The KSP-5A631R56 from Sangshin is a Phase Locked Loop with Frequency 601 to 661 MHz, Phase Noise -106 dBc/Hz, Output Power 3 dBm, Phase Noise at 1 KHz -80 dBc/Hz, Phase Noise at 1 MHz -142 dBc/Hz. Tags: Surface Mount. More details for KSP-5A631R56 can be seen below.