Cartridge and Axial Lead Fuses
PICO
®
II > Time Lag > 472 Series
RoHS
472 Series,
PICO
®
II, Time-Lag Fuse
Description
The 472 Series PICO
®
II, 125V rated time-Lag fuse is
designed for applications that require moderate in-rush
withstand and is in a space-saving subminature package.
Features
withstand
temperature range
ratings available (500mA
to 5A)
Ampere Range
de-rating
Agency Approvals
Agency
Agency File Number
E10480
500mA - 5A
Applications
Electrical Characteristics
% of Ampere
Rating
100%
200%
Opening Time
4 Hours,
Min.
120 Seconds,
Max.
Electrical Characteristics
Max
Voltage Rating
(V)
125
125
125
125
125
125
125
50 amperes at
125 VAC and VDC
Nominal Cold
Resistance
(Ohms)
0.174
0.078
0.039
0.027
0.0209
0.0187
0.0084
Agency
Approvals
Ampere Rating
(A)
.500
1.00
1.50
2.00
2.50
3.00
5.00
Amp Code
.500
001.
01.5
002.
02.5
003.
005.
Interrupting
Rating
Nominal Melting
I
2
t (A
2
sec)
0.1927
0.9384
2.4081
4.2363
7.0838
9.3600
45.9000
x
x
x
x
x
x
x
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Revised: January 12, 2009
472 Series
Cartridge and Axial Lead Fuses
PICO
®
II > Time Lag > 472 Series
Temperature Rerating Curve
Average Time Current Curves
0.5A
1.0A
1.5A
2.0A
2.5A
3.0A
100
10
TIME IN SECONDS
1
0.1
0.01
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Preheat:
100
°
C
150
°
C
60-180 seconds
Solder Pot Temperature:
Solder Dwell Time:
260
°
2-5 seconds
Lead-Free Recommendation
0.001
0.1
1
10
CURRENT IN AMPERES
5.0A
100
1000
Recommended Hand-Solder Parameters:
Note: These devices are not recommended for IR or
Convection Reflow process.
472 Series
Revised: January 12, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Cartridge and Axial Lead Fuses
PICO
®
II > Time Lag > 472 Series
Product Characteristics
Operating
Temperature
Thermal Shock
Product Marking
Solderability
Lead Pull Force
T (time Lag fuse)
Vibration
Peak)
Material
Dimensions
472 Series (RoHS Version) Markings
62.7 (2.468")
27.78
(1.094")
0.64 (.025")
52.4 (2.062")*
7.11 (.280")
27.78
(1.094")
2.80 (.11")
Part Numbering System
0472 xxxx N R T1 L
Series
Current Rating
6.35 (.25")
tape
1A
6.35 (.25")
tape
5.0 (.197")
F
L
Refer to Amp Code column of
Electrical Characteristics Table
T
1A
Quantity
N = 5000
M = 1000
Coating Diameter (max): 0.5A-3.0A: 2.80mm
5.0A: 2.90mm
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
472 Series (RoHS and Halogen-free Version) Markings
62.7 (2.468")
27.78
(1.094")
0.64 (.025")
52.4 (2.062")*
7.11 (.280")
27.78
(1.094")
2.80 (.11")
Lead Length
T1: 52.4mm (2.062”)*
F
L
6.35 (.25")
tape
5.0 (.197")
1A
Option Codes
6.35 (.25")
tape
T
1A
L = RoHS
HF = RoHS and Halogen-free
Coating Diameter (max): 0.5A-3.0A: 2.80mm
5.0A: 2.90mm
Packaging
Packaging Option
Packaging Specification
EIA 296
Quantity
Quantity &
Packaging Code
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Revised: January 12, 2009
472 Series
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