Surface Mount Fuses Nano2® > 600VDC > Fast-Acting Fuse > 485 Series 485 Series Fuse (Not Recommended for Automotive Applications) RoHS Description The 485 Nano2® Fuse Series is a small, fast-acting, surface mount ceramic fuse rated at a remarkable 600VDC at its small size and with 100A breaking capacity. It is primarily designed for circuit protection in high energy applications. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. Features • Fast-Acting / Surface • Relatively high breaking mount high fuse for high capacity at 100A. voltage (up to 600VDC) • RoHS-compliant and Agency Approvals applications. Halogen-free • Fully compatible with • Ampere Ratings: 1A - Agency Agency File Number Ampere Rating lead-free solder alloys 3.15A E10480 1A - 3.15A and higher temperature profiles associated with 29862 1A - 3.15A lead-free assembly. Electrical Characteristics for Series Applications • PC server and Telecom • Uninterruptible Power % of Ampere Rating Opening Time at 25ºC systems Supply (UPS) / 3-Phase 100% 4 hours, Minimum Power Supplies • LCD TV inverter boards 200% 60 seconds, Maximum DC input protection • 380VDC server / lighting in data center Additional Information Datasheet Resources Samples Electrical Specifications by ltem Ampere Max Voltage Nominal Cold Nominal Agency Approvals Rating Amp Code Rating Interrupting Rating Melting I2t Resistance (Ohms) (A) (V) (A2sec) 1.00 001. 600 0.264 0.3044 X X 1.50 01.5 600 0.123 0.3917 X X 100A@600VDC, 2.00 002. 600 100A@250VAC 0.0744 0.8962 X X 2.50 02.5 600 0.0583 1.4921 X X 3.15 3.15 600 0.0395 3.304 X X Notes: 1. Cold resistance measured at less than 10% of rated current at 23°C. 2. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved. 3. I2t values stated for 8 msec opening time. © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/14/20

Surface Mount Fuses Nano2® > 600VDC > Fast-Acting Fuse > 485 Series Temperature Re-rating Curve Average Time Current Curves 100 1A 1.5A 2A 2.5A 3.15A 10 S D ON 1 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 10 0 1000 CURRENT IN AMPE RES Soldering Parameters - Reflow Soldering Reflow Condition Pb – Free Assembly t P - Temperature Min (T ) 150°C T s(min) P Critical Zone Pre Heat - Temperature Max (Ts(max)) 200°C Ramp-up TL to TP - Time (Min to Max) (ts) 60 – 180 ses TL 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 © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/14/20

Surface Mount Fuses Nano2® > 600VDC > Fast-Acting Fuse > 485 Series Product Characteristics Material Body: Ceramic MIL-STD-202, Method 107, Cap: Silver Plated Brass Thermal Shock Test Condition B, 5 cycles, -65˚C to 125˚C, 15 Product Marking Body: Brand Logo, Current Rating minutes @ each extreme MIL-STD-202, Method 213, Operating Temperature -55˚C to 125˚C with proper derating Test Condition I: Deenergized. 100G’s peak Moisture Sensitivity Level 1 J-STD-020 Mechanical Shock amplitude, sawtooth wave 6ms duration, 3 Level cycles XYZ+xyz = 18 shocks Solderability MIL-STD-202, Method 208 Vibratio MIL-STD-202, Method 201: 0.03” amplitude, 10-55 Hz in 1 min. 2 hrs. each XYZ=6hrs Insulation Resistance MIL-STD-202, Method 302, Moisture Resistance MIL-STD-202, Method 106, 10 cycles (after Opening) Test Condition A (10,000 ohms, Minimum) MIL-STD-202, Method 101, Salt Spray Test Condition B (48hrs) Resistance to MIL-STD-202, Method 210, Soldering Heat Test Condition B (10 sec at 260˚C) Dimensions Part Numbering System 0485 3.15 D R 12.1 Recommended Pad Layout (.475”) 6.7 SERIES (.264”) 4.5 5.6 (.177”) LF3.15A F (.22”) AMP Code* 2.8 6.9 Refer to Electrical (.11”) (.27”) Characteristics Table TOP VIEW WAVE SOLDER QUANTITY Code 3.5 D = 1500 pieces (.14”) PACKAGING Code 4.5 5.6 6.8 R = Tape and Reel (.177”) (.22”) (.264”) *Example Height 3.15 amp is 04853.15DR END CAP REFLOW SOLDER Packaging Packaging Option Packaging Specification Quantity Ouantity & Option Code 24mm Tape and Reel EIA-RS 481-1, (IEC 286, Part 3 1500 DR Disclaimer Notice - 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: GD.10/14/20