WS5M3301J is a high surge withstand wirewound resistor from the Bourns WS Series, designed for applications requiring robust surge protection per IEC 61000-4-5 1.2/50 µs standards. This resistor features a 5 W power rating at 70 °C, 5% tolerance, and a temperature coefficient of ±200 ppm/°C. It operates over a wide temperature range of -55 °C to +200 °C and utilizes a low thermal resistant ceramic core with coating material meeting UL 94V-0 requirements. The WS5M model has dimensions of 17.5 ± 1.0 mm (L) × 6.5 ± 1.0 mm (D) with lead wire thickness of 0.75 ± 0.05 mm. Common applications include smart meters, renewable energy systems, industrial equipment, power supplies, and lighting systems where high surge withstand capability is essential.