High reliability is achieved by using advanced RF mixer' packagings Tape & Reel (TR).Packed in 12-VFQFN Exposed Pad, CSP, the mixer RF is convenient for shipping overseas.12 pins are present on the RF mix.At a temperature around 85°C degrees Celsius, RF mixer shouldbe running.Try searching for the RF mixer with HMC524 if you are looking for variants.Surface Mount is the one that mounts RF fet mixer.