CRS1206-FW-3R30ELF is a high-power anti-surge chip resistor designed for pulse power and high-voltage applications. It features a 0.5 W power rating at 70°C, a maximum working voltage of 200 V, and a maximum overload voltage of 400 V, with an operating temperature range of -55°C to +155°C. The resistor has a resistance value of 3.30 ohms with ±1% tolerance and a temperature coefficient of ±100 PPM/°C. It is constructed with a ceramic substrate, resistive element, and lead-free tin-plated termination (RoHS compliant), making it suitable for telecommunications, power supplies, and consumer electronics applications where surge protection and reliability are critical.