specifying surface mount quartz crystals surface mount quartz crystals a typical surface mount quartz crystal specification reads like this: 24.0 1 40mhz 1 2smx-b 1 5 30 20 1 8 f und tr t frequency holder style frequency tolerance at 25c frequency stability lower end of operating temp range circuit condition overtone order packaging additional text code (for non-standard product) the following notes define each element of the specification. frequency frequency is normally specified in kilohertz (khz) up to 999.999khz and in megahertz (mhz) from 1.0mhz. all our computer-generated transaction documents follow this standard convention automatically. the frequency should be described to seven significant figures. if seven significant figures are not used, we assume that any figure that might follow those given may be taken as zero. thus a frequency given as 16.6mhz will be taken as 16.60, not 16.66667. some specifiers extend the use of khz to all crystals operating in fundamental mode, reserving mhz for overtones. to minimise the possibility of misunderstanding it is best to use the standard method and specify fundamental or overtone mode separately. please contact the sales office for details of developed frequencies. holder style before manufacture of the crystal can start, the holder style must be defined. each holder style covers a frequency range which is defined in the relevant specification. frequency tolerance the cost of manufacture depends partly on the accuracy required at reference temperature (which in the case of the at-cut crystal, is usually 25c). where high initial accuracy is important the additional manufacturing cost should be weighed against the cost of including a frequency trimming facility within the oscillator. frequency stability frequency stability is normally specified as a frequency tolerance over a defined operating temperature range with respect to the frequency at reference temperature. the temperature ranges are defined for each crystal in the relevant data sheet. however the majority of crystals will continue to operate quite satisfactorily outside the temperature range for which they are specified, but with a possible degradation in the value of frequency stability. under normal conditions this will not damage the crystal. a crystal designed for operation over a restricted operating temperature range, (such as from 0 to 50c) has a better frequency stability over that range than one designed for operation over a wide operating temperature range. therefore it is important not to over specify the temperature range, as doing so will result in inferior performance for the same or greater cost; or greater cost for the same or inferior performance. operating temperature ranges the standard operating temperature ranges for a crystal are: 0 to 50c ?40 to 90c ?10 to 60c ?55 to 105c ?20 to 70c ?55 to 125c ?30 to 80c when the required temperature range is symmetrical about 25c, it is indicated in the specification by the lower figure, ie: ?20 to 70c would read ?20? as shown in the example. if the required temperature range is not symmetrical about 25c, both figures are used, ie: ?55 to 85c and appear in the additional text code section (t). circuit condition the characters ?sr? are used to denote calibration of the crystal at series resonance. if it is to be calibrated at load resonance the characters represent the circuit load capacitance in pf. packaging codes tray packaging is available as an option for cx-1 products outlined in the sm quartz crystal chapter. unless individual data sheets state bulk packaging, items will be tape & reel packed. please note: only complete reels are sold. bu = bulk packed tr = tape & reel packed ty = tray packed europe tel: +44 (0)1460 270200 fax: +44 (0)1460 72578 websi te: www.cmac.com americas tel: +1 919 941 9333 fax: +1 919 941 9371 asia tel: +86 755 8826 5991 fax: +86 755 8826 5990
