The MVCO457 from BOWEI Integrated Circuits is a Voltage Controlled Oscillator with Frequency 420 to 494 MHz, Power 1.585 mW, Tuning Sensitivity 25 MHz/V, Tuning Voltage 0.5 to 4.5 V, Phase Noise -130 to -110 dBc/Hz. Tags: Surface Mount. More details for MVCO457 can be seen below.