Cartridge and Axial Lead Fuses
PICO
®
II > Slo-Blo
®
> 473 Series
RoHS
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
Agency Approvals
Applications
Agency
Agency File Number
Ampere Range
E10480
®
375mA - 7A
375mA - 7A
1A - 5A
LR 29862
JET 1896-31007-1001
PS
E
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
0.2670
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
®
Amp
Code
.375
.500
.750
001.
01.5
002.
2.25
02.5
003.
03.5
004.
005.
007.
Interrupting
Rating
PS
E
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
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Revised: January 12, 2009
473 Series
Cartridge and Axial Lead Fuses
PICO
®
II > Slo-Blo
®
> 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
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 > 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
473 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")
3.43 (.135")
MAX
Part Numbering System
0473 xxxx Y 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
1A
F
L
Quantity
Y = 4000
P = 2000
M = 1000
473 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")
3.43 (.135")
MAX
Type of Packaging
R = Reel
A = Ammo Pack
X = Loose Pack
Lead Length
T1: 52.4mm (2.062”)*
6.35 (.25")
tape
F
L
1A
6.35 (.25")
tape
5.0 (.197")
Option Codes
L = RoHS
HF = RoHS and Halogen-free
1A
F
L
Packaging
Packaging Option
Packaging Specification
EIA 296
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
473 Series
Cartridge and Axial Lead Fuses
©2009 Littelfuse, Inc.
Revised: January 12, 2009
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
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