FC-12M (kHz Range Crystal Units)


  • Frequency range
    32.768 kHz (32 kHz to 77.5kHz)
  • External dimensions
    2.05× 1.2 × 0.6 mm
  • Overtone order
  • Applications
    Small Communication device


Item Symbol Specifications Condition/Remarks
Nominal frequency range f_nom 32.768kHz 32kHz to 77.5kHz Please contact us for inquiries regarding available frequency.
Storage temperature T_stg -55 °C to +125 °C Store as bare product
Operating temperature T_use -40 °C to +85 °C
Level of drive DL 0.5 µW Max.
Frequency tolerance (standard) f_tol ±20 × 10-6
±30 × 10-6
+25 °C,DL=0.1 µW Please ask for tighter tolerance
Turnover temperature Ti +25 °C±5 °C
Parabolic coefficient B -0.04 × 10-8/ °C2 Max
Load capacitance CL 12.5pF Please contact us except 12.5pF
Motional resistance
R1 90 kΩ Max. 90 kΩ to 65kΩ
Motional capacitance C1 6.4 fF Typ. 7.0 fF to 2.7fF
Shunt capacitance C0 1.3 pF Typ. 1.6 pF to 0.8pF
Frequency aging f_age ±3 ×10-6 / year Max +25 °C, First year

Product name (Standard form)


External dimensions


(Unit: mm)

Footprint (Recommended)


(Unit: mm)

Page Top