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Littelfuse 434 Series User Manual

Surface mount fuses, 434 series fuse

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31

Revision: February 13, 2008

Surface Mount Fuses

©2008 Littelfuse, Inc.

Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information

Thin Film > 0603 Size > Very Fast Acting > 434 Series

434 Series

434 Series Fuse

Description

Agency Approvals

Agency

Agency File Number

Ampere Range

®

E10480

250mA - 3A

®

LR29862

250mA - 3A

Electrical Characteristics for Series

Features

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fuse is an extremely
small, low profile design
(0603 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.

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produces a flat surface for
improved performance in
pick-and-place operations
and an alternate solution
for height critical
applications.

Applications

®

®

% of Ampere

Rating

Opening Time at 25

O

C

100%

4 hours, Minimum

200%

5 seconds, Maximum.

300%

0.2 seconds, Maximum

The 434 series fast-acting surface mount fuse series is
an ultra small (0603 size) thin-film device designed for
secondary protection of circuits used in space constrained
applications such as hand-held portable electronic devices.

For RoHS compliant and lead-free design, please refer to
the Littelfuse 467 series thin film fuse.

Ampere

Rating

(A)

Amp

Code

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

I

2

t (A

2

sec)

Agency Approvals

®

®

0.250 .250 32

50A @32 V AC/DC

0.3750

0.0030

x

x

0.375 .375 32

0.2650

0.0053

x

x

0.500 .500 32

0.1903

0.0087

x

x

0.680

.680

32

0.1250

0.0109

x

x

0.750 .750 32

0.1140

0.0171

x

x

1.00

001. 32

0.0720 0.0212

x

x

1.25 1.25 32

35A @32 V AC/DC

0.0540

0.0320

x

x

1.50 01.5 32

0.0480

0.0526

x

x

1.75 1.75 32

0.0390

0.0661

x

x

2.00 002. 32

0.0360

0.1040

x

x

2.50 02.5 32

0.0280

0.1750

x

x

3.00 003. 32

0.0230

0.1980

x

x

3.50 03.5 32

0.0190

0.2650

x

x

4.00 004. 32

0.0170

0.3520

x

x

5.00 005. 32

0.0130

1.2970

x

x

Electrical Specifications by Item

1. Measured at 10% of rated current, 25ºC.

2. Measured at rated voltage.

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Secondary protection for space constrained applications
such as: