0251012.MAT1 [LITTELFUSE]
Electric Fuse, Very Fast Blow, 12A, 32VAC, 32VDC, 50A (IR), Through Hole, HALOGEN FREE;
| 型号： | 0251012.MAT1 |
| 厂家： | 
LITTELFUSE |
| 描述： | Electric Fuse, Very Fast Blow, 12A, 32VAC, 32VDC, 50A (IR), Through Hole, HALOGEN FREE 电路保护 |
| 文件： | 总4页 (文件大小：804K) |
| 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 Fuse > 251/253 Series
PS
E
251/253 Series, PICO® II Very Fast-Acting Fuse
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
• Very fast-acting
• Small size
• Wide current rating range
(0.062A- 15A)
• Halogen-free available
• Wide operating
temperature range
• Low temperature re-rating
Applications
Agency Approvals
Secondary protection for space constrained applications
Agency File Number
253 Series 251 Series
Agency
Ampere Range
• Flat–panel displayTV
• LCD monitor
• Power supply
• Audio/Video system
• Lighting system
• Medical equipment
E10480
29862
0.062A - 15A
0.062A - 15A
• LCD backlight inverter
• Office machines
PS
E
PSE_NBK200416-JP1021
1A - 5A
Electrical Characteristics for Series
J50158379
N/A
0.500A - 10A
0.062A - 15A
% of Ampere
Ampere Rating
Rating
OpeningTime
FM10
100%
0.062A - 15A
0.062A - 7A
10A
4 Hours, Min.
1 Second, Max.
3 Seconds, Max.
10 Seconds, Max.
0.500A, 1A, 2A,
2.5A, 3A, 4A, 5A
2009010207366577
200%
Note: See Electrical Specifications by Item table for specific approved ratings.
12 - 15A
0.500A, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
0.5A, 1A, 2A, 2.5A,
3A, 4A, 5A, 7A, 10A
0.500A, 1A, 2A,
2.5A, 3A, 4A, 5A,
7A, 10A
275%
400%
1000%
300 msecs., Max.
30 msecs., Max.
4 msecs., Max.
Additional Information
ꢀatasꢁeet
ꢀesꢁurꢂes
251 Series
ꢀaꢁꢂles
251 Series
251 Series
ꢀatasꢁeet
253 Series
ꢀesꢁurꢂes
253 Series
ꢀaꢁꢂles
253 Series
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Application testing is strongly recommended.
Revised: 05/31/18
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting Fuse > 251/253 Series
Electrical Specifications by Item
Agency Approvals
Max
Nominal
Nom
Voltage
Drop
(V)
Ampere
Rating
(A)
Ordering Ordering
Number Number
Nominal
Melting
Amp
Code
Voltage Interrupting
Cold
QPL
PS
E
Rating
(V)
Rating
Resistance
(Ohms)
253 Series
Only
(Std.)
(Mil.)
I2t (A2 sec)
.062
.125
.200
.250
.375
.500
.630
.750
1.00
1.25
1.50
2.00
2.50
3.00
3.50
4.00
5.00
7. 0 0
10.0
12.0
15.0
.062 251.062 253.062
.125 251.125 253.125
.200 251.200 253.200
.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
125
32
7.000
1.700
0.000113
0.00174
0.0048
0.0116
0.0296
0.0598
0.08
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
0.345
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
0.895
0.665
0.395
0.302
0.205
0.175
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
.750 251.750 253.750
x
x
x
x
001.
251001. 253001.
0.128
0.100
x
x
x
x
x
x
x
x
x
300 A @
125VDC
1.25 2511.25
01.5
25101.5 25301.5
0.0823
0.0473
0.0360
0.0295
0.0240
0.0204
0.0158
0.0107
0.0072
0.21
x
x
x
x
x
x
x
x
x
x
x
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
50A@125VAC
x
x
x
x
x
x
x
0 0 7.
251007. 253007.
010. 251010. 253010.
012. 251012.
015. 251015. 253015.
