Surface Mount Fuses
Thin Film > 0603 Size > Very Fast Acting > 434 Series
®
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
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fuse is an extremely
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produces a flat surface for
improved performance in
pick-and-place operations
and an alternate solution
for height critical
small, low profile design
(0603 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
LR29862
250mA - 3A
250mA - 3A
applications.
®
®
Applications
Secondary protection for space constrained applications
such as:
Electrical Characteristics for Series
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% of Ampere
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OpeningTime at 25OC
Rating
100%
4 hours, Minimum
5 seconds, Maximum.
0.2 seconds, Maximum
200%
300%
Electrical Specifications by Item
Max
Agency Approvals
Ampere
Rating
(A)
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
Amp
Code
Voltage
Rating
(V)
Interrupting
Rating
I2t (A2sec)
®
®
0.250
0.375
0.500
0.680
0.750
1.00
.250
.375
.500
.680
.750
001.
1.25
01.5
32
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
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
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
32
32
32
32
32
32
32
32
32
32
32
32
32
32
50A @32 V AC/DC
1.25
1.50
1.75
1.75
002.
02.5
003.
03.5
004.
005.
2.00
2.50
3.00
3.50
4.00
5.00
35A @32 V AC/DC
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
©2008 Littelfuse, Inc.
31
434 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Revision: February 13, 2008