DC-0308-050-20SF is a directional coupler that covers 300 MHz to 8 GHz with broadband flat coupling response, high directivity, and excellent return loss performance. Coupling flatness ±0.6 dB typical. Directivity 25dB typical. Return loss 26dB typical. Insertion loss 0.5dB typical. Enclosure measures 6.00 x 0.73 x 0.50 inches with threaded mounting holes. SMA Female connectors. Device is RoHS complaint.