euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk euro quartz 12.0~15.999 60 16.0~29.999 50 30.0 ~ 40.0 40 description 74USMX crystals are low profile surface mount crystals with a 50% reduced footprint over the popular 49usmx type crystals. 74umx crystals are ideal for use in low cost, mass-market applications. low profile, reduced size smd crystal reduces footprint of 49usmx crystals by 50% customized parts readily available features outline & dimensions frequency range: 12.0mhz to 40mhz calibration tolerance: 30ppm at 25c standard frequency stability over temp: from 50ppm over -10 ~ +70 storage temperature range: -40 ~ +85c shunt capacitance (c0): 4pf typical, 7pf maximum load capacitance (cl): series or from 10pf to 32pf (customer specified) ageing: 5ppm maximum (ta = 25c, drive 100 m w) drive level: 100 m w maximum reflow soldering: 260c, 10s maximum holder: hermetic seal, resistance weld packaging: eia 24mm tape and reel 3000 pieces per reel rohs status: rohs compliant specification frequency range mhz esr max. equivalent series resistance 74USMX crystals part numbers 12.000mhz 74USMX/25/50/-10+70/18pf example: nominal frequency package calibration tolerance at 25c (ppm) from 10ppm to 25ppm temperature stability over temp. range (ppm) from 25ppm to 100ppm* (* ) operating temp. range (c) load capacitance (10pf to 32pf) 74USMX low profile crystal 12.0mhz to 40.0mhz size comparison 49usmx 74USMX
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