surface mount quartz crystals additional text code if the product is non-standard, the letter ?t? will appear at the end of the product specification. this refers to additional text on the quotation/sales order to identify the special requirements. outline drawings dimensions on the crystal outline drawings are shown only as a guide. precise dimensions of crystal holders are available from our factory upon request. all dimensions are shown in mm and are nominal unless otherwise stated. standard frequency tolerances and stabilities 10ppm, 15ppm, 20ppm, 30ppm, 50ppm, 100ppm soldering conditions recommended solder pad layouts are shown on each data sheet. for typical soldering conditions, please see the relevant page in application notes. marking where possible the frequency of operation will be marked in full on the crystal. on the smaller types the full frequency may not fit in the available space and will therefore be truncated. please refer to the despatch packaging for the relevant crystal to see the frequency in full. ordering information see individual data sheets stability conversion chart 10 x ppm % 10 ?3 1000 0.1 10 ?4 100 0.01 10 ?5 10 0.001 10 ?6 1 0.0001 10 ?7 0.1 0.00001 10 ?8 0.01 0.000001 10 ?9 0.001 0.0000001 10 ?10 0.0001 0.00000001 europe tel: +44 (0)1460 270200 fax: +44 (0)1460 72578 websi te: www.cmac.com americas tel: +1 919 941 9333 fax: +1 919 941 9371 asia tel: +86 755 8826 5991 fax: +86 755 8826 5990
stock surface mount quartz crystals surface mount quartz crystals 90smx crystals frequency specification stock no. alpha code packaging 32.7680khz 20/-/-/6 xtal015822 a103l bulk 32.7680khz 20/-/-/6 xtal013015 a103m t & r 32.7680khz 20/-/-/12.5 xtal003004 a103s bulk 32.7680khz 20/-/-/12.5 xtal002998 a103d t & r 86smx crystals frequency specification stock no. alpha code packaging 3.579545mhz 50/100/20/20 xtal003057 a119d bulk 3.579545mhz 50/100/20/20 xtal015056 a119i t & r 3.68640mhz 50/100/20/16 xtal003258 a169b bulk 3.68640mhz 50/100/20/16 xtal010683 a169i t & r 4.0mhz 50/100/20/30 xtal003069 a120c bulk 4.0mhz 50/100/20/30 xtal012280 a120i t & r 4.19430mhz 50/100/20/12 xtal003088 a123c bulk 4.91520mhz 50/100/20/16 xtal003112 a127c bulk 4.91520mhz 50/100/20/16 xtal000006 a127r t & r 6.0mhz 50/100/20/30 xtal003129 a132c bulk 7.37280mhz 50/100/20/16 xtal0003331 a194c bulk 8.0mhz 50/100/20/16 xtal0003149 a140c bulk 8.0mhz 50/100/20/16 xtal0000007 a140r t & r 10.0mhz 50/100/20/20 xtal0003163 a143c bulk 11.05920mhz 50/100/20/20 xtal0003516 l108b bulk 12.0mhz 50/100/20/216 xtal0003209 a158d bulk 12.0mhz 50/100/20/216 xtal010940 a158i t & r 12smx (b) crystals frequency specification stock no. alpha code packaging 8.0mhz 30/50/20/16 xtal026380 a140w bulk 8.0mhz 30/50/20/16 xtal026381 a140x t & r 11.05920mhz 30/50/20/16 xtal026382 a320d bulk 11.05920mhz 30/50/20/16 xtal026383 a320e t & r 12.0mhz 30/50/20/16 xtal026384 a158w bulk 12.0mhz 30/50/20/16 xtal026385 a158x t & r 14.318180mhz 30/50/20/16 xtal026386 a153u bulk 14.318180mhz 30/50/20/16 xtal026387 a153v t & r 14.74560mhz 30/50/20/16 xtal026388 a159w bulk 14.74560mhz 30/50/20/16 xtal026389 a159x t & r 15.360mhz 30/50/20/16 xtal026390 a451d bulk 15.360mhz 30/50/20/16 xtal026391 a451e t & r 16.0mhz 30/50/20/16 xtal026392 a161z bulk 16.0mhz 30/50/20/16 xtal026393 a161x t & r 20.0mhz 30/50/20/16 xtal026394 a147u bulk 20.0mhz 30/50/20/16 xtal026395 a147v t & r 24.5760mhz 30/50/20/16 xtal026396 a223f bulk 24.5760mhz 30/50/20/16 xtal026397 a223g t & r 91smx crystals frequency specification stock no. alpha code packaging 32.7680khz 20/-/-/6 xtal010193 a103r bulk 32.7680khz 20/-/-/6 xtal003001 a103g t & r 32.7680khz 20/-/-/12.5 xtal003003 a103n bulk 32.7680khz 20/-/-/12.5 xtal002999 a103e t & r 85smx crystals frequency specification stock no. alpha code packaging 32.7680khz 20/-/-/6 xtal016178 a103w bulk 32.7680khz 20/-/-/6 xtal017503 a103k t & r 32.7680khz 20/-/-/12.5 xtal003000 a103f bulk 32.7680khz 20/-/-/12.5 xtal016207 a103j t & r frequency specification stock no. alpha code packaging 14.318180mhz 50/100/20/16 xtal003196 a153c bulk 14.318180mhz 50/100/20/16 xtal014422 a153i t & r 14.74560mhz 50/100/20/16 xtal003220 a159c bulk 16.0mhz 50/100/20/16 xtal003232 a161b bulk 16.0mhz 50/100/20/16 xtal010356 a161i t & r 16.0mhz 50/100/20/20 xtal003234 a161d bulk 16.0mhz 50/100/20/sr xtal003235 a161e bulk 16.0mhz 50/100/20/sr xtal0144558 a161w t & r 17.734470mhz 50/100/20/16 xtal003300 a180c bulk 18.4320mhz 50/100/20/20 xtal003175 a146c bulk 20.0mhz 50/100/20/16 xtal003178 a147b bulk 20.0mhz 50/100/20/16 xtal011457 a147i t & r 24.0mhz 50/100/20/16 xtal003321 a189c bulk 24.0mhz 50/100/20/16 xtal012430 a189i t & r europe tel: +44 (0)1460 270200 fax: +44 (0)1460 72578 websi te: www.cmac.com americas tel: +1 919 941 9333 fax: +1 919 941 9371 asia tel: +86 755 8826 5991 fax: +86 755 8826 5990
