CRS1206-FX-1004ELF 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 supports a wide resistance range from 1 ohm to 1 megohm with ±1% tolerance and ±100 PPM/°C temperature coefficient. Its compact 1206 package (3.10 mm × 1.60 mm × 0.55 mm) and RoHS-compliant tin-plated termination make it suitable for consumer electronics, telecommunications, and power supply applications where surge protection and reliability are critical.