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 90SMX(n) crystals description 90SMX(n) crystals are miniature surface-mount crystals specifically designed to provide a low-cost and reliable source of real time clock 32.768khz frequency fro mass-marlet applications. the crystals are low-profile and encapsulated in epoxy resin. outline & dimensions nominal frequency: 32.7680khz calibration tolerance at 25oc: 20ppm load capacitance (cl): 12.5pf* equivalent series resistance (esr): 50k ohms drive level: 1.0 microw max. q: 50,000 minimum temperature coefficient: -0.0350.008ppm/c 2 (parabolic) turnover temperature: +255c shunt capacitance: 1.35pf typical ageing: 5ppm max. in first year at 25c insulation resistance: 500m ohm minimum @100vdc crystal cut: x-cut operating temperature range: -40 to +85c storage temerature range: -55 to +125c reflow soldering: 10s maximum at 260c twice or 180s at 230c, once. shock: 5ppm max, free drops x3 from 75cm height onto hard wood surface. packaging: eia tape and reel, 3k pieces/reel rohs status: compliant * other cl (i.e cl = 6pf) is available, check with euroquartz. specification part number and specification stability over temperature x-cut crystal 32.768khz smd 8.7 x 3.8 x 2.5mm frequency 32.768khz inductry-standard package compact and low-profile supplied on eia tape and reel order stock number: ph32768x for 32.768khz 20ppm, 12.5pf
|
