Surface Mount Fuses NANO2® > Very Fast-Acting Fuse > 451/453 Series 451/453 Series Fuse RoHS PS E Description The Nano2® SMF Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse that was designed for secondary side circuit over-current protection applications. These fuses are designed for PCB using surface mount technology. Features • Very fast-acting • Low temperature rerating • Small size • RoHS compliant and • Wide range of current Agency Approvals rating available Halogen Free (0.062A to 20A) AGENCY AGENCY FILE NUMBER AMPERE RANGE • Wide operating temperature range E10480 6.3A - 20A 29862 0.062A - 15A Applications PS NBK030205-E10480A/B 1A - 5A • Notebook PC • Storage system E NBK101105-E184655 6.3A - 10A • LCD/PDP TV • Telecom system E10480 0.062A - 5A • LCD monitor • Wireless basestation • LCD/PDP panel • White goods Electrical Characteristics for Series • LCD backlight inverter • Game console % of Ampere • Portable DVD player • Office Automation Ampere Rating Opening Time Rating equipment • Power supply 100% 0.062 – 20 4 hours, Minimum • Battery charging circuit • Networking 0.062 – 10 5 sec., Maximum protection 200% • PC server 12 – 20 20 sec., Maximum • Industrial equipment • Cooling fan system Additional Information Datasheet Resources Samples 451 Series 451 Series 451 Series Datasheet Resources Samples 453 Series 453 Series 453 Series © 2017 Littelfuse, Inc. Specifications are subject to change without nSoptieccei.fi cAaptpiolincsa taioren steusbtjiencgt itso scthroannggley wreicthoomumt neontdiceed.. Revised: 12/14/17

Surface Mount Fuses NANO2® > Very Fast-Acting Fuse > 451/453 Series Electrical Specifications by Item Max Nominal Agency Approvals Ampere Nominal Amp Voltage Interrupting Cold Rating Melting (A) Code Ra(Vtin)g Rating Re(Osihstmans)ce I2t (A2sec) PES 0.062 .062 125 5.5000 0.00019 x x 0.080 .080 125 4.0500 0.00033 x x 0.100 .100 125 3.1000 0.00138 x x 0.125 .125 125 1.7000 0.00286 x x 0.160 .160 125 1.2157 0.0048 x x 0.200 .200 125 0.8372 0.0089 x x 0.250 .250 125 0.5765 0.0158 x x 0.315 .315 125 0.3918 0.0311 x x 50A @125VAC/VDC 0.375 .375 125 300A @32VDC 0.4541 0.0442 x x 0.400 .400 125 PSE: 100A @100VAC 0.4233 0.0551 x x 0.500 .500 125 0.3046 0.0824 x x 0.630 .630 125 0.2022 0.1381 x x 0.750 .750 125 0.1444 0.2143 x x 0.800 .800 125 0.1355 0.2654 x x 1.00 001. 125 0.0780 0.6029 x x x 1.25 1.25 125 0.0780 0.664 x x x 1.50 01.5 125 0.0630 0.853 x x x 1.60 01.6 125 0.0580 1.060 x x x 2.00 002. 125 0.0367 0.530 x x x 2.50 02.5 125 0.0286 1.029 x x x 50A @125VAC/VDC 3.00 003. 125 0.0227 1.650 x x x 10,000A @75VDC 3.15 3.15 125 0.0215 1.920 x x x 300A @32VDC 3.50 03.5 125 PSE: 100A @100VAC 0.0200 2.469 x x x 4.00 004. 125 0.0160 3.152 x x x 5.00 005. 125 0.0125 5.566 x x x 6.30 06.3 125 0.0096 9.170 x x x 50A @125VAC/VDC 7.00 007. 125 400A @32VDC 0.0090 10.32 x x x 8.00 008. 125 PSE: 100A @100VAC 0.0077 20.23 x x x 35A @125 VAC/ 50A @125 VDC 10.0 010. 125 0.0056 26.46 x x x 400A @32 VDC PSE: 100A @100VAC 12.0 012. 65 150A @65VDC 0.0049 47.97 x x 15.0 015. 65 100A @65VAC 0.0037 97.82 x x 20.0 020. 65 400A @32VDC 0.00244 154 x Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC 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. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17

