ECS-40-18-4XEN

Series:	HC-49USX
Packaging:	Bulk
Part Status:	Active
Type:	MHz Crystal
Frequency:	4MHz
Frequency Stability:	±50ppm
Frequency Tolerance:	±30ppm
Load Capacitance:	18pF
ESR (Equivalent Series Resistance):	150 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Through Hole
Package / Case:	HC-49/US
Size / Dimension:	0.447" L x 0.183" W (11.35mm x 4.65mm)
Height - Seated (Max):	0.138" (3.50mm)

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Crystals: ECS-40-18-4XEN Application Field and Working Principle

Crystals are essential components for all kinds of electronic circuits because of their high-precision frequency stability, wide temperature compensation range, and long lifetime. ECS-40-18-4XEN is a widely used crystal oscillator from the Crystal Manufacturers Series, widely used in areas from mobile communication to instrumentation. This crystal oscillator is widely applied in areas such as communication devices, GPS receivers, robotic control systems, automotive systems, and medical-care applications. ECS-40-18-4XEN consists of an integrated circuit, a crystal element and some discrete components, forming an oscillation circuit with an output frequency capability of 40MHz. It is recommended for operating temperature range of -20℃ to 80℃ with a stability of +/-10ppm.The working principle of ECS-40-18-4XEN is based on the oscillation properties of its crystal element. Generally, crystal oscillators consist of a quartz crystal element, a pair of metal electrodes, a circuit for impedance adjustment and a resistor for temperature compensation. Quartz crystals are dielectric materials with piezoelectric properties that can change their electrical characteristics in response to mechanical strain. When a voltage is applied across the metal electrodes at opposite sides of the crystal element, an electric field is produced which causes the crystals to deform and generate mechanical stress which in turn produces an electrical oscillation. This phenomenon is called "piezoelectric effect". The quartz crystal element used in ECS-40-18-4XEN is highly stable and reacts very precisely to a given frequency, even if the operating temperature or voltage varies.In addition to the piezoelectric effect, the ECS-40-18-4XEN is stabilized to maintain its precision. This is achieved by adding external components like capacitors and resistors to the oscillation circuit to compensate for changes in temperature, voltage and other environmental influences on the crystal element\'s oscillation performance. This sophisticated combination of components keeps the ECS-40-18-4XEN\'s output frequency at the exact frequency of 40 MHz, even if the external and environmental circumstance changes. Therefore, the crystal oscillator maintains its high-precision stability and contributes significantly to the accuracy of the electronic circuits where it\'s used.In conclusion, ECS-40-18-4XEN is a very precise and reliable crystal oscillator, widely used in embedded systems, medical and defense applications, among others. Its stability and precision is due to the combination of quartz crystal element and a carefully designed oscillation circuit with additional external components. It is capable of maintaining its frequency output even in variable environmental conditions, making it the ideal choice for high-precision, stable electronic circuits.

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