Riedon’s thin film power resistors are made by depositing nickel-chrome onto the surface of an alumina substrate. The back of the substrate is then soldered to a heat-dissipating copper plate. This copper plate forms the outside surface of the resistor body and this is where the resistor is attached to an appropriate heatsink. Heat generated within the resistor is released through the copper tab to the outside of the resistor which provides excellent thermal efficiency for a resistor of smaller size. This high tolerance for heat allows the resistors to handle large amounts of power.