Cartridge and Axial Lead Fuses
PICO® II > Slo-Blo® > 473 Series
473 Series,
RoHS
®
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
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t 4NBMMTJ[F
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SBUJOHT N""
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Agency Approvals
Applications
Agency
Agency File Number
Ampere Range
E10480
375mA - 7A
LR 29862
375mA - 7A
JET 1896-31007-1001
1A - 5A
®
PS
E
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t*OEVTUSJBMFRVJQNFOU
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Electrical Characteristics
% of Ampere
Rating
Opening Time
100%
)PVST
Min.
200%
4FD
Min.4FD
Max.
300%
4FD
Min.4FD
Max.
800%
4FD
Min.4FD
Max.
Electrical Characteristics
Ampere
Rating
(A)
Amp
Code
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
.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)
Nominal
Melting
I2t (A2 sec)
Nom
Voltage Drop
(mV)
50 amperes at 125 VDC/
VAC
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
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
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
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Agency Approvals
®
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PS
E
X
X
X
X
X
X
X
X
X
473 Series
Revised: January 12, 2009
Cartridge and Axial Lead Fuses
PICO® II > Slo-Blo® > 473 Series
Average Time Current Curves
.375A
.50A
.75A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
7.0A
Temperature Rerating Curve
1000
TIME IN SECONDS
100
10
1
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continuous operation.
0.1
Soldering Parameters
0.01
0.1
Recommended Process Parameters:
Wave Parameter
1
10
100
CURRENT IN AMPERES
1000
Lead-Free Recommendation
Preheat:
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5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
5FNQFSBUVSF.JOJNVN
100° C
5FNQFSBUVSF.BYJNVN
1SFIFBU5JNF
150° C
60-180 seconds
Solder Pot Temperature:
260° $.BYJNVN
Solder Dwell Time:
2-5 seconds
Recommended Hand-Solder Parameters:
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)FBUJOH5JNFTFDPOETNBY
Note: These devices are not recommended for IR or
Convection Reflow process.
©2009 Littelfuse, Inc.
473 Series
Revised: January 12, 2009
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
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Solder Coated Copper wire leads;
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Copper wire leads
Vibration
.*-45%
.FUIPE o
)[
.*-45%
.FUIPE
5FTU
$POEJUJPO$ o)[BU(T
1FBL
Solderability
.*-45%
.FUIPE
Salt Spray
Lead Pull Force
.*-45%
.FUIPE
5FTU$POEJUJPO
" XJMMXJUITUBOEMCTBYJBMQVMMUFTU
.*-45%
.FUIPE
5FTU
Condition B
Operating
Temperature
Insulation Resistance
(After Opening):
.*-45%
.FUIPE
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oº$UP$
.*-45%
.FUIPE
5FTU
$POEJUJPO$ TFDBU$
Shock
.*-45%
.FUIPE
5FTU$POEJUJPO
* (TQFBLGPSNJMMJTFDPOET
Resistance to Soldering
Heat
Thermal Shock
.*-45%
.FUIPE
5FTU
$POEJUJPO# o$UP$
Moisture Resistance
.*-45%
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Dimensions
Part Numbering System
473 Series (RoHS Version) Markings
0473 xxxx Y R T1 L
62.7 (2.468")
27.78
(1.094")
52.4 (2.062")*
7.11 (.280")
0.64 (.025")
1A
6.35 (.25")
tape
LF
27.78
(1.094")
Series
3.43 (.135")
MAX
Current Rating
Refer to Amp Code column of
Electrical Characteristics Table
6.35 (.25")
tape
5.0 (.197")
1A
Quantity
LF
Y = 4000
P = 2000
M = 1000
Type of Packaging
473 Series (RoHS and Halogen-free Version) Markings
R = Reel
A = Ammo Pack
X = Loose Pack
62.7 (2.468")
27.78
(1.094")
0.64 (.025")
6.35 (.25")
tape
52.4 (2.062")*
7.11 (.280")
LF
27.78
(1.094")
3.43 (.135")
MAX
Lead Length
1A
T1: 52.4mm (2.062”)*
6.35 (.25")
tape
5.0 (.197")
1A
Option Codes
L = RoHS
HF = RoHS and Halogen-free
LF
Packaging
Packaging Option
Packaging Specification
Quantity &
Packaging Code
5NN
5BQFBOE3FFM
EIA 296
1MFBTFSFGFSUPBWBJMBCMFRVBOUJUJFT
BCPWFJO1BSU/VNCFSJOH4ZTUFNw
/PUFT5EJNFOTJPOJTEFåOFEBTUIFMFOHUIPGUIFDPNQPOFOUCFUXFFOUIFUXPUBQFT5IFGVMMDPNQPOFOUMFOHUIJTNN
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
473 Series
Revised: January 12, 2009
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