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1
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
441 Series
Ceramic Fuse > 441 Series
Please refer to www.littelfuse.com/series/441.html for current information.
441
Series
441 Series – 0603 High I2t Fuse
Description
This 100% Lead-free, RoHS compliant and Halogen-free
fuse series has been designed specifically to provide over
current protection to circuits that see high working ambient
temperatures (up to 150C) and high inrush currents.
The general design ensures excellent temperature stability
and performance reliability.
This high It fuse series is designed to have ultra high inrush
current withstand capability to avoid nuisance fuse open.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
AMPERE RANGE
E10480
2A - 6A
Pending
2A - 6A
Features
Electrical Characteristics
from -55C to 150C
RoHS compliant
and lead-free reflow /
wave soldering
% of Ampere
Rating
Ampere Rating
OpeningTime at 25C
100%
2A - 6A
4 Hours Minimum
350%
2A - 6A
5 Seconds Maximum
Applications
Electrical Specifications by Item
Notes:
1. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msecs.
2. Nominal Resistance measured with < 10% rated current.
3. Nominal Melting It measured at 1 msec. opening time.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
Devices designed to carry out rated current for 4 hours minimum. It is recommended that
devices be operated continuously at no more than 80% rated current. See “Temperature
Rerating Curve”for additional rerating information.
Devices designed to be mounted with marking code facing up.
Ampere
Rating
(A)
Amp
Code
Max. Voltage
Rating (V)
Interrupting
Rating
Nominal
Resistance
(Ohms)2
Nominal
Melting I2t
(A2Sec.)3
Nominal Voltage
Drop At Rated
Current (V)4
Nominal Power
Dissipation At
Rated Current (W)
Agency Approvals
2
002.
32
50 A @ 32 VDC
0.0320
0.3103
0.0551
0.110
X
2.5
02.5
32
0.0200
0.5520
0.0534
0.134
X
3
003.
32
0.0158
0.8165
0.0531
0.159
X
3.5
03.5
32
0.0117
0.9438
0.0468
0.164
X
4
004.
32
0.0097
1.2659
0.0475
0.190
X
5
005.
32
0.0073
1.6287
0.0472
0.236
X
6
006.
32
0.0056
2.6049
0.0464
0.278
X
Revised: May 17, 2010