Y14880R00200B9R

303144, 303145 Models303144 303144 and and 303145 303145 – Fixed Resistors Resistors CSM2512 Models CSM2512and andCSM3637 CSM3637 with Screen/Test Flow in Compliance with EEE-INST-002 (Tables 2A and 3A, Film/Foil, Level 1) MIL-PRF-55342 and MIL-PRF-49465 FEATURES B C R I I A D V Zin INTRODUCTION 303144 and 303145 are low value current sense resistors, providing power and precision in a four terminal, surface mount configuration. Its all welded construction is made up of a Bulk Metal® resistive element with plated copper terminations. The four terminal devices separate the current leads from the voltage sensing leads. This configuration eliminates the effect of the lead wire resistance from points A to B and C to D. Vishay Foil Resistors’ application engineering department is available to advise and make recommendations. Figure 1 – Power Derating Curve Percent of Rated Power • Temperature coefficient: ±20 ppm/°C max. (–55°C to +125°C, +25°C ref.) (see Table 1) • Surface mount configuration • Four terminal (Kelvin) design: allows for precision accurate measurements • Power rating: 1 W to 3 W • Resistance tolerance: ±0.5% • Resistance range: 2 mΩ to 200 mΩ • Bulk Metal® Foil resistors are not restricted to standard values; specific “as required” values can be supplied at no extra cost or delivery (e.g., 2.345 mΩ vs. 2 mΩ) • Short time overload: 0.2% typical • Thermal EMF: 3 μV/°C • Maximum current: up to 38 A • Terminal finish: tin/lead alloy • For prototype units, append a “U” to the model number (example: 303144U). These units have all of the table 2A (page 3) 100% tests performed, with no destructive qualification testing required (table 3A, page 3). For more information, please contact: foil@vpgsensors.com • For oriented performances, please contact: application engineering ~ =∞ + 70 °C 100 80 60 40 20 0 - 65 - 50 - 25 0 25 50 75 100 125 150 170 Ambient Temperature (°C) Table 1 – Specifications PARAMETER Resistance Range 303144 303144-1 303145 303145-1 3 mΩ to 200 mΩ¬ 2 mΩ to 200 mΩ Power Rating at 70°C 1W 3 W (2 mΩ to 10 mΩ) 2 W (>10 mΩ to 200 mΩ) Maximum Current 18 A 38 A Tightest Tolerance Temperature Coefficient Max. (-55°C to +125°C, +25°C ref.) Weight (maximum) 4185-EN Rev 19-Oct-2020 ±0.5% ±20 ppm/°C (3 mΩ to