The D21545 from Clear Microwave, Inc is a Power Divider with Frequency 1.5 to 4.5 GHz, Insertion Loss 0.3 to 0.4 dB, Isolation 23 to 24 dB, Input Power 30 W, Amplitude Balance 0.05 dB. Tags: Module with Connectors, Through Hole, Multi-Octave Power Divider. More details for D21545 can be seen below.