Surface mount fuses, Pico, Smf fuse > 459 series – Littelfuse 459 Series User Manual
Page 2
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Surface Mount Fuses
PICO
®
SMF Fuse > 459 Series
Materials
Body: Molded Thermoplastic
Terminations: 100% Tin-plated Copper
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 1 J-STD - 020C
Operating Temp.
–55
O
C to 125
O
C
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)
Product Characteristics
4.32
(.170")
5 A 1 2 5 V
LF
4 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
Part Numbering System
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
product shown above).
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
Note:
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.
Packaging
packaging
Option
packaging
Specification
Quantity
Quantity &
packaging Code
12mm
Tape and Reel
EIA RS-481-1
(IEC 286, part 3)
500
UR
2500
ER