Microchip´s OX-401 is an Oven Controlled Crystal Oscillator (OCXO) for standard Communication and Test & Measurement application in a modern hermetically 13x20mm ( DIP) sealed SMD design. Standard Version and for 1588 system optimized version are available with good frequency vs temperature stability ( 10ppb pk-pk) and holdover performance. For fast technical or sales support, please email us at VOP-Support@microchip.com.