0253.750V [LITTELFUSE]
251/253 Series, PICO® II, Very Fast-Acting Fuse; 251/253系列， PICO® II ，速度非常快熔保险丝
| 型号： | 0253.750V |
| 厂家： | 
LITTELFUSE |
| 描述： | 251/253 Series, PICO® II, Very Fast-Acting Fuse |
| 文件： | 总4页 (文件大小：289K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 251/253 Series
PS
E
251/253 Series, PICO® II, Very Fast-Acting Fuse
TUV QPL
Description
The PICO® II Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Features
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temperature range
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range (62mA- 15A)
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rerating
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Applications
Agency Approvals
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Agency
Agency File Number
Ampere Range
62mA - 15A
62mA - 15A
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E10480
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LR 29862
PS
E
JET 1896-31007-1001
J50158379
1A - 5A
Electrical Characteristics for Series
500mA - 10A
62mA - 15A
TUV
% of Ampere
Ampere Rating
Rating
OpeningTime
FM10
QPL
100%
62mA - 15A
62mA - 7A
10A
4 Hours, Min.
1 Second, Max.
3 Seconds, Max.
10 Seconds, Max.
2009010207366577 –
500mA to 5A
500mA, 1A, 2A, 2.5A,
3A, 4A, 5A
200%
12 - 15A
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
500mA, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
275%
400%
1000%
300 msecs., Max.
30 msecs., Max.
4 msecs., Max.
© 2012 Littelfuse, Inc.
251/253 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
Revised: September 6, 2012
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 251/253 Series
Electrical Specifications by Item
Agency Approvals
Max
Nominal
Cold
Resistance
(Ohms)
Nom
Voltage
Drop
(V)
Ampere
Rating
(A)
Ordering Ordering
Number Number
Nominal
Melting
Amp
Code
Voltage Interrupting
PS
Rating
(V)
Rating
TUV
(Std.)
(Mil.)
I2t (A2 sec)
QPL
E
.062
.125
.250
.375
.500
.630
.750
1.00
1.25
1.50
2.00
2.50
3.00
3.50
4.00
5.00
7.00
10.0
12.0
15.0
.062 251.062 253.062
.125 251.125 253.125
.250 251.250 253.250
.375 251.375 253.375
.500 251.500 253.500
.630 251.630
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
32
7.000
1.700
0.665
0.395
0.280
0.205
0.175
0.128
0.100
0.0823
0.0473
0.0360
0.0290
0.0240
0.0204
0.0155
0.0105
0.00705
0.0055
0.00446
0.000113
0.00174
0.0116
0.0296
0.0598
0.094
0.153
0.256
0.390
0.587
0.405
0.721
1.19
1.58
2.45
4.14
10.4
25.5
45.2
68.8
1.4
0.285
0.24
0.215
0.2165
0.188
0.176
0.194
0.2
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
300 A @ rated
WPMUBHFꢀ%$
.750 251.750 253.750
x
x
x
x
001.
251001. 253001.
x
x
x
x
x
x
x
x
x
50 A @ rated
WPMUBHFꢀ"$
1.25 2511.25
01.5
25101.5 25301.5
0.21
x
x
x
x
x
x
x
x
x
x
x
For CCC 7A:
70 A @ rated
WPMUBHFꢀ"$
002. 251002. 253002.
02.5 25102.5
003. 251003. 253003.
03.5 25103.5
004. 251004. 253004.
005. 251005. 253005.
0.141
0.132
0.131
0.1205
0.114
0.11
0.102
0.1
0.0878
0.071
x
x
x
x
For CCC 10A:
100 A @ rated
WPMUBHFꢀ"$
x
x
x
x
x
x
007.
251007. 253007.
010. 251010. 253010.
012. 251012.
015. 251015. 253015.
32
x
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© 2012 Littelfuse, Inc.
251/253 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 251/253 Series
Temperature Rerating Curve
AverageTime Current Curves
100
10
1
0.1
Note:
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
0.01
Soldering Parameters
0.001
0.05 0.1
1
10
100
1000
Recommended Process Parameters:
CURRENT IN AMPERES
Wave Parameter
Preheat:
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Temperature Minimum:
Temperature Maximum:
PreheatTime:
Lead-Free Recommendation
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100° C
150° C
60-180 seconds
Solder PotTemperature:
Solder DwellTime:
260° C Maximum
2-5 seconds
Recommended Hand Soldering Parameters:
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HeatingTime: 5 seconds max.
Note:These devices are not recommended for IR or
Convection Reflow process
© 2012 Littelfuse, Inc.
251/253 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 251/253 Series
Product Characteristics
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Materials
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Condition I (100 G’s peak for 6
msecs.)
Solderability
Lead Pull Force
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Shock
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Vibration
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QPL for MIL-PRF-23419. To order, change
251 to 253
FusesTo MIL SPEC
Moisture Resistance
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and up to 260ºC, maximum
Resistance to Soldering
Heat
Flammability Rating
UL 94V–0
Part Numbering System
Dimensions
251 Series (RoHS Version) Markings
(T1 lead length)
0251 xxxx N R T1 L
62.7 (2.468")
52.4 (2.062")*
27.78
27.78
(1.094")
Series
251 = Standard type
(1.094")
7.11 (.280")
F
1 A
L
253 = Military type
2.80
(.11")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
Current Rating
Refer to Amp Code column of
Electrical Specifications Table
F
1 A
L
Wire Diameter:
0.64 (.025") for 0.62-10.0 amp,
0.81 (.032") for 12-15 amp
Quantity
251 Series (RoHS and Halogen-free Version) Markings
N = 5000
P = 2000
M = 1000
H = 100
(T1 lead length)
62.7 (2.468")
52.4 (2.062")*
27.78
(1.094")
27.78
(1.094")
7.11 (.280")
F
1 A
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
L
2.80
(.11")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
F
1 A
L
Wire Diameter:
0.64 (.025") for 0.62-10.0 amp,
0.81 (.032") for 12-15 amp
Lead Length
The default lead length for Ammo pack and
Loose pack is now T1 for 251 series, and
remains T3 for 253 series, therefore:
T1 = 52.4mm (2.062”), 251 series only*
Blank = 52.4mm (2.062”) for 251 series*
or 73mm (2.874”) for 253 series**
253 Series (RoHS Version) Markings
(T3 lead length)
83.31 (3.28")
73.0 (2.874")**
38.1
(1.5")
38.1
(1.5")
7.11 (.280")
F
1 A
L
2.61 (.103")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
Option Codes
L
= RoHS + HF
F
1 A
L
Wire Diameter:
0.64 (.025") for 0.62-10.0 amp,
0.81 (.032") for 15 amp
Packaging
Quantity &
Packaging Option
Packaging Specification
EIA 296
Packaging Code
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above in "Part Numbering System”
EIA 296
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/PUFTꢆꢀꢀꢀ
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© 2012 Littelfuse, Inc.
251/253 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.
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