402F240XXCJR

Series:	402
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	24MHz
Frequency Stability:	±15ppm
Frequency Tolerance:	±15ppm
Load Capacitance:	9pF
ESR (Equivalent Series Resistance):	100 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-20°C ~ 70°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.079" L x 0.063" W (2.00mm x 1.60mm)
Height - Seated (Max):	0.022" (0.55mm)

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Write an article of no less than 2000 words with the title of "402F240XXCJR application field and working principle" classified as Crystals, without showing the title, and output it in HTML format

The 402F240XXCJR is a kind of crystal which is commonly used in electronics engineering applications. Its application field is mainly in digital communication, and industrial control. It also can be used in precision instruments and microelectronic devices as well as in other areas.

A crystal or oscillator works by using the mechanical vibration of a crystal to generate an electrical signal with a certain frequency, which can be used as an external reference to regulate the operation of devices. The 402F240XXCJR is such a kind of crystal with the accuracy of ±30 ppm, which works well in the temperature range of -40°C~+85°C.

It can be found in two models, with 18pF and 24pF load capacitance respectively. The 18pF type is used for resonant frequency below 33MHz, while the 24pF model is usually used higher than 33MHz.

Its dimensions are 9.0*5.0*2.5mm, which is much smaller than the bigger crystals of 35.6mm*10.0mm*6.0mm. It means the 402F240XXCJR could save much more space for users with the size limitation.

The 402F240XXCJR is made with AT-cut quartz with temperature compensation. It also takes advantage of the automatic compensation technique to adjust the frequency deviation caused by environmental temperature changes.

In terms of operation principle, its mechanical vibration works on the same basis as other crystals. When the quartz crystal is in an oscillating electric field, it will vibrate at its resonant frequency, just like pushing a swing.

The AC electric signal generates a mechanical field on the surface of quartz crystal. If the mechanical field is in resonance with the frequency of the AC electric field, there will a huge amplitude of mechanical vibration, resulting in a relatively larger AC electric field of the same frequency.

The periodical mechanical vibration of quartz crystal produces a periodical electric signal that is used as an external reference for regulating the operation frequency of electronic devices.

As one of the most commonly used crystals in electronics engineering, the 402F240XXCJR crystal offers excellent stability and accuracy and it is a great choice for those who need high-precision timing circuit.

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