The S4TA-005435E4B from Corech Microwave is a RF Switch with Frequency 0.5 to 43.5 GHz, Insertion Loss 5.5 to 6.5 dB, Isolation 65 to 70 dB, Power 23.01 dBm, Power 0.2 W. Tags: Module with Connectors, Solid State. More details for S4TA-005435E4B can be seen below.