qantek technology corporation phone: +1 877-227-0440 (tollfree) www.qantek.com fax: +1 877-227-0440 (tollfree) info@qantek.com qc3ca series 2.5x3.2 4-pad smd all ceramic crystal unit features ? all ceramic epoxy sealed smd package ? low in height, suitable for thin equipment ? tight tolerance and stability available mechanical dimensions applications ? high density applications ? modem, communication and test equipment frequency stability vs. temperature operating temperature 20ppm 30ppm 50ppm -20 to +70c ?? ? -40 to +85c ?? ? ? standard ? available general speci cations frequency range 12.000 to 48.000mhz (fundamental) frenquency tolerance at 25c 20 to 50ppm (30ppm standard) frequency stability over temperature range see stability vs. temperature table storage temperature -55 to +125c aging per year 5ppm max. load capacitance c l 10 to 32pf and series resonance shunt capacitance c 0 7.0pf max. equivalent series resistance (esr) see esr table drive level 100w typ. (500w max) insulation resistance (m ? ) 500 at 100vdc 15vdc equivalent series resistance (esr) frequency range - mhz ? max. mode of operation 12.000 to 16.000 120 fundamental 16.000 to 25.000 60 fundamental 25.000 to 30.000 50 fundamental 30.000 to 48.000 35 fundamental qc3ca rev. 0.1 part numbering guide qantek code package nominal frequency (in mhz) vibration mode load capacitance operating temperature range frequency tolerance frequency stability packaging q = qantek c3ca = 2.5x3.2 = 4-pad smd 7 digits including the decimal point (f.ie. 12.0000) f = at-fund s = series 12 = 12pf 18 = 18pf 20 = 20pf etc. a = -20 to +70c b = -40 to +85c 2 = 20ppm 3 = 30ppm 5 = 50ppm 2 = 20ppm 3 = 30ppm 5 = 50ppm m = 250pcs tape&reel r = 1000pcs tape&reel example: qc3ca12.0000f12b33r bold letters = recommended standard speci? cation
qantek technology corporation phone: +1 877-227-0440 (tollfree) www.qantek.com fax: +1 877-227-0440 (tollfree) info@qantek.com qc3ca series 2.5x3.2 4-pad smd all ceramic crystal unit tape and reel dimensions marking code guide contains frequency, qantek manufacturing code, production code (month and year) and load capacitance. month codes january a july g february b august h march c september i april d october j may e november k june f december l year codes 2010 0 2011 1 2012 2 2013 3 2014 4 2015 5 load capacitance code in pf pf pn code pf pn code 12 a 20 f 18b22g 8 c 30 h 10 d 32 i 16 e s s example: first line: 12.000 (frequency) second line: qa1a (qantek - january - 2011 - 12 pf) solder re ow pro le environmental speci cations mechanical shock mil-std-202, method 213, c vibration mil-std-202, method 201 & 204 thermal cycle mil-std, method 1010, b gross leak mil-std-202, method 112 fine leak mil-std-202, method 112 qc3ca rev. 0.1 all speci? cations are subject to change without notice.
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