Surface Mount Fuses
Ceramic Fuse > 440A Series
440A Series, 1206 High I2t Fuse
RoHS
Pb
Description
The 440A Series AECQ-Compliant 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
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
0.500A - 8A
29862
0.500A - 8A
Electrical Characteristics for Series
% of Ampere
Rating
Ampere Rating
Opening Time at 25ºC
100%
0.50A - 0.75A
1.75A - 8A
4 hours, Minimum
350%
0.50A - 0.75A
1.75A - 8A
5 secs., Maximum
• Ultra high I2t values
• Operating Temperature
from -55ºC to +150ºC
• Fast response to faulty
current to ensure over• 100% Lead-free, RoHS
compliant and Halogen-free current protection to
sensitive electronic
• Meets Littelfuse’s
component
automotive qualifications*
* - Largely based on Littelfuse internal AEC-Q200 test plan.
Applications
• Li-ion Battery
• LED Lighting
• Automotive Navigation
System
• TFT Display
• Battery Management
System (BMS)
• Cluster
Additional Information
Datasheet
Resources
Samples
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code
Max. Voltage
Rating (V)
0.5
.500
63
0.75
.750
63
1.75
1.75
63
2
002.
63
2.5
02.5
63
Interrupting Rating
(AC/DC)1
50A @ 63VAC/DC
Agency Approvals
Nominal
Resistance
(Ohms)2
Nominal
Melting I2t
(A2Sec.)3
Nominal Voltage
Drop At Rated
Current (V)4
Nominal Power
Dissipation At Rated
Current (W)
0.8140
0.02642
0.4831
0.242
x
X
0.4624
0.09312
0.3983
0.299
x
X
0.0450
0.3312
0.0777
0.136
x
X
0.0385
0.4326
0.0792
0.158
x
X
0.02850
0.8191
0.0747
0.187
x
X
0.02252
1.232
0.0742
0.223
x
X
0.01845
1.789
0.0757
0.265
x
X
3
003.
63
3.5
03.5
63
4
004.
63
0.01553
2.601
0.0709
0.284
x
X
5
005.
63
0.0120
4.761
0.0654
0.327
x
X
7
007.
63
0.00753
8.464
0.0696
0.487
x
X
8
008.
63
0.00634
12.95
0.0655
0.524
x
X
50A @ 32VAC/63VDC
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.
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 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.
Devices designed to be mounted with marking code facing up.
© 2019 Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised: 04/30/19
Surface Mount Fuses
Ceramic Fuse > 440A Series
1.75A
2A
2.5A
3A
3.5A
4A
5A
7A
8A
100
140
120
100
10
80
60
40
-65
-45
-25
-5
15
35
55
75
95
115
135
155
TEMPERATURE (°C)
TIME IN SECONDS
PERCENT OF RATING
0.75A
Average Time Current Curves
0.5A
Temperature Rerating Curve
1
0.1
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 20% for
continuous operation.
Example:
0.01
For continuous operation at 75 degrees celsius, the fuse should be derated as follows:
I = (0.80)(0.85)IRAT = (0.68)IRAT
0.001
0.1
1
10
1000
100
CURRENT IN AMPERES
Soldering Parameters
Pb-free assembly
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 seconds
Average Ramp-Up Rate (Liquidus Temp (TL)
to peak)
3°C/second max.
TS(max) to TL - Ramp-up Rate
5°C/second max.
Reflow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
Peak Temperature (TP)
260+0/-5 °C
Time within 5°C of actual peak Temperature
(tp)
10 – 30 seconds
Ramp-down Rate
6°C/second max.
Time 25°C to peak Temperature (TP)
8 minutes max.
Do not exceed
260°C
Wave Soldering
tP
TP
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
Temperature
Reflow Condition
tL
Ramp-down
TS(min)
25
Preheat
tS
time to peak temperature
(t 25ºC to peak)
Time
260°C, 10 seconds max.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/30/19
Surface Mount Fuses
Ceramic Fuse > 440A Series
Product Characteristics
Body: Advanced Ceramic
Terminations: Ag / Ni / Sn (100% Lead-free)
Element Cover Coating: Lead-free Glass
High Temperature
Storage
Moisture Sensitivity
Level
IPC/JEDEC J-STD-020, Level 1
Biased Humidity
Solderability
IPC/ECA/JEDEC J-STD-002, Condition C
Operational Life
MIL-STD-202, Method 108, Test Condition D
Humidity Test
MIL-STD-202, Method 103, Conditions D
Resistance to Solder
Heat
MIL-STD-202, Method 215
MIL-STD-202, Method 210, Condition B
Resistance to
Solvents
Mechanical Shock
MIL-STD-202, Method 213, Test Condition C
Moisture Resistance
MIL-STD-202, Method 106
Thermal Shock
MIL-STD-202, Method 107, Condition B
Mechanical Shock
MIL-STD-202, Method 213, Condition A
Vibration
MIL-STD-202, Method 201
Materials
Vibration,
High Frequency
Dissolution of
Metallization
Terminal Strength
MIL-STD-202, Method 204, Condition D
IPC/ECA/JEDEC J-STD-002, Condition D
IEC 60127-4
Dimensions
MIL-STD-202, Method 108 with exemptions
Thermal Shock Test
High Frequency
Vibration
Resistance to
Soldering Heat
JESD22 Method JA-104,
Test Conditions B and N
MIL-STD-202, Method 103, 85C/85% RH with
10% operating power for 1000 hrs
MIL-STD-202, Method 204
MIL-STD-202, Method 210, Test Condition B
Solderability
JESD22-B102E Method 1
Terminal Strength
for SMD
AEC Q200-006
Board Flex
AEC Q200-005
Electrical
Characterization
3 Temperature Electrical
Part Marking System
Amp Code
3.200 ± .1778
[.126 ± .007]
1.63 + .10/ -.20
1.000
[.039] [.064 + .004/ -.008]
F
0.750
G
1.75
L
002.0
N
O
02.5
.835 +/-.015
[.0329 +/-.006]
TERMINATION
Marking Code
0.500
003.0
P
03.5
R
004.0
S
005.0
T
007.0
W
008.0
X
Part Numbering System
0440 008. W R A
0.520 ± .200
[.020 ± .008]
1.000
[.039]
SERIES
AMP CODE
1.500
[.059]
QUANTITY CODE
W = 3000 pcs
1.800
[.071]
PACKING CODE
R = Reel Pack
3.500
[.138]
AEC-Q200 QUALIFIED
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity and
Packaging Code
8mm Tape and Reel
EIA-481, IEC 60286, Part 3
3000
WRA
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/30/19
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