Surface Mount Fuses NANO2® > Very Fast Acting Fuse > 456 Series 456 Series Fuse RoHS PS E Description The High Current NANO2® Fuse is a small square surface mount fuse that is designed to support higher current requirements of various applications. 40A Features • Surface mount high • Available in ratings of 20 20A, 25A, 30A current fuse to 40 Amperes • Fully compatible with • UL Recognized UL/CSA/ lead-free solder alloys NMX 248-1 and UL/CSA/ and higher temperature NMX 248-14 profiles associated with • Conforms to EN 60127-1 lead-free assembly and EN 60127-7 • RoHS compliant and • Conforms to DENAN’s Agency Approvals Halogen Free Appendix 3 Agency Agency File Number Ampere Rating Applications E10480 20A - 40A • Voltage regulator module • Basestation power J50446929 20A - 40A for PC server supply PES NBK030308-JP1021 20A - 30A • Cooling fan system for 29862 20A - 40A PC server • Storage system power Electrical Characteristics Additional Information % of Opening Time Ampere Rating 100% 4 hours, Minimum 200% 60 seconds, Maximum Datasheet Resources Samples Electrical Specifications Max Nominal Nominal Agency Approvals Ampere Interrupting Nom Voltage Amp Code Voltage Cold Resistance Melting Rating (A) Rating Drop (mV) PS Rating (V) (Ohms) I2t (A2 Sec.) E 100A @125VAC 300A @ 65VAC 20 020. 125 300A @ 100VDC 0.00230 18 64.7 x x x x 1000A @ 32VDC 500A @ 72VDC 100A @ 125VAC 300A @ 65VAC 25 025. 125 0.00192 45 68.38 x x x x 500A @ 72VDC 1000A @ 32VDC 100A @ 125VAC 300A @ 65VAC 30 030. 125 0.00132 81 69.9 x x x x 1000A @ 32VDC 500A @ 72VDC 180A @ 72VDC 40 040. 72 0.00105 191 55 x x - x 600A @ 60VDC 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. 3. I2t values stated for 1 msec opening time. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/22/19

Surface Mount Fuses NANO2® > Very Fast Acting Fuse > 456 Series Temperature Re-rating Curve Average Time Current Curves A AA A 0500 60 1000 2234 G N ATI 40 UPR NT OF 20 PERCE 0 0 NG 100 ATI 20 UPR N W O 40 NT OF D DS 10 60 PERCE ECON -60°C -40°C -20°C 0°C 20°C 40°C 60°C 80°C 100°C 120°C 140°C N S -76°F -40°F -4°F 32°F 68°F 104°F 140°F 176°F 212°F 248°F 264°F E I AMBIENT TEMPERATURE 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 1 10 100 1000 CURRENT IN AMPS 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 (T ) 200°C Ramp-up TL to TP s(max) - Time (Min to Max) (ts) 60 – 180 secs TL t Average ramp up rate (Liquidus Temp (TL) to peak 5°C/second max. eTS(max) L TS(max) to TL - Ramp-up Rate 5°C/second max. ruta Ramp-down - Temperature (T) (Liquidus) 217°C re Preheat Reflow L pmTS(min) - Temperature (t) 60 – 150 seconds e t L T S 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 Time Ramp-down Rate 5°C/second max. (t 25ºC to peak) Time 25°C to peak Temperature (T) 8 minutes max. P Do not exceed 260°C © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/22/19

Surface Mount Fuses NANO2® > Very Fast Acting Fuse > 456 Series Product Characteristics Body: Ceramic Operating Temperature -55OC to 125OC with proper derating Materials Cap: Silver Plated Brass MIL-STD-202, Method 107, Test Condition B Thermal Shock Product Marking Body: Brand Logo, Current Rating (5 cycles -65OC to 125OC) MIL-STD-202, method 302, Test Condition A Vibration MIL-STD-202, Method 201 (10-55 Hz) Insulation Resistance (10,000 ohms, Minimum) Moisture Sensitivity Level J-STD-020, Level 1 Solderability MIL-STD-202, Method 208 MIL-STD-202 Method 106, Resistance to Soldering MIL-STD-202, Method 210, Moisture Resistance High Humidity (90-98%RH), Heat (65OC) Heat Test Condition B (10 sec at 260OC) MIL-STD-202, Method 101, Salt Spray Min. copper layer thickness = 100µm Test Condition B Min. copper trace width =20A, 30 MIL-STD-202, Method 213, 10mm (20A, 30A) / 15mm (40A) Mechanical Shock Test Condition I (100 G’s peak for 6 PCB Recommendation for milliseconds) Alternate methods of thermal management Thermal Management may be used. In such cases, under normal operations, the maximum temperature of the fuse body should not exceed 90OC in a 25OC environment. Dimensions Part Numbering System 20A, 25A, 30A: 3.05 3.25 0456 020. E R 10.08 [.12”] (.128”) (.397”) F 20 A 6.10 Series (.240”) Amp Code (3.1.025”) 1(0.7.006 t7y”p) (1.429.660”) 3.43 Refer to Electrical (.135”) characteristics table Recommended Pad Layout Quantity code E = 2500 pcs 40A: D = 1500 pcs (1.24.9520) (4.1.47455”) Packaging code R = Tape and Reel F 40 A (4.1.47455”) 2.173 2.79 (.086”) (.110”) Packaging Packaging Packaging Quantity & Rating Quantity Option Specification Packaging Code 0.30 20A, 25A, 24 mm Tape (.012”) EIA RS-481-2 2500 ER 3.79 30A and Reel (.149”) 24 mm Tape EIA RS-481-2 (IEC 40A 1500 DR and Reel 286, part 3) (.52.2752”) (.52.2625”) Recommended Pad Layout 13.3 (.524”) 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: 11/22/19