WH50-R05JI Resistor, Solder Lug, 0.05 ohm, WH Series, 50 W, ± 5%, Solder Lug. The WH series from Welwyn are 50W axial leaded wirewound resistors with solder-dipped copper clad steel terminations. Cap and lead assemblies are fitted to a high purity ceramic substrate. The resistive element is wound onto the substrate and welded to the caps. The wound rod is then moulded and fitted into aluminium housing to give optimum stability and reliability.