The HFD1840-0X1 from Sierra Microwave Technology is a RF Switch with Frequency 18 to 40 GHz, Insertion Loss 4.0 to 4.5 dB, Isolation 50 dB, Supply Voltage -15 to 5 V, Supply Current -70 to 60 mA. Tags: Module with Connectors, Solid State. More details for HFD1840-0X1 can be seen below.