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 •External dimension : : : : : •Overtone order •Applications 32.768 kHz (32 kHz to 100 kHz) 7.0 × 1.5 × 1.4 t (mm) ···MC-146 7.1 × 3.3 × 1.5 t (mm) ···MC-156 Fundamental Small communications devices Actual size MC-146 MC-156 Specifications (characteristics) Item Symbol Nominal frequency range Temperature range 32.768 kHz T_stg -55 °C to +125 °C Operating temperature T_use -40 °C to +85 °C f_tol Store as bare product after unpacking 1.0 μW Max. DL Frequency tolerance (standard) ± 20 × 10-6, ± 50 × 10-6 Ti +25 °C ± 5 °C Parabolic coefficient B -0.04 × 10-6 / °C2 Max. Load capacitance CL Motional resistance (ESR) R1 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 f_age ±3 × 10-6 / year Max. ±5 × 10-6 / year Max. +25 °C, DL=0.1 μW 7 pF, 9 pF, 12.5 pF 65 kΩ Max. 0.5 μW Max. Operating Drive level ± 50 × 10-6, ± 100 × 10-6 Turnover temperature Frequency aging Remarks Please contact us for inquiries regarding available frequencies 32 kHz to 100 kHz Storage temperature Level of drive Please specify 65 kΩ to 25 kΩ +25 °C, First year External dimensions (Unit:mm) MC-156 #1 6.7 7.0 Max. EA9 6 #2 #1 0.1 #3 #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) 7.1 Max. #4 3.3 Max. 0.3 EA9 9 Internal connection (TOP VIEW) #4 #3 1.5 Max. 0.55 #3 2.50 #4 1.5 Max. 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 f_nom 1.2 5.1 1.2 http://www.epsontoyocom.co.jp 1.2 3.88 1.2