TCM1-63AX+ Surface-Mount RF Transformer Mini-Circuits TCM1-63AX+ Surface-Mount RF Transformer offers an ultra-wide bandwidth range of 10MHz to 6000MHz, 0.2W RF power, and 50Ω impedance. This transformer features flat insertion loss, good return loss, and is aqueous washable. One TCM1-63AX+ model covers all telecommunication bands and operates in the -40°C to +85°C temperature range. Mini-Circuits TCM1-63AX+ Surface-Mount RF Transformer is suitable for wideband push-pull amplifiers, differential modulators, and LTE, cellular, Wi-Fi®, and PCS applications.