The MKG003A from BOWEI Integrated Circuits is a RF Switch with Frequency 10 to 200 MHz, Insertion Loss 2.5 to 3.5 dB, Isolation 100 to 110 dB, Supply Voltage -5 to 5 V, Switching Speed 200 ns. Tags: Module with Connectors, Solid State. More details for MKG003A can be seen below.