Crystal (quartz) symbol
Also called Quartz crystal, Crystal oscillator, XTAL
A quartz crystal resonator that sets a precise frequency: a thin rectangle between two plates.
ANSI / IEEE
IEC 60617What the crystal (quartz) symbol means
A quartz crystal resonator that sets a precise frequency: a thin rectangle between two plates.
ANSI and IEC symbols
Where you see it
Clocks for microcontrollers, PLC processors, radios and real-time clocks.
What is written next to it
On a schematic, the crystal (quartz) usually carries its designator and frequency, such as Y1 16 MHz.
Related symbols
Frequently asked questions
What does the crystal (quartz) symbol look like?
On ANSI drawings: A narrow rectangle between two parallel plates. In IEC 60617: The same rectangle between plates.
Is the crystal (quartz) symbol the same in IEC and ANSI?
Yes, it is drawn the same way in most legends.
Where is a crystal (quartz) used?
Clocks for microcontrollers, PLC processors, radios and real-time clocks.
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