18 specifications (characteristics) recommended soldering pattern external dimensions series resistance (unit: mm) do not connect #2 and #3 to external device. internal connection (unit: mm) #4 #4 #3 #1 #2 #3 #1 #2 1.2 1.3 2.4 1.3 1.2 3.88 0.4 0.4 5.08 1.8 2.0 max. 2.5 4.1 7.3 max. e. a. 67 thin smd low/medium-frequency crystal unit MC-206 high-density mounting-type smd of max. 2.0 mm thickness. small packaging area and light weight. high heat resistance allows reflow soldering. excellent shock resistance and environmental capability. item nominal frequency temperature range maximum drive level soldering condition frequency tolerance (standard) peak temperature (frequency) temperature coefficient (frequency) load capacitance series resistance motional capacitance shunt capacitance insulation resistance aging shock resistance symbol f t stg t opr gl t sol ? f/f t a c l r 1 c 1 c 0 ir fa s.r. specifications 32.768 khz 32.000 khz to 100.000 khz -55 c to +125 c -40 c to +85 c 1.0 w max. twice at under +260 c within 10 s or under +230 c within 3 min. 20 x 10 -6 , 50 x 10 -6 50 x 10 -6 , 100 x 10 -6 +25 c 5 c -0.04 x 10 -6 / c 2 max. 7 pf, 12.5 pf 55 k ? max. 50 k ? to 20 k ? 1.8 ff typ. 3.0 ff max. 0.9 pf typ. 1.5 pf max. 500 m ? min. 3 x 10 -6 / year max. 5 x 10 -6 / year max. 5 x 10 -6 max. remarks ta=+25 c, dl=0.1 w please specify as per below table ta= +25 c 3 c, first year three drops on a hard board from 750 mm or excitation test with 29400 m/s 2 x 0.3 ms x 1/2 sine wave x 3 directions storage temperature operating temperature actual size frequency (khz) series resistance ( ? ) 32 f < 38 50 k ? max. 38 f < 65.536 40 k ? max. 65.536 f < 75 25 k ? max. 75 f 100 20 k ? max. metal may be exposed on the top of this product. this won't affect any quality, reliability or electrical spec. crystal unit
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