Temperature range for rf isolator/circulator

    The thermo is very important indicator for rf isolator/circulator. The operating temperature range of a circulator or isolator is limited by the ferrite materials available. In general the lower the operating frequency the greater the temperature sensitivity an isolator will have. Temperature compensation can be used at some operating frequencies. Catalog units make use of temperature compensation where possible. Operating temperatures from -20°C to +85°C are common although some models are limited to 0 to 50°C. The storage temperature is generally the military range of -20°C to +85°C. Although temperatures of -40°C to +85°C; even to +100°C for  surface mount isolator/ circulator can also be provided.