The 50HFFA-XXX-50/18 from JFW Industries are Fixed Attenuators that operate from DC to 18 GHz. They are available in attenuation values from 1 to 40 dB (in 1 dB increments). These attenuators can handle an average input power of 50 W, a peak input power of 1 kW, and a reverse power of 20 W. They are available in modules that measure 4.13 (L) x 2.52 (Dia.) inches with N-type or SMA connectors with a cylindrical heatsink. These attenuators have an operating temperature range from -55°C to +125°C.