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 description CX1H crystals consist of a high quality tuning fork resonator in a rugged, hermetically sealed ceramic package. CX1H is intended for use in series (two cascaded inverters) oscillator circuits. specifications stated are typical at 25c unless otherwise indicated. specifications may change without notice. frequency range: 10.0khz to 600.0khz standard calibration tolerance*: see table motional resistance (r 1 ): figure 1 max = 10~169.9khz, 2x typical 170~600khz, 2.5x typical motional capacitance (c 1 ): figure 2 quality factor (q): figure 3 min. is 0.25x typical shunt capacitance (c 0 ): 2.0pf max. drive level 10~24.9khz: 1.5w max. 25~600.0khz: 3.0w max. turning point (t 0 )**: figure 4 temperature coefficient (k): -0.035ppm/c 2 ageing, first year: 5ppm max. shock, survival***: 1,000g, 1ms, ? sine vibration, survival***: 20g rms, 10~2000hz operating temperature range commercial: -10 to +70c industrial: -40 to +85c military: -55 to +125c storage temperature range: -55 to +125c maximum process temperature: see package handling notes specification features frequency range 10khz to 600khz high shock resistance low ageing designed for low power applications full mil testing available packaging CX1H crystal * tighter frequency calibration is available. ** other turning point is available *** higher shock and vibration survival is available miniature crystal for series oscillators 10khz to 600khz outline & dimensions 30ppm 50ppm 100ppm 200ppm 16~74.9 75~169.9 170~249 standard calibration tolerance 250~600 frequency range (khz) how to order CX1H leaded crystals CX1H - s - 03 - 32.768k, 30 / i 's' if special, custom design. otherwise leave blank side leads 03 = non rohs compliant 05 = rohs compliant frequency k = khz calibration tolerance @25c (in ppm) temp. range c = -10 ~ +70c i = -40 ~ +85c m = -55 ~ +125c s = customer specified CX1Hcrystals are tray packed as standard.
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 crystal equivalent circuit r1 motional resistance l1 motional inductance c1 motional capacitance c0 shunt capacitance conventional series oscillator circuit figure 1 CX1H typical motional resistance r1 figure 2 CX1H typical motional capacitance c1 figure 3 CX1H typical quality factor (q) figure 4 CX1H typical turning point temperature (to) note: frequency f at temperature t is related to frequency f0 at turning point temperature to by: f-fo fo =k(t-to) 2 turning point temperature CX1H crystal miniature crystal for series oscillators 10khz to 600khz package handling the cx crystal is hermetically sealed in a ceramic package. normal handling and soldering precautions for small, low thermal mass parts are adequate when installing or testing cx crystals. cx crystals may be wave soldered with proper precaution taken to avoid desoldering the leads. a slow machine rate or too high a pre-heat temperature or solder bath temperature may damage the crystals. lead to package solder interface temperature should not exceed 175c, glass lid to package seal rim temperature should not exceed 210c . if the seal rim reaches temperatures above the maximum specified, the package may lose its hermeticity. loss of hermeticity results in a frequency decrease and motional resistance increase.
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