Mount Fuses. 438GT Datasheet

438GT Fuses. Datasheet pdf. Equivalent

438GT Datasheet
Recommendation 438GT Datasheet
Part 438GT
Description Surface Mount Fuses
Feature 438GT; Surface Mount Fuses Ceramic Fuse > 438GT Series 438GT Series – 0603 Fast-Acting Fuse RoHS Pb Agenc.
Manufacture Littelfuse
Datasheet
Download 438GT Datasheet





Littelfuse 438GT
Surface Mount Fuses
Ceramic Fuse > 438GT Series
438GT Series – 0603 Fast-Acting Fuse
RoHS Pb
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
29862
AMPERE RANGE
2A – 6A
2A – 6A
Electrical Characteristics for Series
% of Ampere
Rating
100%
250%
Ampere Rating
2A – 6A
2A – 6A
OpeningTime at 25ºC
4 Hours, Minimum
5 Seconds, Maximum
Description
The 438GT Series is a 100% Lead-free, RoHS compliant
and Halogen-free fuse series designed specifically to
provide over-current protection to circuits that operate
under high working ambient temperature up to 150ºC.
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
• Operating Temperature
from -55ºC to +150ºC
• 100% Lead-free,
RoHS compliant and
Halogen-free
Applications
• Handheld Electronics
• LCD Displays
• Battery Packs
• Suitable for both leaded
and lead-free reflow/
wave soldering
• Hard Disk Drives
• SD Memory Cards
Additional Information
Datasheet
Resources
Samples
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code
Max.
Voltage
Rating (V)
Interrupting Rating
(AC/DC) 1
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.
2.5 02.5
3 003.
3.5 03.5
4 004.
5 005.
6 006.
32
32
32
32
32
32
24
50A @ 32VDC/12VAC
50A @ 24VDC/12VAC
0.0490
0.0364
0.0264
0.0210
0.0164
0.0127
0.0086
0.181
0.240
0.439
0.647
0.739
0.747
1.444
0.110
0.094
0.082
0.078
0.075
0.072
0.070
0.220
0.235
0.246
0.273
0.300
0.360
0.420
xx
xx
xx
xx
xx
xx
xx
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
Re-rating Curve”for additional re-rating information.
Devices designed to be mounted with marking code facing up.
© 2018 Littelfuse, Inc.
Specifications are subject to change without nSoptieccei.fiAcaptpiolincsataioren steusbtjiencgtitsosctrhoanngglye rweicthoomumt ennodtiecde.
Revised: 02/15/18



Littelfuse 438GT
Surface Mount Fuses
Ceramic Fuse > 438GT Series
Temperature Re-rating Curve
140
120
100
80
60
40
-65 -45 -25
-5
15 35 55 75 95 115 135 155
TEMPERATURE (°C)
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
Average Time Current Curves
100
10
1
0.1
0.01
Soldering Parameters
Reflow Condition
Pb – free assembly
- Temperature Min (Ts(min))
Pre Heat - Temperature Max (Ts(max))
- Time (Min to Max) (ts)
Average Ramp-up Rate (LiquidusTemp
(TL) to peak)
TS(max) to TL - Ramp-up Rate
Reflow
-Temperature (TL) (Liquidus)
- Temperature (tL)
Peak Temperature (TP)
Time within 5°C of actual peak
Temperature (tp)
Ramp-down Rate
Time 25°C to peakTemperature (TP)
Do not exceed
150°C
200°C
60 – 180 seconds
3°C/second max.
5°C/second max.
217°C
60 – 150 seconds
260+0/-5 °C
10 – 30 seconds
6°C/second max.
8 minutes max.
260°C
Wave Soldering
260°C, 10 seconds max.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/15/18
0.001
0.1
1 10
CURRENT IN AMPERES
100
TP
TL
TS(max)
Ramp-up
TS(min)
25
Preheat
tS
time to peak temperature
(t 25ºC to peak)
tP
Critical Zone
TL to TP
tL
Ramp-down
Time



Littelfuse 438GT
Surface Mount Fuses
Ceramic Fuse > 438GT Series
Product Characteristics
Materials
Body: Advanced Ceramic
Terminations: Ag / Ni / Sn (100% Lead-free)
Element Cover Coating: Lead-free Glass
Moisture
Sensitivity Level
IPC/JEDEC J-STD-020, Level 1
Solderability
IPC/EIC/JEDEC J-STD-002, Condition B
Humidity
Resistance to
Solder Heat
MIL-STD-202, Method 103, Conditions D
MIL-STD-202, Method 210, Condition B
Dimensions
1.582 ± 0.152
[0.062 ± 0.006]
0.83 ± 0.152
[0.032 ± 0.006]
0.508 ± 0.102
[0.02 ± 0.004]
0.432 +/- 0.150
[0.017 +/- 0.006]
0.60
[0.024]
1.00
[0.039]
0.74
[0.029]
Moisture Resistance
Thermal Shock
Mechanical Shock
Vibration
Vibration,
High Frequency
Dissolution of
Metallization
Terminal Strength
MIL-STD-202, Method 106
MIL-STD-202, Method 107,
Condition B-3
MIL-STD-202, Method 213,
Condition A
MIL-STD-202, Method 201
MIL-STD-202, Method 204,
Condition D
IPC/EIC/JEDEC J-STD-002,
Condition D
IEC 60127-4
Part Marking System
Amp Code
002.
02.5
003.
03.5
004.
005.
006.
Marking Code
N
O
P
R
S
T
U
Part Numbering System
0438 005. W R GT
SERIES
AMP CODE
PACKING CODE
R = Reel Pack
QUANTITY CODE
W = 3000 pcs
Packaging
Packaging Option
8mm Tape and Reel
1.94
[0.076]
Packaging Specification
EIA-481, IEC 60286, Part 3
Quantity
3000
Quantity &
Packaging Code
WR
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently eval-
uate 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.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/15/18





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