Surface Mount Fuses
PICO
®
SMF Fuse > 460 Series
460 Series PICO
®
Slo-Blo
®
Surface Mount Fuse
Description
PS
E
The 460 Series Slo-Blo
®
SMF is based on Littelfuse PICO
®
fuse through-hole technology, though offered in a surface
mount package.
This series of devices meets the requirements of the
RoHS directive.
Features
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
LR29862
PS
E
AMPERE RANGE
0.375A - 5A
0.375A - 5A
1A - 5A
Applications
NBK181103-E10480
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
300%
800%
Opening Time
4 hours, Minimum
1 second, Min.; 120 seconds, Max.
0.2 second, Min.; 3 seconds, Max.
0.02 second, Min.; 0.1 second, Max.
Electrical Specifications by Item
Ampere
Rating
(A)
0.375
0.500
0.750
1.00
1.50
2.00
2.50
3.00
3.50
4.00
5.00
Amp
Code
.375
.500
.750
001.
01.5
002.
02.5
003.
03.5
004.
005.
Max
Voltage
Rating
(V)
125
125
125
125
125
125
125
125
125
125
125
50 A @125 VDC
50 A @125 VAC
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
1.7400
1.1900
0.4970
0.2800
0.1160
0.0710
0.0520
0.0380
0.0240
0.0194
0.0133
Nominal Melting
I
2
t (A
2
sec)
0.085
0.210
0.760
2.01
3.94
7
.60
13.0
21.0
26.8
35.0
54.8
x
x
x
x
x
x
x
x
x
x
x
Agency Approvals
PS
E
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/460.html for current information.
111
Revised: August 4, 2009
460 Series
460 Series
Surface Mount Fuses
Introduction to Circuit Protection
Transientology
PICO
®
SMF Fuse > 460 Series
Temperature Rerating Curve
Average Time Current Curves
.375A
.500A
.750A
1A
1.5A
2A
2.5A
3A
3.5A
4A
5A
1000
100
TIME IN SECONDS
10
1
0.1
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
0.01
0.05 0.1
1
10
100
1000
CURRENT IN AMPERES
Soldering Parameters
Wave Soldering
Reflow Soldering
260°C, 3 seconds max.
230°C, 30 seconds max.
460 Series
112
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/460.html for current information.
Surface Mount Fuses
PICO
®
SMF Fuse > 460 Series
Product Characteristics
Materials
Solderability
Product Marking
Moisture
Sensitivity Level
Body:
Molded Thermoplastic
Terminations:
100% Tin-plated Copper
(460 Series)
MIL-STD-202, Method 208
Body:
Brand Logo, Current Rating, Voltage
Rating, Series Code, Date Code, Agency
Approved Logo
Level 1 J-STD - 020C
Operating Temperature
Shock
Vibration
Salt Spray
Insulation Resistance
(After Opening)
Thermal Shock
Moisture Resistance
–55°C to 125°C
MIL
-STD-202, Method 213, Test
Condition I
(100 G’s peak for 6 msecs.)
MIL
-STD-202, Method 201 (10–55
Hz, 0.06 inch total excursion)
MIL
-STD-202, Method 101, Test
Condition B (48 hours)
MIL
-STD-202, Method 302, (10,000
ohms minimum at 100 volts)
MIL
-STD-202, Method 106, High
Humidity (90-98 RH), Heat (65°C)
Dimensions
5A
F
L
®
®
Part Numbering System
1 25 V
46 0
B3
0460 .500 UR
4.32
(.170")
2.03
(.080")
3.05
(.120")
1.65
(.065")
8.26
(.325")
2.97
(.117")
4.95
(.195")
RECOMMENDED
PAD LAYOUT
SERIES
AMP CODE
Refer to Electrical
Characteristics table
7.24(.285")
REF.
QUANTITY CODE
UR =
500
pcs
ER = 2500 pcs
Example:
1 Amp product is
0460
.001
UR (.5 Amp
1.30(.051")
REF.
PACKAGING CODE
R = Tape and Reel
Packaging
Packaging Option
12mm Tape and Reel
12mm Tape and Reel
Packaging Specification
EIA RS-481-1 (IEC 286, part 3)
EIA RS-481-1 (IEC 286, part 3)
Quantity
500
2500
Quantity &
Packaging Code
UR
ER
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/460.html for current information.
113
460 Series
460 Series
MIL
-STD-202, Method 107
,
Test Condition B (–65°C to 125°C)
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