Surface Mount Fuses NANO2® > Very Fast-Acting > 448 Series 448 Series Fuse PS E Description The lead-free Nano2 SMF Fuse is a very small, square surface mount fuse that is RoHS compliant, Halogen Free and 100% lead-free. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. Agency Approvals AGENCY t -FBEGSFFBOE)BMPHFO Free t 8JEFPQFSBUJOH temperature range t 7FSZGBTUBDUJOH t -PXUFNQFSBUVSF de-rating t 4NBMMTJ[F AGENCY FILE NUMBER AMPERE RANGE E10480 62mA - 15A LR29862 62mA - 15A t 8JEFSBOHFPGDVSSFOU SBUJOHBWBJMBCMFN" UP" Applications PS E NBK030205 1A - 10A Electrical Characteristics for Series % of Ampere Rating Ampere Rating Opening Time 100% 1/16 –15 4 hours, Minimum 1/16 –10 5 sec., Maximum 12 –15 20 sec., Maximum 200% t /PUFCPPL1$ t 5FMFDPNTZTUFN t -$%1%157 t 8JSFMFTTCBTFTUBUJPO t -$%NPOJUPS t 8IJUFHPPET t -$%1%1QBOFM t (BNFDPOTPMF t -$%CBDLMJHIUJOWFSUFS t 0GmDF"VUPNBUJPO equipment t 1PSUBCMF%7%QMBZFS t 1PXFSTVQQMZ t /FUXPSLJOH t 1$TFSWFS t $PPMJOHGBOTZTUFN t 4UPSBHFTZTUFN © 2012 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. t #BUUFSZDIBSHJOHDJSDVJU protection t *OEVTUSJBMFRVJQNFOU t .FEJDBMFRVJQNFOU t"VUPNPUJWF 448 Series Revised: September 6, 2012 448 Series Features Surface Mount Fuses NANO2® > Very Fast-Acting > 448 Series Electrical Specifications by Item Ampere Rating (A) Amp Code 0.062 .062 Max Voltage Rating (V) 125 0.080 .080 125 Interrupting Rating Agency Approvals Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2sec) 5.50 0.00023 x x 4.42 0.00043 x x x PS E 0.100 .100 125 2.90 0.00082 x 0.125 .125 125 2.58 0.00130 x x 0.160 .160 125 1.76 0.00280 x x 0.200 .200 125 1.40 0.00380 x x 0.250 .250 125 1.05 0.01520 x x 0.315 .315 125 0.7900 0.02650 x x 0.375 .375 125 0.7300 0.02400 x x 0.400 .400 125 0.4895 0.04160 x x 0.500 .500 125 0.3800 0.10000 x x 0.630 .630 125 0.2821 0.121 x x 0.750 .750 125 0.2475 0.206 x x 0.800 .800 125 1.00 001. 125 1.25 1.25 125 1.50 01.5 125 1.60 01.6 2.00 2.50 3.00 50 amperes !7"$7%$ 0.1907 0.272 x x 0.08630 0.441 x x x 0.06619 0.900 x x x 0.06514 0.900 x x x 125 0.06261 1.122 x x x 002. 125 0.03529 0.812 x x x 02.5 125 0.02934 1.156 x x x 003. 125 0.02445 1.720 x x x x 300 amperes !7%$ 14&BNQFSFT !7"$ 3.15 3.15 125 0.02300 1.810 x x 3.50 03.5 125 0.02100 2.300 x x x 4.00 004. 125 0.01577 3.970 x x x 5.00 005. 125 0.01531 4.490 x x x 6.30 06.3 125 0.01044 12.10 x x x 7.00 007. 125 0.00900 13.92 x x x 8.00 008. 125 0.00780 18.33 x x x 0.00700 28.00 x x x 0.00533 47.59 x x 0.00394 96.10 x x 35 amperes !7"$ 10.00 010. 125 50 amperes !7%$ 300 amperes !7%$ 14&BNQFSFT !7"$ 12.00 012. 85 15.00 015. 85 50 amperes !7"$7%$ 300 amperes !7%$ 200 amperes !7%$ Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC 448 Series © 2012 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. Surface Mount Fuses NANO2® > Very Fast-Acting > 448 Series Average Time Current Curves .062 A .080 A .100 A .125 A .160 A .200 A .250 A .315 A .375 A .40 A .50 A .63 A .75 A .80 A 1.00 A 1.25 A 1.50 A 1.60 A 2.00 A 2.50 A 3.00 A 3.15 A 3.50 A 4.00 A 5.00 A 6.30 A 7A 8A 10 A 12 A 15 A Temperature Rerating Curve 100 448 Series TIME IN SECONDS 10 1 0.1 /PUF %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS continuous operation. 0.01 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) 60 – 120 secs ¡$TFDPOENBY TS(max) to TL - Ramp-up Rate ¡$TFDPOENBY - Temperature (TL) (Liquidus) ¡$ - Temperature (tL) 60 – 90 seconds +0/-5 tL Ramp-down TS(min) Preheat tS time to peak temperature (t 25ºC to peak) Time ¡$ 250 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 ¡$1FBL Temperature, 10 seconds max. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. TL TS(max) 25 Peak Temperature (TP) © 2012 Littelfuse, Inc. Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) Average ramp up rate (Liquidus Temp (TL) to peak Reflow tP TP Temperature Reflow Condition 448 Series Surface Mount Fuses NANO2® > Very Fast-Acting > 448 Series Product Characteristics Materials #PEZ$FSBNJD 5FSNJOBUJPOT(PMEQMBUFE$BQT Product Marking #SBOE"NQFSBHF3BUJOH Operating Temperature Moisture Sensitivity Level Thermal Shock Mechanical Shock -55o$UPo$ -FWFM+45%$ Vibration Solderability .*-45%.FUIPE Insulation Resistance (after Opening) .*-45%.FUIPE5FTU$POEJUJPO "PINTNJOJNVN Moisture Resistance Salt Spray Resistance to Soldering Heat Dimensions 6.10 ± .20 F 7A .*-45%.FUIPEDZDMFT .*-45%.FUIPE5FTU $POEJUJPO#IST .*-45%.FUIPE5FTU DPOEJUJPO#TFDBUo$ Part Numbering System 2.69 ± .25 0448 001. M R 2.69 ± .25 SERIES AMP Code* Refer to Electrical Characteristics table 1.45 1.96 .*-45%.FUIPE5FTU $POEJUJPO#DZDMFTo$UP 125o$NJOVUFT!FBDIFYUSFNF .*-45%.FUIPE5FTU* %FFOFSHJ[FE(TQLBNQMJUVEF sawtooth wave 6ms duration, 3 DZDMFT9:;YZ[TIPDLT .*-45%.FUIPEw BNQMJUVEF)[JONJOIST FBDI9:;IST 6.86 QUANTITY Code 3.15 PACKAGING Code M = 1000 pcs R = Tape and Reel *Example: 1.5 amp product is 044801.5MR BNQQSPEVDUTIPXOBCPWF 2.95 Recommended pad layout Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 12mm Tape and Reel &*"34*&$QBSU 1000 MR 448 Series © 2012 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information.