Surface Mount Fuses
Thin-Film Surface Mount
SlimLine
™
0603
Very Fast-Acting Fuse 434 Series
• For RoHS compliant and Lead-Free designs use 467 series.
• The SlimLine 0603 fuse is an extremely small, low profile design
(0603 chip size) utilizing thin-film technology to achieve precise control
of electrical characteristics.
• The lower height profile produces a flat surface for improved
performance in pick-and-place operations and an alternate solution for
height critical applications.
®
®
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
300%
Opening
Time at 25
°
C
4 hours,
Minimum
5 seconds,
Maximum
0.2 seconds,
Maximum
Reference Dimensions:
1.60
(.063")
.127
(.005")
Sn/Pb
.254 (.010")
.305
(.012")
AGENCY APPROVALS:
Recognized under the Components
Program of Underwriters Laboratories and Certified by CSA.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
.25–1A
1.25–5A
50 A @ 32 V AC/DC
35 A @ 32 V AC/DC
.813
(.032")
Cu
.279
(.011")
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Sn/Pb
Sn/Pb
Coating
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature:
–55°C to 90°C. Consult temperature
rerating chart on page 4. For operation above 90°C contact Littelfuse.
Vibration:
Per MIL-STD-202F.
Insulation Resistance (After Opening):
Greater than
10,000 ohms.
Resistance To Soldering Heat:
Withstands 60 seconds above
200°C up to 260°C, maximum.
Thermal Shock:
Withstands 5 cycles of –55°C to 125°C.
1.09
(.043")
1.02
(.040")
3.20
(.126")
2.54
(.100")
1.02
(.040")
.762
(.030")
PHYSICAL SPECIFICATIONS:
Materials:
Body: Epoxy Substrate
Terminations: Copper/Nickel/Tin-Lead (95/5)
Cover Coat: Conformal Coating
1.09
(.043")
WAVE SOLDER
1.09
(.043")
REFLOW SOLDER
Soldering Parameters(see page 3 for typical soldering profile):
Wave Solder — 260°C, 10 seconds maximum
Reflow Solder— 260°C, 30 seconds maximum
PACKAGING SPECIFICATIONS:
8mm Tape and Reel per EIA-
RS481-1 (IEC 286, part 3); 5,000 per reel, add packaging suffix, NR.
Average Time Current Curves
.25A
.375A
.5A
.68A
.75A
1A
1.5A
2A
2.5A
3A
3.5A
4A
5A
100
10
TIME IN SECONDS
1
0.1
0.01
0.001
0.1
1
10
CURRENT IN AMPERES
100
PATENTED:
ORDERING INFORMATION:
Catalog
Number
0434.250
0434.375
0434.500
0434.680
0434.750
0434
001.
0434
1.25
0434
01.5
0434
1.75
0434
002.
0434
02.5
0434
003.
0434
03.5
0434
004.
0434
005.
1
Ampere
Rating
.25
.375
.5
.68
.75
1
1.25
1.5
1.75
2
2.5
3
3.5
4
5
Marking
Code
D
E
F
X
G
H
J
K
L
N
O
P
R
S
T
Voltage
Rating
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
Nominal
Resistance
Cold Ohm
1
0.375
0.265
0.193
0.125
0.114
0.072
0.054
0.048
0.039
0.036
0.028
0.023
0.019
0.017
0.013
Melting I
2
t
(A
2
Sec.)
2
0.0030
0.0053
0.0087
0.0109
0.0171
0.0210
0.0320
0.0526
0.0661
0.104
0.175
0.198
0.265
0.352
1.297
Measured at 10% of rated current, 25°C.
2
Measured at rated voltage.
372
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