ES3WR05J is a 3-watt wire-wound power resistor designed for through-hole mounting in electronic circuits requiring low-resistance, high-power dissipation applications. The resistor features a resistance value of 0.05 O with a 5% tolerance and operates at a maximum voltage of 500 V, making it suitable for current-sensing and power distribution circuits. It is constructed with axial leads and copper terminations, measuring 13 × 5.5 mm, and exhibits a temperature coefficient of ±300 ppm/°C for stable performance across varying thermal conditions. The device is wave-solder capable to 265°C and complies with EU RoHS and ELV directives, making it suitable for industrial power electronics, motor control circuits, and precision current-limiting applications where reliable low-resistance performance is essential.