456

Surface Mount Fuses NANO2® > 456 Series 456 Series Fuse Description PS E The High Current NANO2® Fuse is a small square surface mount fuse that is designed to support higher current requirements of various applications. Features current fuse Halogen Free 20 to 40 Amperes Agency Approvals AGENCY AGENCY FILE NUMBER E10480 PS E temperature profiles AMPERE RATING 20A, 30A, 40A 20A, 30A Applications module for PC server PC server NBK030308-JP1021 Electrical Characteristics % of Ampere Rating 100% 200% Opening Time 4 hours, Minimum 60 seconds, Maximum Electrical Specifications Ampere Rating (A) Max Voltage Rating (V) 125 Nominal Interrupting Rating Cold Resistance (Ohms) 100A @125V AC 300A @ 65V AC 300A @ 100V DC 1000A @ 32V DC 100A @ 125V AC 300A @ 65V AC 1000A @ 32V DC Nominal Melting 2 I t (A2 Sec.) Nom Voltage Drop (mV) Agency Approvals PS E Amp Code 20 020. 0.00230 18 64.7 x x 30 030. 125 0.00132 81 69.9 x x 40 040. 60 600A @ 60V DC 0.00105 454 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 10 msec opening time. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/456.html for current information. 65 Revised: September 21, 2009 456 Series 456 Series S Introduction to Circuit Protection Introduction urface Mount Fuses Transientology NANO2® > 456 Series Temperature Rerating Curve Average Time Current Curves 20A 30A 40A 60 PERCENT OF UPRATING 40 100 20 PERCENT OF DOWNUPRATING 0 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 248°F 140°C 264°F TIME IN SECONDS 10 1 0.1 0.01 1 10 100 1000 CURRENT IN AMPERES Soldering Parameters – Reflow Soldering Reflow Condition - Temperature Min (Ts(min)) Pre Heat - Temperature Max (Ts(max)) - Time (Min to Max) (ts) Average ramp up rate (Liquidus Temp (TL) to peak TS(max) to TL - Ramp-up Rate Reflow - Temperature (TL) (Liquidus) - Temperature (tL) 250 °C 5°C/second max. 5°C/second max. 217°C 150°C TP Ramp-up tP Critical Zone TL to TP Temperature 200°C TL TS(max) Preheat tL Ramp-down TS(min) tS 25 time to peak temperature (t 25ºC to peak) Time Peak Temperature (TP) Time within 5°C of actual peak Temperature (tp) Ramp-down Rate Time 25°C to peak Temperature (TP) Do not exceed 5°C/second max. 8 minutes max. 260°C 456 Series 66 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/456.html for current information. Surface Mount Fuses NANO2® > 456 Series Product Characteristics Materials Product Marking Insulation Resistance Solderability Resistance to Soldering Heat Condition A (10,000 ohms, Minimum) Operating Temperature Thermal Shock O O C to 125O C to 125OC) Vibration Moisture Sensitivity Level O C) Moisture Resistance Salt Spray 10mm (20A, 30A) / 15mm (40A) PCB Alternate methods of thermal manage Recommendation for Thermal Management under normal operations, the maxi should not exceed 80OC in a 25OC environment. Mechanical Shock milliseconds) Dimensions 20 A, 30A: 10.10 (.397”) 3.120 [.123”] 3.25 (.128”) Part Numbering System 0456 020. E R SERIES AMP Code 3.43 (.135”) F 20 3.120 (.123”) A 1.70 typ (0.067”) 6.10 (.240”) 12.60 (.496”) Recommended Pad Layout QUANTITY Code 40A: 12.50 (.492) 4.445 (.175”) PACKAGING Code 4.445 (.175”) F 40 2.79 (.110”) A 2.173 (.086”) 0.30 (.012”) 3.79 (.149”) 5.72 (.225”) 5.65 (.222”) Recommended Pad Layout 13.3 (.524”) Packaging Rating 20A, 30A 40A Packaging Option Packaging Specification Quantity 2500 1500 Quantity & Packaging Code © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/456.html for current information. 67 456 Series 456 Series Heat (65OC) Introduction Introduction to Circuit Protection Transientology 68 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.