Littelfuse 157 Series - Manual

© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/20/14
Surface Mount Fuses
NANO 2® > 157 Fuse and Holder Combination
157 Series – Standard Nano Fuse and Clip Assembly
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.
Agency Approvals
Agency Agency File number Ampere rAnge
e14721 0.062A ~ 10A
PS
E
nbK030205-e10480A
nbK030205-e10480b
nbK101105-e184655
1A
1.5A - 5A
6.3A - 10A
Features
Electrical Characteristics for Series
• Surface Mountable, Very
Fast Acting Fuse.
• Fully compatible with
RoHS/Pb-Free solder
alloys and higher
temperature profiles
associated with leadfree
assembly.
• Easily replaceable on PC
Board (Field Replaceable)
• RoHS compliant and
Halogen Free
• Available in ratings of
0.062 ~ 10 Amperes.
% of Ampere rating Opening Time at 25ºc
100% 4 hours Minimum
200% 5 secs. Maximum
Applications
Electrical Specifications by Item
1. Cold resistance measured at less than 10% of rated current at 23ºC.
2. I 2 t values stated for 8ms opening time.
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.
• Instrumentation
• Base Stations • Telecommunications
PS
E
Ampere
rating (A)
Amp
code
max Voltage
rating (V)
interrupting
rating (A)
Fuse
Furnished
nominal cold
resistance
(Ohms)
nominal
melting
i 2 t (A 2 sec)
Agency Approvals
PS
E
0.062 .062 125
50A @ 125 VAC/VDC
300A @ 32 VDC
0451.062 5.5372 0.00019 X
0.080 .080 125 0451.080 4.0500 0.00033 X
0.100 .100 125 0451.100 3.1000 0.00138 X
0.125 .125 125 0451.125 1.7059 0.00286 X
0.160 .160 125 0453.160 1.2157 0.0048 X
0.200 .200 125 0453.200 1.3971 0.00652 X
0.250 .250 125 0453.250 1.0496 0.01126 X
0.315 .315 125 0453.315 0.3881 0.0311 X
0.375 .375 125 0453.375 0.4541 0.0442 X
0.400 .400 125 0453.400 0.4233 0.0551 X
0.500 .500 125 0453.500 0.3046 0.0824 X
0.630 .630 125 0453.630 0.2022 0.1381 X
0.750 .750 125 0453.750 0.1444 0.2143 X
0.800 .800 125 0453.800 0.1355 0.2654 X
1.0 001. 125 0453001. 0.0780 0.6029 X X
1.25 1.25 125 04531.25 0.078 0.664 X X
1.5 01.5 125 045301.5 0.0634 0.853 X X
1.6 01.6 125 045301.6 0.0580 1.060 X X
2.0 002. 125 0453002. 0.0373 0.530 X X
2.5 02.5 125 045302.5 0.0288 1.029 X X
3.0 003. 125 0453003. 0.0229 1.650 X X
3.15 3.15 125 04533.15 0.0215 1.920 X X
3.5 03.5 125 045303.5 0.0203 2.469 X X
4.0 004. 125 0453004. 0.0163 3.152 X X
5.0 005. 125 0453005. 0.0127 5.566 X X
6.3 06.3 125 045306.3 0.0098 9.17 X X
7.0 007. 125 0453007. 0.0092 10.32 X X
8.0 008. 125 0453008. 0.0079 20.23 X X
10.0 010. 125
35A @ 125 VAC / 50A @125 VDC
300A @ 32VDC
0453010. 0.0058 26.46 X X