ILSI America was incorporated in 1987 to manufacture high frequency oscillators. Today ILSI America offers SMD and leaded crystals and oscillators including tight tolerances and miniature packages as well as resonators and filters. We offer some of the latest technology in advanced products including TCXO (temperature-controlled crystal oscillator), VCXO (voltage-controlled crystal oscillator), TCVCXO (temperature-compensated voltage-controlled crystal oscillator)