7M40000049

Series:	7M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	40MHz
Frequency Stability:	±10ppm
Frequency Tolerance:	±10ppm
Load Capacitance:	10pF
Operating Mode:	--
Operating Temperature:	-30°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max):	0.032" (0.80mm)

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Introduction to Crystals

Crystals are essential components for electrical, mechanical and optical applications. When a crystal is subjected to an electric field, the crystal can vibrate at its own natural frequency. This vibrational resonant frequency can be precisely and accurately tuned by manipulating the electrical characteristics such as voltage, current, inductance, and capacitance of the crystal.

Crystals have become popular across a wide range of industries due to their reliable performance. Crystals are extensively used in, but not limited to, military and aerospace applications as timing references, frequency references as well as frequency control. They are also used in automobiles, television broadcasting, audio equipment, surveillance and communication equipment, etc.

7M40000049 application field and working principle

7M40000049 is a miniature high-frequency quartz crystal from Rakon. It is a surface mount device with a built-in load capacitance of 12.5 pF. It is constructed with two conductive electrodes near the crystal resonator. The crystal(s) operates between the frequencies of 16-26 MHz.The 7M40000049 is mainly used in embedded applications that require a robust, miniature solution. This crystal is suitable for a variety of applications such as cellular phones, mini equipment, and portable applications.

Working Principle

The 7M40000049 crystal is a quartz crystal that works on the principle of piezoelectricity. When a voltage is applied to a quartz crystal, its crystal lattice vibrates and creates an electric vibration at its resonant frequency. When the voltage oscillation is removed, the piezoelectrically generated electric current creates a physical vibration of the crystal lattice at its resonant frequency.The 7M40000049 oscillator is designed to be used in applications that require very high accuracy and stability. The quartz crystal is placed in a parallel-plate capacitive configuration that further increases its stability and reduces the variance of the output frequency due to temperature and voltage variations. The device operates up to 26 MHz with a low tolerance of ±20 ppm and low aging of ±3 ppm.

Applications

The 7M40000049 quartz crystal is widely used in various electronics applications where high precision and stability is required. These applications include general-purpose crystal oscillators, wireless infrastructure devices, cellular phones, digital ICs, and embedded microcontrollers.The 7M40000049 is used in applications that require high accuracy, precision and stability. The 7M40000049 can be used as frequency sources for ultra-wideband radio, high-resolution spectroscopy, phase-locked loops and phase modulation systems. It is also used in automotive control and monitoring systems, military systems, transmission systems, etc.

Conclusion

The 7M40000049 quartz crystal is a miniature, high-frequency quartz crystal from Rakon. It is a surface mount device with a built-in load capacitance of 12.5 pF and operates between 16-26 MHz. It is designed to be used in applications that require very high accuracy and stability. The quartz crystal works on the principle of piezoelectricity and is widely used in various electronics applications where high precision and stability is required.

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