Crystal unit Product Number (please contact us) MC-146 : Q1xMC1462xxxx00 MC-156 : Q1xMC1562xxxx00 kHz RANGE CRYSTAL UNIT MC - 146 / MC - 156 Frequency range : 32.768 kHz (32 kHz to 100 kHz) External dimension : 7.0 1.5 1.4 mm MC-146 : 7.1 3.3 1.5 mm MC-156 Overtone order : Fundamental Applications : Small communications devices Actual size MC-146 MC-156 Specifications (characteristics) Item Symbol Specifications Conditions / Remarks Nominal frequency range f nom 32.768 kHz 32 kHz to 100 kHz Please contact us about available frequencies. Storage temperature T stg -55 C to +125 C Storage as single product. Operating temperature T use -40 C to +85 C Level of drive DL 1.0 W Max. Operating Drive level 0.5 W Max. -6 -6 -6 -6 Frequency tolerance (standard) f tol 20 10 , 50 10 50 10 , 100 10 +25 C, DL=0.1 W Turnover temperature Ti +25 C 5 C -6 2 Parabolic coefficient B -0.04 10 / C Max. Load capacitance CL 7 pF, 9 pF, 12.5 pF Please specify 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 C0 0.8 pF Typ. 1.2 pF to 0.5 pF -6 -6 Frequency aging f age 3 10 / year Max. 5 10 / year Max. +25 C, First year Product name MC-146 32.768000kHz 12.5 +20.0-20.0 (Standard form) -6 Model Frequency Load capacitance(pF) Frequency tolerance( 10 , +25 C) External dimensions (Unit:mm) . MC-146 MC-156 Internal connection 7.1 Max. Internal connection (TOP VIEW) 4 3 4 3 (TOP VIEW) 4 3 4 3 E A 9 9 E A 9 6 2 1 6.7 1 2 1 2 7.0 Max. 0.1 0.1 1 2 0.4 0.4 0.4 5.08 0.2 0.2 (0.75) 1.6 (0.75) 1 2 4 3 0.2 Do not connect 2 and 3 to external device. The metal case inside of the molding compound may be exposed on the top or bottom of this product. This purely cosmetic and does not have any effect on quality, reliability or electrical specs. Footprint (Recommended) (Unit:mm) MC-146 MC-156 1.2 1.2 5.1 1.2 3.88 1.2 0.6 0.6 0.55 0.3 0.3 0.25 0.3 0.15 1.5 Max. 1.4 Max. 2.50 1.30 1.5 Max. 3.3 Max. 1.5 1.0 1.5