431 Datasheet, PDF (1/1 Pages) Littelfuse – Surface Mount Fuses - Thin-Film Surface Mount

Surface Mount Fuses
Thin-Film Surface Mount
0603 Very Fast-Acting Fuse 431 Series
®
®
• For new designs please use the 434 or 467 Series products.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
Opening
Time at 25°C
100%
4 hours, Minimum
200%
5 seconds, Maximum
300%
0.2 seconds, Maximum
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
50 amperes at 32 VAC/VDC
1–5A
35 amperes at 32 VAC/VDC
ENVIRONMENTAL SPECIFICATIONS:
Reference Dimensions:
1.60 (.063")
.79
(.031")
Operating Temperature: –55°C to 90°C. Consult temperature
rerating chart on page 4. For operation above 90°C contact Littelfuse.
Vibration: Withstands 10-55 HZ per MIL-STD-202F, Method 201A
and 10-2000 HZ at 20 G’s per MIL-STD-202F, Method 204D, Condition D.
Insulation Resistance (After Opening):
Greater than 500,000 ohms.
2.54
(.100")
1.02 (.040")
R .20 (.008")
.76 (.030")
1.09 (.043")
REFLOW SOLDER
1.04
(.041")
.43 (.017") REF.
.46 (.018")
Resistance To Soldering Heat: Withstands 60 seconds above
200°C up to 260°C, maximum.
Thermal Shock: Withstands 5 cycles of –50°C to 125°C.
PHYSICAL SPECIFICATIONS:
E Materials: Body: Epoxy Substrate
Terminations: Copper/Nickel/Tin-Lead (95/5)
Cover Coat: Conformal Coating
T Soldering Parameters:
Reflow Solder— 260°C, 30 seconds maximum
PACKAGING SPECIFICATIONS: 8mm Tape and Reel per
E EIA-RS481-1 (IEC 286, part 3); 5,000 per reel, add packaging suffix, NR.
PATENTED
L ^{ORDERING INFORMATION:}
For New Designs Use 434 or 467 Series.
Catalog
O _Number
Ampere
Rating
Voltage
Rating
Nominal
Resistance
Cold Ohm¹
Melting I²t
(A² Sec.)
431.250
0.25
32
431.375
0.375
32
431.500
0.5
32
S _431.750
0.75
32
431 001
1
32
431 01.5
1.5
32
431 002
2
32
B _{431 02.5}
2.5
32
431 003
3
32
431 03.5
3.5
32
431 004
4
32
O ^{431 005}
5
32
0.375
0.265
0.193
0.114
0.072
0.048
0.036
0.028
0.023
0.019
0.017
0.013
0.0030
0.0053
0.0087
0.0171
0.0210
0.0526
0.104
0.175
0.198
0.265
0.352
1.600
.36 (.014")
Average Time Current Curves
100
10
1
0.1
0.01
10
1_{Measured at 10% of rated current, 25°C.}
0.001
0.1
1
10
100
CURRENT IN AMPERES
369
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