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领先同行HELE汽车级SMD晶体术语与选型

2023-09-28 11:35:52 

领先同行HELE汽车级SMD晶体术语与选型,Crystal oscillators and crystal resonators are essential components used in electronic devices to generate precise and stable frequencies. As an engineer working with these components, it's important to understand some key terms that will help you select the right crystal for your application. Here are six everyday terms you need to know:

1. Fundamental Mode

The fundamental mode refers to the primary frequency at which a crystal is designed to vibrate. Most crystals operate in the fundamental mode, meaning they vibrate at their intended frequency. However, crystals can also be designed to vibrate at higher frequencies, known as overtones. These overtones occur near multiples of the fundamental resonant frequency, such as the 3rd or 5th overtone. When selecting a crystal, it's crucial to determine whether it operates in the fundamental mode or an overtone mode.

2. Operating Temperature Range

The operating temperature range specifies the temperatures within which a crystal can function reliably. Different applications may require crystals that can withstand specific temperature ranges. For example, automotive-grade crystals may have an operating temperature range of -40°C to 125°C. It's important to pay attention to the operating temperature range of a crystal to ensure it meets the requirements of your application.

3. Frequency Stability

Frequency stability refers to the ability of a crystal oscillator or resonator to maintain a consistent frequency output over time. It is expressed in parts per million (ppm) and typically measured at room temperature (25°C). The lower the ppm value, the more stable the frequency output. Crystals with higher stability are often used in applications where precision is crucial, such as GPS devices.

4. Frequency Tolerance

Frequency tolerance represents the acceptable deviation from the stated frequency across the entire operating temperature range of the crystal. It is added to the frequency stability value measured at room temperature. For example, a crystal with a frequency stability of 50 ppm and a frequency tolerance of 50 ppm means that the actual frequency may vary by up to 100 ppm across the entire temperature range.

5. Load Capacitance

Load capacitance refers to the capacitance value within the crystal oscillator or resonator. It is expressed in picofarads (pF) and determines the external capacitance required for the crystal to function optimally. The load capacitance can be a standard value specified on the datasheet or customized based on the specific requirements of the circuit design. Optimizing the load capacitance helps ensure the crystal's stable operation across temperature extremes.

6. Case Size

The case size indicates the physical dimensions of the crystal package. It is typically expressed as length x width x height (e.g., 5.0mm x 3.2mm x 0.8mm). Additionally, the case size may specify the number of pads (2 or 4) and the package type, such as ceramic, plastic, glass weld, or epoxy weld. Engineers often refer to case sizes using industry-standard codes like 2016 or 3225.

By familiarizing yourself with these everyday terms, you'll gain a better understanding of crystal oscillators and crystal resonators. Remember to consider fundamental mode, operating temperature range, frequency stability, frequency tolerance, load capacitance, and case size when selecting the right crystal for your electronic designs.

Note: The information provided is based on industry knowledge and best practices. For detailed specifications and further guidance, consult the manufacturer's datasheets and application notes.

For additional information, contact Harmony Electronics to discuss our crystal devices and how we can assist with your quartz frequency component needs. We encourage you to explore our website to learn more about our company, applications, and product offerings.

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晶体振荡器和石英晶体谐振器是电子设备中用来产生精确和稳定频率的基本元件。作为一名使用这些元件的工程师,了解一些关键术语非常重要,这将有助于您根据应用选择合适的晶体。以下是你需要知道的六个日常用语:

1.基本形式

基模是指晶体设计振动的主要频率。大多数晶体以基本模式运行,这意味着它们以预定的频率振动。然而,晶体也可以被设计成以更高的频率振动,即泛音。这些泛音出现在基本谐振频率的倍数附近,例如第三或第五泛音。选择晶振时,确定它是工作在基音模式还是泛音模式至关重要。

2.工作温度范围

工作温度范围规定了晶体能够可靠工作的温度。不同的应用可能需要能够承受特定温度范围的晶体。例如,汽车级SMD晶体的工作温度范围可能为-40°C至125°C,务必注意晶体的工作温度范围,以确保其满足应用要求。领先同行HELE汽车级SMD晶体术语与选型.

3.频率稳定度

频率稳定性是指晶体振荡器或谐振器在一段时间内保持一致频率输出的能力。它以百万分率(ppm)表示,通常在室温(25°C)下测量。ppm值越低,频率输出越稳定。稳定性更高的晶体通常用于精度至关重要的应用中,如GPS设备。

4.频率公差

频率容差表示在晶体的整个工作温度范围内,与规定频率的可接受偏差。它与室温下测得的频率稳定度值相加。例如,频率稳定性为50ppm、频率容差为50ppm的石英晶体意味着实际频率在整个温度范围内的变化幅度最高可达100ppm。

