Littelfuse 472 User Manual
Axial Lead & Cartridge Fuses
PICO® ll > Time-Lag > 472 Series
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
Agency Approvals
Agency Agency File Number Ampere Range
E10480 500mA - 5A
Additional Information
Datasheet
Resources
Samples
Electrical Characteristics
Ampere Rating
(A)
Amp Code
Max
Voltage Rating
(V)
Interrupting
Rating
•Moderatein–rush
withstand
• RoHScompliant
• Wideoperating
• Smallsize
• Widerangeofcurrent
• Lowtemperature
ratings available (500mA
to 5A)
Applications
• Flat–paneldisplayTV
• Lighting
• PowerSupply
• Audio/VideoEquipment
• GameConsole
Electrical Characteristics
% of Ampere
Rating
100% 4 Hours, Min.
200% 120 Seconds, Max.
Nominal Cold
Resistance
(Ohms)
Nominal Melting
Opening Time
2
t (A2 sec)
I
temperature range
de-rating
Agency
Approvals
.500 .500 125
1. 0 0 001. 125 0.078 0.9384 x
1.50 01. 5 125 0.039 2.4081 x
2.00 002. 125 0.027 4.2363 x
2.50 02.5 125 0.0209 7.0838 x
3.00 003. 125 0.0187 9.3600 x
5.00 005. 125 0.0084 45.9000 x
50 amperes at
125 VAC and VDC
0.174 0.1927 x
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
000
0.5A
.0A1.5A
2.0A
2.5A
3.0A
5.0A
TIME IN SECONDS
PICO® ll > Time-Lag > 472 Series
Average Time Current CurvesTemperature Rerating Curve
Note:
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 Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature)
Temperature Minimum:
Temperature Maximum:
Preheat Time: 60-180 seconds
Solder Pot Temperature:
Solder Dwell Time: 2-5 seconds
(Typical Industry Recommendation)
100
° C
150
° C
260
° C Maximum
100
10
1
0.1
0.01
0.001
0.1 110100 1
1
CURRENT IN AMPERES
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
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