Surface Mount Fuses
Thin Film > 1206 Size > Very Fast Acting > 433 Series
®
433 Series Fuse
®
Description
The 433 series fast-acting surface mount fuse series
is a small (1206 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 466 series thin film fuse. For new designs of
7 amp please refer to Littelfuse 429 series thin film fuse.
Features
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fuse is an extremely
improved performance in
pick-and-place operations
and an alternate solution
for height critical
Agency Approvals
small, low profile design
(1206 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.
Agency
Agency File Number
Ampere Range
application.
E10480
LR29862
125mA - 5A
125mA - 5A
®
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electrical specification are
identical to the popular
429 Series specifications.
®
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produces a flat surface for
Applications
Electrical Characteristics for Series
Secondary protection for space constrained applications
such as:
% of Ampere
OpeningTime at 25OC
Rating
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100%
4 hours, Minimum
5 sec., Maximum
0.2 sec., Maximum
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200%
300%
Electrical Specifications by Item
Agency Approvals
Ampere
Rating
(A)
Max
Voltage Rating
(V)
Nominal Cold Nominal
Amp
Code
Interrupting
Rating
Resistance
(Ohms)
Melting
®
I2t (A2sec)
®
0.125
0.200
0.250
0.375
0.50
0.60
0.75
0.80
1.00
1.25
1.50
1.75
2.00
2.50
3.00
4.00
5.00
.125
.200
.250
.375
.500
.600
.750
.800
001.
1.25
01.5
1.75
02.0
02.5
03.0
04.0
05.0
125
125
125
125
63
63
63
63
63
63
63
63
63
32
32
24
24
3.45000
0.93800
0.62500
0.37500
0.24050
0.21000
0.13700
0.12250
0.09950
0.07475
0.06250
0.05000
0.03975
0.03065
0.02625
0.01400
0.01100
0.00040
0.00055
0.00100
0.00280
0.00600
0.01310
0.01700
0.03050
0.03500
0.06500
0.12500
0.15000
0.23000
0.50000
0.70000
1.0240
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
x
x
x
x
50A @125 V AC/DC
50A @63 V AC/DC
50A @32 V AC/DC
50A @24 V AC/DC
1.6000
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
©2008 Littelfuse, Inc.
7
433 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Revision: February 13, 2008