WSL12064L000FEA18

• 4 M Ohm (0.004 Ohm) Resistance Value
• Metal Strip Composition for Low Thermal EMF and Low Inductance
• 1 Percent tolerance; 150 Ppm/C Temperature Coefficient
• 250 mW Power Rating per the Attribute Record
• 1206 Imperial / 3216 Metric case, 3.2 Mm X 1.6 mm, 0.635 Mm Height
• -65 C to 170 C Operating Temperature Range
• Lead-free, RoHS compliant, Surface Mount

The Vishay WSL12064L000FEA18 is a 4 m Ohm current sense resistor built with metal strip construction, rated 1 percent tolerance and 150 ppm/C temperature coefficient. The record specifies a 250 mW power rating (note the product name states 0.5 W - confirm the correct rating for your ordering option). It uses a 1206 imperial / 3216 metric surface-mount case measuring 3.2 mm x 1.6 mm x 0.635 mm, is rated -65 C to 170 C, lead-free and RoHS compliant.

Low-value metal strip resistors are placed in series with a load so the voltage across them gives a direct measure of current, feeding a current-sense amplifier or controller. Metal strip construction keeps inductance and thermal EMF low, which preserves accuracy at high di/dt and across temperature swings. At 4 m Ohm the dissipation and voltage burden stay small at tens of amps. Typical applications are automotive battery and motor current monitoring, switch-mode power supply current-mode control, battery management and charger systems, and industrial motor drives.