PWR263S-20-4R70J is a 20 W D²PAK style power resistor manufactured by Bourns using thick film on alumina ceramic technology, with a resistance value of 4.7 O and ±5% tolerance. The resistor features low inductance (0.1 µH maximum), electrical isolation of the resistor from the backplate, and a thermal resistance of 6.5 °C/W, enabling efficient heat dissipation in demanding applications. It operates across a temperature range of -55 °C to 155 °C with a temperature coefficient of resistance (TCR) of ±100 PPM/°C, and supports a maximum operating voltage of 250 V. The device is AEC-Q200 qualified and RoHS compliant, making it suitable for power supplies, motor drives, test and measurement equipment, and rectifier circuits where reliable current measurement, snubber, bleeder, and discharge functions are required.