Surface Mount Fuses NANO2® > Slo-Blo® Fuse > 452/454 Series 452/454 Series Fuse RoHS PS E Description The NANO2® Slo-Blo® fuse has enhanced inrush withstand characteristics over the NANO2® Fast-Acting fuse. The unique time delay feature of this fuse design helps solve the problem of nuisance “opening” by accommodating inrush currents that normally cause a fast-acting fuse to open. Features • Small size • Low temperature rerating • Wide range of current rating available (0.375A • RoHS compliant and to 12A) Halogen Free Agency Approvals • Wide operating temperature range AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 0.375A - 12A Applications 29862 0.375A - 12A • Notebook PC • Storage system PS NBK030205-E10480B 1A - 5A • LCD/PDP TV • Telecom system E • LCD monitor • Wireless basestation Electrical Characteristics for Series • LCD/PDP panel • White goods • LCD backlight inverter • Game console % of Ampere • Portable DVD player • Office Automation Opening Time Rating equipment • Power supply 100% 4 hours, Minimum • Battery charging circuit • Networking protection 200% 1 sec., Min.; 60 sec., Max. • PC server • Industrial equipment 300% 0.2 sec., Min.; 3 sec., Max • Cooling fan system 800% 0.002 sec., Min.; 0.1 sec., Max. Electrical Specifications by Item Max Agency Approvals Ampere Nominal Cold Nominal Voltage Interrupting Rating Amp Code Resistance Melting (A) Ra(Vtin)g Rating (Ohms) I2t (A2sec) PES 0.375 .375 125 1.2000 0.101 x x 0.500 .500 125 0.7000 0.240 x x 0.750 .750 125 0.3600 0.904 x x 001. 001. 125 0.2250 1.98 x x x 1.50 01.5 125 0.0930 3.65 x x x 50A @ 125 VAC/VDC 2.00 002. 125 300A @ 32 VDC 0.0625 8.20 x x x PSE: 100A @ 100 VAC 2.50 02.5 125 0.0450 15.0 x x x 3.00 003. 125 0.0340 20.16 x x x 3.50 03.5 125 0.0224 26.53 x x x 4.00 004. 125 0.0186 34.40 x x x 5.00 005. 125 0.0136 53.72 x x x 7.00 007. 75 0.0105 123.83 x x 50A @ 72 VAC 50A @ 60 VDC 8 008. 75 0.0088 137.34 x x 100A @ 75 VDC 12 012. 75 0.0061 260.46 x x Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC © 2018 Littelfuse, Inc. Specifications are subject to change without nSoptieccei.fi cAaptpiolincsa taioren steusbtjiencgt itso s ctrhoannggley rweicthoomumt neontdiceed.. Revised: 06/06/18

Surface Mount Fuses NANO2® > Slo-Blo® Fuse > 452/454 Series Temperature Re-rating Curve Average Time Current Curves 375mA500mA750mA1.00A1.50A2.00A2.50A3.00A3.50A4.00A5.00A7.00A8.00A12.0A 100 S D 10 N O C E S N E I M TI 1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.1 0.01 0.1 1 10 100 1000 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, 3 seconds max. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/06/18

Surface Mount Fuses NANO2® > Slo-Blo® Fuse > 452/454 Series Product Characteristics Body: Ceramic MIL-STD-202, Method 107, Test Terminations: Thermal Shock Condition B, 5 cycles, -65°C / Materials Gold-plated Caps / Sn-dipped Silver Plated +125°C, 15 minutes @ each extreme Caps (452 Series) MIL-STD-202, Method 213, Test I: Silver-plated Caps (454 Series) Deenergized. 100G’s pk amplitude, Mechanical Shock sawtooth wave 6ms duration, 3 Product Marking Brand, Ampere Rating cycles XYZ+xyz = 18 shocks Operating MIL-STD-202, Method 201: 0.03” -55°C to 125°C Temperature Vibration amplitude, 10-55 Hz in 1 min. 2hrs Moisture each XYZ=6hrs Level 1, J-STD-020 Sensitivity Level Moisture Resistance MIL-STD-202, Method 106, 10 cycles Solderability MIL-STD-202, Method 208 MIL-STD-202, Method 101, Test Salt Spray Condition B (48hrs) Insulation MIL-STD-202, Method 302, Test Condition Resistance (after Resistance to Soldering MIL-STD-202, Method 210, Test A (10,000 ohms minimum) Opening) Heat condition B (10 sec at 260°C) Dimensions Part Numbering System 0452 001. M R L 6.10 ± .20 2.69 ± .25 SERIES (.240") (.106") AMP Code F T 2.69 ± .25 Refer to Amp Code column in the 1 A (.106") Electrical Specifications table. The dot is positioned at the end of the number sequence with whole ratings 1.45 and within for fractional ratings. (.057") Example: 0.375 Amp product is 0452.375MRL (1 amp product shown) 6.86 QUANTITY Code (.270") M = 1000 pcs N = 5000 pcs 3.15 PACKAGING Code (.124") R = Tape and Reel L - RoHS Compliant & Halogen Free (Gold Plated Caps) 2.95 SN-RoHS Compliant & Halogen Free 1.96 (.116") (Sn-dipped Caps) (.077") Notes: 452 series may be ordered as “RoHS and HF (Gold Plated Caps)” (“L” suffix). Recommended pad layout 454 series is available only as “RoHS and HF” version and does not require “L” suffix. Please do not include “L” suffix within 454 series ordering instructions. Packaging Additional Information Quantity & Packaging Packaging Quantity Packaging Option Specification Code Datasheet Resources Samples 12mm Tape EIA RS-481-1 5000 NR 452 Series 452 Series 452 Series and Reel (IEC 286, part 3) 12mm Tape EIA RS-481-1 1000 MR and Reel (IEC 286, part 3) Datasheet Resources Samples 454 Series 454 Series 454 Series 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. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/06/18