0251012.MRL [LITTELFUSE]
Electric Fuse, Very Fast Blow, 12A, 32VAC, 32VDC, 50A (IR), Through Hole, HALOGEN FREE AND ROHS COMPLIANT;
| 型号： | 0251012.MRL |
| 厂家： | 
LITTELFUSE |
| 描述： | Electric Fuse, Very Fast Blow, 12A, 32VAC, 32VDC, 50A (IR), Through Hole, HALOGEN FREE AND ROHS COMPLIANT 电路保护 |
| 文件： | 总4页 (文件大小：1145K) |
| 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
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
•ꢀ Veryꢀfast-acting
•ꢀ Smallꢀsizeꢀ
•ꢀ Wideꢀcurrentꢀratingꢀrangeꢀ
(62mA- 15A)
•ꢀ Halogen-freeꢀavailableꢀ
•ꢀ Wideꢀoperatingꢀ
temperature range
•ꢀ Lowꢀtemperatureꢀrerating
Applications
Agency Approvals
Secondaryꢀprotectionꢀforꢀspaceꢀconstrainedꢀapplications
Agency
Agency File Number
E10480
Ampere Range
62mA - 15A
62mA - 15A
•ꢀ Flat–panelꢀdisplayꢀTVꢀ
•ꢀ LCDꢀmonitor
•ꢀ Powerꢀsupply
•ꢀ Audio/Videoꢀsystem
•ꢀ Lightingꢀsystem
•ꢀ Medicalꢀequipment
•ꢀ LCDꢀbacklightꢀinverter
•ꢀ Officeꢀmachines
LR 29862
PS
E
JET1896-31007-1004
J50158379
1A - 5A
Electrical Characteristics for Series
500mA - 10A
62mA - 15A
% 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
Additional Information
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.
Datasheet
Resources
251 Series
Samples
251 Series
251 Series
Datasheet
253 Series
Resources
253 Series
Samples
253 Series
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/10/14
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
QPL
(Std.)
(Mil.)
I2t (A2 sec)
E
.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
1.011
0.665
0.395
0.280
0.205
0.175
0.128
0.000113
0.00174
0.0048
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
0.345
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
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
voltageꢀDC
.750 251.750 253.750
x
x
x
x
50 A @ rated
voltageꢀAC
001.
251001. 253001.
x
x
x
x
x
x
x
x
x
1.25 2511.25
0.100
01.5
25101.5 25301.5
For CCC 7A:
70 A @ rated
voltageꢀAC
0.0823
0.0473
0.0360
0.0290
0.0240
0.0204
0.0155
0.0105
0.00705
0.0055
0.00446
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
x
For CCC 10A:
100 A @ rated
voltageꢀAC
x
x
x
x
x
x
0 0 7.
251007. 253007.
010. 251010. 253010.
012. 251012.
015. 251015. 253015.
32
x
Note:ꢀꢀHigherꢀampereꢀratingsꢀareꢀavailable.ꢀPleaseꢀcontactꢀLittelfuseꢀTechnicalꢀSupportꢀorꢀyourꢀLittelfuseꢀproductsꢀrepresentativeꢀforꢀassistance.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/10/14
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
Lead-Free Recommendation
Wave Parameter
for 251 Series only
Preheat:
(TypicalꢀIndustryꢀRecommendation)
(DependsꢀonꢀFluxꢀActivationꢀTemperature)
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:
SolderꢀIronꢀTemperature:ꢀ350°ꢀCꢀ+/-ꢀ5°C
HeatingTime: 5 seconds max.
Note:These devices are not recommended for IR or
Convection Reflow process
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/10/14
Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 251/253 Series
Product Characteristics
Encapsulated,ꢀEpoxy-Coatedꢀ
Body:ꢀPureꢀTin-coatedꢀCopperꢀwireꢀleads
MIL-STD-202,ꢀMethodꢀ201ꢀ(10–55ꢀ
Hz);ꢀMethodꢀ204,ꢀTestꢀConditionꢀCꢀ
(55–2000ꢀHzꢀatꢀ10ꢀG’sꢀPeak)
Materials
Vibration
Shock
Solderability
Lead Pull Force
MIL-STD-202,ꢀMethodꢀ208
MIL-STD-202,ꢀMethodꢀ213,ꢀTestꢀ
ConditionꢀIꢀ(100ꢀG’sꢀpeakꢀforꢀ6ꢀ
msecs.)
