Surface Mount Fuses Ceramic Fuse > 440A Series 2 RoHS Pb 440A Series, 1206 High I t Fuse Description The 440A Series AEC-Compliant fuses are specifically tested to cater to secondary circuit protection needs of compact auto electronics applications. The general design ensures excellent temperature stability 2 and performance reliability. This high I t fuse series is designed to have ultra high inrush current withstand capability to avoid nuisance fuse open. Features 2 Operating Temperature Ultra high I t values from -55C to +150C Fast response to faulty 100% Lead-free, RoHS current to ensure over- Agency Approvals compliant and Halogen-free current protection to sensitive electronic Meets Littelfuses Agency Agency File Number Ampere Range component automotive qualifications* * - Largely based on Littelfuse internal AEC-Q200 test plan. E10480 0.500A - 8A 29862 0.500A - 8A Applications Li-ion Battery TFT Display LED Lighting Battery Management Electrical Characteristics for Series System (BMS) Automotive Navigation % of Ampere System Cluster Ampere Rating Opening Time at 25C Rating 0.50A - 0.75A Additional Information 100% 4 hours, Minimum 1.75A - 8A 0.50A - 0.75A 350% 5 secs., Maximum 1.75A - 8A Datasheet Resources Samples Electrical Specifications by Item Agency Approvals Ampere Nominal Nominal Nominal Voltage Nominal Power Amp Max. Voltage Interrupting Rating 2 Rating Resistance Melting I t Drop At Rated Dissipation At Rated 1 Code Rating (V) (AC/DC) 2 2 3 4 (A) (Ohms) (A Sec.) Current (V) Current (W) 0.5 .500 63 0.8140 0.02642 0.4831 0.242 x x 50A 63VAC/DC 0.75 .750 63 0.4624 0.09312 0.3983 0.299 x x 1.75 1.75 63 0.0450 0.3312 0.0777 0.136 x x 2 002. 63 0.0385 0.4326 0.0792 0.158 x x 2.5 02.5 63 0.02850 0.8191 0.0747 0.187 x x 3 003. 63 0.02252 1.232 0.0742 0.223 x x 3.5 03.5 63 50A 32VAC/63VDC 0.01845 1.789 0.0757 0.265 x x 4 004. 63 0.01553 2.601 0.0709 0.284 x x 5 005. 63 0.0120 4.761 0.0654 0.327 x x 7 007. 63 0.00753 8.464 0.0696 0.487 x x 8 008. 63 0.00634 12.95 0.0655 0.524 x x Notes: 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated voltage with time constant < 0.8 msec. continuously at no more than 80% rated current. See Temperature Derating Curvefor additional derating 2. Nominal Resistance measured with < 10% rated current. information. 3. Nominal Melting It measured at 1msec. opening time. Devices designed to be mounted with marking code facing up. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. 2020 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: GD. 10/23/20Surface Mount Fuses Ceramic Fuse > 440A Series Temperature Rerating Curve Average Time Current Curves 100 140 120 100 10 80 60 1 40 -65 -45 -25 -5 15 35 55 75 95 115 135 155 TEMPERATURE (C) 0.1 Note: 1. Rerating depicted in this curve is in addition to the standard derating of 20% for continuous operation. Example: For continuous operation at 75 degrees celsius, the fuse should be derated as follows: 0.01 I = (0.80)(0.85)I = (0.68)I RAT RAT 0.001 0.11 10 100 1000 CURRENT IN AMPERES Soldering Parameters Reflow Condition Pb-free assembly t P - Temperature Min (T ) 150C s(min) T P Critical Zone Ramp-up T to T L P Pre Heat - Temperature Max (T ) 200C s(max) T - Time (Min to Max) (t ) 60 180 seconds s L t L T S(max) Average Ramp-Up Rate (Liquidus Temp (T ) L 3C/second max. to peak) Ramp-down Preheat T to T - Ramp-up Rate 5C/second max. S(max) L T S(min) - Temperature (T ) (Liquidus) 217C L t S Reflow - Temperature (t ) 60 150 seconds L +0/-5 25 Peak Temperature (T ) 260 C P time to peak temperature Time (t 25C to peak) Time within 5C of actual peak Temperature 10 30 seconds (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. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/23/20 PERCENT OF RATING TIME IN SECONDS 0.5A 0.75A 1.75A 2A 2.5A 3A 3.5A 4A 5A 7A 8A Temperature