Axial Lead & Cartridge Fuses PICO® ll > Slo-Blo® > 473 Series 473 Series, ® PICO ® II, Slo-Blo PS E Fuse Description The PICO® II Slo-Blo® Fuse combines time-delay performance characteristics with the proven reliability of a PICO® Fuse. Features t 3P)4DPNQMJBOU t&OIBODFEJOSVTI withstand t 4NBMMTJ[F t 8JEFPQFSBUJOH UFNQFSBUVSFSBOHF t 8JEFSBOHFPGDVSSFOU SBUJOHTN"" t -PXUFNQFSBUVSF EFSBUJOH Agency Approvals Applications PS E Agency File Number Ampere Range t'MBUoQBOFM%JTQMBZ57 t.FEJDBMFRVJQNFOU E10480 375mA - 7A t-$%NPOJUPS t*OEVTUSJBMFRVJQNFOU LR 29862 375mA - 7A t-JHIUJOHTZTUFN JET 1896-31007-1001 1A - 5A Electrical Characteristics % of Ampere Rating Opening Time 100% )PVSTMin. 200% 4FDMin.4FDMax. 300% 4FDMin.4FDMax. 800% 4FDMin.4FDMax. 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 0.3000 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 © 2012 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/473.html for current information. Agency Approvals PS E 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 X X X 473 Series Revised: April 24, 2011 473 Series Agency Introduction to & Circuit Protection Axial Lead Cartridge Fuses ® PICO® ll > Slo-BloTransientology > 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 /PUF %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS continuous operation. 0.1 Soldering Parameters Recommended Process Parameters: Wave Parameter 0.01 0.1 1 10 100 CURRENT IN AMPERES 1000 Lead-Free Recommendation Preheat: %FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO 5FNQFSBUVSF.JOJNVN 100° C 5FNQFSBUVSF.BYJNVN 1SFIFBU5JNF 150° C 60-180 seconds Solder Pot Temperature: 260° $.BYJNVN Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: 4PMEFS*SPO5FNQFSBUVSF¡$¡$ )FBUJOH5JNFTFDPOETNBY Note: These devices are not recommended for IR or Convection Reflow process. 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 &ODBQTVMBUFE&QPYZ$PBUFE#PEZ Solder Coated Copper wire leads; 3P)4DPNQMJBOU1SPEVDU1VSF5JODPBUFE Copper wire leads Vibration .*-45%.FUIPEo )[ .*-45%.FUIPE5FTU $POEJUJPO$o)[BU(T 1FBL Solderability .*-45%.FUIPE Salt Spray Lead Pull Force .*-45%.FUIPE5FTU$POEJUJPO "XJMMXJUITUBOEMCTBYJBMQVMMUFTU .*-45%.FUIPE5FTU Condition B Operating Temperature Insulation Resistance (After Opening): .*-45%.FUIPE PINTNJOJNVNBUWPMUT oº$UP$ .*-45%.FUIPE5FTU $POEJUJPO$TFDBU$ Shock .*-45%.FUIPE5FTU$POEJUJPO *(TQFBLGPSNJMMJTFDPOET Resistance to Soldering Heat Thermal Shock .*-45%.FUIPE5FTU $POEJUJPO#o$UP$ Moisture Resistance .*-45%.FUIPEo 3) )FBU$ Dimensions Part Numbering System 0473 xxxx Y R T1 L 62.7 (2.468") 27.78 (1.094") 52.4 (2.062")* 7.11 (.280") 0.64 (.025") 6.35 (.25") tape LF 27.78 (1.094") Series 3.43 (.135") MAX Current Rating 1A 6.35 (.25") tape 5.0 (.197") LF Refer to Amp Code column of Electrical Characteristics Table Quantity Y = 4000 P = 2000 M = 1000 1A 473 series markings Type of Packaging R = Reel A = Ammo Pack X = Loose Pack 473 Series Lead Length T1: 52.4mm (2.062”)* RoHS + HF Packaging Packaging Option Packaging Specification Quantity & Packaging Code 5NN 5BQFBOE3FFM EIA 296 1MFBTFSFGFSUPBWBJMBCMFRVBOUJUJFT BCPWFJO1BSU/VNCFSJOH4ZTUFNw /PUFT5EJNFOTJPOJTEFmOFEBTUIFMFOHUIPGUIFDPNQPOFOUCFUXFFOUIFUXPUBQFT5IFGVMMDPNQPOFOUMFOHUIJTNN © 2012 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/473.html for current information. 473 Series