Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
473 Series, PICO
®
II, Slo-Blo
®
Fuse
Description
PS
E
The PICO
®
II Slo-Blo
®
Fuse combines time-delay
performance characteristics with the proven reliability of
a PICO
®
Fuse.
Features
• Enhanced inrush
withstand
• Small size
• Wide range of current
ratings (375mA - 7A)
Agency Approvals
Agency
Agency File Number
Ampere Range
• RoHS compliant
• Wide operating
temperature range
• Low temperature
de-rating)
Applications
• Flat–panel Display TV
• LCD monitor
• Lighting system
Electrical Characteristics
% of Ampere
Rating
100%
200%
300%
Opening Time
4 Hours,
Min.
1 Sec.,
Min.;
60 Sec.,
Max.
0.2 Sec.,
Min.;
3 Sec.,
Max.
0.02 Sec.,
Min.;
0.1 Sec.,
Max.
• Medical equipment
• Industrial equipment
E10480
LR 29862
PS
E
375mA - 7A
375mA - 7A
1A - 5A
JET 1896-31007-1001
Additional Information
Datasheet
Resources
Samples
800%
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
Amp
Code
.375
.500
.750
001.
01.5
002.
2.25
02.5
003.
03.5
004.
005.
007.
max
Voltage
Rating
(V)
125
125
125
125
125
125
125
125
125
125
125
125
125
Interrupting
Rating
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
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
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
Temperature Rerating Curve
Average Time Current Curves
1000
100
TIME IN SECONDS
10
1
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.1
Soldering Parameters
Recommended Process Parameters:
Wave parameter
preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
0.01
0.1
.375A
.50A
.75A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
7.0A
1
10
100
CURRENT IN AMPERES
1000
lead-Free Recommendation
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
260
°
C Maximum
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.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
Product Characteristics
Encapsulated, Epoxy-Coated Body;
Solder Coated Copper wire leads;
RoHS compliant Product: Pure Tin-coated
Copper wire leads
MIL-STD-202, Method 208
MIL-STD-202, Method 211, Test Condition
A (will withstand 7 lbs. axial pull test)
–55
º
C to +125ºC
MIL-STD-202, Method 213, Test Condition
I (100 G’s peak for 6 milliseconds)
MIL
-STD-202, Method 201 (10–55
Hz); MIL
-STD-202, Method 204, Test
Condition C (55–2000 Hz at 10 G’s
Peak)
MIL
-STD-202, Method 101, Test
Condition B
MIL
-STD-202, Method 302, (10,000
ohms minimum at 100 volts)
MIL
-STD-202, Method 210, Test
Condition C (20 sec at 260ºC)
MIL
-STD-202, Method 107 Test
,
Condition B (–65ºC to 125ºC)
MIL
-STD-202, Method 106 (90–98%
RH), Heat (65ºC)
Materials
Solderability
Lead Pull Force
Operating
Temperature
Shock
Vibration
Salt Spray
Insulation Resistance
(After Opening):
Resistance to Soldering
Heat
Thermal Shock
Moisture Resistance
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
1A
L
6.35 (.25")
tape
5.0 (.197")
Refer to Amp Code column of
Electrical Characteristics Table
Quantity
Y = 4000
P = 2000
M = 1000
F
1A
L
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
*T1: 52.4mm (2.062") Tape and Reel
packaging Specification
EIA 296
Quantity &
packaging Code
Please refer to available quantities
above in "Part Numbering System”
Notes: * T1 dimension is defined as the length of the component between the two tapes. The full component length is 62.7mm (2.468").
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
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