0437003.WRA Littelfuse

Surface Mount Fuses Ceramic Fuse > 437A Series RoHS Pb 437A Series 1206 Fast-Acting Ceramic Fuse Description The 437A Series AECQ-Compliant fuses are specifically tested to cater to secondary circuit protection needs of compact auto-electronics applications. The general design ensures excellent temperature stability and performance reliability. In addition to this, the high It values typical of the Littelfuse Ceramic Fuse family ensure high inrush current withstand capability. Features Operating Temperature Fast response to faulty from -55C to +150C current to ensure over- current protection for 100% Lead-free, Halogen- Agency Approvals sensitive electronic Free and RoHS compliant components Agency Agency File Number Ampere Range Meets Littelfuses automotive qualifications* E10480 0.500A 8A * - Largely based on Littelfuse internal AEC-Q200 test plan. 29862 0.500A 8A Applications Li-ion Battery TFT Display Electrical Characteristics for Series LED Lighting Battery Management System (BMS) % of Ampere Automotive Navigation Ampere Rating Opening Time at 25C Rating System Clusters 100% 0.500A 8A 4 hours, Minimum Additional Information 250% 0.750A 8A 5 seconds, Maximum 0.750A 8A 1 second, Maximum 350% 0.500A 5 seconds, Maximum Datasheet Resources Samples Electrical Specifications by Item Agency Max. Ampere Nominal Nominal Nominal Voltage Nominal Power Approvals Amp Voltage 1 2 Rating Interrupting Rating Resistance Melting I t Drop At Rated Dissipation At Rated Code Rating 2 2 3 4 (A) (Ohms) (A Sec.) Current (V) Current (W) (V) 0.500 .500 63 50A 63VAC/DC 0.908 0.018 0.52 0.260 x x 50A 63VAC/DC 0.750 .750 63 0.600 0.064 0.45 0.338 x x 100A 63VDC 1.00 001. 63 0.420 0.100 0.41 0.410 x x 1.25 1.25 63 0.318 0.256 0.40 0.500 x x 1.50 01.5 63 50A 63VAC/DC 0.209 0.324 0.39 0.585 x x 1.75 1.75 63 0.071 0.075 0.27 0.473 x x 2.00 002. 63 0.062 0.144 0.20 0.400 x x 2.50 02.5 32 0.043 0.441 0.15 0.375 x x 3.00 003. 32 0.035 0.506 0.14 0.420 x x 3.50 03.5 32 0.027 0.777 0.13 0.455 x x 4.00 004. 32 50A 32VAC/35VDC 0.022 1.024 0.13 0.520 x x 5.00 005. 32 0.0159 2.30 0.13 0.650 x x 7.00 007. 32 0.0100 5.02 0.13 0.910 x x 8.00 008. 32 0.008 7.23 0.13 1.040 x x Notes: Devices designed to carry rated current for 4 hours minimum. It is recommended that 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting devices be operated continuously at no more than 80% rated current. See Temperature Rating tested at rated voltage with time constant < 0.8 msec. Re-rating Curvefor additional re-rating information. Devices designed to be mounted with 2. Nominal Resistance measured with < 10% rated current. marking code facing up. 3. Nominal Melting It measured at 1 msec. opening time. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. 2019 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 02/07/19Surface Mount Fuses Ceramic Fuse > 437A Series Temperature Re-rating Curve Average Time Current Curves 140 100 120 100 10 80 60 1 40 -65 -45 -25 -5 15 35 55 75 95 115 135 155 TEMPERATURE (C) Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for 0.1 continuous operation. Example: 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 Part Numbering System 0.01 0437 005. W R A SERIES AEC-Q200 QUALIFIED 0.001 AMP CODE PACKING CODE 110100 R = Tape and Reel CURRENT IN AMPERES QUANTITY CODE W = 3000 pcs Soldering Parameters 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 seconds s Ramp-down Average Ramp-up Rate Preheat 5C/second max. (Liquidus Temp (T ) to peak) L T 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 Wave Soldering 260C, 10 seconds max. 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/07/19 PERCENT OF RATING TIME IN SECONDS 0.500A 0.750A 1A 1.25A 1.5A 1.75A 2A 2.5A 3A 3.5A 4A 5A 7A 8A Temperature