© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/26/15
Axial Lead & Cartridge Fuses
PICO® ll > Slo-Blo® Fuse > 472 Series
472 Series, PICO® II Time-Lag Fuse
Description
The 472 Series PICO® II, 125V rated Slo-Blo® Fuse is
designed for applications that require moderate in-rush
withstand and is in a space-saving subminature package.
Agency Approvals
Agency Agency File Number Ampere Range
E10480 0. 50A - 5A
Features
Electrical Characteristics
Applications
RoHS
% of Ampere
Rating Opening Time
100% 4 Hours, Min.
200% 120 Seconds, Max.
Ampere Rating
(A) Amp Code
Max
Voltage Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal Melting
I2t (A2 sec)
Agency
Approvals
.500 .500 125
50A@125VAC/DC
0.1745 0.1927 x
1. 0 0 0 01. 125 0.0785 0.9384 x
1.50 01. 5 125 0.0392 2.4081 x
2.00 002. 125 0.0271 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
Electrical Characteristics
• Moderate in–rush
withstand
• Small size
• Wide range of current
ratings available (0. 50A
to 5A)
• RoHS compliant and
Halogen-free
• Wide operating
temperature range
• Low temperature
rerating
• Flat–panel display TV
• Lighting
• Game Console
• Power Supply
• Audio/Video Equipment
Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/26/15
Axial Lead & Cartridge Fuses
PICO® ll > Slo-Blo® Fuse > 472 Series
Average Time Current CurvesTemperature Re-rating Curve
Soldering Parameters
Wave Parameter Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100°C
Temperature Maximum: 150°C
Preheat Time: 60-180 seconds
Solder Pot Temperature: 260°C Maximum
Solder Dwell Time: 2-5 seconds
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.
Recommended Process Parameters:
100
10
1
0.1
0.01
0.001
0.1 110100 1
000
0.5A
1.0A
1.5A
2.0A
2.5A
3.0A
5.0A
TIME IN SECONDS
CURRENT IN AMPERES
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/26/15
Axial Lead & Cartridge Fuses
PICO® ll > Slo-Blo® Fuse > 472 Series
Material
Body: Ceramic
Leads: Tin-coated Copper
Encapsulated: Epoxy-Coated Body
Product Marking Body: Brand Logo, Current Rating,
T (time Lag fuse)
Solderability MIL-STD-202, Method 208
Lead Pull Force MIL-STD-202, Method 211, Test Condition
A (will Withstand a 7lbs. Axial pull test)
Product Characteristics
Operating
Temperature –55ºC to +125ºC with proper de–rating
Thermal Shock MIL-STD-202, Method 213, Test Condition I
(100 G’s peak for 6 milliseconds)
Vibration
MIL-STD-202, Method 201 (10-55 Hz); Method
204, Test Condition C (55-2000 Hz at 10 G’s
Peak)
Dimensions
Packaging
Part Numbering System
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code
*T1: 52.4mm (2.062”)
Tape and Reel EIA 296 Refer to the tables in
Part Numbering System above
F
L
1 A
T 2A
27.78
(1.094")
27.78
(1.094")
7.11 (.280")
62.7 (2.468")
52.4 (2.062")*
472 series markings
0.64 (.025") 2.80 (.11")
6.35 (.25")
tape
5.0 (.197")
6.35 (.25")
tape
Drawing ES-001148
Coating Diameter (max): 0.5A-3.0A: 2.80mm
5.0A: 2.90mm
0472 xxxx N R T1 L
RoHS + HF
Lead Length
Type of Packaging
Quantity
Current Rating
Series
T1: 52.4mm (2.062”)*
R = Reel
A = Ammo Pack
X = Loose Pack
N = 5000
M = 1000
Refer to Amp Code column of
Electrical Characteristics Table
Notes: * T1 dimension is defined as the length of the component between the two tapes. The full component length is 62.7mm (2.468").
