0452004.NRL LITTELFUSE | Alldatasheet

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Technical content

Features

t 5JNF-BH 4MP#MP t 4NBMMTJ[F t 8JEFSBOHFPGDVSSFOU SBUJOHBWBJMBCMF N" UP" t 8JEFPQFSBUJOH temperature range t -PXUFNQFSBUVSF de-rating t 3P)4DPNQMJBOU t )BMPHFO'SFF Electrical Characteristics for Series % of Ampere Rating Opening Time 100% 4 hours, Minimum 200% 1 sec., Min.; 60 sec., Max. TFD .JO TFD .BY PS E Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2sec) Agency Approvals PS E BNQFSFT!7"$7%$ BNQFSFT!7%$ 14&BNQFSFT!7"$ 1 .2000 0.101 x x 0.240 x x 0.904 x x 001 . 001 . 1 .98 x x x xxx 2.00 002. 8.20 x x x xxx 20.16 x x x 0.0224 xxx 4.00 004. 0.0186 xxx xxx BNQFSFT!7"$ BNQFSFT!7%$ xx 8 008. BNQFSFT!7"$ BNQFSFT!7%$ 0.0088 xx 12 012. 0.0061 260.46 x x

Applications

t /PUFCPPL1$ t -$%1%157 t -$%NPOJUPS t -$%1%1QBOFM t -$%CBDLMJHIUJOWFSUFS t 1PSUBCMF%7%QMBZFS t 1PXFSTVQQMZ t /FUXPSLJOH t 1$TFSWFS t $PPMJOHGBOTZTUFN t 4UPSBHFTZTUFN t 5FMFDPNTZTUFN t 8JSFMFTTCBTFTUBUJPO t 8IJUFHPPET t (BNFDPOTPMF t 0GåDF"VUPNBUJPO equipment t #BUUFSZDIBSHJOHDJSDVJU protection t *OEVTUSJBMFRVJQNFOU t .FEJDBMFRVJQNFOU t "VUPNPUJWF Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 375mA - 12A LR29862 375mA - 12A PS E NBK030205-E10480B 1A - 5A Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC Revised: May 3, 2011

Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 62 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Surface Mount Fuses 452/454 Series NANO2® > Slo-Blo® > 452/454 Series Please refer to www.littelfuse.com/series/452.html or /454.html for current information. Average Time Current Curves Reflow Condition Pb – Free assembly Pre Heat - Temperature Min (Ts(min)) ¡$ - Temperature Max (Ts(max)) ¡$ - Time (Min to Max) (ts) 60 – 120 secs Average ramp up rate (Liquidus Temp (TL) to peak ¡$TFDPOENBY TS(max) to TL - Ramp-up Rate ¡$TFDPOENBY Reflow - Temperature (TL) (Liquidus) ¡$ - Temperature (tL) 60 – 90 seconds Peak Temperature (TP) Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds Ramp-down Rate ¡$TFDPOENBY Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed ¡$ Wave Soldering Parameters ¡$1FBL Temperature, TFDPOETNBY Soldering Parameters T emperature Rerating Curve Note: %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS continuous operation. Time Temperature TP TL TS(max) TS(min) tP tL tS time to peak temperature (t 25ºC to peak) Ramp-down Ramp-up Preheat Critical Zone TL to TP 0.01 0.1 100 0.1 1 10 100 1000 TIME IN SECONDS CURRENT IN AMPS 375mA 500mA 1.00A 1.50A 2.00A 2.50A 3.00A 3.50A 4.00A 5.00A 7.00A 750mA 8.00A 12.0A

63© 2009 Littelfuse, Inc. Specifications are subject to change without notice. Surface Mount Fuses 452/454 Series NANO2® > Slo-Blo® > 452/454 Series 452/454 Series Please refer to www.littelfuse.com/series/452.html or /454.html for current information. Materials #PEZ$FSBNJD 5FSNJOBUJPOT(PMEQMBUFE$BQT 4JMWFSQMBUFE$BQT Product Marking #SBOE "NQFSF3BUJOH Operating T emperature ¡$UP¡$ Moisture Sensitivity Level -FWFM +45%$ Solderability .*-45% .FUIPE Insulation Resistance (after Opening) .*-45% .FUIPE 5FTU$POEJUJPO PINTNJOJNVN Thermal Shock .*-45% .FUIPE 5FTU $POEJUJPO# DZDMFT NJOVUFT!FBDIFYUSFNF Mechanical Shock .*-45% .FUIPE 5FTU* %FFOFSHJ[FE(TQLBNQMJUVEF TBXUPPUIXBWFNTEVSBUJPO DZDMFT9:; YZ[ TIPDLT Vibration .*-45% .FUIPEw BNQMJUVEF )[JONJOIST FBDI9:; IST Moisture Resistance .*-45% .FUIPE DZDMFT Salt Spray .*-45% .FUIPE 5FTU $POEJUJPO# IST Resistance to Soldering Heat .*-45% .FUIPE 5FTU DPOEJUJPO# TFDBU¡$ Product Characteristics 1 A T 6.86 (.270") 3.15 (.124") 2.95 (.116")1.96 (.077") 2.69 (.106") 2.69 (.106") 1.45 (.057") 6.10 (.240") Recommended pad layout F Dimensions Packaging Part Numbering System Packaging Option Packaging Specification Quantity Quantity & Packaging Code QBSU QBSU 1000 .3 0452 001. M R L SERIES AMP Code QUANTITY Code PACKAGING Code QDT QDT 5BQFBOE3FFM RoHS Compliant & Halogen Free 3FGFSUP"NQ$PEFDPMVNOJOUIF &MFDUSJDBM4QFDJåDBUJPOTUBCMF The dot is positioned at the end of the number sequence with whole ratings and within for fractional ratings. Example:"NQQSPEVDUJT .375.3- BNQQSPEVDUTIPXO NOTE: “L” suffix applies to 452 series only TFSJFTNBZCFPSEFSFEBTFJUIFSi3P)4BOE)'w i- wTVGåY PSOPO3P)4 OP TVGåY WFSTJPO TFSJFTJTBWBJMBCMFPOMZBTi3P)4BOE)'wWFSTJPOBOEEPFTOPUSFRVJSFi-wTVGåY 1MFBTFEPOPUJODMVEFi-wTVGåYXJUIJOTFSJFTPSEFSJOHJOTUSVDUJPOT