.375A .50A .75A 1.0A 1.5A 2.0A 2.5A 3.0A 3.5A 4.0A 5.0A 7.0A
1000
100 10
TIME IN SECONDS
/PUF
%FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS continuous operation.
Revised: January 12, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice. Please refer to for current information.
t.FEJDBMFRVJQNFOU t*OEVTUSJBMFRVJQNFOU
Electrical Characteristics
% of Ampere Rating 100%
200%
300%
800%
Opening Time
)PVST Min. 4FD Min.4FD Max. 4FD Min.4FD Max. 4FD Min.4FD Max.
oº$UP $
.*-45% .FUIPE 5FTU$POEJUJPO * (TQFBLGPSNJMMJTFDPOET
Dimensions
473 Series (RoHS Version) Markings
62.7 (2.468")
27.78 (1.094")
Max Voltage Rating
(V) 125 125 125 125
125 125 125 125 125
125 125 125 125
Interrupting Rating
Nominal Cold Resistance (Ohms)
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
Agency Approvals
PS
®
E
X
X
X
ቤተ መጻሕፍቲ ባይዱ
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
X
X
X
X
X
X
©2009 Littelfuse, Inc.
Specifications are subject to change without notice. Please refer to for current information.
.*-45% .FUIPE 5FTU $POEJUJPO$ TFDBU$
.*-45% .FUIPE 5FTU $POEJUJPO# o$UP$
.*-45% .FUIPE o 3)
/PUFT 5EJNFOTJPOJTEFåOFEBTUIFMFOHUIPGUIFDPNQPOFOUCFUXFFOUIFUXPUBQFT5IFGVMMDPNQPOFOUMFOHUIJTNN

©2009 Littelfuse, Inc.
Lead-Free Recommendation
5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
100° C 150° C 60-180 seconds
Solder Pot Temperature:
260° $.BYJNVN
Solder Dwell Time:
2-5 seconds
Recommended Hand-Solder Parameters:
.*-45% .FUIPE 5FTU $POEJUJPO$ o)[BU(T 1FBL
.*-45% .FUIPE 5FTU Condition B
.*-45% .FUIPE PINTNJOJNVNBUWPMUT
0.01 0.1
1
10
100
CURRENT IN AMPERES
1000
473 Series
Revised: January 12, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice. Please refer to for current information.
62.7 (2.468")
27.78 (1.094")
52.4 (2.062")* 7.11 (.280")
27.78 (1.094")
0.64 (.025")
LF 1 A
3.43 (.135") MAX
6.35 (.25") tape
5.0 (.197")
1 A LF
6.35 (.25") tape
52.4 (2.062")* 7.11 (.280")
27.78 (1.094")
0.64 (.025")
1 A LF
3.43 (.135") MAX
6.35 (.25") tape
5.0 (.197")
1 A LF
6.35 (.25") tape
473 Series (RoHS and Halogen-free Version) Markings
Revised: January 12, 2009
473 Series
Cartridge and Axial Lead Fuses
PICO® II > Slo-Blo® > 473 Series
Temperature Rerating Curve
Average Time Current Curves
Agency Approvals
Agency
Agency File Number E10480
®
LR 29862
PS E
JET 1896-31007-1001
Ampere Range 375mA - 7A 375mA - 7A
1A - 5A
Features
t&OIBODFEJOSVTIXJUITUBOE t 4NBMMTJ[F t 8JEFSBOHFPGDVSSFOU
Type of Packaging R = Reel A = Ammo Pack X = Loose Pack
Lead Length T1: 52.4mm (2.062”)*
Option Codes L = RoHS HF = RoHS and Halogen-free
Packaging
Packaging Option
Cartridge and Axial Lead Fuses
PICO® II > Slo-Blo® > 473 Series
Product Characteristics
Materials
Solderability Lead Pull Force Operating Temperature Shock
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.
Vibration
Salt Spray Insulation Resistance (After Opening): Resistance to Soldering Heat Thermal Shock
Moisture Resistance
.*-45% .FUIPE o )[
Specifications are subject to change without notice. Please refer to for current information.
Revised: January 12, 2009
473 Series
Cartridge and Axial Lead Fuses
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.
Nominal Melting I2t (A2 sec)
0.085 0.210 0.760 2.010 3.940 7. 6 0 0 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