general description the cx-2 at-cut quartz crystal is a high quality, miniature resonator, hermetically sealed in a rugged, miniature ceramic package, a quarter the size of an eight pin dual-in-line. the cx-2 crystal is manufactured utilizing a photo-lithographic process, ensuring consistency and repeatability of electrical characteristics. outline and dimensions 6.60 1.27 5.21 a 3 1 2 -02 end lead 1 2 2 3 -03sidelead 1 2 2 3 -04sidelead 5.08 2.54 5.33 2.39 2.39 6.60 6.60 ! ! ! ! ! ! low-profile, hermetically sealed package available with glass or ceramic lid high shock and vibration resistance low ageing custom designs available full military environmental testing available frequency range: motional resistance (r ): motional capacitance (c ): quality factor (q): shunt capacitance (c ): calibration tolerance*: load capacitance: drive level: temperature stability**: ageing, first year: shock, survival***: vibration, survival: operating temperature: storage temperature: process temperature: 9.6mhz to 70mhz fund. 70mhz to 160mhz 3rd o/t see table. see table see table see table a 0.01% (100ppm) b 0.1% c 1.0% 20pf (or other as specified) 500 w max. -10 to +70c from 10ppm -40 to +85c from 20ppm -55 to +125c from 30ppm 5ppm max. 3,000g 0.2ms, ? sine 20g rms 10 - 2,000hz -10~+70c (commercial) -40~+85c (industrial) -55~+125c (military) -55c~+125c lead to package temp. not to exceed 175c glass lid to package seal rim temp. not to exceed 210c specifications are typical at 25c unless otherwise indicated. note: temperature stability characteristics follow that of at-cut thickness-shear mode. * closer calibration available, from 5ppm ** does not include calibration tolerance *** higher shock version available 1 1 0 m specification 1 lr c c 0 1 1 12 r 1 l 1 1 cc 0 mot ional resistance motional capacitance mot ional induct ance shunt capacitance equivalent circuit cx-2 9.6mhz to 160mhz miniature at-cut quartz crystal cx-2 9.6mhz to 160mhz miniature at-cut quartz crystal notes: 1. terminal 1 is electrically connected to terminal 3. 2. lead dimensions: width 0.33mm typical, thickness 0.18mm. 3. a = glass lid - 2.03mm max. ceramic lid - 2.41mm max. frequency 10.0mhz 60 2.8 95 1.4 32mhz 20 7.8 36 2.4 155mhz 50 0.5 41 3.2 cx-2 motional parameters, q and c 0 motional resistance r( ) 1 w motional capacitance c (ff) 1 quality factor ?000s shunt capacitance c (pf) 0 +44(0)1460 230000 +44(0)1460 230001 sales@euroquartz.co.uk www.euroquartz.co.uk telephone: fax: email: web: euro quartz cx miniature crystals page 1of2
cx-2-leaded - bulk pack (standard) tray pack (optional) packaging typical application conventional hcmos pierce oscillator circuit cx-2 9.6mhz to 160mhz miniature at-cut quartz crystal cx-2 9.6mhz to 160mhz miniature at-cut quartz crystal 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. the crystals may be wave soldered, taking proper precautions to avoid desoldering the leads. a slow machine rate or too high a pre-heat temperature or solder bath temperature can damage the crystals. lead to package solder interface temperature should not exceed 175c, and glass lid to package seal rim temperature should not exceed 210c. should the seal rim temperature exceed these limits the package may lose its hermeticity. loss of hermeticity results in a decrease of frequency and increase in motional resistance. order code cx-2 ?s? if special or custom design blank if standard frequency side leads -02 -03 -04 calibration tolerance* @ 25c a, b, c 32mhz -03 temperature range: c = commercial i = industrial m = military s = specify ( a / 25ppm / 50ppm / i ) o.t.=3rd o.t. mode blank = fundamental c = ceramic lid blank = glass lid frequency stability over temperature range total frequency tolerance *for other calibration tolerances enter figure in ppm cx-2 buffer amplifier osc . freq. (fo) c 1 c 2 c s r f r a +44(0)1460 230000 +44(0)1460 230001 sales@euroquartz.co.uk www.euroquartz.co.uk telephone: fax: email: web: euro quartz cx miniature crystals page 2of2
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