Surface Mount Fuses Datasheet
440A Series
AEC-Q200 Qualified > Ceramic Fuse
RoHS Pb
Description
The 440A Series AEC-Qualified fuses are specifically tested to
cater to secondary circuit protection needs of compact auto
electronics applications.
The general design ensures excellent temperature stability and
performance reliability. This high I2t fuse series is designed to
have ultra high inrush current withstand capability to avoid
nuisance fuse open.
Features & Benefits
■ OperatingTemperature from
■ Fast response to faulty
current to ensure over-current
protection to sensitive
-55ºC to +150ºC
■ 100% Lead-free, RoHS
compliant and Halogen-free
electronic component
■ Recognized to UL/CSA/NMX
248-1 and UL/CSA/NMX 248-14
■ AEC-Q200 Qualified
■ Ultra high I2t values
Additional Information
Applications
■ Li-ion Battery
■ LED Lighting
■ TFT Display
■ Battery Management System
(BMS)
■ Automotive Navigation
Resources
Accessories
Samples
System
■ Cluster
Electrical Characteristics for Series
Agency Approvals
% of Ampere
Rating
Ampere Rating
OpeningTime at 25ºC
4 hours, Minimum
5 secs., Maximum
Agency
Agency File Number
Ampere Range
0.50A - 0.75A
1.75A - 8A
0.50A - 0.75A
1.75A - 8A
100%
350%
E10480
29862
0.500A - 8A
0.500A - 8A
Electrical Specifications by Item
Agency Approvals
Ampere
Rating
(A)
Nominal
Resistance
(Ohms)2
Nominal
Melting I2t
(A2Sec.)3
NominalVoltage
Drop At Rated
Current (V)4
Nominal Power
Dissipation At Rated
Current (W)
Amp Max.Voltage Interrupting Rating
Code
Rating (V)
(AC/DC)1
0.5
0.75
1.75
2
.500
.750
1.75
002.
02.5
003.
03.5
004.
005.
0 0 7.
008.
63
63
63
63
63
63
63
63
63
63
63
0.8140
0.4624
0.0450
0.0385
0.02850
0.02252
0.02642
0.09312
0.3312
0.4326
0.8191
1.232
0.4831
0.3983
0.0777
0.0792
0.0747
0.0742
0.0757
0.0709
0.0654
0.0696
0.0655
0.242
0.299
0.136
0.158
0.187
0.223
0.265
0.284
0.327
0.487
0.524
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
50A @ 63VAC/DC
2.5
3
3.5
4
50A @ 32VAC/63VDC 0.01845
1.789
0.01553
0.0120
2.601
5
4.761
7
0.00753
0.00634
8.464
8
12.95
Notes:
1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated
voltage with time constant < 0.8 msec.
Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated
continuously at no more than 80% rated current. See “Temperature Derating Curve”for additional derating
information.
2. Nominal Resistance measured with < 10% rated current.
3. Nominal Melting I²t measured at 1msec. opening time.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
Devices designed to be mounted with marking code facing up.
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
6
Revised: GD. 06/16/23