Surface Mount Fuses NANO2® > Very Fast-Acting Fuse > 451/453 Series Temperature Re-rating Curve Average Time Current Curves Fast Acting Series TC Curve 62mA80mA100mA125mA160mA200mA250mA315mA375mA400mA500mA630mA750mA800mA1A1.25A1.5A1.6A2A2.5A3A3.15A3.5A4A5A6.3A7A8A10A12A15A20A 100 10 1 DS N O C N SE ME I 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 0.01 0.1 1 10 100 1000 10000 CURRENT IN AMPS Soldering Parameters Reflow Condition Pb – Free assembly tP T P Critical Zone - Temperature Min (T ) 150°C Ramp-up TL to TP s(min) T Pre Heat - Temperature Max (T ) 200°C L t s(max) eT L - Time (Min to Max) (t) 60 – 120 secs ru S(max) s ta Average ramp up rate (Liquidus Temp re Ramp-down 5°C/second max. p Preheat (T) to peak mT L S(min) e t T to T - Ramp-up Rate 5°C/second max. T S S(max) L - Temperature (T) (Liquidus) 217°C Reflow L 25 - Temperature (tL) 60 – 90 seconds time (tto 2 p5eºCak t ote pmepaekr)ature Time Peak Temperature (T ) 260+0/–5 °C P Time within 5°C of actual peak 20 – 40 seconds Temperature (t ) p Ramp-down Rate 5°C/second max. Time 25°C to peak Temperature (T ) 8 minutes max. P Do not exceed 260°C 260°C Peak Wave Soldering Parameters Temperature, 10 seconds max. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17

Surface Mount Fuses NANO2® > Very Fast-Acting Fuse > 451/453 Series Product Characteristics Body: Ceramic MIL-STD-202, Method 107, Test Terminations: Thermal Shock Condition B, 5 cycles, -65°C / Gold-Plated Caps / Sn-dipped Silver Plated +125°C, 15 minutes @ each extreme Caps (451 RoHS/HF series) Materials MIL-STD-202, Method 213, Test I: SnPb Plated Caps (for 451 Non-RoHS series, Deenergized. 100G’s pk amplitude, 375mA-15A) Mechanical Shock sawtooth wave 6ms duration, 3 Silver-plated Caps (451MR RoHS ratings cycles XYZ+xyz = 18 shocks below 375mA and 453 RoHS Series) MIL-STD-202, Method 201: 0.03” Product Marking Brand, Ampere Rating Vibration amplitude, 10-55 Hz in 1 min. 2hrs Operating each XYZ=6hrs –55°C to 125°C Temperature Moisture Resistance MIL-STD-202, Method 106, 10 cycles Moisture Sensitivity Level 1, J-STD-020 Level MIL-STD-202, Method 101, Test Salt Spray Solderability MIL-STD-202, Method 208 Condition B (48hrs) Insulation Resistance to Soldering MIL-STD-202, Method 210, Test Resistance MIL-STD-202, Method 302, Test Condition Heat condition B (10 sec at 260°C) A (10,000 ohms minimum) (after Opening) Dimensions Part Numbering System 6.10 ± .20 2.69 ± .25 0451 001. M R L (.240") (.106") SERIES F 7 A 2.69 ± .25 451 = Gold / SnPb / Silver Plated Caps (.106") 453 = Silver Plated Caps 1.45 AMP Code (.057") Refer to Electrical 6.86 characteristics table (.270") QUANTITY Code 3.15 M = 1000 pcs (.124") N = 5000 pcs 2.95 PACKAGING Code 1.96 (.116") R = Tape and Reel (.077") L-RoHS Compliant & Halogen Free Recommended pad layout (Gold Plated Caps) SN-RoHS Compliant & Halogen Free (Sn-dipped Caps) NOTE: “L” suffix applies to 451 series only - 451 series may be ordered as either “RoHS and HF” (“L” suffix) or non-RoHS (no suffix) version. - 453 series is available only as RoHS compliant version and does not require “L” suffix. Please do not include “L” suffix within 453 series ordering instructions. Packaging Quantity & Packaging Option Packaging Specification Quantity Packaging Code 12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 5000 NR 12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1000 MR © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17