Tuning-fork crystal units

Sub-miniature tuning-fork crystal units & sub-miniature real-time clock modules

3-D photolithographic processing of crystal chips

Miniaturizing crystal chips with a conventional structure (left image) reduces the area of the electrodes (indicated in red).
Fabricating the chips with an H-groove structure provides a larger electrode area and raises electrolytic efficiency. This design enables miniaturized crystal with CI values as low as those on ordinary-sized crystals (right image).

The CI value of a crystal fabricated using QMEMS technology, however, remains constant, at a level equivalent to that of conventional crystals, even as crystal size decreases.

Small and thin Tuning-fork crystal units contribute to the realization of small, thin, stylish mobile devices. Thin Tuning-fork crystal units contribute to the realization of slim, card-mountable crystal devices for secure smart cards.

Some of our most popular sub-miniature tuning-fork crystal units & sub-miniature real-time clock modules

kHz range crystal units


FC-12M
2.05×1.2×0.6t (mm)


FC-135 / FC-135R
3.2×1.5×0.8t (mm)


FC-255M
4.9×1.8×0.8t (mm)


Crystal oscillators

SPXO


SG-3030CM
3.2×1.5×0.9t (mm)


SG-3030LC
3.6×2.8×1.2t (mm)


SG-3040LC
3.6×2.8×1.2t (mm)


Real time clock modules


RX8900CE
3.2×2.5×1.0t (mm) Max.


RX8130CE
3.2×2.5×1.0t (mm) Max.


RX-4574LC
3.6×2.8×1.2t (mm) Max.


RX-4571LC
3.6×2.8×1.2t (mm) Max.


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