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 49SMD crystals outline & dimensions description part number format 8.000mhz 49SMD /10/10/-20+70/32/ 30r example: frequency in mhz package 49SMD or 49tsmd calibration tolerance at 25c (ppm) temperature stability over temp. range (ppm) operating temp. range (c) (lower and upper limits) load capacitance (either sr for series or cl in pf) equivalent series resistance (optional - use when special value is required) 1.0mhz to 200.0mhz smd form of hc49 crystals 1.0 ~1.3 sl fund. 5000 2.01 ~ 3.0 at fund. 400 3.01 ~ 3.2 at fund. 200 3.21 ~ 3.5 at fund. 150 3.51 ~ 3.9 at fund. 120 3.91 ~ 5.0 at fund. 100 5.01 ~ 7.0 at fund. 50 7.01 ~ 10.0 at fund. 35 10.0 ~ 30.0 at fund. 25 30.1 ~ 45.0 at fund. 20 24.0 ~ 100 at 3rd ot 40 80.0 ~ 160 at 5th ot 70 110 ~ 250 at 7th ot 120 frequency range mhz crystal cut osc. mode esr max. esr and oscillation mode low-cost, industry-standard crystal unit formed for smd available with close tolerances frequency range 1.0mhz to 200mhz specifications fully customisable 49SMD crystals are long-established, industry-standard hc49 crystals with formed leads and a clip to facilitate surface mounting. the crystals provide a high quality but very low cost source of system clock frequency 49SMD crystals may be produced to very close tolerances. frequency range: 1.0mhz to 200mhz oscillation mode: see table calibration tolerance at 25oc sl-cut (<1.3mhz): from 50ppm at-cut (>1.3mhz): from 3ppm frequency stability over temperature sl-cut (<1.3mhz): from 100ppm -10 to +60c at-cut (>1.3mhz): from 3ppm 0 to +50c (see table) shunt capacitance (c0): 4pf typical, 7pf maximum load capacitance (cl): series or from 8pf to 32pf ( customer specified cl ) ageing: 3ppm maximum, 1st year, 1ppm per year thereafter. drive level: 100 m w typical., 500 m w max. crystal holder: resistance-weld hermetic seal supply format: bulk pack or 'ammo pak' tape. specification 0~+50 -10~+60 -20~+70 x -30~+80 x x x -40~+85 x x x x -55~+125 x x x x x temp. range c 7.5 10 15 20 30 50 100 stability ppm stability over temperature range (at-cut crystals) ( = available, x = not available)
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