04381.25WRA [LITTELFUSE]
Electric Fuse, Fast Blow, 1.25A, 32VAC, 63VDC, 50A (IR), Surface Mount,;
| 型号： | 04381.25WRA |
| 厂家： | 
LITTELFUSE |
| 描述： | Electric Fuse, Fast Blow, 1.25A, 32VAC, 63VDC, 50A (IR), Surface Mount, |
| 文件： | 总3页 (文件大小：550K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Surface Mount Fuses
Ceramic Fuse > 438A Series
RoHS Pb
438A Series – 0603 Fast-Acting Fuse
Description
The 438A series AECQ-compliant fuses are specifically
tested to cater secondary circuit protection needs of
compact auto electronics application.
The general design ensures excellent temperature stability
and performance reliability.
The high I²t values which is typical in the Littelfuse ceramic
fuse family ensure high inrush current withstand capability.
Features
• OperatingTemperature
from -55ºC to +150ºC
• Meets Littelfuse's
Automotive qualifications*
• 100% Lead-free, RoHS
compliant and Halogen-
free
• Recognized to UL/CSA/
NMX 248-1 and UL/CSA/
NMX 248-14
Agency Approvals
Agency
Agency File Number
E10480
Ampere Range
0.25A – 6A
• Suitable for both leaded
and lead-free reflow/wave
soldering
29862
0.25A – 6A
* Largely based on Littelfuse internal AECQ-200 test plan.
Applications
• Li-ion Battery
• TFT Display
Electrical Characteristics for Series
• LED Head-Lights
• Battery Management
System (BMS)
% of Ampere
Ampere Rating
Rating
• Automotive Navigation
System
OpeningTime at 25ºC
• Clusters
100%
250%
0.250A – 6A
0.250A – 6A
4 Hours, Minimum
Additional Information
5 Seconds, Maximum
Datasheet
Resources
Samples
Electrical Specifications by Item
Agency Approvals
Ampere
Rating
(A)
Max.
Voltage
Rating (V)
Nominal
Nominal
Melting I2t
(A2Sec.)3
NominalVoltage
Nominal Power
Dissipation At Rated
Current (W)
Amp
Code
Interrupting Rating
Resistance
Drop At Rated
(AC/DC)1
(Ohms)2
Current (V)4
0.25
0.375
0.5
0.75
1
.250
.375
.500
.750
001.
1.25
1.75
002.
02.5
003.
03.5
004.
005.
006.
63VDC
63VDC
63VDC
63VDC
63VDC
63VDC
32VDC
32
2.218
1.247
0.0017
0.0041
0.0100
0.0281
0.0593
0.0510
0.1440
0.181
0.550
0.488
0.486
0.378
0.351
0.365
0.360
0.107
0.095
0.093
0.082
0.079
0.074
0.072
0.138
0.183
0.243
0.284
0.351
0.456
0.540
0.214
0.238
0.279
0.287
0.316
0.370
0.432
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
0.829
50A @ 63VDC
50A @ 32VAC
0.466
0.310
1.25
1.75
2
0.200
50A@32VAC/32VDC
50A @ 32VDC/12VAC
50A @ 24VDC/12VAC
0.1405
0.0490
0.0364
0.0264
0.0210
0.0177
0.0127
0.0086
2.5
3
32
0.240
0.439
0.647
0.730
0.747
32
3.5
4
32
32
5
32
6
24
1.444
Notes:
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
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.
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 Re-rating Curve”for additional re-rating
information.
3. Nominal Melting I²t measured at 1 msec. opening time.
Devices designed to be mounted with marking code facing up.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/19
Surface Mount Fuses
Ceramic Fuse > 438A Series
Temperature Re-rating Curve
AverageTime Current Curves
140
120
100
80
100
10
60
1
40
-65 -45
-25
-5
15
35
55
75
95
115 135 155
TEMPERATURE (°C)
0.1
Note:
1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation.
