Piezoelectric resonators. Reference data

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Piezoelectric resonators. Reference data

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The basis of the piezoelectric resonator is the piezoelectric element. The piezoelectric element is a mechanical oscillatory system with distributed parameters. When the frequency of the external electrical voltage coincides with the frequency of the mechanical natural oscillations of the piezoelectric element, a resonance occurs at the frequency of natural oscillations, which is weakly dependent on external conditions.

The symbol of a quartz resonator includes the following elements:

FIRST ELEMENT - letters "RK" (quartz resonator);
SECOND ELEMENT - a two (three) digit number indicating the registration number of the resonator type;
THIRD ELEMENT - a number indicating the class of tuning accuracy (1st class = ±0 5 x 10 °, 22nd class = ± 5000x10⁶);
FOURTH ELEMENT - a letter indicating the range of operating temperatures (L=0 +45°C, E=-60 +100°C);
FIFTH ELEMENT - a letter indicating the class of the maximum relative change in the operating frequency in the range of operating temperatures (A = ± 01x10⁶, E= ±1000х10⁶);

Piezoelectric resonators. Reference data

SIXTH ELEMENT - a number indicating the frequency, and a letter indicating the frequency unit ("K" - kHz, "M" - MHz);
THE SEVENTH ELEMENT - the letter "B", denoting the all-climatic version of the resonator.
A hyphen is placed between the 2nd and 3rd, 5th and 6th, 6th and 7th elements

There is no unity in the designation of quartz resonators by foreign companies, however, a similar classification can be traced. For example, the designations of quartz resonators from Narva are as follows:
FIRST ELEMENT - the letter "Q" - denoting quartz, C - ceramic filter;
SECOND ELEMENT - a letter indicating the type of vibration of the device (B - bending vibrations, L - longitudinal vibrations, F - plane vibrations, D - transverse vibrations); THIRD ELEMENT - a letter indicating the type of connection: "S" - pin (plug) connection, "L" - connection by soldering;
FOURTH ELEMENT - a number indicating the operating temperature or operating temperature range ("1" = -55 ... +90⁰ C, "2"= -20...+70°C, "3"= 0.. +60°C, "4"= +75+3°C, "5"= +70±3°C, "6"= +60*3°С, "7"= +50±3°С, "8"= +2...+25°С);
FIFTH ELEMENT - a letter indicating the tolerance for frequency deviation (A=±200x10⁶, V=±100x10⁶, C=±75x10⁶, D=±50x10⁶, E=±30x10⁶, F=±20x10⁶, G=±10x10⁶);

Piezoelectric resonators. Reference data

SIXTH ELEMENT - a number to indicate the load capacitance when tuned to parallel resonance (3= 30pF, 5= 50pF, 10= 100pF, 15= 150pF, 20= 200pF, 25= 250pF, 30= 300pF) and letters to designate quartz intended for settings for serial resonance (F - quartz, designed to be installed as a filter, S - stabilizing quartz);
SEVENTH ELEMENT - standard number (TGL 11767 - quartz, making plane vibrations, 200...400 kHz, in a metal case; TGL 11769 - quartz, making transverse vibrations, 1000...3000 kHz, in a metal case; TGL 11770 - quartz, making transverse vibrations, 8...20 MHz, in a metal case; TGL 11771 - quartz making transverse vibrations, 20...100 MHz, in a metal case);
EIGHTH ELEMENT - the numerical value of the resonance frequency.

Publication: cxem.net

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