0438.750WRA [LITTELFUSE]
Electric Fuse, Fast Blow, 0.75A, 32VAC, 63VDC, 50A (IR), Surface Mount,;
| 型号： | 0438.750WRA |
| 厂家： | 
LITTELFUSE |
| 描述： | Electric Fuse, Fast Blow, 0.75A, 32VAC, 63VDC, 50A (IR), Surface Mount, 电路保护 |
| 文件： | 总4页 (文件大小：567K) |
| 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
• Suitable for both leaded
and lead-free reflow/wave
soldering
Agency Approvals
• 100% Lead-free, RoHS
compliant and Halogen-
free
• Meets Littelfuse's
Automotive qualifications*
AGENCY
AGENCY FILE NUMBER
E10480
AMPERE RANGE
0.250A – 6A
* Largely based on Littelfuse internal AECQ-200 test plan.
29862
0.250A – 6A
Applications
• Li-ion Battery
• TFT Display
Electrical Characteristics for Series
• LED Head-Lights
• Battery Management
System (BMS)
% of Ampere
• Automotive Navigation
System
Ampere Rating
OpeningTime at 25ºC
Rating
100%
250%
• Clusters
0.250A – 6A
0.250A – 6A
4 Hours, Minimum
Additional Information
5 Seconds, Maximum
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Electrical Specifications by Item
Agency Approvals
Ampere
Rating
(A)
Max.
Nominal
Nominal Nominal Voltage Nominal Power
Amp
Code
Interrupting Rating
Voltage
Resistance Melting I2t
Drop At Rated
Dissipation At
(AC/DC)1
Rating (V)
(Ohms)2
(A2Sec.)3
Current (V)4
Rated Current (W)
0.25
0.375
0.5
0.75
1
1.25
1.75
2
2.5
3
.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
32
32
32
32
32
24
2.218
1.247
0.829
0.466
0.310
0.200
1.405
0.0490
0.0364
0.0264
0.0210
0.0177
0.0127
0.0086
0.0017
0.0041
0.0100
0.0281
0.0593
0.0510
0.1440
0.181
0.240
0.439
0.647
0.730
0.747
1.444
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
50A @ 63VDC
50A @ 32VAC
50A@32VAC/32VDC
50A @ 32VDC/12VAC
50A @ 24VDC/12VAC
3.5
4
5
6
Notes:
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.
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 be mounted with marking code facing up.
3. Nominal Melting I²t measured at 1 msec. opening time.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 12/06/17
Surface Mount Fuses
Ceramic Fuse > 438A Series
Temperature Re-rating Curve
AverageTime Current Curves
140
120
100
80
100
10
1
60
40
-65 -45
-25
-5
15
35
55
75
95
115 135 155
ꢀꢁMꢂꢁꢃꢄꢀꢅꢃꢁ ꢆꢇꢈꢉ
0.1
Note:
1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for
continuous operation.
0.01
Example:
For continuous operation at 75 degrees celsius, the fuse should be rerated as follows:
I = (0.80)(0.85)IRAT = (0.68)IRAT
0.001
0.1
1
10
100
ꢄꢇꢈꢈꢂꢃꢀ ꢁꢃ ꢉMꢊꢂꢈꢂS
Soldering Parameters
tP
Reflow Condition
-Temperature Min (Ts(min)
Pb – free assembly
TP
Critical Zone
Ramp-up
TL to TP
)
150°C
TL
TS(max)
Pre Heat -Temperature Max (Ts(max)
)
200°C
tL
-Time (Min to Max) (ts)
60 – 180 seconds
Ramp-down
Average Ramp-up Rate (LiquidusTemp
(TL) to peak)
Preheat
3°C/second max.
5°C/second max.
TS(min)
tS
TS(max) toTL - Ramp-up Rate
-Temperature (TL) (Liquidus) 217°C
25
Reflow
time to peak temperature
(t 25ºC to peak)
-Temperature (tL)
60 – 150 seconds
260+0/-5 °C
Time
PeakTemperature (TP)
Time within 5°C of actual peak
Temperature (tp)
10 – 30 seconds
Ramp-down Rate
6°C/second max.
8 minutes max.
260°C
Time 25°C to peakTemperature (TP)
Do not exceed
Wave Soldering
260°C, 10 seconds max.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/06/17
Surface Mount Fuses
Ceramic Fuse > 438A Series
Product Characteristics
Body: Advanced Ceramic
Terminations: Ag/Ni/Sn (100% Lead-free)
High Temperature
Storage
MIL-STD-202 Method 108 with exemptions
Materials
Element Cover Coating: Lead-free Glass
Thermal Shock
Test
JESD22 Method JA-104,
Test Conditions B and N
Moisture
IPC/JEDEC J-STD-020, Level 1
Sensitivity Level
MIL-STD-202 Method 103, 85°C/85% RH
with 10% operating power for 1000 hrs
Biased Humidity
Operational Life
Solderability
HumidityTest
IPC/EIC/JEDEC J-STD-002, Condition C
MIL-STD-202, Method 103, Conditions D
MIL-STD-202 Method 108, Test Condition D
MIL-STD-202 Method 215
ResistanceTo
Solvents
Mechanical
Shock
High Frequency
Vibration
Resistance to
Solder Heat
Moisture
MIL-STD-202, Method 210, Condition B
MIL-STD-202, Method 106
MIL-STD-202 Method 213, Test Condition C
MIL-STD-202, Method 204
Resistance
MIL-STD-202, Method 107,
Condition B
Thermal Shock
Mechanical
Shock
ResistanceTo
Soldering Heat
MIL-STD-202, Method 213,
Condition A
MIL-STD-202 Method 210, Test Condition B
JESD22-B102E Method 1
Vibration
MIL-STD-202, Method 201
Solderability
Vibration,
High Frequency
Terminal
Strength For
SMD
MIL-STD-202, Method 204,
Condition D
AEC Q200-006
Dissolution of
Metallization
IPC/EIC/JEDEC J-STD-002,
Condition D
Board Flex
AEC Q200-005
Terminal
Strength
Electrical
Characterization
IEC 60127-4
3Temperature Electrical Characterization
Dimensions
Part Marking System
1.575±±.152
[±.±62 ± ±.±±6]
Amp Code Marking Code
.250
.375
.500
.750
001.
1.25
1.75
002.
02.5
003.
03.5
004.
005.
006.
D
E
±.85 ± ±.15±
[±.±33 ± ±.±±6]
F
G
H
J
±.53± +/- ±.15±
[±.±21 +/- ±.±±6]
L
N
O
P
±.5±8±±.1±2
[±.±2±±.±±4]
R
S
T
U
±.432 +/- ±.15±
[±.±17 +/- ±.±±6]
Part Numbering System
±.6±
[±.±24]
±.74
[±.±29]
0438 005. W R
A
AEC-Q200 QUALIFIED
SERIES
1.±±
[±.±39]
PACKING CODE
R = Reel Pack
AMP CODE
QUANTITY CODE
W = 3000 pcs
1.94
[±.±76]
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/06/17
Surface Mount Fuses
Ceramic Fuse > 438A Series
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.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/06/17
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