OHMITE WFH Series Wirewound Power Resistors that feature a flat core winding technology that offer superior thermal transfer characteristics. The WFH wirewound power resistors does not require any heat sink compound because of large mounting surface. These resistors have a power rating range from 90W to 330W and a resistance range from 0.22Ω to 39KΩ. WFH resistors are ideal for various applications, including braking systems, dynamic braking, frequency inverter, high-power lighting circuits, and industrial equipment.