Vectron International (VI) has introduced a series of low profile, surface mount, temperature compensated crystal oscillators (TCXOs) available from 1 MHz to 80 MHz. The model TC-350 provides good temperature stabilities and low aging rates in a small surface mount package. The oscillators can achieve an aging rate of < 5 ppm for ten years with stabilities of ± 0.5 ppm over 0°C to 50°C to ± 1.5 ppm over 55°C to 85°C. There is a choice of 3.3 or 5 V DC supply voltage and either TTL or HCMOS outputs. The surface mount package measures 22.86 mm × 17.78 mm × 3.81 mm.