Surface Mount Fuses NANO2(R) > 250V > Time Lag > 443 Series 443 Series Fuse Description 5IF7/BOP'VTFJTBTNBMMTRVBSFTVSGBDFNPVOU GVTFUIBUJTEFTJHOFEUPFOBCMFDPNQMJBODFXJUIUIF3P)4 EJSFDUJWF5IJTQSPEVDUJTGVMMZDPNQBUJCMFXJUIMFBEGSFF TPMEFSBMMPZBOEIJHIFSUFNQFSBUVSFQSPaMFTBTTPDJBUFE XJUIMFBEGSFFBTTFNCMZ t 7"$WPMUBHFSBUJOH t 5JNF-BH t "WBJMBCMF"o " Agency Approvals t 3P)4$PNQMJBOU AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 0.500A - 5.00A Applications t "$%$QPXFSBEBQUPS t 5FMFDPNFRVJQNFOU TZTUFNQPXFS Electrical Characteristics for Series % of Ampere Rating t 1PSUBCMFTZTUFNCVJMU JO"$%$DPOWFSUFS Opening Time IPVST .JOJNVN TFDPOET .BYJNVN t 'VMMZDPNQBUJCMF XJUIMFBEGSFFTPMEFS BMMPZTBOEIJHIFS UFNQFSBUVSFQSPaMFT BTTPDJBUFEXJUIMFBE GSFFBTTFNCMZ t )JHIWPMUBHF%$%$ DPOWFSUFS t -JHIUJOH4ZTUFN t -&%-JHIUJOH Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) Agency Approvals Nominal Melting It (A2sec) Nominal Voltage Drop (mV) 448 Y Y Nominal Cold Resistance (Ohms) Interrupting Rating 1 Y Y Y Y "!7"$ Y 98 Y 4 81 Y Y Notes: 1. Cold resistance measured at less than 10% of rated current at 23C. 2. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved 3. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options. (c) 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/443.html for current information. 73 Revised: March 17, 2009 443 Series 443 Series Features Mount Fuses IntroductionSurface to Circuit Protection NANO2(R) > 250V > Time LagTransientology > 443 Series Average Time Current Curves 0.50 A 0.75 A 1.00 A 1.50 A 2.00 A 2.50 A 3.00 A 3.50 A 4.00 A 5.00 A Temperature Rerating Curve 100 TIME IN SECONDS 10 1 0.1 /PUF 0.01 %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS DPOUJOVPVTPQFSBUJPO 0.001 0.1 1 10 100 1000 CURRENT IN AMPS Soldering Parameters Pre Heat 1Co'SFFBTTFNCMZ $ - Temperature Max (Ts(max)) $ - Time (Min to Max) (ts) oTFDT TL TS(max) $TFDPOENBY TS(max) to TL - Ramp-up Rate $TFDPOENBY - Temperature (TL) (Liquidus) $ - Temperature (tL) oTFDPOET Time within 5C of actual peak Temperature (tp) oTFDPOET Ramp-down Rate $TFDPOENBY Time 25C to peak Temperature (TP) NJOVUFTNBY Do not exceed $ Wave Soldering Parameters $1FBL 5FNQFSBUVSF TFDPOETNBY 443 Series tL Ramp-down TS(min) Preheat tS 25 Peak Temperature (TP) Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) Average ramp up rate (Liquidus Temp (TL) to peak Reflow tP TP Temperature Reflow Condition time to peak temperature (t 25C to peak) Time $ 74 Revised: March 17, 2009 (c) 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/443.html for current information. Surface Mount Fuses NANO2(R) > 250V > Time Lag > 443 Series Materials #PEZ$FSBNJD $BQ4JMWFS1MBUFE#SBTT Operating Temperature o0$UP0$XJUIQSPQFSEFSBUJOH Thermal Shock Product Marking #PEZ#SBOE-PHP $VSSFOU3BUJOH 3BUFE7PMUBHF 5$ $IBSBDUFSJTUJDi5w .*-45%' .FUIPE( 5FTU$POEJUJPO# DZDMFTP$ UP P$ Vibration .*-45%' .FUIPE" )[ Moisture Resistance .*-45% .FUIPE )JHI)VNJEJUZ 3) )FBU P$ Salt Spray .*-45%' .FUIPE 5FTU$POEJUJPO# Mechanical Shock .*-45% .FUIPE 5FTU$POEJUJPO* (TQFBLGPS NJMMJTFDPOET Insulation Resistance .*-45% .FUIPE 5FTU$POEJUJPO" PINT BGUFS0QFOJOH .JOJNVN Solderability .*-45% .FUIPE Resistance to Soldering Heat .*-45% .FUIPE 5FTU$POEJUJPO# TFDBUP$ Moisture Sensitivity Level -FWFM+45%$ .JODPQQFSMBZFSUIJDLOFTTVN .JODPQQFSUSBDFXJEUINN PCB Recommendation for Thermal Management "MUFSOBUFNFUIPETPGUIFSNBMNBOBHF NFOUNBZCFVTFE*OTVDIDBTFT VOEFSOPSNBMPQFSBUJPOT UIFNBYJNVN UFNQFSBUVSFPGUIFGVTFCPEZTIPVME OPUFYDFFE0$JOB0$BNCJFOU FOWJSPONFOU Part Numbering System Dimensions 3.25 (.128") 10.10 (.397") 5A T AC250V 3.12 (.123") 3.12 (.123") 6.10 (.240") 0443 .500 D R SERIES 3.43 (.135") AMP Code 3FGFSUP&MFDUSJDBM DIBSBDUFSJTUJDTUBCMF 12.6 (.496") 1.70 typ (.067") QUANTITY Code Recommended Pad Layout %QDT PACKAGING Code 35BQFBOE3FFM Example: BNQQSPEVDUJT 01.5 %3 BNQ QSPEVDUTIPXOBCPWF Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code NN5BQFBOE3FFM &*"34 *&$ QBSU %3 (c) 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/443.html for current information. 75 Revised: March 17, 2009 443 Series 443 Series Product Characteristics Introduction to Circuit Protection Transientology 76 Revised: March 17, 2009 (c) 2009 Littelfuse, Inc. Specifications are subject to change without notice.