300A@32VDC
0.0059
& 50A@32VAC
32
.00446
x
Note: Higher ampere ratings are available. Please contact LittelfuseTechnical Support or your Littelfuse products representative for assistance.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/31/18
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting Fuse > 251/253 Series
Temperature Re-rating Curve
AverageTime Current Curves
100
10
1
0.1
Note:
1. Re-rating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.01
Soldering Parameters
0.001
0.05 0.1
1
10
100
1000
Recommended Process Parameters:
Cꢈꢉꢉꢃꢄꢀ ꢁꢄ Aꢂꢊꢃꢉꢃꢅ
Lead-Free Recommendation
Wave Parameter
for 251 Series only
Preheat:
(Typical Industry Recommendation)
(Depends on Flux ActivationTemperature)
Temperature Minimum:
Temperature Maximum:
PreheatTime:
100°C
150°C
60-180 seconds
Solder PotTemperature:
Solder DwellTime:
260°C Maximum
2-5 seconds
Recommended Hand Soldering Parameters:
Solder IronTemperature: 350°C +/- 5°C
HeatingTime: 5 seconds max.
Note:These devices are not recommended for IR or
Convection Reflow process
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/31/18
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting Fuse > 251/253 Series
Product Characteristics
Encapsulated, Epoxy-coated Body
251 Series: Pure tin-coated copper wire leads
253 Series: Solder-coated copper wire leads
MIL-STD-202, Method 201 (10–55
Hz); Method 204, Test Condition C
(55–2000 Hz at 10 G’s Peak)
Materials
Vibration
Shock
MIL-STD-202, Method 213, Test
Condition I (100 G’s peak for 6
msecs.)
Solderability
MIL-STD-202, Method 208
MIL-STD-202, Method 211, Test Condition A
(will withstand a 7lbs. axial pull test)
Lead Pull Force
MIL-STD-202, Method 302,
Test Condition A (10,000 ohms
minimum at 100 volts)
Insulation Resistance
(After Opening):
For fuses to MIL-PRF-23419, FM10 change the
series number from
251 to 253
FusesTo MIL
SPEC
Moisture Resistance
MIL-STD-202, Method 106
Operating
Temperature
–55ºC to +125ºC (Consider re-rating)
Withstands 60 seconds above 200OC
and up to 260ºC, maximum
Resistance to Soldering
Heat
Flammability Rating
UL 94V–0
Part Numbering System
Dimensions
251 Series Markings
(T1 lead length)
0251 xxxx N R T1 L
62.7 (2.468")
52.4 (2.062")*
Series
251 = Standard type
253 = Military type
27.78
(1.094")
27.78
(1.094")
7.11 (.280")
Current Rating
Refer to Amp Code column of
Electrical SpecificationsTable
F
1 A
L
2.80
(.11")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
Quantity
N = 5000
F
1 A
L
P
= 2000
M = 1000
H = 100
Wire Diameter:
0.64 (.025") for 0.062-10 amp,
0.81 (.032") for 12-15 amp
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
253 Series Markings
(T3 lead length)
83.31 (3.28")
Lead Length
73.0 (2.874")**
38.1
(1.5")
38.1
The default lead length for Ammo pack and
Loose pack is nowT1 for 251 series, and
remainsT3 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**
7.11 (.280")
(1.5")
F
1 A
L
2.61 (.103")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
Option Codes
F
L = RoHS + HF
(Only applies to 251 Series)
1 A
L
Wire Diameter:
0.64 (.025") for 0.062-10 amp,
0.81 (.032") for 15 amp
Packaging
Packaging
Specification
Quantity &
Packaging Code
Packaging Option
Please refer to
available quantities
above in "Part
Numbering
*T1: 52.4mm (2.062")
Tape and Reel
EIA 296
EIA 296
**T3: 73mm (2.874')
Tape and Reel
System”
The default lead length for both ammo pack and loose pack isT1 for 251 and isT3 for 253.
Notes: T1 dimension is defined as the length of the component between the two
*
tapes. The full component length is 62.7mm (2.468").T1 length is for 251 series only.
** T3 dimension is defined as the length of the component between the two
tapes. The full component length is 83.3.7mm (3.28”). T3 length is for 253 series only.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at:
www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/31/18
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