ecm surface mount crystal ecm electronics limited, penmaen house, ashington, west sussex, rh20 3jr, uk tel: +44(0)1903 892810: fax: +44(0)1903 892738. email: ecm@ecmelectronics.co.uk although we have attempted to accurately reflect the products we market. ecm reserve the right without prior notice to discontinue any product or make design changes we believe necessary. issue 1 ecm 90smx & 91smx parameter 90 & 91smx frequency range 32.768khz calibration tolerance @25 0 c +/-20ppm +/-50ppm +/-100ppm temperature tolerance -0.4ppm/ 0 c 2 operating temperature -40 0 c to +85 0 c storage temp -55 0 c to +125 0 c load capacitance 6pf to (12.5pf standard) esr 55k w max shunt capacitance 1.0pf ( typ) drive level 1.0 m w shock resistance +/-5ppm max ageing +/-5ppm / yr high density mounting excellent shock characteristics competitive prices for volume users industry standard package tape & reel or bulk packaging a b c d e f g 10.41 4.06 3.56 9.40 0.51 0.51 2.54 h i k l 2.7 5.0 0.6 1.7 dimensions in mm
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