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FC-135R

Epson Crystal Unit
Fixed Frequency: 32.768KHz
Dimensions: 3.2 x 1.5 mm (3215)
PN: X1A000141000500 X1A000141000212
Applications: Small communication devices
 
Item Symbol Specifications Condition/Remarks
Nominal
frequency range
f_nom 32.768 KHz 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 0.5 µW (1.0 µW Max.) Please contact us if you require 1.0 µW Max.
Frequency tolerance
(standard)
f_tol ±20 × 10-6 +25°C ,D L= 0.1 µW Please ask for tighter tolerance
Turnover temperature Ti +25 °C ± 5 °C  
Parabolic coefficient B -0.04 × 10-6 / °C2 Max.  
Load capacitance CL 7 pF, 9 pF, 12.5 pF Please specify
Motional resistance
(ESR)
R1 50 kΩ Max.  
Motional capacitance C1 3.4 fF Typ.  
Shunt capacitance C0 1.1 pF Typ.  
Frequency aging f_age ±3 ×10-6 / year Max. +25 °C, First year

External dimensions



(Unit: mm)
 

Footprint (Recommended)



Do not design any circuit patterns in the shaded area.
(Unit: mm)