Crystal unit Product Number (please contact us) FC-12D: X1A000111xxxx00 FC-12M: X1A0000x1xxxx00 kHz RANGE CRYSTAL UNIT FC - 12D / FC - 12M Frequency range : External dimensions : : Overtone order : Applications : : 32.768 kHz (32 kHz to 77.5 kHz) 2.05 x 1.25 x 0.35 mm***FC-12D 2.05 x 1.2 x 0.6 mm***FC-12M Fundamental Smart card (Please contact us for except Smart card use.)***FC-12D Small devices***FC-12M Actual size FC-12D FC-12M Specifications (characteristics) Item Symbol Nominal frequency range f_nom Storage temperature Operating temperature T_stg T_use Level of drive Frequency tolerance (standard) Turnover temperature Parabolic coefficient 32.768 kHz Conditions / Remarks 32 kHz to 77.5 kHz 32.768 kHz -55 C to +125 C -40 C to +85 C DL 0.25 W Max. f_tol 20 x 10 -6 +25 C, DL=0.1 W Please ask for tighter tolerance 20 x 10 -6 30 x 10 +25 C 5 C -6 2 -0.04 10 / C Max. CL 7 pF, 9pF, 12.5pF Motional resistance (ESR) R1 75 k Max. 90 k Max. 90 k to 65 k Motional capacitance C1 3.7 fF Typ. 6.4 fF Typ. 7.0 fF to 2.7 fF Shunt capacitance C0 0.8 pF Typ. 1.3 pF Typ. 1.6 pF to 0.8pF Frequency aging 12.5pF Please specify -6 +25 C, First year 3 x 10 / year Max. f_age Product name (Standard form) Please contact us about available frequencies. Storage as single product. 0.5 W Max. -6 Ti B Load capacitance FC-12D 32.768000kHz 12.5 +20.0-20.0 Model Frequency Load capacitance(pF) -6 Frequency tolerance(x 10 , +25 C) External dimensions (Unit: mm) FC-12D #4 #3 #1 #2 A634J 2.050.1 0.9 Internal connection (TOP VIEW) #1 #2 2.050.05 Pin #2 is connected to the device lid. Please connect to GND. Do not connect #4 externally. 0.35 Max. #1 1.20.05 A115J 0.6 Max. 1.250.1 FC-12M 1.0 #2 #1 0.35 #2 #3 #4 0.525 0.495 Footprint (Recommended) FC-12D (Unit: mm) FC-12M *Do not design any circuit patterns in the shaded area. 0.7 1.4 0.55 0.90 0.65 0.35 . Specifications FC-12M FC-12D 1.5 *Do not design any circuit patterns in the shaded area.