© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
459 Series
PICO® SMF Fuse > 459 Series
Please refer to www.littelfuse.com/series/459.html for current information.
459 Series
459 Series PICO® Very Fast-Acting Surface Mount Fuse
Description
Electrical Characteristics for Series
Features
% of Ampere
Rating Opening Time
100% 4 hours, Minimum
200% 1 second, Maximum
300% 0.1 second, Maximum
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance (Ohms)
Nominal Melting
I2t (A2sec)
Agency Approvals
PS
E
0.062 .062 125
50 A @125 VAC
300 A @125 VDC
7.0000 0.000075 x x
0.125 .125 125 1.7000 0.00163 x x
0.250 .250 125 0.6650 0.0106 x x
0.375 .375 125 0.3950 0.0254 x x
0.500 .500 125 0.2800 0.0546 x x
0.750 .750 125 0.1750 0.155 x x
1.00 001. 125 0.1250 0.281 x x x
1.50 01.5 125 0.0800 0.650 x x x
2.00 002. 125 0.0468 0.421 x x x
2.50 02.5 125 0.0350 0.721 x x x
3.00 003. 125 0.0290 1.23 x x x
3.50 03.5 125 0.0240 1.65 x x x
4.00 004. 125 0.0200 2.35 x x x
5.00 005. 125 0.0155 3.90 x x x
The 459 Series Very Fast-Acting SMF is based on Littelfuse
PICO® fuse technology, though offered in a surface mount
package.
This series of devices meets the requirements of the
RoHS directive.
Applications
t7FSZ'BTU"DUJOH
t8JEFDVSSFOUSBUJOHSBOHFN"UP"
t8JEFPQFSBUJOHUFNQFSBUVSFSBOHF
t-PXUFNQFSBUVSFSFSBUJOH
t3P)4DPNQMJBOU
t 8JSFMFTTCBTFTUBUJPO
t /FUXPSLFRVJQNFOU
t 5FMFDPNFRVJQNFOU
Revised: April 24, 2012
PS
E
Agency Approvals
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 62mA - 5A
LR29862 62mA - 5A
PS
ENBK030205-E10480B 1A - 5A
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
459 Series
PICO® SMF Fuse > 459 Series
Please refer to www.littelfuse.com/series/459.html for current information.
Materials
Body: Molded Thermoplastic
Terminations: 100% Tin-plated Copper
(459 Series)
Solderability MIL-STD-202, Method 208
Product Marking
Body: Brand Logo, Current Rating, Voltage
Rating, Series Code, Date Code, Agency
Approved Logo
Moisture
Sensitivity Level Level 1 J-STD - 020C
Operating
Temperature –55OC to 125OC
Product Characteristics
Shock MIL-STD-202, Method 213, Test
Condition I (100 G’s peak for 6 msecs.)
Vibration MIL-STD-202, Method 201
(10–55 Hz, 0.06 inch total excursion)
Salt Spray MIL-STD-202, Method 101,
Test Condition B (48 hours)
Insulation Resistance
(After Opening)
MIL-STD-202, Method 302,
(10,000 ohms minimum at 100 volts)
Thermal Shock MIL-STD-202, Method 107,
Test Condition B (–65 to 125°C)
Moisture Resistance MIL-STD-202, Method 106, High
Humidity (90-98 RH), Heat (65°C)
Average Time Current Curves
100
10
1
0.1
0.01
0.001
.062A
0.05 0.1 1 10 100
.125A
.25A
.375A
.500A
.750A
1A
1.5A
2A
2.5A
3A
3.5A
4A
5A
TIME IN SECONDS
CURRENT IN AMPERES
Soldering Parameters
Temperature Rerating Curve
/PUF
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
Wave Soldering 260°C, 10 seconds max.
Reflow Soldering 260°C, 30 seconds max.
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
459 Series
PICO® SMF Fuse > 459 Series
Please refer to www.littelfuse.com/series/459.html for current information.
459 Series
4.32
(.170")
5 A 1 2 5 V
L
F4 5 9
B 3
®®
3.05
(.120")
2.97
(.117")
7.24(.285")
REF.
8.26
(.325")
1.65
(.065")
4.95
(.195")
1.30(.051")
REF.
2.03
(.080")
RECOMMENDED
PAD LAYOUT
Dimensions
Packaging
Part Numbering System
Packaging
Option
Packaging
Specification Quantity Quantity &
Packaging Code
12mm
Tape and Reel
EIA RS-481-1
(IEC 286, part 3) 500 UR
12mm
Tape and Reel
EIA RS-481-1
(IEC 286, part 3) 2500 ER
0459 .500 UR
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
Refer to Electrical
Characteristics table
UR = 500 pcs
ER = 2500 pcs
R = Tape and Reel
Example:
0.62 Amp product is
0459 .062 UR (.5 Amp
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