The ACS5S-18K-J is an 18,000-ohm resistor manufactured by Ohmite. It is a through-hole resistor, meaning it is designed to be mounted onto a printed circuit board using soldering. It is made of non-flammable ceramic and has an operating temperature range of -55°C to +275°C. It features a 5W power rating and ±2% tolerance. The internal resistance is guaranteed to be within a range of 17,400 ohms to 18,600 ohms. This resistor is commonly used in temperature sensing, power supplies, and audio applications.