HS50-1RJ is a heat sink made by Ohmite that is specifically designed for high power applications. It is made of an extruded aluminum housing and has an internal finned design for improved heat dissipation. It has a thermal resistance of 0.9°C/W and is rated for dissipation up to 100 watts. It also features a black anodized finish for enhanced wear resistance. The HS50-1RJ is suitable for use with a variety of Ohmite resistors, including the Ohmite Series HS50, HS100 and HS200 resistors.