Example:
For continuous operation at 75 degrees celsius, the fuse should be rerated as follows:
I = (0.80)(0.85)IRAT = (0.68)IRAT
0.01
0.001
0.1
1
10
100
CURRENT IN AMPERES
Soldering Parameters
Reflow Condition
-Temperature Min (Ts(min)
-Temperature Max (Ts(max)
-Time (Min to Max) (ts)
Pb – free assembly
150°C
tP
)
TP
TL
Critical Zone
Pre Heat
)
200°C
Ramp-up
T
L to TP
60 – 180 seconds
tL
Average Ramp-up Rate (LiquidusTemp (TL) to peak) 3°C/second max.
TS(max)
T
S(max) toTL - Ramp-up Rate
5°C/second max.
217°C
Ramp-down
-Temperature (TL) (Liquidus)
-Temperature (tL)
Preheat
Reflow
TS(min)
60 – 150 seconds
260+0/-5 °C
tS
PeakTemperature (TP)
Time within 5°C of actual peakTemperature (tp)
Ramp-down Rate
10 – 30 seconds
6°C/second max.
8 minutes max.
260°C
25
time to peak temperature
(t 25ºC to peak)
Time
Time 25°C to peakTemperature (TP)
Do not exceed
Wave Soldering
260°C, 10 seconds max.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/19
Surface Mount Fuses
Ceramic Fuse > 438A Series
Product Characteristics
Body: Advanced Ceramic
Terminations: Ag/Ni/Sn (100% Lead-free)
Element Cover Coating: Lead-free Glass
High Temperature Storage MIL-STD-202 Method 108 with exemptions
Materials
JESD22 Method JA-104,
Test Conditions B and N
Thermal ShockTest
Moisture Sensitivity Level
Solderability
IPC/JEDEC J-STD-020, Level 1
MIL-STD-202 Method 103, 85°C/85% RH
with 10% operating power for 1000 hrs
Biased Humidity
IPC/EIC/JEDEC J-STD-002, Condition C
MIL-STD-202, Method 103, Conditions D
MIL-STD-202, Method 210, Condition B
MIL-STD-202, Method 106
HumidityTest
Operational Life
MIL-STD-202 Method 108, Test Condition D
MIL-STD-202 Method 215
Resistance to Solder Heat
Moisture Resistance
ResistanceTo Solvents
Mechanical Shock
MIL-STD-202 Method 213, Test Condition C
High FrequencyVibration
MIL-STD-202, Method 204
Thermal Shock
MIL-STD-202, Method 107, Condition B
MIL-STD-202, Method 213, Condition A
MIL-STD-202, Method 201
ResistanceTo Soldering
Heat
Mechanical Shock
Vibration
MIL-STD-202 Method 210, Test Condition B
Solderability
JESD22-B102E Method 1
Vibration, High Frequency
MIL-STD-202, Method 204, Condition D
Terminal Strength For SMD AEC Q200-006
Dissolution of Metallization IPC/EIC/JEDEC J-STD-002, Condition D
Board Flex
AEC Q200-005
Terminal Strength
IEC 60127-4
Electrical Characterization
3Temperature Electrical Characterization
Dimensions
Part Marking System
1.575±±.15ꢀ2
[±.±6ꢀ2±2±.±±6ꢁ
Amp Code
Marking Code
.250
.375
.500
.750
001.
1.25
1.75
002.
02.5
003.
03.5
004.
005.
006.
D
E
±.852±2±.15±2
[±.±332±2±.±±6ꢁ
F
G
H
J
±.53±2+/-2±.15±2
[±.±ꢀ12+/-2±.±±6ꢁ
L
N
O
P
±.5±8±±.1±ꢀ
[±.±ꢀ±±.±±4ꢁ
R
S
T
U
Part Numbering System
±.43ꢀ2+/-2±.15±
[±.±172+/-2±.±±6ꢁ
0438 005. W R
A
±.6±
[±.±ꢀ4ꢁ
±.74
[±.±ꢀ9ꢁ
AEC-Q200 Qualified
Series
Packing Code
R = Reel Pack
Amp Code
1.±±
[±.±39ꢁ
Quantity Code
1.94
[±.±76ꢁ
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity & Packaging Code
8mmTape and Reel
EIA-481, IEC 60286, Part 3
3000
WR
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own
applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/19
相关型号：
04381.75WRA
Electric Fuse, Fast Blow, 1.75A, 32VAC, 32VDC, 50A (IR), Surface Mount, 0603,
LITTELFUSE
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