8Q-27.120MAHE-T

Crystals are a class of inert, hard materials that are used to control the frequency of oscillations in all manner of electronic devices, ranging from the simplest clocks to the most sophisticated cellphones, computers and audio-visual equipment, militarily specified guidance systems and high-precision instrumentation. 8Q-27.120MAHE-T is a commonly used crystal unit, and its features and working principles are described below.

8Q-27.120MAHE-T is a quartz crystal unit with a fundamental frequency of 27.120MHz. It is an AT-cut crystal, with through-hole mounting, and it is designed to allow low power and very low ESR (<30 Ohms). This type of crystal is optimal for suppressing the effects of temperature, capacitive loading and drive level, and maintaining the frequency stability of the oscillations.

In general, a crystal oscillator circuit comprises three components: the resonator, the amplifier and the feedback circuitry. The resonator is the core of the circuit and is constituted by the quartz crystal. The crystal, once set in motion by the amplifier, vibrates mechanically and generates a mechanical resonance. The vibrations are then taken up by the amplifier, which amplifies them and sends them back to the crystal. This transient process is repeated and maintained over time, thus producing an AC signal.

More specifically, 8Q-27.120MAHE-T features a total circuit capacitance of 24pF with a series equivalent capacitance of 12pF, a shunt capacitance of 12pF, a series equivalent inductance of 700nH, a fundamental frequency of 27.120MHz and an operating temperature range of -20~+70°C. It also has a frequency stability of ±30PPM and a load capacitance of 20pF.

In terms of application field, 8Q-27.120MAHE-T is used primarily in Oscillation circuits and timing circuits, which make up a considerable part of equipments in the electronics market. Oscillation circuits are employed in digital cameras, DVD recorders, printers and notebook computers, and often need to be highly accurate, making crystals like 8Q-27.120MAHE-T the most appropriate choice for these applications. Similarly, timers find use in a variety of electronic products, and require a crystal resonator in order to keep time accurately.

It should be noted that the features of 8Q-27.120MAHE-T make it suitable for a host of other applications, such as wireless bases, telephone networks, control systems, global positioning systems and automotive navigation radar. Additionally, thanks to its exceptional frequency stability, it can be used in high-precision instruments and complex military equipment.

In conclusion, 8Q-27.120MAHE-T is a quartz crystal unit with an AT-cut, through-hole mounting and an operating frequency of 27.120MHz. It has excellent characteristics for suppressing the effects of temperature and capacitive loading and maintaining frequency stability, and is commonly used in oscillatory, timing and other precision applications in the electronics market, ranging from consumer to military products.