hc-49usx quartz crystal the hc-49usx is the low profile r esistance weld type thru hole quartz crystal. 1105 south ridgeview road z olathe, ks 66062 z phone: 913.782.7787 z fax: 913.782.6991 z www.ecsxtal.com parameters conditions hc-49usx min typ frequency range (mhz) frequency range (mhz) mode of osc mode of osc max esr ? max esr ? height "h" max max operating conditions / el ectrical characteristics equivalent series resist ance/mode of oscillation units fo c o specify in p/n standard @ +25c 3c at +25c standard -10 to +70c frequency range operating temperature storage temperature aging (first year) frequency tolerance frequency stability ref @ 25c shunt capacitance load capacitance (cl) drive level 3.57 10 mhz c c pf pf w ppm ppm ppm 3.57 ~ 3.999 4.000 ~ 4.999 5.000 ~ 5.999 6.000 ~ 6.999 7.000 ~ 8.999 9.000 ~ 12.999 13.000 ~ 19.999 20.000 ~ 30.000 27.000 ~ 70.000 70.000 30 50 7 series 500 -10 -55 +70 +125 5 fundamental fundamental fundamental fundamental fundamental fundamental fundamental fundamental 3rd overtone 200 150 120 100 80 60 40 30 100 3.5 mm 2.5 mm -4lx -4x package dimensions (mm) figure 1) side and top views figure 2) hc-49usx (-4x-3il) 3rd in line lead base side, bottom and end view. part numbering guide: example ecs-200-20-4x custom options cost effective low profile pb free/rohs compliant ecs - frequency abbreviation - load capacitance - package to lerance stability temp range 4x = 3.5 mm 4lx = 2.5 mm 4x-3il =3rd in line lead base a= 25 ppm c= 10 ppm d= 100 ppm e= 50 ppm g= 30 ppm h= 25 ppm k= 10 ppm l= -10 ~ +70c m= -20 ~ +70c n= -40 ~ +85c p= -40 ~ +105c s= -40 ~ +125c u= -55 ~+125c 200 = 20.000 mhz see p/n guide 20 =20 pf s=series 20
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