Crystal unit Product Number (please contact us) FC-12D: X1A000111xxxx00 FC-12M: X1A0000x1xxxx00 kHz RANGE CRYSTAL UNIT LOW PROFILE SMD 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, Small devices***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 Please contact us for inquiries regarding available frequency. Store as bare product. -55 C to +125 C -40 C to +85 C DL 0.25 W Max. f_tol 20 x 10 0.5 W Max. -6 +25 C, DL=0.1 W Please ask for tighter tolerance 20 x 10 -6 30 x 10 -6 +25 C 5 C -6 2 -0.04 10 / C Max. Ti B 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 Load capacitance Frequency aging 12.5pF Please specify -6 +25 C, First year 3 x 10 / year Max. f_age External dimensions (Unit: mm) FC-12D #4 #3 #1 #2 E634J 2.050.1 0.9 #1 #2 2.050.05 #2 is connected to cover. Please connect to GND. Do not connect #4 externally. 0.35 Max. #1 Internal connection (TOP VIEW) 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) (Unit: mm) FC-12D FC-12M 0.7 *Do not design any pattern on shaded area. 1.4 0.55 0.90 0.65 0.35 . Specifications FC-12M FC-12D 1.5 http://www.epsontoyocom.co.jp *Do not design any pattern on shaded area.