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 7 x 5mm smd, 4 pad or 2 pad description miniature surface-mount mq crystals are produced using a ceramic substrate and fitted with a hermetically-sealed metal lid. the crystals are competitively priced, well-suited to mass-market electronic applications and may also be produced to close tolerances making this crystal a good choice for applications requiring low mass and tight tolerances. there are two package variants, 4 pad and two pad. miniature size: 7.0mm x 5mm x 1.2mm height gold-plated ceramic base with metal seam-welded lid to minimize emi the whole crystal may be grounded tight tolerance of 10pppm for telecommunications use high shock and vibration resistance ideal for pdas, gps, pcmcia and hand-held equipment features outline & dimensions frequency range at-cut fundamental: 6.0mhz to 45.0mhz at-cut 3rd overtone: 30.0mhz to 125.0mhz calibration tolerance at 25oc*: from 5ppm (10, 20 or 30ppm standard) frequency stability -10 to +60c from 5ppm -20 to +70c from 10ppm -40 to +90c from 15ppm -55 to +125c from 20ppm storage temperature: -55~+105c effective series resistance: see table shunt capacitance (c0): 2pf to 4pf typical, 7pf maximum load capacitance (cl): series or from 10pf to 32pf ( customer specified cl ) ageing: <3ppm per year at +25c drive level: 100 m w maximum reflow soldering: 10s maximum, 260c twice or 180s at 230c, once. package: ceramic base, metal lid, hermetic seal packaging: 16mm eia tape and reel 1000 pieces per reel specification 6.0 ~ 11.0 at fund. 60 11.1 ~ 14.0 at fund. 50 14.1 ~ 45.0 at fund. 40 30.0 ~ 40.0 at 3rd ot 100 40.1 ~ 50.0 at 3rd ot 80 50.1 ~ 125 at 3rd ot 90 frequency range mhz crystal cut/ mode esr ohms max. effective series resistance mq & mq2 crystals part number generation 12.000mhz mq/20/30/-10+60/18pf/60r example: nominal frequency package (mq = 4 pad, mq2 = 2 pad calibration tolerance at 25c (ppm) temperature stability over temp. range (ppm) operating temp. range (c) (lower and upper limits) load capacitance (either sr for series or cl in pf) equivalent series resistance (optional - use when special value is required) mq2 mq
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