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Watch Crystal Ranges

Epson’s comprehensive 32.768kHz watch crystal ranges including automotive qualified components.

Supplier: Epson

Epson logo

Technology type: Quartz Crystals (Frequency Control)

Epson offers a vast range of 32.768kHz watch crystal products. Their focus and recommended models for new designs are sub miniature series that offer a wide range of options. Larger packages are available, please enquire.

FC1610AN (1.6x1.0mm) . Smallest in the range, ideal for compact communication devices. Available at +/-20ppm with either 9pF or 12.5pF load capacitance.

 FC-12M (2.05x1.2) . Predominately a 32.768kHz device but available in other kHz frequencies too. +/-20ppm or +/-30ppm options with 12.5pF load capacitance. A low ESR version (FC2012AN) in this size is also available.

FC-135 (3.2x1.5) . Now an industry standard. +/-10ppm and +/-20ppm (std) available in a variety of load capacitances either 7pF, 9pF or 12.5pF. An automotive qualified AEC-Q200 version (FC-13A) and low ESR option (FC-135R) are options in this 3.2x1.5mm series too giving great flexibility.


Range features

A high level overview of what this range offers

  • Ideal for small applications
  • Various package sizes available 1.6x1.0mm through to 8x3.4mm
  • +/-10ppm tolerance available on request
  • Automotive AEC-Q200 extended temperature range options
  • Most series offer a range of load capacitance
  • Low ESR selected crystals available
  • Other kHz frequencies possible on request
  • ROHS Compliant devices

What's in this range?

All the variants in the range and a comparison of what they offer

Epson series





Frequency tolerance (ppm)

Operating temperature range (°C)


1.6 x 1.0 x 0.5



-40 to +85


2.05 x 1.2 x 0.6


32.00 - 77.5

±20, ±30

-40 to +85


2.05 x 1.2 x 0.6



-40 to +105


3.2 x 1.5 x 0.8


32.00 - 77.5

±10, ±20

-40 to +85

*contact for up to +105

FC-13A (AEC-Q200)

3.2 x 1.5 x 0.8


±20, ±30, ±50

-40 to +125

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