The ACS-5S-91R-J is an axial leaded, high watt density metal oxide resistor from Ohmite. It is a 0.5 ohm, 5-watt resistor with a maximum temperature rating of 125°C and ±10% tolerance. It features a tin-plated nickel case, epoxy-encapsulated terminals, and a protective cover, making it suitable for a variety of applications, including power and automotive supplies. The resistor is UL 1412 approved, RoHS compliant, and has a life expectancy of 1000 hours at full rated load and an ambient temperature of 25°C.