RHX Resistors Johanson Dielectrics RHX Resistors offer excellent thermal efficiency and large power handling in a small-sized package. These high power, low inductance resistors are available in power ratings of 35W, 50W, and 100W and resistance values from 0.02Ω to 51kΩ. Johanson Dielectrics RHX Resistors can handle very large power pulses without damage when the pulse widths are 1ms or less. The series is ideal for high-density, compact installations.