The SR Passives AHP25W-8RJ is a wire-wound resistor with a heatsink for improved dissipating heat, an 8O resistance value, with a 25 Watt maximum wattage rating, ±5% tolerance, temperature coefficient of 50ppm/°C, and a package size of 18.6mm. It is designed for high power applications, with its ability to dissipate heat, and its low temperature coefficient, making it suitable for use in environments with extreme temperatures.