FC-135R (kHz Range Crystal Unit Low Profile SMD)


RoHS Compliant
  • Frequency range
    32.768kHz (32kHz to 77.5kHz)
  • External dimensions
    3.2 × 1.5 × 0.80mm
  • Overtone order
  • Applications
    Small communications devices


Item Symbol FC-135R FC-135 Condition/Remarks
frequency range
f_nom 32.768kHz 32.768kHz 32kHz to 77.5kHz Please contact us for inquiries regarding available frequencies.
Storage temperature T_stg -55°C to +125°C Store as bare product.
Operating temperature T_use -40°C to +85°C (+105 °C) Please contact us about +85 °C < T_use
Level of drive DL 0.5µW (1.0µW Max.) Please contact us if you require 1.0µW Max.
Frequency tolerance (standard) f_tol ±20 × 10-6 +25°C,DL=0.1µW Please ask for tighter tolerance
Turnover temperature Ti +25°C ±5°C
Parabolic coefficient B -0.04 × 10-6/ °C2 Max.
Load capacitance CL 7pF, 9pF, 12.5pF Please specify
Motional resistance
R1 50kΩ Max. 70kΩ Max. 70kΩ to 45kΩ
Motional capacitance C1 3.4fF Typ. 3.4fF Typ. 3.7fF to 1.6fF
Shunt capacitance C0 1.1pF Typ. 1.0pF Typ. 1.3pF to 0.5pF
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)

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