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 cx4sm at crystal ultra-miniature smd at-cut crystal 14mhz to 250mhz description cx4sm at crystals provide a reliable and rugged source of high frequencies in an ultra-miniature package. specifications stated are typical at 25c unless otherwise indicated. specifications may change without notice. standard calibration tolerance 1 : 100ppm, or tighter as required load capacitance: 10pf drive level: 200w max. for fr. <50mhz 100w max. for fr. >50mhz frequency stability 1,3 -10 to +70c: 50ppm to 10ppm -40 to +85c: 100ppm to 20ppm -55 to +125c: 100ppm to 30ppm ageing first year 3 : 5ppm max. (better than 1ppm available) shock, survival 4 : 5000g, 0.3ms, ? sine vibration, survival 5 : 10g rms, 10~2000hz swept sine operating temperature range: -10c to +70c (commercial) -40c to +85c (industrial) -55c to +125c (military) storage temperature range: -55 to +125c maximum process temperature: +260c for 20 seconds specification ultra-miniature, low profile (>1.2mm) ceramic package available with glass or cermic lid excellent ageing characteristics high shock and vibration resistance full military testing available packaging options cx4sm at crystals are available either tray packed (<250pcs) or tape and reel (>250 pieces). 16mm tape, 178mm or 330mm reels (eia 418). 1. other tolerances available; contact euroquartz sales. 2. does not include calibration tolerance. frequency stability characteristics follow that of the at thickness-shear mode. 3. 5ppm max. for frequencies below 40mhz. for tighter tolerances contact euroquartz sales. 4. higher shock verion available. 5. per mil-std-202g, method 204d, condition d. random random testing also available. how to order cx4sm at crystals cx4 - s - c - sm1 - 32.0m, 100 / 100 ? / i 's' if special, custom design. otherwise leave blank blank = glass lid c = ceramic lid terminations sm1 = gold plated * sm2 = solder plated sm3 = solder dipped sm4 = solder plated * sm5 = solder dipped * * = lead free frequency m = mhz calibration tolerance @25c (in ppm)* temp. range c = -10 ~ +70c i = -40 ~ +85c m = -55 ~ +125c s = customer specified outline & dimensions features fundamental frequency 14.745mhz 16mhz 20mhz 32mhz 40mhz 80mhz 160mhz 200mhz motional resistance r1 (): 60 75 50 30 30 30 30 40 motional capacitance c1 (ff): 1.4 1.5 1.4 2.5 1.5 1.8 2.5 2.0 quality factor q (k): 120 90 110 70 90 40 20 15 shunt capacitance (c0 (pf): 0.8 0.9 0.9 1.1 1.0 1.0 1.5 1.5 frequency-dependent specification table frequency stability over temperature (in ppm)* *alternative 'total' tolerance (in ppm) sm1 1.14 1.27 sm2 1.17 1.30 sm3 1.22 1.35 sm4 1.17 1.30 sm5 1.22 1.35 glass lid ceramic lid dim. h terminations - plating sm1 gold plated (lead free) sm2 solder plated sm3 solder dipped sm4 solder plated (lead free) sm5 solder dipped (lead free) designation termination
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