LPR Planar Resistors Ohmite LPR Planar Resistors are encapsulated in an ultra-slim aluminum housed casing and feature easy mounting and UL-approved cables. Ohmite LPR Planar Resistors have a low-profile design and are available in 50W and 100W versions with a maximum operating temperature of +250°C. Ohmite LPR Planar Resistors are designed for applications where space is critical, such as electric vehicles (EV), instruments, drivers, and frequency converters.