actual size http://www.epsontoyocom.co.jp crystal unit epson toyocom product number (please contact us) MC-146 : q14mc146xxxxx00 mc-156 : q14mc156xxxxx00 khz range crystal unit low profile smd mc - 146 / mc - 156 ? frequency range : 32.768 khz (32 khz to 100 khz) ? external dimension : 7.0 1.5 1.4 t (mm) MC-146 : 7.1 3.3 1.5 t (mm) mc-156 ? overtone order : fundamental a ? pplications : small communications devices MC-146 mc-156 s p ecifications ( characteristics ) item symbol specifications remarks nominal frequency range f_nom 32.768 khz 32 khz to 100 khz please contact us for inquiries regarding available frequencies temperature range storage temperature t_stg -55 c to +125 c store as bare product after unpacking operating temperature t_use -40 c to +85 c level of drive dl 1.0 w max. operating drive level 0.5 w max. frequency tolerance (standard) f_tol 20 10 -6 , 50 10 -6 50 10 -6 , 100 10 -6 +25 c, dl=0.1 w turnover temperature ti +25 c 5 c parabolic coefficient b -0.04 10 -6 / c 2 max. load capacitance cl 7 pf, 9 pf, 12.5 pf please specify motional resistance (esr) r 1 65 k max. 65 k to 25 k motional capacitance c 1 1.9 ff typ. 2.5 ff to 0.6 ff shunt capacitance c 0 0.8 pf typ. 1.2 pf to 0.5 pf frequency aging f_age 3 10 -6 / year max. 5 10 -6 / year max. +25 c, first year external dimensions ( unit:mm ) . #1 #2 #3 #4 2.50 3.3 max. 1.30 1.5 max. (0.75) 1.6 5.08 7.1 max. 0.4 (0.75) mc-156 #1 #2 #4 #3 internal connection (top view) 0.55 6.7 #1 #2 #3 #4 1.5 max. 0.15 1.4 max. #1 0.4 0.1 0.1 7.0 max. 0.3 0.3 #4 #3 #2 0.4 0.25 0.2 0.2 0.2 #1 #2 #4 #3 internal connection (top view) MC-146 metal may be exposed on the top or bottom of this product. this will not affect any quality, reliability or electrical spec. do not connect #2 and #3 to external device. e a 9 9 e a 9 6 foot p rint ( recommended ) ( unit:mm ) MC-146 mc-156 1.2 5.1 1.2 0.6 0.6 0.3 1.2 3.88 1.5 1.5 1.0 1.2
|
