0456030.ERG Littelfuse

Surface Mount Fuses 2 NANO > Very Fast Acting Fuse > 456 Series PS RoHS E 456 Series Fuse Description 2 The High Current NANO Fuse is a small square surface mount fuse that is designed to support higher current requirements of various applications. 40A Features Surface mount high RoHS compliant and current fuse Halogen Free Fully compatible with Available in ratings of 20 20A, 25A, 30A lead-free solder alloys to 40 Amperes and higher temperature profiles associated with Agency Approvals lead-free assembly AGENCY AGENCY FILE NUMBER AMPERE RATING Applications E10480 20A - 40A Voltage regulator module Basestation power for PC server supply T50291892 20A - 30A Cooling fan system for PS PC server NBK030308-JP1021 20A - 30A E Storage system power 29862 20A - 40A Additional Information Electrical Characteristics % of Opening Time Ampere Rating 100% 4 hours, Minimum Datasheet Resources Samples 200% 60 seconds, Maximum Electrical Specifications Max Nominal Agency Approvals Ampere Nominal Nom Voltage Amp Voltage Interrupting Cold Rating Melting Drop PS Code Rating Rating Resistance 2 2 E (A) I t (A Sec.) (mV) (V) (Ohms) 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 600A @ 60VDC Notes: 1. Cold resistance measured at less than 10% of rated current at 23C. 2. Agency Approval Table Key: X=Approved or Certified, P=Pending. 2 3. I t values stated for 1 msec opening time. 2017 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 12/14/17 Surface Mount Fuses 2 NANO > Very Fast Acting Fuse > 456 Series Temperature Re-rating Curve Average Time Current Curves 60 1000 40 20 100 0 0 20 40 10 60 -60C -40C -20C 0C 20C 40C 60C 80C 100C 120C 140C -76F -40F -4F 32F 68F 104F 140F 176F 212F 248F 264F AMBIENT TEMPERATURE 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 t Reflow Condition Pb Free assembly P T P Critical Zone Ramp-up T to T L P - Temperature Min (T ) 150C s(min) T L Pre Heat - Temperature Max (T ) 200C s(max) t L T S(max) - Time (Min to Max) (t ) 60 180 secs s Ramp-down Average ramp up rate (Liquidus Temp Preheat 5C/second max. (T ) to peak T L S(min) t S T to T - Ramp-up Rate 5C/second max. S(max) L - Temperature (T ) (Liquidus) 217C L 25 Reflow time to peak temperature - Temperature (t ) 60 150 seconds L Time (t 25C to peak) +0/5 Peak Temperature (T ) 260 C P Time within 5C of actual peak 20 40 seconds Temperature (t ) p Ramp-down Rate 5C/second max. Time 25C to peak Temperature (T ) 8 minutes max. P Do not exceed 260C 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/17 PERCENT OF UPRATING PERCENT OF DOWNUPRATING TIME IN SECONDS 20A 25A 30A 40A Temperature