FOXSDLF/250F-20

Series:	HC49SDLF
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	25MHz
Frequency Stability:	±50ppm
Frequency Tolerance:	±30ppm
Load Capacitance:	20pF
ESR (Equivalent Series Resistance):	30 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-20°C ~ 70°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	HC-49/US
Size / Dimension:	0.461" L x 0.197" W (11.70mm x 5.00mm)
Height - Seated (Max):	0.177" (4.50mm)

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Crystals: FOXSDLF/250F-20 Application Field and Working Principle

Crystals are composed of cut pieces of natural or synthetically produced quartz. Clear crystals have the unique ability to convert mechanical energy into electrical energy, as well as vibrating in response to electrical energy. These properties make crystals powerful assets in the world of engineering and technology.The FOXSDLF/250F-20 crystal is an ultrasonic quartz crystal with a frequency of 250kHz. Its incredible accuracy and temperature stability makes it the perfect choice for battery-powered radio equipment and cellular base station alarm systems. This quartz crystal can also be used in precision frequency division circuits and filters, oscillators and clocks, as well as harmonic control.The FOXSDLF/250F-20 crystal is a surface-mount device that is large enough to allow for a tight electrical connection between the circuit and crystal. The hermetically sealed package also prevents moisture from damaging the sensitive quartz crystal. It is typically used in TO-39,TO-18 and DIP-14 package configurations for applications such as digital oscilloscopes and transceivers.The working principle of the FOXSDLF/250F-20 crystal is that when a voltage is applied, the external circuit acts on the quartz crystal, causing the crystal to begin rapidly oscillating. This oscillation creates an alternating current in the circuit, and the frequency of this current is determined by the physical properties of the quartz. The frequency of the crystal is determined by the thickness, length, and width of the quartz. The thicker the quartz, the higher the frequency.The FOXSDLF/250F-20 crystal also utilizes a technique called temperature-compensated crystal oscillator, or TCXO, that allows it to maintain a stable frequency over a wide range of temperatures. This technique involves the use of a thermistor to detect temperature changes, and it is used to adjust the bias currents in order to ensure the correct frequency out of the crystal.The FOXSDLF/250F-20 crystal is a cost-effective, reliable component that can be used in applications that demand precision, accuracy and temperature stability. Its excellent combination of features make it an ideal choice for a variety of applications such as digital oscilloscopes, precision frequencies divisions, filters, oscillators and clocks, as well as harmonic control. The combination of its robust hermetically sealed package and its temperature-compensated crystal oscillator make it an exceptionally reliable, cost-efficient and precise component.

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