Thin Film > 0603 Size > Very Fast Acting > 434 Series
Surface Mount Fuses
434 Series Fuse
Description
®
®
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.
Features
fuse is an extremely
small, low profile design
(0603 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.
Applications
Secondary protection for space constrained applications
such as:
produces a flat surface for
improved performance in
pick-and-place operations
and an alternate solution
for height critical
applications.
Agency Approvals
Agency
®
Agency File Number
Ampere Range
E10480
®
250mA - 3A
250mA - 3A
LR29862
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
300%
Opening Time at 25
O
C
4 hours, Minimum
5 seconds, Maximum.
0.2 seconds, Maximum
Electrical Specifications by Item
Ampere
Rating
(A)
0.250
0.375
0.500
0.680
0.750
1.00
1.25
1.50
1.75
2.00
2.50
3.00
3.50
4.00
5.00
Amp
Code
.250
.375
.500
.680
.750
001.
1.25
01.5
1.75
002.
02.5
003.
03.5
004.
005.
Max
Voltage
Rating
(V)
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
0.3750
0.2650
0.1903
0.1250
0.1140
0.0720
0.0540
0.0480
0.0390
0.0360
0.0280
0.0230
0.0190
0.0170
0.0130
Nominal
Melting
I
2
t (A
2
sec)
0.0030
0.0053
0.0087
0.0109
0.0171
0.0212
0.0320
0.0526
0.0661
0.1040
0.1750
0.1980
0.2650
0.3520
1.2970
Agency Approvals
®
®
50A @32 V AC/DC
35A @32 V AC/DC
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
x
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
31
Revision: February 13, 2008
434 Series