Surface Mount Fuses NANO2® Fuse > Very Fast-Acting > 448 Series 448 Series Fuse RoHS Pb 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. Features • RoHS compliant, Lead- • Wide operating free and Halogen Free temperature range • Very fast-acting • UL Recognized to UL/ Agency Approvals CSA/NMX UL 248-1 and • Small size UL/CSA/NMX UL 248-14 • Wide range of current Agency Agency File Number Ampere Range • Conforms to DENAN’s rating available (0.062A E10480 0.062A - 15A Appendix 3 to 15A) 29862 0.062A - 15A NBK030205-E10480A 1A - 1.6A PS NBK030205-E10480B 2A - 5A Applications E NBK101105-E184655 6.3A - 10A • Notebook PC • Storage system • LCD/PDP TV • Telecom system • LCD monitor • Wireless basestation Electrical Characteristics for Series • LCD/PDP panel • White goods % of Ampere Rating Ampere Rating Opening Time • LCD backlight inverter • Game console 100% 0.062A –15 4 hours, Minimum • Portable DVD player • Office Automation 0.062A –10 5 sec., Maximum 200% 12 –15 20 sec., Maximum • Power supply equipment • Battery charging circuit • Networking protection • PC server • Industrial equipment • Cooling fan system Additional Information Datasheet Resources Samples © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/21/20

Surface Mount Fuses NANO2® Fuse > Very Fast-Acting > 448 Series Electrical Specifications by Item Agency Approvals Max Nominal Cold Ampere Rating Interrupting Nominal Melting Amp Code Voltage Rating Resistance (A) (V) Rating (Ohms) I2t (A2sec) PES 0.062 .062 125 5.50 0.00023 x x 0.080 .080 125 4.42 0.00043 x x 0.100 .100 125 2.90 0.00082 x 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 1.65 0.00380 x x 0.250 .250 125 0.95 0.01520 x x 0.315 .315 125 0.7015 0.02650 x x 0.375 .375 125 0.6155 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 0.3125 0.121 x x 0.750 .750 125 50A @125VAC/ 0.2290 0.206 x x VDC 0.800 .800 125 0.1907 0.272 x x 300A @32 VDC 1.00 001. 125 PSE: 100A 0.08630 0.441 x x x 1.25 1.25 125 @100VAC 0.06619 0.900 x x x 1.50 01.5 125 0.06514 0.900 x x x 1.60 01.6 125 0.06261 1.122 x x x 2.00 002. 125 0.03529 0.812 x x x 2.50 02.5 125 0.02934 1.156 x x x 3.00 003. 125 0.02445 1.720 x x x 3.15 3.15 125 0.02300 1.810 x 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 35A @125 VAC 50A @125 VDC 10.00 010. 125 300A @32 VDC 0.00700 28.00 x x x PSE: 100A @100VAC 12.00 012. 85 50A @65 VAC/ 0.00533 47.59 x x VDC 15.00 015. 85 300A @24 VDC 0.00394 78.4 x x 200A @85 VDC Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/21/20

Surface Mount Fuses NANO2® Fuse > Very Fast-Acting > 448 Series Temperature Re-rating Curve Average Time Cur4r48e SnERItES CNAuNOr LvEAeD sFREE VERY FAST ACTING FUSE .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 A1.00 A1.25 A1.50 A1.60 A2.00 A2.50 A3.00 A3.15 A3.50 A4.00 A5.00 A6.30 A7 A8 A10 A12 A15 A 100 10 S D N 1 O C E S N E I M TI 0.1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 0.001 0.1 1 10 100 1000 CURRENT IN AMPS Soldering Parameters Reflow Condition Pb – Free assembly t P - Temperature Min (Ts(min)) 150°C TP Critical Zone Pre Heat - Temperature Max (Ts(max)) 200°C Ramp-up TL to TP - Time (Min to Max) (t) 60 – 180 secs T s L t Average ramp up rate (Liquidus Temp (TL) to peak 5°C/second max. eruTS(max) L T to T - Ramp-up Rate 5°C/second max. ta S(max) L r Ramp-down e - Temperature (T) (Liquidus) 217°C p Preheat Reflow L mTS(min) - Temperature (tL) 60 – 150 seconds eT tS Peak Temperature (T) 260+0/–5 °C P Time within 5°C of actual peak Temperature (t) 20 – 40 seconds 25 p time to peak temperature Ramp-down Rate 5°C/second max. (t 25ºC to peak) Time Time 25°C to peak Temperature (T) 8 minutes max. P Do not exceed 260°C Wave Soldering Parameters 260°C Peak Temperature, 10 seconds max. © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/21/20

Surface Mount Fuses NANO2® Fuse > Very Fast-Acting > 448 Series Product Characteristics Body: Ceramic MIL-STD-202, Method 107, Test Condition Materials Terminations: Gold-plated Caps Thermal Shock B, 5 cycles, -65oC to 125oC, 15 minutes @ Product Marking Brand, Amperage Rating each extreme MIL-STD-202, Method 213, Test I: Operating Temperature -55oC to 125oC Deenergized. 100G’s pk amplitude, Moisture Sensitivity Level Level 1, J-STD-020 Mechanical Shock sawtooth wave 6ms duration, 3 cycles Solderability MIL-STD-202, Method 208 XYZ+xyz = 18 shocks Insulation Resistance (after MIL-STD-202, Method 302, Test Condition A MIL-STD-202, Method 201: 0.03” Opening) (10,000 ohms minimum) Vibration amplitude, 10-55 Hz in 1 min. 2hrs each XYZ=6hrs Moisture Resistance MIL-STD-202, Method 106, 10 cycles MIL-STD-202, Method 101, Test Condition Salt Spray B (48hrs) MIL-STD-202, Method 210, Test condition Resistance to Soldering Heat B (10 sec at 260oC) Dimensions Part Numbering System 6.10 ± .20 2.69 ± .25 0448 001. M R (.240") (.106") Series 7 A F 2.69 ± .25 (.106") Amp Code* Refer to Electrical 1.45 (.057") Characteristics table Quantity code 6.86 (.270") M = 1000 pcs Packaging code 3.15 (.124") R = Tape and Reel *Example: 2.95 1.5 amp product is 044801.5MR (1 amp (.116") product shown above). 1.96 (.077") Recommended pad layout Packaging Quantity & Packaging Option Packaging Specification Quantity Packaging Code 12mm Tape and Reel EIA RS-481-1 (IEC 600286-3) 1000 MR Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 01/21/20