Littelfuse 157 Series User Manual download pdf

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

NBK030205-E10480A

NBK030205-E10480B

NBK101105-E184655

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

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

Ampere

Rating (A)

Amp

Code

Max Voltage

Rating (V)

Interrupting

Rating (A)

Fuse

Furnished

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

t (A

sec)

Agency Approvals

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 0 01. 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 0 0 7. 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

1 2 3

Summary of Contents

Page 1 - Surface Mount Fuses

Page 2 - Temperature Rerating Curve

Page 3 - 0157 001. D R

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Littelfuse 157 Series User Manual

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Summary of Contents

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