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 • UL Recognized to UL/ CSA/NMX UL 248-1 and • Wide range of current rating available (0.375A UL/CSA/NMX UL 248-14 to 12A) • Conforms to DENAN’s Agency Approvals • Wide operating Appendix 3 temperature range Agency Agency File Number Ampere Range • RoHS compliant and Halogen Free E10480 0.375A - 12A 29862 0.375A - 12A PS NBK030205-E10480B 1A - 5A Applications E • Notebook PC • Storage system • LCD/PDP TV • Telecom system Electrical Characteristics for Series • LCD monitor • Wireless basestation • LCD/PDP panel • White goods % of Ampere Rating Opening Time • LCD backlight inverter • Game console • Portable DVD player • Office Automation 100% 4 hours, Minimum equipment 200% 1 sec., Min.; 60 sec., Max. • Power supply • Battery charging circuit 300% 0.2 sec., Min.; 3 sec., Max • Networking protection 800% 0.002 sec., Min.; 0.1 sec., Max. • PC server • Industrial equipment • Cooling fan system Electrical Specifications by Item Max Agency Approvals Ampere Rating Interrupting Nominal Cold Nominal Melting Amp Code Voltage Rating (A) Rating Resistance (Ohms) I2t (A2sec) PS (V) E 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 50A @ 125 VAC/VDC 0.0930 3.65 x x x 2.00 002. 125 300A @ 32 VDC 0.0625 8.20 x x x 2.50 02.5 125 PSE: 100A @ 100 VAC 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 50A @ 72 VAC 0.0105 123.83 x x 8 008. 75 50A @ 60 VDC 0.0088 137.34 x x 12 012. 75 100A @ 75 VDC 0.0061 260.46 x x Notes: - l2t calculated at 8ms. - Resistance is measured at 10% of rated current, 25ºC © 2019 Littelfuse, Inc. Specifications are subject to change without notice. ASpppelcicifiactiaotnio tness tainreg sisu sbtjreocnt gtoly crheacnogmem weinthdoeudt. notice. Revised: 11/21/19

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 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, 3 seconds max. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/21/19

Surface Mount Fuses NANO2® > Slo-Blo® Fuse > 452/454 Series Product Characteristics Body: Ceramic MIL-STD-202, Method 107, Test Condition Terminations: Thermal Shock B, 5 cycles, -65°C / +125°C, 15 minutes @ Materials Gold-plated Caps / Sn-dipped Silver Plated each extreme Caps (452 Series) MIL-STD-202, Method 213, Test I: Silver-plated Caps (454 Series) Mechanical Shock Deenergized. 100G’s pk amplitude, sawtooth wave 6ms duration, 3 cycles Product Marking Brand, Ampere Rating XYZ+xyz = 18 shocks Operating Temperature -55°C to 125°C MIL-STD-202, Method 201: 0.03” Moisture Sensitivity Level Level 1, J-STD-020 Vibration amplitude, 10-55 Hz in 1 min. 2hrs each Solderability MIL-STD-202, Method 208 XYZ=6hrs Insulation Resistance MIL-STD-202, Method 302, Test Condition A Moisture Resistance MIL-STD-202, Method 106, 10 cycles (after Opening) (10,000 ohms minimum) 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 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 Electrical Specifications table. 1 A (.106") The dot is positioned at the end of the number sequence with whole ratings and within for 1.45 fractional ratings. (.057") Example: 0.375 Amp product is 0452.375MRL (1 amp product shown) 6.86 Quantity code M = 1000 pcs (.270") 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 Packaging Quantity & Packaging Option Quantity Specification Packaging Code EIA RS-481-1 12mm Tape and Reel 5000 NR (IEC 286, part 3) EIA RS-481-1 Datasheet Resources Samples 12mm Tape and Reel 1000 MR (IEC 286, part 3) 452 Series 452 Series 452 Series 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. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/21/19