The MFSH490517-100 from Synergy Microwave Corporation is a Frequency Synthesizer with Frequency 4.9 to 5.17 GHz, Step Size 1 MHz, Reference Frequency 10 MHz, Output Power 6 dBm, Supply Voltage 3 to 5 V. Tags: Surface Mount, PLL Frequency Synthesizer. More details for MFSH490517-100 can be seen below.