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 20A, 25A, 30A Agency Approvals AGENCY PS E AGENCY FILE NUMBER AMPERE RATING E10480 20A - 40A T50291892 20A - 30A NBK030308-JP1021 20A - 30A 29862 20A - 40A Features • Surface mount high current fuse • RoHS compliant and Halogen Free • Fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly • Available in ratings of 20 to 40 Amperes Applications • Voltage regulator module for PC server • Basestation power supply • Cooling fan system for PC server • Storage system power Additional Information Electrical Characteristics % of Ampere Rating Opening Time 100% 4 hours, Minimum 200% 60 seconds, Maximum Datasheet Samples Resources Electrical Specifications Ampere Rating (A) Amp Code Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 Sec.) Nom Voltage Drop (mV) 0.00230 18 64.7 x x x x Agency Approvals PS E 20 020. 125 100A @125VAC 300A @ 65VAC 300A @ 100VDC 1000A @ 32VDC 500A @ 72VDC 25 025. 125 100A @ 125VAC 300A @ 65VAC 500A @ 72VDC 1000A @ 32VDC 0.00192 45 68.38 x x x x 30 030. 125 100A @ 125VAC 300A @ 65VAC 1000A @ 32VDC 500A @ 72VDC 0.00132 81 69.9 x x x x 40 040. 72 180A @ 72VDC 600A @ 60VDC 0.00105 191 55 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. 3. I2t values stated for 1 msec opening time. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 06/21/15 x Surface Mount Fuses NANO2® > Very Fast Acting Fuse > 456 Series Average Time Current Curves 1000 40 20 0 20 40 60 -60°C -76°F -40°C -40°F -20°C -4°F 0°C 32°F 20°C 40°C 60°C 80°C 68°F 104°F 140°F 176°F AMBIENT TEMPERATURE 100°C 212°F 120°C 140°C 248°F 264°F 100 TIME IN SECONDS 0 PERCENT OF DOWNUPRATING PERCENT OF UPRATING 60 1A 1.25A 1.6A 2A 2.5A 3.15A 4A 5A 6.3A Temperature Re-rating Curve 10 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 Pre Heat Pb – Free assembly - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 secs Average ramp up rate (Liquidus Temp (TL) to peak 5°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds Peak Temperature (TP) 260+0/–5 °C Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds Ramp-down Rate 5°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C tP TP Critical Zone TL to TP Ramp-up TL Temperature Reflow Condition tL TS(max) Ramp-down TS(min) Preheat tS 25 time to peak temperature (t 25ºC to peak) Time © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/21/15 Surface Mount Fuses NANO2® > Very Fast Acting Fuse > 456 Series Product Characteristics Materials Body: Ceramic Cap: Silver Plated Brass Product Marking Body: Brand Logo, Current Rating Insulation Resistance MIL-STD-202, method 302, Test Condition A (10,000 ohms, Minimum) Solderability MIL-STD-202, Method 208 Resistance to Soldering Heat MIL-STD-202, Method 210, Test Condition B (10 sec at 260OC) Min. copper layer thickness = 100µm Min. copper trace width =20A, 30 10mm (20A, 30A) / 15mm (40A) PCB Alternate methods of thermal manRecommendation for agement may be used. In such cases, Thermal Management under normal operations, the maximum temperature of the fuse body should not exceed 90OC in a 25OC environment. Dimensions Operating Temperature -55OC to 125OC with proper derating Thermal Shock MIL-STD-202, Method 107, Test Condition B (5 cycles -65OC to 125OC) Vibration MIL-STD-202, Method 201 (10-55 Hz) Moisture Sensitivity Level Level 1 J-STD-020 Moisture Resistance MIL-STD-202 Method 106, High Humidity (90-98%RH), Heat (65OC) Salt Spray MIL-STD-202, Method 101, Test Condition B Mechanical Shock MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds) Part Numbering System 20A, 25A, 30A: F 20 A 3.120 (.123”) 0456 020. E R 3.25 (.128”) 3.120 [.123”] 10.10 (.397”) SERIES 6.10 (.240”) 12.60 (.496”) 1.70 typ (0.067”) 3.43 (.135”) Recommended Pad Layout 40A: 4.445 (.175”) 12.50 (.492) F 40 A 4.445 (.175”) AMP Code Refer to Electrical characteristics table QUANTITY Code E = 2500 pcs D = 1500 pcs PACKAGING Code R = Tape and Reel 2.173 (.086”) 2.79 (.110”) 0.30 (.012”) 3.79 (.149”) 5.72 (.225”) 5.65 (.222”) Recommended Pad Layout 13.3 (.524”) Packaging Rating Packaging Option Packaging Specification Quantity Quantity & Packaging Code 20A, 25A, 30A 24 mm Tape and Reel EIA RS-481-2 2500 ER 40A 24 mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1500 DR © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/21/15