Surface Mount Fuses Ceramic Fuse > 441 Series 2 RoHS Pb 441 Series 0603 High I t Fuse Description This 100% Lead-free, RoHS compliant and Halogen-free fuse series has been designed specifically to provide over current protection to circuits that see high working ambient temperatures (up to 150C) and high inrush currents. The fuse design ensures excellent temperature stability and performance reliability. This high It fuse series is designed to have ultra high inrush current withstand capability to avoid nuisance fuse open. Features Agency Approvals Operating Temperature Suitable for both leaded AGENCY AGENCY FILE NUMBER AMPERE RANGE from -55C to 150C and lead-free reflow / E10480 2A - 6A wave soldering 100% Lead-free, Halogen- Free and RoHS compliant Ultra high It values 29862 2A - 6A Electrical Characteristics Applications Handheld Electronics Hard Disk Drives % of Ampere Ampere Rating Opening Time at 25C Rating LCD Displays SD Memory Cards 100% 2A - 6A 4 Hours Minimum Battery Packs 350% 2A - 6A 5 Seconds Maximum Electrical Specifications by Item Agency Approvals Ampere Nominal Nominal Nominal Voltage Nominal Power Amp Max. Voltage Interrupting 2 Rating Resistance Melting I t Drop At Rated Dissipation At Code Rating (V) Rating 2 2 3 4 (A) (Ohms) (A Sec.) Current (V) Rated Current (W) 2 002. 32 0.0302 0.3103 0.0551 0.110 X X 2.5 02.5 32 0.0200 0.5520 0.0534 0.134 X X 3 003. 32 0.0158 0.8165 0.0531 0.159 X X 3.5 03.5 32 50 A 32 VDC 0.0117 0.9438 0.0468 0.164 X X 4 004. 32 0.0097 1.2659 0.0475 0.190 X X 5 005. 32 0.0073 1.6287 0.0472 0.236 X X 6 006. 32 0.0056 2.6049 0.0464 0.278 X X Notes: Devices designed to carry out rated current for 4 hours minimum. It is recommended that 1. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msecs. devices be operated continuously at no more than 80% rated current. See Temperature 2. Nominal Resistance measured with < 10% rated current. Re-rating Curvefor additional re-rating information. 3. Nominal Melting It measured at 1 msec. opening time. Devices designed to be mounted with marking code facing up. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. Additional Information Datasheet Resources Samples 2018 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended.Specifications are subject to change without notice. Revised: 02/15/18Surface Mount Fuses Ceramic Fuse > 441 Series Temperature Re-rating Curve Average Time Current Curves 100 140 120 10 100 80 1 60 40 -65 -45 -25 -5 15 35 55 75 95 115 135 155 0.1 TEMPERATURE (C) Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for 0.01 continuous operation. For continuous operation at 75 degrees celsius, the fuse should be rerated as follows: I = (0.80)(0.85)I = (0.68)I RAT RAT 0.001 1 10 100 CURRENT IN AMPERES Soldering Parameters t P Reflow Condition Pb free assembly 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 t s(max) L T S(max) - Time (Min to Max) (t ) 60 180 seconds s Ramp-down Average Ramp-up Rate (Liquidus Temp Preheat 3C/second max. T (T ) to peak) S(min) L 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 Time L (t 25C to peak) +0/-5 Peak Temperature (T ) 260 C P Time within 5C of actual peak 10 30 seconds Temperature (t ) p Ramp-down Rate 6C/second max. Time 25C to peak Temperature (T ) 8 minutes max. P Do not exceed 260C Wave Soldering 260C, 10 seconds max. 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18 PERCENT OF RATING TIME IN SECONDS 2A 2.5A 3A 3.5A 4A 5A 6A Temperature