The FH0350-1801SF from Corech Microwave is a RF High Pass Filter with Frequency 3.5 to 18 GHz, Bandwidth 14500 MHz, Insertion Loss 1.8 to 2.5 dB, Power 1 W, Rejection 40 dB @DC-3.2 GHz. Tags: Module with Connectors, Suspended Substrate Filter, Stripline. More details for FH0350-1801SF can be seen below.