The D-0540-4 from ET Industries is a Power Divider with Frequency 0.5 to 40 GHz, Insertion Loss 8 dB, Isolation 15 to 16 dB, Input Power 20 W, Amplitude Balance ± 0.6 dB. Tags: Module with Connectors, Stripline Power Divider. More details for D-0540-4 can be seen below.