The PX-420 crystal oscillator is able to withstand continuous operating temperatures up to +250°C, making it ideal for harsh environment applications including oil and gas down-hole operations. For stability, the component relies on a special doubly rotated quartz resonator and electrode metallization plus silicon on insulator technology for high reliability. Other features include a frequency stability of ±100 ppm and a standard frequency range from 1MHz to 30MHz. For further information and pricing, call VECTRON INTERNATIONAL, Hudson, NH. (888) 328-7661.