The DC2250M3500B20C100PN-01 from Dyne Tech is a Directional Coupler with Frequency 500 MHz to 4 GHz, Coupling 20 dB, Coupling Variation ±1.2 dB, Directivity 18 dB, Average Power 100 W. Tags: Module with Connectors. More details for DC2250M3500B20C100PN-01 can be seen below.