445I35G13M00000

Series:	445
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	13MHz
Frequency Stability:	±50ppm
Frequency Tolerance:	±30ppm
Load Capacitance:	30pF
ESR (Equivalent Series Resistance):	50 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-40°C ~ 85°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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Crystals

Crystals are materials that are made up of a regularly repeating arrangement of atoms or molecules. In many cases, a crystal lattice can be broken down into an arrangement of tiny repeating cubes, and crystals typically crystallize in the form of a cubic lattice structure. The most common type of crystal is a quartz crystal, which is made up of silicon dioxide with two oxygen atoms per silicon atom. Other crystals, such as nitrides, can contain three or more atoms or molecules per unit cell.The 445I35G13M00000 crystal is a type of voltage-controlled crystal oscillator (VCXO) oscillator, which is widely used in the telecommunications industry. A VCXO is a type of quartz crystal oscillator that has its frequency adjusted by an applied voltage. VCXO oscillators produce a constant output frequency over a range of operating voltages, and have the benefit of providing greater frequency stability over temperature compared to other types of crystals.The 445I35G13M00000 crystal is designed for frequency control in applications such as radio transmitters, frequency synthesizers, RFID systems, and cellular base stations. The crystal has an operating frequency of 445.035 MHz and can be driven with an external control voltage of 1.25 to 5.0V (VDD). When driven with an external voltage, the crystal behaves in a linear fashion, meaning that its frequency can be adjusted in small increments.The frequency stability of the 445I35G13M00000 crystal is excellent, with an aging rate of less than 10 ppb/year, and a frequency pullability of typically +/-100 ppm (at 8V). The crystal also has an output waveform of typically 50/50 duty cycle, with an operating temperature range of -45 to +85 degrees Celsius.The working principle of the 445I35G13M00000 crystal is based on the piezoelectric effect. When a mechanical stress is applied to certain crystalline materials (such as quartz), electrical charges are generated, and this phenomenon is known as the piezoelectric effect. In the VCXO oscillator, this property is used to control the frequency of the oscillator.When the VCXO is driven by an external voltage, the charge that is generated will cause the crystal to vibrate at a specific frequency. The frequency of this oscillation is determined by the crystal’s dimension and the width of the air gap in the oscillator. When the applied voltage is adjusted, the air gap will expand or contract, resulting in a change in the frequency of the resonant circuit. The resulting frequency of the oscillator is determined by the external voltage applied to the crystal.The 445I35G13M00000 crystal is a highly reliable device, and is widely used in many applications. In addition to telecommunications applications, this type of crystal is also used in precision frequency measurement and high-frequency image processing. With its excellent frequency stability and excellent pullability, the crystal is a great choice for frequency control in a wide range of applications.

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