euro quartz euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 email: info@euroquartz.co.uk www.euroquartz.co.uk 3.2 x 1.5 x 0.9mm ultra-miniature 32.768khz crystal description EQ156 crystals provide 32.768khz in an ultra-miniature package. the part is designed to provide the smallest possible component size for real-time clock applications. their miniature size and rugged construction make them ideal for battery powered, hand-held equipment. frequency 32.7680khz ultra-miniature package: 3.2 x 1.5 x 0.75mm low mass, rugged construction packaged in standard eia tape and reel outline & dimensions nominal frequency: 32.7680khz calibration tolerance at 25oc: 20ppm operating temperature range: -40 to +85c storae temperature range: -55 to +125c load capacitance (cl): 12.5pf or 7.0pf motional capacitance (c1): 3.6ff typical shunt capacitance (c0): 1.0pf typical equivalent series resistance (esr): 70k ohms drive level: 0.5 micro watt maximum temperature coefficient: -0.04/c 2 maximum turnover temperature: +255c ageing: 3ppm per year insulation resistance: 500 mohm minimum @100vdc crystal cut: x cut reflow soldering: 10s maximum at 260c twice or 180s at 230c, once. packaging: eia tape and reel specification 32.7680 12.5 ph32768f 20/-40+85/80k 32.7680 7.0 ph32768g 20/-40+85/80k frequency (khz) cl (pf) stock number part numbers and specification tolerance (ppm)/ temp. range (c)/ max. esr (ohms) stability over temperature x-cut crystal EQ156 crystals
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