Littelfuse 434 Series User Manual
Surface mount fuses, 434 series fuse
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
t 5IF4MJN-JOF
fuse is an extremely
small, low profile design
(0603 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.
t 5IFMPXFSIFJHIUQSPmMF
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.
t $FMMQIPOFT
t #BUUFSZQBDLT
t %JHJUBMDBNFSBT
t %7%QMBZFST
t )BSEEJTLESJWFT
Secondary protection for space constrained applications
such as: