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参数资料
| 型号： | 044903.5MR |
| 元件分类： | 保险丝 |
| 英文描述： | SLOW BLOW ELECTRIC FUSE, 3.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT |
| 封装： | HALOGEN FREE AND ROHS COMPLIANT |
| 文件页数： | 1/4页 |
| 文件大小： | 165K |
| 代理商： | 044903.5MR |
53
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
449 Series
NANO2 > Slo-Blo > 449 Series
Please refer to www.littelfuse.com/series/449.html for current information.
449
Series
449 Series Fuse
Description
The lead free NANO2 Slo-Blo fuse is RoHS compliant,
Halogen Free and 100% lead-free. This product is fully
compatible with lead-free solder alloys and higher
temperature profiles associated with lead-free assembly.
The Slo-Blo design has enhanced inrush withstand
characteristics over the NANO2 Fast-Acting Fuse. The unique
time delay feature of this fuse design helps solve the
problem of nuisance “opening” by accommodating inrush
currents that normally cause a fast-acting fuse to open.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
AMPERE RANGE
E10480
375mA - 5A
PS
E
NBK030205
1A - 5A
Electrical Characteristics for Series
Features
% of Ampere
Rating
OpeningTime
100%
4 hours, Minimum
200%
1 sec., Min.; 60 sec., Max.
300%
0.2 sec., Min.; 3 sec., Max
800%
0.02 sec., Min.; 0.1 sec., Max.
Electrical Specifications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2sec)
Agency Approvals
0.375
125
50 amperes @125 VAC/
VDC
PSE: 100 amperes
@100 VAC
1.5130
0.088
x
0.500
125
0.7633
0.258
x
0.750
125
0.4080
0.847
x
1.00
001.
125
0.2516
1.76
x
1.50
01.5
125
0.1186
4.70
x
2.00
002.
125
0.0708
6.76
x
2.50
02.5
125
0.0400
13.18
x
3.00
003.
125
0.0352
19.55
x
3.50
03.5
125
0.0261
32.70
x
4.00
004.
125
0.0227
40.80
x
5.00
005.
125
0.0171
59.59
x
Applications
equipment
protection
Secondary protection for space constrained applications:
Free
ratings available
temperature range
de-rating
PS
E
PS
E
Notes: - l2t calculated at 8ms. Resistance is measured at 10% of rated current, 25C
Revised: December 17, 2010
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