Radiation-tolerant SAW oscillators optimised for GEO applications

Q-Tech's space-qualified hybrid SAW oscillators offer 300kRad(Si) radiation tolerance, wide operating temperatures and excellent phase noise floor and low vibration sensitivity.

Q-Tech Corporation, the world’s leading supplier of crystal oscillators for space, military, avionics and high-temperature applications has introduced the QT625S/QT725S series of space-qualified hybrid surface acoustic wave (SAW) crystal oscillators. Offering satellite and spacecraft designers exceptional performance for geosynchronous orbit (GEO), the series also offers engineers a choice for deeper space applications requiring the utmost radiation tolerance.

The 300kRad(Si) radiation-tolerant, sine-wave output QT625S (SAW) and QT725S (VCSO) oscillators are available with user-specified frequencies from 400MHz to 1.3GHz with exceptional frequency stability over a wide operating temperature range (-40°C to +85°C). Low phase noise (-135 dBc/Hz at 10kHz offset and –168 dBc/Hz noise floor) and low vibration sensitivity (less than 2ppb/g) combine to provide stable and reliable operation.

The QT625S/QT725S series is packaged in a hermetically sealed, 20-pin flat-pack 0.625” square, available with straight or formed leads. The devices are screened to MIL-PRF-55310, Level S or Modified MIL-PRF-38534, Class K. The QT725S Series VCSO offers engineers the expanded voltage control capability if desired.

“Q-Tech’s hybrid SAW oscillators have been developed to meet the critical needs of satellite manufacturers for ultra-high-reliability components in arguably the most environmentally stressful environments. We are applying our 35-plus years of knowledge, experience and space heritage to deliver this world-class line of devices.”

Scott Sentz, Q-Tech’s Director of Sales and Marketing

See datasheet: QT625S space-qualified SAW oscillator

See datasheet: QT725S voltage-controlled space-qualified SAW oscillator

For further information about Q-Tech's range of crystal oscillators, UK customers can contact the Wavelength team using the details below.

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