The WR02X304JAL is a surface-mount chip resistor with a resistance value of 300kO (300,000O) with ±5% tolerance, a power of 1/20 watt, and dimensions of 0201 (length: 0.6mm, width: 0.3mm). It is RoHS compliant and was manufactured by Walsin. This resistor is commonly used in power supplies, discharge circuits, and motor control circuits, among other applications.