The IQXT-205-3 series from IQD Frequency Products are TCXOs which operate from 13 to 52 MHz. They have a phase noise of -135 dBc/Hz @ 1 kHz and a frequency stability of ±0.5 ppm. These TCXOs produce a clipped sinewave output while operating on supply voltage range from 1.8 to 3.3 V. These SMDs are available in a hermetically sealed package which measures 2 x 1.6 mm.