448

Surface Mount Fuses NANO2® > Very Fast-Acting > 448 Series 448 Series Fuse Description PS E 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. Features Free Agency Approvals AGENCY AGENCY FILE NUMBER E10480 LR29862 PS E temperature range de-rating AMPERE RANGE 62mA - 15A 62mA - 15A 1A - 10A Applications NBK030205 Electrical Characteristics for Series % of Ampere Rating 100% 200% Ampere Rating 1/16 –15 1/16 –10 12 –15 Opening Time 4 hours, Minimum 5 sec., Maximum 20 sec., Maximum equipment protection © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. 49 Revised: December 17, 2010 448 Series 448 Series S Introduction to Circuit Protection Introduction urface Mount Fuses Transientology NANO2® > Very Fast-Acting > 448 Series Electrical Specifications by Item Ampere Rating (A) 0.062 0.080 0.100 0.125 0.160 0.200 0.250 0.315 0.375 0.400 0.500 0.630 0.750 0.800 1.00 1.25 1.50 1.60 2.00 2.50 3.00 3.15 3.50 4.00 5.00 6.30 7 .00 8.00 Max Voltage Rating (V) 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 35 amperes 50 amperes 10.00 010. 125 300 amperes 0.00700 28.00 x x x 50 amperes 300 amperes Interrupting Rating Nominal Cold Resistance (Ohms) 5.50 4.42 2.90 2.58 1.76 1.40 1.05 0.7900 0.7300 0.4895 0.3800 0.2821 0.2475 0.1907 0.08630 0.06619 0.06514 0.06261 0.03529 0.02934 0.02445 0.02300 0.02100 0.01577 0.01531 0.01044 0.00900 0.00780 Nominal Melting I2t (A2sec) 0.00023 0.00043 0.00082 0.00130 0.00280 0.00380 0.01520 0.02650 0.02400 0.04160 0.10000 0.121 0.206 0.272 0.441 0.900 0.900 1.122 0.812 1.156 1.720 1.810 2.300 3.970 4.490 12.10 13.92 18.33 Agency Approvals PS E Amp Code .062 .080 .100 .125 .160 .200 .250 .315 .375 .400 .500 .630 .750 .800 001. 1.25 01.5 01.6 002. 02.5 003. 3.15 03.5 004. 005. 06.3 007 . 008. 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 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 12.00 15.00 012. 015. 65 65 50 amperes 300 amperes 0.00533 0.00394 47 .59 96.10 x x x x Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC 448 Series 50 © 2009 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 Temperature Rerating Curve 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 100 10 TIME IN SECONDS 1 0.1 continuous operation. 0.01 0.001 0.1 1 10 100 1000 CURRENT IN AMPS Soldering Parameters Reflow Condition - Temperature Min (Ts(min)) Pre Heat - Temperature Max (Ts(max)) - Time (Min to Max) (ts) Average ramp up rate (Liquidus Temp (TL) to peak TS(max) to TL - Ramp-up Rate Reflow - Temperature (TL) (Liquidus) - Temperature (tL) 60 – 90 seconds 250 +0/-5 TP Ramp-up tP Critical Zone TL to TP 60 – 120 secs Temperature TL TS(max) Preheat tL Ramp-down TS(min) tS 25 time to peak temperature (t 25ºC to peak) Time Peak Temperature (TP) Time within 5°C of actual peak Temperature (tp) Ramp-down Rate Time 25°C to peak Temperature (TP) Do not exceed 20 – 40 seconds 8 minutes max. Wave Soldering Parameters Temperature, 10 seconds max. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information. 51 448 Series 448 Series S Introduction to Circuit Protection Introduction urface Mount Fuses Transientology NANO2® > Very Fast-Acting > 448 Series Product Characteristics Materials Product Marking Operating Temperature Moisture Sensitivity Level Solderability Insulation Resistance (after Opening) Moisture Resistance Salt Spray Resistance to Soldering Heat o Thermal Shock 125o -55o o o Mechanical Shock sawtooth wave 6ms duration, 3 Vibration Dimensions 6.10 (.240") F 2.69 (.106") 2.69 (.106") Part Numbering System 0448 001. M R SERIES AMP Code* Refer to Electrical Characteristics table M = 1000 pcs 7A 1.45 (.057") 6.86 (.270") 3.15 (.124") 2.95 1.96 (.116") (.077") Recommended pad layout QUANTITY Code PACKAGING Code R = Tape and Reel *Example: 1.5 amp product is 044801.5MR Packaging Packaging Option 12mm Tape and Reel Packaging Specification Quantity 1000 Quantity & Packaging Code MR 448 Series 52 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/448.html for current information.