The FCPH4210-10 from Synergy Microwave Corporation is a Frequency Synthesizer with Frequency 4.21 GHz, Reference Frequency 10 MHz, Output Power 5 dBm, Supply Voltage 5 to 10 V, Current 35 to 65 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for FCPH4210-10 can be seen below.