MIL-STD-202,ꢀMethodꢀ211,ꢀTestꢀConditionꢀ
Aꢀ(willꢀwithstandꢀaꢀ7lbs.ꢀaxialꢀpullꢀtest)
251/253ꢀSeriesꢀisꢀavailableꢀinꢀFM10ꢀonꢀ
QPL for MIL-PRF-23419. To order, change
251 to 253
MIL-STD-202,ꢀMethodꢀ302,
Test Condition A (10,000 ohms
minimumꢀatꢀ100ꢀvolts)
Insulation Resistance
(After Opening):
FusesTo MIL SPEC
Operating
Temperature
Moisture Resistance
MIL-STD-202,ꢀMethodꢀ106
–55ºCꢀtoꢀ+125ºC
Withstandsꢀ60ꢀsecondsꢀaboveꢀ200OC
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
27.78
(1.094")
27.78
(1.094")
7.11 (.280")
253 = Military type
F
1 A
L
2.80
(.11")
MAX
Current Rating
Refer to Amp Code column of
Electrical SpecificationsTable
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
F
1 A
L
Wire Diameter:
Quantity
0.64 (.025") for 0.62-10.0 amp,
0.81 (.032") for 12-15 amp
N = 5000
P = 2000
M = 1000
H = 100
251 Series (Halogen-free Version) Markings
(T1 lead length)
62.7 (2.468")
52.4 (2.062")*
27.78
(1.094")
27.78
(1.094")
Type of Packaging
7.11 (.280")
R = Reel
A = Ammo Pack
X = Loose Pack
F
1 A
L
2.80
(.11")
MAX
5.0 (.197")
6.35 (.25")
tape
6.35 (.25")
tape
Lead Length
F
1 A
L
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**
Wire Diameter:
0.64 (.025") for 0.62-10.0 amp,
0.81 (.032") for 12-15 amp
253 Series Markings
(T3 lead length)
83.31 (3.28")
73.0 (2.874")**
7.11 (.280")
38.1
(1.5")
38.1
(1.5")
Option Codes
L = RoHS + HF
(Only applies to 251 Series)
F
1 A
L
2.61 (.103")
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 15 amp
Packaging
Quantity &
Packaging Option
Packaging Specification
EIA 296
Packaging Code
*T1:ꢀ52.4mmꢀ(2.062")ꢀTapeꢀandꢀReel
**T3:ꢀ73mmꢀ(2.874')ꢀTapeꢀandꢀReel
ꢀꢀꢀꢀꢀꢀPleaseꢀreferꢀtoꢀavailableꢀquantitiesꢀ
above in "Part Numbering System”
EIA 296
TheꢀdefaultꢀleadꢀlengthꢀforꢀbothꢀammoꢀpackꢀandꢀlooseꢀpackꢀisꢀT1ꢀforꢀ251ꢀandꢀisꢀT3ꢀforꢀ253.
Notes:ꢀꢀ
*ꢀꢀꢀT1ꢀdimensionꢀisꢀdefinedꢀasꢀtheꢀlengthꢀofꢀtheꢀcomponentꢀbetweenꢀtheꢀtwoꢀtapes.ꢀTheꢀfullꢀcomponentꢀlengthꢀisꢀ62.7mmꢀ(2.468").T1 length is for 251 series only.
**ꢀꢀT3ꢀdimensionꢀisꢀdefinedꢀasꢀtheꢀlengthꢀofꢀtheꢀcomponentꢀbetweenꢀtheꢀtwoꢀtapes.ꢀTheꢀfullꢀcomponentꢀlengthꢀisꢀ83.3.7mmꢀ(3.28”).ꢀT3 length is for 253 series only.
ꢀ
ꢀ
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/10/14
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