The UT2B-1KJ1 is a high-temperature power resistor from the Bourns UT series, designed for applications requiring stable performance in demanding thermal environments. It provides a resistance of 1 kΩ with a tolerance of ±5% and a standard power rating of 3.0 W (Characteristic U). This component features a low temperature coefficient of ±20 PPM/°C and can operate in a wide temperature range from -55 °C to +275 °C. Constructed with a centerless ground ceramic core, all-welded terminations, and a flame-resistant silicone coating, it has a dielectric strength of 1000 VAC and is designed to meet MIL-R-26 / MIL-R-39007 (RW-79) standards, making it suitable for various power applications.