Crystal unit Product Number (please contact us) MC-146 : Q1xMC146xxxxx00 MC-156 : Q1xMC156xxxxx00 kHz RANGE CRYSTAL UNIT LOW PROFILE SMD MC - 146 / MC - 156 Frequency range External dimension : : : : : Overtone order Applications 32.768 kHz (32 kHz to 100 kHz) 7.0 x 1.5 x 1.4 mm ***MC-146 7.1 x 3.3 x 1.5 mm ***MC-156 Fundamental Small communications devices Actual size MC-146 MC-156 Specifications (characteristics) Item Symbol Nominal frequency range f_nom 32.768 kHz T_stg -55 C to +125 C Operating temperature T_use -40 C to +85 C 1.0 W Max. DL Frequency tolerance (standard) f_tol 20 10 , 50 10 -6 -6 Operating Drive level 50 10 , 100 10 -6 Turnover temperature Ti +25 C 5 C Parabolic coefficient B -0.04 10-6 / C2 Max. -6 Load capacitance CL Motional resistance (ESR) R1 65 k Max. 65 k to 25 k Motional capacitance C1 1.9 fF Typ. 2.5 fF to 0.6 fF Shunt capacitance Frequency aging Conditions / Remarks Please contact us for inquiries regarding available frequencies Store as bare product. 32 kHz to 100 kHz Storage temperature Level of drive 7 pF, 9 pF, 12.5 pF 0.5 W Max. +25 C, DL=0.1 W Please specify C0 0.8 pF Typ. 1.2 pF to 0.5 pF f_age 3 10-6 / year Max. 5 10-6 / year Max. +25 C, First year External dimensions (Unit:mm) MC-156 0.3 EA9 9 #1 6.7 7.0 Max. #3 EA9 6 #2 #1 0.1 Internal connection (TOP VIEW) 7.1 Max. #4 #2 #1 0.4 #1 #3 #1 #2 1.30 0.4 5.08 (0.75) 1.6 (0.75) #2 0.25 #4 0.2 0.15 0.4 0.2 #4 #2 1.4 Max. 0.1 Internal connection (TOP VIEW) #4 #3 3.3 Max. 1.5 Max. 0.55 #3 1.5 Max. #4 2.50 0.3 MC-146 #3 0.2 Do not connect #2 and #3 to external device. Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec. Footprint (Recommended) (Unit:mm) MC-146 1.0 0.6 0.3 1.5 MC-156 1.5 0.6 . Specifications 1.2 5.1 1.2 http://www.epsontoyocom.co.jp 1.2 3.88 1.2