Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
473 Series,
PICO
®
II, Slo-Blo
®
Fuse
PS
E
Description
The PICO
®
II Slo-Blo
®
Fuse combines time-delay
performance characteristics with the proven reliability of
a PICO
®
Fuse.
Features
withstand
Agency Approvals
Applications
Agency
Agency File Number
Ampere Range
E10480
LR 29862
PS
E
375mA - 7A
375mA - 7A
1A - 5A
JET 1896-31007-1001
Electrical Characteristics
% of Ampere
Rating
100%
200%
300%
800%
Min.
Min.
Min.
Opening Time
Min.
Max.
Max.
Max.
Electrical Characteristics
Ampere
Rating
(A)
0.375
0.500
0.750
1.00
1.50
2.00
2.25
2.50
3.00
3.50
4.00
5.00
7.00
Max
Voltage
Rating
(V)
125
125
125
125
125
125
125
125
125
125
125
125
125
Nominal Cold
Resistance
(Ohms)
1.7400
1.1300
0.4600
0.3000
0.1160
0.0712
0.0630
0.0520
0.0380
0.0240
0.0194
0.0133
0.0092
Nominal
Melting
I
2
t (A
2
sec)
0.085
0.210
0.760
2.010
3.940
7.600
9.280
13.00
21.00
26.80
35.00
54.80
105.00
Nom
Voltage Drop
(mV)
0.840
0.775
0.429
0.353
0.208
0.180
0.164
0.153
0.140
0.094
0.086
0.074
0.070
X
X
X
X
X
X
X
X
X
X
X
X
X
Agency Approvals
PS
E
Amp
Code
.375
.500
.750
001.
01.5
002.
2.25
02.5
003.
03.5
004.
005.
007.
Interrupting
Rating
50 amperes at 125 VDC/
VAC
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/473.html for current information.
Revised: April 24, 2011
473 Series
473 Series
Introduction to & Cartridge Fuses
Axial Lead Circuit Protection
®
PICO
®
ll > Slo-BloTransientology
> 473 Series
Temperature Rerating Curve
Average Time Current Curves
1000
100
TIME IN SECONDS
10
1
continuous operation.
0.1
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
0.01
0.1
1
10
100
CURRENT IN AMPERES
1000
Recommended Hand-Solder Parameters:
Note: These devices are not recommended for IR or
Convection Reflow process.
.375A
.50A
.75A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
7.0A
473 Series
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/473.html for current information.
Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
Product Characteristics
Materials
Solder Coated Copper wire leads;
Copper wire leads
Vibration
Solderability
Lead Pull Force
Operating
Temperature
Shock
º
Salt Spray
Insulation Resistance
(After Opening):
Resistance to Soldering
Heat
Thermal Shock
Moisture Resistance
Condition B
Dimensions
62.7 (2.468")
27.78
(1.094")
0.64 (.025")
52.4 (2.062")*
7.11 (.280")
27.78
(1.094")
3.43 (.135")
MAX
Part Numbering System
0473 xxxx Y R T1 L
Series
Current Rating
6.35 (.25")
tape
F
L
1A
6.35 (.25")
tape
5.0 (.197")
Refer to Amp Code column of
Electrical Characteristics Table
Quantity
Y = 4000
P = 2000
M = 1000
F
L
1A
473 series markings
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
Lead Length
T1: 52.4mm (2.062”)*
RoHS + HF
Packaging
Packaging Option
Packaging Specification
EIA 296
Quantity &
Packaging Code
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/473.html for current information.
473 Series
473 Series
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