
100
° C
Temperature Maximum:
150
° C
Preheat Time: 60-180 seconds
Solder Pot Temperature:
260
° C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Hand Soldering Parameters:
4PMEFS*SPO5FNQFSBUVSF¡$¡$
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process
Recommended Process Parameters:
Note:
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
Temperature Rerating Curve
12NEXT

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