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Ultra-Miniature RTC Crystal From Euroquartz For Battery and Hand-Held Applications

6 June 2005

Frequency control specialist, Euroquartz has launched a new range of ultra-miniature crystals providing 32.768kHz output for use in real-time clock applications. The devices are housed in surface mount packages measuring just 3.2 x 1.2 x 0.95mm making the crystals ideal for use in battery-powered and hand-held equipment.

Euroquartz EQ157 series crystals are designed to provide the smallest possible component size for real-time clock applications and also feature low mass rugged construction. Nominal frequency is 32.7680kHz with calibration tolerance of ±20ppm at 25 deg C.

Specifications include maximum drive level of 1uW, load capacitance (CL) of 12.5 or 7pF, equivalent series resistance of 65k ohms, temperature coefficient of -0.035/deg C² (parabolic), and shunt capacitance of 1.7pF typical. Ageing is ±5ppm maximum in first year at 25 deg C with operating temperature range from -40 to +85 deg C. Storage temperature range is -55 to +125 deg C.

Suitable for reflow soldering for 10s maximum at 260 deg C twice or 180s at 230 deg C once, the X cut EQ157 series crystals are supplied packaged in bulk in standard EIA tape and reel.

With annual turnover of £3.5million and a current growth rate of 12.5% per annum, Euroquartz group provides major OEMs with a global manufacturing and supply facility for all types of quartz crystals, oscillators, filters and frequency control products.

For more information, please contact: Euroquartz Ltd/Frequency Products Ltd, Blacknell Lane Industrial Estate, Crewkerne, Somerset, TA18 7HE, UK. Tel: +44 (0)1460 230000, Fax: +44 (0)1460 230001, Web: http://www.euroquartz.co.uk

Press enquiries to: Tim Jennings, Marshall Jennings PR Limited, Wyvols Court, Swallowfield, Reading, Berkshire, RG7 1WY, UK. Tel: +44 (0)118 988 0288, Fax: +44 (0)118 988 0388.

Web site: http://www.mjpr.com

Source: PR Web