surface mount quartz crystals hc49/4hsmx crystals frequency specification stock no. alpha code packaging 3.579545mhz 30/50/10/16 xtal003058 a119e bulk 3.579545mhz 30/50/10/16 xtal010218 a119w t & r 3.68640mhz 30/50/10/16 xtal003260 a169e bulk 3.68640mhz 30/50/10/16 xtal003265 a169n t & r 4.0mhz 30/50/10/16 xtal003071 a120e bulk 4.0mhz 30/50/10/16 xtal003078 a120r t & r 4.0mhz 30/50/10/30 xtal011300 a120s bulk 4.0mhz 30/50/10/30 xtal013676 a120h t & r 4.91520mhz 30/50/10/16 xtal003113 a127e bulk 4.91520mhz 30/50/10/16 xtal018153 a127j t & r 5.0mhz 20/50/10/16 xtal026897 a128p bulk 5.0mhz 20/50/10/16 xtal026898 a128r t & r 5.0mhz 30/50/10/30 xtal012312 a128s bulk 5.0mhz 30/50/10/30 xtal012246 a128l t & r 6.0mhz 20/50/10/16 xtal026900 a132p bulk 6.0mhz 20/50/10/16 xtal026901 a132r t & r 7.37280mhz 30/50/10/16 xtal003334 a194f bulk 7.37280mhz 30/50/10/16 xtal015104 a194r t & r 7.37280mhz 30/50/10/30 xtal010689 a194s bulk 7.37280mhz 30/50/10/30 xtal010386 a194g t & r 8.0mhz 30/50/10/16 xtal003151 a140e bulk 8.0mhz 30/50/10/16 xtal010702 a140i t & r 8.0mhz 30/50/10/30 xtal011301 a140s bulk 8.0mhz 30/50/10/30 xtal013919 a140l t & r 8.1920mhz 20/50/10/16 xtal026902 a170w bulk 8.1920mhz 20/50/10/16 xtal026903 a170x t & r 9.83040mhz 20/50/10/16 xtal026904 a173p bulk 9.83040mhz 20/50/10/16 xtal026905 a173r t & r 9.83040mhz 30/50/10/30 xtal017048 a173s bulk 10.0mhz 30/50/10/16 xtal003166 a143g bulk 10.0mhz 30/50/10/16 xtal011400 a143i t & r 10.0mhz 30/50/10/30 xtal017145 a143s bulk 10.0mhz 30/50/10/30 xtal013493 a143l t & r 11.05920mhz 30/50/10/16 xtal003519 l108e bulk 11.05920mhz 30/50/10/16 xtal010880 l108i t & r 12.0mhz 30/50/10/16 xtal003210 a158e bulk 12.0mhz 30/50/10/16 xtal010430 a158r t & r 12.0mhz 30/50/10/30 xtal010043 a158s bulk 12.0mhz 30/50/10/30 xtal005214 a158m t & r frequency specification stock no. alpha code packaging 14.318180mhz 20/50/10/16 xtal026906 a153p bulk 14.318180mhz 20/50/10/16 xtal026907 a153r t & r 14.318180mhz 30/50/10/30 xtal011650 a153s bulk 14.318180mhz 30/50/10/30 xtal016724 a153n t & r 14.74560mhz 20/50/10/16 xtal026908 a321p bulk 14.74560mhz 20/50/10/16 xtal026909 a321r t & r 14.74560mhz 30/50/10/30 xtal012313 a159l bulk 14.74560mhz 30/50/10/30 xtal010878 a159g t & r 16.0mhz 30/50/10/16 xtal003237 a161g bulk 16.0mhz 30/50/10/16 xtal013322 a161v t & r 18.4320mhz 20/50/10/16 xtal026911 a146w bulk 18.4320mhz 20/50/10/16 xtal026912 a146x t & r 19.66080mhz 20/50/10/16 xtal026913 a182w bulk 19.66080mhz 20/50/10/16 xtal026914 a182x t & r 20.0mhz 30/50/10/16 xtal003181 a147e bulk 20.0mhz 30/50/10/16 xtal003187 a147r t & r 20.0mhz 30/50/10/30 xtal017146 a147s bulk 20.0mhz 30/50/10/30 xtal017162 a147g t & r 24.0mhz 30/50/10/16 xtal012504 a189n bulk 24.0mhz 30/50/10/16 xtal019814 a189r t & r 24.5760mhz 30/50/10/20 xtal003387 a223e bulk 24.5760mhz 30/50/10/20 xtal018142 a223r t & r 25.0mhz 30/50/10/16 xtal010595 a187d bulk 25.0mhz 30/50/10/16 xtal022668 a187e t & r 28.2240mhz 30/50/10/16 xtal026915 a224d bulk 29.49120mhz 30/50/10/16 xtal026916 a331d bulk cfpx-56 crystals frequency specification stock no. alpha code packaging 32.768000khz 20/-/-/12.5 xtal008231 a103 x bulk 32.768000khz 20/-/-/12.5 xtal025159 a103y t & r cfpx-157c crystals frequency specification stock no. alpha code packaging 32.768000khz 20/-/-/12.5 xtal009501 a102c bulk 32.768000khz 20/-/-/12.5 xtal009502 a102d t & r europe tel: +44 (0)1460 270200 fax: +44 (0)1460 72578 websi te: www.cmac.com americas tel: +1 919 941 9333 fax: +1 919 941 9371 asia tel: +86 755 8826 5991 fax: +86 755 8826 5990
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