© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
1. Cold resistance measured at less than 10% of rated current at 23ºC.
2. I
Please refer to www.littelfuse.com/series/157.html for current information.
Rating (A)
Agency Approvals
Electrical Characteristics for Series
Electrical Specifications by Item
AGENCY
Ampere
% of Ampere Rating
2
t values stated for 8ms opening time.
0.062
0.080
0.100
0.125
0.160
0.200
0.250
0.315
0.375
0.400
0.500
0.630
0.750
0.800
3.15
10.0
1.25
2.5
3.0
3.5
4.0
5.0
6.3
8.0
1.0
1.5
1.6
2.0
PS
7 .0
E
200%
100%
157 Series – Standard Nano Fuse and Clip Assembly
Code
Amp
004.
005.
008.
.062
.080
.100
.125
.160
.200
.250
.315
.375
.400
.500
.630
.750
.800
002.
02.5
003.
3.15
03.5
06.3
010.
001.
1.25
01.5
01.6
007 .
AGENCY FILE NUMBER
NBK030205-E10480A
NBK030205-E10480B
NBK101105-E184655
Max Voltage
Rating (V)
E14721
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
Opening Time at 25ºC
35A @ 125 VAC / 50A @125 VDC
50A @ 125 VAC/VDC
300A @ 32 VDC
300A @ 32VDC
Interrupting
Rating (A)
AMPERE RANGE
NANO
Surface Mount Fuses
0.062A ~ 10A
6.3A - 10A
1.5A - 5A
1A
2®
3. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved
4. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options.
> 157 Fuse and Holder Combination
Revised: February 19, 2010
95
Furnished
0453003.
0453004.
0453005.
0453008.
0453.160
0453.200
0453.250
0453.315
0453.375
0453.400
0453.500
0453.630
0453.750
0453.800
0453002.
045302.5
04533.15
045303.5
045306.3
0451.062
0451.080
0451.100
0451.125
0453001.
04531.25
045301.5
045301.6
0453007 .
0453010.
Description
The 157 Series – Standard Nano Fuse/Clip assembly is a
small, square, very fast acting surface mount fuse that is
assembled in surface mountable fuse clips. The fuse clip
and pre-installed fuse combination can be automatically
placed in PC Board in one efficient manufacturing
operation. It permits quick and easy replacement of fuses
without performing desoldering process, even in the field
and without exposing the PC Board to detrimental effects
of rework solder heat.
Features
Applications
Fuse
Very Fast Acting Fuse.
RoHS/Pb-Free solder
alloys and higher
temperature profiles
associated with leadfree
assembly.
Nominal Cold
Resistance
(Ohms)
4.0500
0.5600
0.3050
0.2458
0.0634
0.0580
0.0373
0.0288
0.0229
0.0203
0.0098
0.0092
0.0079
0.0058
5.5372
3.1000
1.7059
1.3971
1.0496
0.3881
0.6083
0.4181
0.2120
0.1537
0.0215
0.0163
0.0127
1.2157
0.078
I
Nominal
2
Melting
0.00033
0.00286
0.00652
0.00019
0.00138
t (A
0.01126
0.0048
0.0311
0.0425
0.0484
0.0795
0.143
0.185
0.271
0.459
0.664
0.853
0.530
2.469
3.152
5.566
10.32
20.23
26.46
1.060
1.029
1.650
1.920
9.17
2
sec)
on PC Board (Field
Replaceable)
Halogen Free
0.062 ~ 10 Amperes.
Agency Approvals
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
157 Series
PS
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
E
PS
E