445C25S27M00000

Series:	445
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	27MHz
Frequency Stability:	±50ppm
Frequency Tolerance:	±20ppm
Load Capacitance:	Series
ESR (Equivalent Series Resistance):	40 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-20°C ~ 70°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	2-SMD, No Lead
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Height - Seated (Max):	0.053" (1.35mm)

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Introduction to Crystals

Crystals are important components in many electronic applications. They are small quartz crystals with metal electrodes that are used in oscillators or resonators to control the output frequency or timing of electronic circuits. Crystal oscillators, also called crystal oscillator circuits, are used to generate timing signals in the form of a periodic output waveform, usually at a fixed frequency. They are widely used in a range of different applications from radio frequency (RF) transmission to microprocessor clocking.

Crystals

Crystal oscillators, such as the 445C25S27M00000, are fabricated from quartz by cutting and polishing a round block of quartz crystal into a thin plate. A metal electrode is then sputtered onto each side of the plate and two fine electrodes are placed on the surface of the plate. The electrodes act as a capacitor, allowing the crystal to "ring" or oscillate at its resonant frequency.

445C25S27M00000 Application Fields and Working Principles

The 445C25S27M00000 is a low-cost surface mount crystal oscillator and it is suitable for a variety of electronic applications. It has a small footprint, excellent frequency stability and low thermal drift. It is widely used in mobile phone, tablets, and PCs, electronic small machine products, industrial and medical devices and other products of high frequency applications.The working principle of the 445C25S27M00000 is based on the phenomenon of resonance. When an alternating current is applied to the two electrodes of the crystal, the quartz crystal vibrates at its resonant frequency and generates an oscillating signal. This signal is used as a reference clock to drive other electronic circuits in a synchronized manner.

Advantages and Disadvantages

The 445C25S27M00000 crystal oscillator provides several advantages. It is designed to provide an accurate oscillation frequency with low jitter and low noise output. The device is also compact and has excellent shock and vibration resistance, making it suitable for applications in harsh environments. It also has a low current consumption which makes it ideal for battery-powered devices.The main disadvantages of the 445C25S27M00000 is that it is very sensitive to environmental factors such as temperature and humidity, which can affect its performance. It also requires tight mechanical control to ensure that its resonance frequency is accurate.

Conclusion

In conclusion, the 445C25S27M00000 is a low-cost and space-saving surface mount crystal oscillator. It has excellent frequency stability, low jitter, low power consumption and shock and vibration resistance. It is widely used in mobile phones, tablets, PCs, medical devices, and industrial applications. However, it is important to keep in mind its sensitivity to environmental factors such as temperature and humidity, as well as its requirement for tight mechanical control.

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