In the construction of wirewound resistors, high grade ceramic is capped with iron on each end and the terminals are welded to the caps. During the next production step, a special resistant wire is first welded to one cap and then wound around the ceramic core and finally welded to the other cap. The resistors are lacquered by using several layers of excellent high temperature resistant lacquer to isolate against environmental effects. Before the taping process, all resistors are checked to be certain they fall within tolerance.