CMR250T76.8KAZF-UT

Series:	CMR250T
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	kHz Crystal (Tuning Fork)
Frequency:	76.8kHz
Frequency Stability:	--
Frequency Tolerance:	±30ppm
Load Capacitance:	12.5pF
Operating Mode:	Fundamental
Operating Temperature:	-10°C ~ 60°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	Cylindrical Can, Radial
Size / Dimension:	0.079" Dia x 0.236" L (2.00mm x 6.00mm)
Height - Seated (Max):	0.079" (2.00mm)

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Introduction to Crystals

Crystals are used in many applications to create precise frequency stability and to provide a reliable source of oscillation for circuits. Quartz crystals are used in a variety of electronic applications, from timing devices to cell phones. A crystal oscillator is typically connected to an electronic circuit and used to provide a stable reference frequency.

CMR250T76.8KAZF-UT Application Field and Working Principle

CMR250T76.8KAZF-UT is a quartz crystal resonator specifically designed for high stability in applications with a wide range of temperature and frequency requirements. It is thermally compensated, and its stability is specified at a range of -40°C to +85°C temperature. The oscillation range is typically between 8.0 MHz to 76.8 MHz and its impedance is matched to an external circuit of 50Ω.The working principle behind the CMR250T76.8KAZF-UT is based on the oscillation of mechanical vibrations. When an alternating current is applied to the crystal through a circuit, the crystal vibrates at a particular frequency determined by its size and shape. The mechanical vibrations in the crystal cause an electrical current to flow through the connected circuit, making it possible to measure the frequency produced by the crystal. The frequency of the crystal can be adjusted by changing the applied voltage and temperature. The CMR250T76.8KAZF-UT is mainly used in high frequency, high stability oscillator circuits, including resonant transformers, transceivers, VCOs, frequency synthesizers and RF oscillators. It is also used to power microprocessor clocks, mobile phone baseband circuits and modems.

Conclusion

Crystals are an essential component in many electronic applications. The CMR250T76.8KAZF-UT crystal is a quartz crystal resonator that is designed for high stability in wide temperature and frequency range applications. It is mainly used in applications requiring high frequency and high stability oscillators, such as resonant transformers, transceivers, VCOs, and frequency synthesizers.

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