Crystal unit Product Number (please contact us) MC-146 : Q1xMC1462xxxx00 MC-156 : Q1xMC1562xxxx00 kHz RANGE CRYSTAL UNIT 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 Nominal frequency range Symbol f_nom Storage temperature T_stg -55 C to +125 C Operating temperature T_use -40 C to +85 C Level of drive DL Frequency tolerance (standard) f_tol 1.0 W Max. 20 10-6, 50 10-6 Operating Drive level 0.5 W Max. 50 10-6, 100 10-6 +25 C, DL=0.1 W 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. Product name (Standard form) Conditions / Remarks Please contact us about available frequencies. Storage as single product. Turnover temperature Frequency aging 7 pF, 9 pF, 12.5 pF 65 k Max. Please specify 65 k to 25 k MC-146 32.768000kHz 12.5 +20.0-20.0 Model Frequency Load capacitance(pF) +25 C, First year -6 Frequency tolerance(x 10 , +25 C) External dimensions (Unit:mm) MC-156 0.3 EA99 #1 6.7 7.0 Max. #3 EA96 #2 #1 0.1 Internal connection (TOP VIEW) 7.1 Max. #4 #2 #1 0.4 0.2 #1 #1 #2 1.30 5.08 (0.75) 1.6 (0.75) #2 0.25 #4 #3 0.4 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. 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 1.0 0.6 0.3 1.5 MC-156 1.5 0.6 . Specifications 32 kHz to 100 kHz 32.768 kHz 1.2 5.1 1.2 1.2 3.88 1.2 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Epson: MC-156 32.7680KA-A3:ROHS MC-156 32.7680KA-A:RoHS MC-156 32.7680KA-A0:ROHS