Cartridge and Axial Lead Fuses
PICO
®
II > Time Lag > 472 Series
RoHS
472 Series
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
Applications
E10480
500mA - 5A
Electrical Characteristics
% of Ampere
Rating
100%
200%
Opening Time
4 hours, Minimum
120 seconds, Maximum
Electrical Characteristics
Ampere
Rating
(A)
.500
1.00
1.50
2.00
2.50
3.00
5.00
Max
Voltage
Rating
(V)
125
125
125
125
125
125
125
50 amperes at
125 VAC and VDC
Nominal Cold Nominal
Resistance
Melting
(Ohms)
I
2
t (A
2
sec)
0.174
0.078
0.039
0.027
0.0209
0.0187
0.0084
0.1927
0.9384
2.4081
4.2363
7
.0838
9.3600
45.9000
Agency
Approvals
®
Amp Code
.500
001.
01.5
002.
02.5
003.
005.
Interrupting
Rating
x
x
x
x
x
x
x
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
13
Revised: July 28, 2008
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
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Preheat:
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
280
°
C Maximum
2-5 seconds
Lead-Free Recommendation
0.001
0.1
1
10
CURRENT IN AMPERES
100
1000
Recommended Hand-Solder Parameters:
Note: These devices are not recommended for IR or
Convection Reflow process.
5.0A
472 Series
14
Revised: July 28, 2008
©2008 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
Material
Operating
Temperature
Thermal Shock
Product Marking
Solderability
Lead Pull Force
T (time lag fuse)
Vibration
Peak)
Dimensions
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
2A
Quantity
N = 5000
M = 1000
472 series markings
Coating Diameter (max): 0.5A-3.0A: 2.80mm
5.0A: 2.90mm
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
Lead Length
T1: 52.4mm (2.062”)*
RoHS
Packaging
Packaging Option
*T1: 52.4mm (2.062”)
Packaging Specification
EIA 296
Quantity
Quantity &
Packaging Code
Notes: * T1 dimension is defined as the length of the component between the two tapes. The full component length is 62.7mm (2.468").
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
15
Revised: July 28, 2008
472 Series
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