043803.5WRA

Surface Mount Fuses Ceramic Fuse > 438A Series 438A Series – 0603 Fast-Acting Fuse RoHS Pb Description The 438A series AECQ-compliant fuses are specifically tested to cater secondary circuit protection needs of compact auto electronics application. The general design ensures excellent temperature stability and performance reliability. The high I²t values which is typical in the Littelfuse ceramic fuse family ensure high inrush current withstand capability. Features • Operating Temperature from -55ºC to +150ºC Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 0.250A – 6A 29862 0.250A – 6A Electrical Characteristics for Series % of Ampere Rating Ampere Rating Opening Time at 25ºC 100% 0.250A – 6A 4 Hours, Minimum 250% 0.250A – 6A 5 Seconds, Maximum • 100% Lead-free, RoHS compliant and Halogenfree • Suitable for both leaded and lead-free reflow/wave soldering • Meets Littelfuse's Automotive qualifications* * Largely based on Littelfuse internal AECQ-200 test plan. Applications • Li-ion Battery • TFT Display • LED Head-Lights • Battery Management System (BMS) • Automotive Navigation System • Clusters Additional Information Datasheet Resources Samples Electrical Specifications by Item Ampere Max. Amp Rating Voltage Code (A) Rating (V) 0.25 0.375 0.5 0.75 1 1.25 1.75 2 2.5 3 3.5 4 5 6 .250 .375 .500 .750 001. 1.25 1.75 002. 02.5 003. 03.5 004. 005. 006. 63VDC 63VDC 63VDC 63VDC 63VDC 63VDC 32VDC 32 32 32 32 32 32 24 Interrupting Rating (AC/DC)1 50A @ 63VDC 50A @ 32VAC 50A@32VAC/32VDC 50A @ 32VDC/12VAC 50A @ 24VDC/12VAC Nominal Nominal Nominal Voltage Nominal Power Resistance Melting I2t Drop At Rated Dissipation At (Ohms)2 (A2Sec.)3 Current (V)4 Rated Current (W) 2.218 1.247 0.829 0.466 0.310 0.200 1.405 0.0490 0.0364 0.0264 0.0210 0.0177 0.0127 0.0086 0.0017 0.0041 0.0100 0.0281 0.0593 0.0510 0.1440 0.181 0.240 0.439 0.647 0.730 0.747 1.444 0.550 0.488 0.486 0.378 0.351 0.365 0.360 0.107 0.095 0.093 0.082 0.079 0.074 0.072 0.138 0.183 0.243 0.284 0.351 0.456 0.540 0.214 0.238 0.279 0.287 0.316 0.370 0.432 Agency Approvals x x x x x x x x x x x x x x x x x x x x x x x x x x x x Notes: 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msec. 2. Nominal Resistance measured with < 10% rated current. 3. Nominal Melting I²t measured at 1 msec. opening time. Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated continuously at no more than 80% rated current. See “Temperature Re-rating Curve”for additional re-rating information. Devices designed to be mounted with marking code facing up. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. © 2017 Littelfuse, Inc. Specifications are subject change recommended. without notice. Specifications are subject to change without notice. Application testing istostrongly Revised: 12/06/17 Surface Mount Fuses Ceramic Fuse > 438A Series 1.75A 2A 2.5A 3A 3.5A 4A 5A 6A 120 100 10 80 60 40 -65 -45 -25 -5 15 35 55 75 95 115 135 155 TEMPERATURE (°C) TIME IN SECONDS PERCENT OF RATING 100 .750A 1A 1.25A 140 .250A Average Time Current Curves .375A .500A Temperature Re-rating Curve 1 0.1 Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation. 0.01 Example: For continuous operation at 75 degrees celsius, the fuse should be rerated as follows: I = (0.80)(0.85)IRAT = (0.68)IRAT 0.001 0.1 1 10 100 CURRENT IN AMPERES Soldering Parameters Pb – free assembly Pre Heat - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 seconds Average Ramp-up Rate (Liquidus Temp (TL) to peak) 3°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak Temperature (tp) 10 – 30 seconds Ramp-down Rate 6°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Wave Soldering 260°C, 10 seconds max. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/06/17 tP TP Critical Zone TL to TP Ramp-up TL TS(max) Temperature Reflow Condition tL Ramp-down TS(min) 25 Preheat tS time to peak temperature (t 25ºC to peak) Time Surface Mount Fuses Ceramic Fuse > 438A Series Product Characteristics Body: Advanced Ceramic Terminations: Ag/Ni/Sn (100% Lead-free) Element Cover Coating: Lead-free Glass Materials Moisture Sensitivity Level IPC/JEDEC J-STD-020, Level 1 Solderability IPC/EIC/JEDEC J-STD-002, Condition C Humidity Test MIL-STD-202, Method 103, Conditions D High Temperature MIL-STD-202 Method 108 with exemptions Storage Thermal Shock Test JESD22 Method JA-104, Test Conditions B and N Biased Humidity MIL-STD-202 Method 103, 85°C/85% RH with 10% operating power for 1000 hrs Operational Life MIL-STD-202 Method 108, Test Condition D Thermal Shock MIL-STD-202, Method 107, Condition B Mechanical Shock MIL-STD-202, Method 213, Condition A Resistance To Solvents Mechanical Shock High Frequency Vibration Resistance To Soldering Heat Vibration MIL-STD-202, Method 201 Solderability JESD22-B102E Method 1 Vibration, High Frequency Dissolution of Metallization Terminal Strength MIL-STD-202, Method 204, Condition D Terminal Strength For SMD AEC Q200-006 Board Flex AEC Q200-005 Electrical Characterization 3 Temperature Electrical Characterization Resistance to Solder Heat Moisture Resistance MIL-STD-202, Method 210, Condition B MIL-STD-202, Method 106 IPC/EIC/JEDEC J-STD-002, Condition D IEC 60127-4 Dimensions MIL-STD-202 Method 215 MIL-STD-202 Method 213, Test Condition C MIL-STD-202, Method 204 MIL-STD-202 Method 210, Test Condition B Part Marking System 1.575±0.152 [0.062 ± 0.006] 0.85 ± 0.150 [0.033 ± 0.006] 0.530 +/- 0.150 [0.021 +/- 0.006] 0.508±0.102 [0.02±0.004] Amp Code Marking Code .250 D .375 E .500 F .750 G 001. H 1.25 J 1.75 L 002. N 02.5 O 003. P 03.5 R 004. S 005. T 006. U 0.432 +/- 0.150 [0.017 +/- 0.006] Part Numbering System 0.60 [0.024] 0.74 [0.029] 0438 005. W R SERIES 1.00 [0.039] A AEC-Q200 QUALIFIED PACKING CODE AMP CODE R = Reel Pack QUANTITY CODE 1.94 [0.076] W = 3000 pcs © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/06/17 Surface Mount Fuses Ceramic Fuse > 438A Series Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel EIA-481, IEC 60286, Part 3 3000 WR Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/06/17