euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 1460 230000 fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk through-hole crystals hc35 crystals (to5) frequency range: 8.0mhz to 250mhz oscillation mode: see table calibration tolerance at 25oc: from 3ppm frequency stability over temp: from 3ppm (see table) operating temperature range: from 0~+50 to -55~+125c shunt capacitance (c0): 4pf maximum (see table) load capacitance (cl): series or from 8pf to 32pf (customer specified cl) motional capacitance (c1): see table effective series resistance: see table ageing: 2ppm max 1st year, 1ppm typical per year after drive level: 100uw maximum shock: 100g/6ms vibration: 10g/1.5mm, 10~500hz, 3 axis holder: resistance-weld, hermetic seal supply format: bulk pack description general specification features outlines and dimensions part number generation hc35 crystal part numbers are derived as follows: example: 16.000mhz hc35/10/20/10/30pf/atf frequency package = hc35 calibration tolerance at 25c ppm temperature stability ppm operating temperature range lower figure of temp. range e.g. ?10? = -10~+60c ?20? = -20~+70c circuit condition (cl in pf or series) mode - atf (at-cut, fundamental) - at3 (at-cut, 3rd overtone) - at5 (at-cut, 5th overtone) - at7 (at-cut, 7th overtone) - at9 (at-cut, 9th overtone) operating temp. c temperature stability (ppm) 3 frequency stability over temperature 5 7 10 20 25 30 0 to +50 -10 to +60 -20 to +70 x -30 to +80 x x x -40 to +90 x x x -55 to +105 x x x x x -55 to +125 x x x x x x wide frequency range small profile, low-mass package close tolerances easily achieved fully customisable specification industry-standard package hc35 crystals are used in communications, aerospace and defence applications the crystal blank used in hc35 packages is capable of being manufactured to close tolerances and is readily produced with custom frequencies and specifications. 50 8.0~9.9 at fund. 80 2.5 10.0~10.99 at fund. 60 3.0 11.0~12.9 at fund. 40 4.0 13.0~45.0 at fund. 25 4.0 30.0~50.0 at 3rd ot 40 4.0 50.1~100.0 at 5th ot 50 4.0 80.0~200 at 7th ot 70 4.0 150~250 at 9th ot 120 4.0 frequency (mhz) crystal cut osc. mode esr (max) (ohms) oscillation mode, esr & shunt capacitance c0 (pf) motional capacitance (c1)
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