The HES880A from BOWEI Integrated Circuits is a Voltage Controlled Oscillator with Frequency 25 to 50 MHz, Power 10 mW, Tuning Sensitivity 2 to 4 MHz/V, Tuning Voltage 1 to 14 V, Phase Noise -143 to -123 dBc/Hz. Tags: Surface Mount. More details for HES880A can be seen below.