编码 Series 台产晶振 描述 频率 频率稳定性
X3Z025000D81H-X HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 25.000MHZ -
X3S027000BA1H-X HSX321S HELE加高晶振 SMD Crystal Resonators SMD-3225_4P RoHS 27.000MHZ -
X3S024000BA1H-V HSX321S HELE加高晶振 SMD Crystal Resonators 24MHz ±10ppm SMD-3225_4P RoHS 24.000MHZ ±10ppm
X3S016000BC1H-V HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 16.000MHZ -
X3S024000BC1HA-V HSX321S HELE加高晶振 SMD Crystal Resonators 24MHz ±10ppm SMD-3225_4P RoHS 24.000MHZ ±10ppm
X3S020000BF1HA-V HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 20.000MHZ -
X5H008000DC1H-W HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 8.000MHZ -
X3S016000DC1H-U HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 16.000MHZ -
X2C026000B91H-V HSX211S HELE加高晶振 SMD Crystal Resonators 26MHz ±10ppm SMD-2016_4P RoHS 26.000MHZ ±10ppm
X3S026000BG1S-HU HSX321S HELE加高晶振 SMD Crystal Resonators 26MHz ±10ppm SMD-3225_4P RoHS 26.000MHZ ±10ppm
X3S024000BK1H-Z HSX321S HELE加高晶振 SMD Crystal Resonators SMD-3225-4P RoHS 24.000MHZ -
X3S024000DC1H-X HSX321S HELE加高晶振 SMD Crystal Resonators SMD-3225_4P RoHS 24.000MHZ -
X3S025000DC1H-U HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 25.000MHZ -
X5H025000DK1H HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 25.000MHZ -
X3S025000BA1H-U HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 25.000MHZ -
XSA012000DK1H-OX HC-49S HELE加高晶振 SMD Crystal Resonators 12MHz ±20ppm HC-49SMD RoHS 12.000MHZ ±20ppm
X3S012000BA1H-V HSX321S HELE加高晶振 SMD Crystal Resonators 12MHz ±10ppm SMD-3225_4P RoHS 12.000MHZ ±10ppm
X3S026000B71HZ-HPR HSX321S HELE加高晶振 SMD Crystal Resonators 26MHz ±10ppm SMD-3225-4P RoHS 26.000MHZ ±10ppm
X3S02863ADK1HA-X HSX321S HELE加高晶振 SMD Crystal Resonators 28.63636MHz ±20ppm SMD-3225_4P RoHS 28.63636MHZ ±20ppm
X2B026000B71HZ HSX221SA HELE加高晶振 SMD Crystal Resonators 26MHz ±7ppm SMD-2520_4P RoHS 26.000MHZ ±7ppm
X3S032000B91H-HU HSX321S HELE加高晶振 SMD Crystal Resonators SMD_3225-4P RoHS 32.000MHZ -
X2B040000BF1H-HZ HSX221SA HELE加高晶振 SMD Crystal Resonators 40MHz ±10ppm SMD-2520_4P RoHS 40.000MHZ ±10ppm
X3S026000BC1H-NR HSX321S HELE加高晶振 SMD Crystal Resonators 26MHz ±10ppm SMD-3225_4P RoHS 26.000MHZ ±10ppm
X3S013000BA1HA-U HSX321S HELE加高晶振 SMD Crystal Resonators 13MHz ±10ppm SMD-3225_4P RoHS 13.000MHZ ±10ppm
X5H022118DK1H-W HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 22.1184MHZ -
X5H008000FC1H-X HSX530G HELE加高晶振 SMD Crystal Resonators 8MHz ±30ppm SMD-5032_2P RoHS 8.000MHZ ±30ppm
X5H027000DA1H-W HSX530G HELE加高晶振 SMD Crystal Resonators 27MHz ±20ppm SMD-5032_2P RoHS 27.000MHZ ±20ppm
XSA008000DC1H-OX HC-49S HELE加高晶振 SMD Crystal Resonators 8MHz ±20ppm HC-49SMD RoHS 8.000MHZ ±20ppm
X3S016000B91H-X HSX321S HELE加高晶振 SMD Crystal Resonators 16MHz ±10ppm SMD-3225_4P RoHS 16.000MHZ ±10ppm
X1H016000FI1H-X HELE加高晶振 SMD Crystal Resonators 16MHz ±30ppm SMD_5032-4P RoHS 16.000MHZ ±30ppm
X1H025000FK1H HELE加高晶振 SMD Crystal Resonators 25MHz ±30ppm SMD_5032-4P RoHS 25.000MHZ ±30ppm
X5H015360FK1H-X HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 15.360MHZ -
X1H027000DK1H-HV HSX321S HELE加高晶振 SMD Crystal Resonators SMD_5032-4P RoHS 27.000MHZ ±20ppm
X5H008000FK1H-X HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 8.000MHZ -
X1H022118DK1H HELE加高晶振 SMD Crystal Resonators SMD_5032-4P RoHS 22.1184MHZ ±20ppm
X1H012000FK1H HELE加高晶振 SMD Crystal Resonators 12MHz ±30ppm SMD_5032-4P RoHS 12.000MHZ ±30ppm
X1H025000FK1HA-X HELE加高晶振 SMD Crystal Resonators SMD_5032-4P RoHS 25.000MHZ ±30ppm
X5H01431AFK1H-X HSX530G HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 14.31818MHZ -
X5H013560FC1H-X HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 13.560MHZ -
X1H016000FK1H-X HELE加高晶振 SMD Crystal Resonators 16MHz ±30ppm SMD_5032-4P RoHS 16.000MHZ ±30ppm
X5H024000DC1H-X HELE加高晶振 SMD Crystal Resonators 16MHz ±30ppm SMD_5032-4P RoHS 24.000MHZ -
X1H008000DK1H-X HELE加高晶振 SMD Crystal Resonators 8MHz ±20ppm SMD_5032-4P RoHS 8.000MHZ ±20ppm
X1H022118FK1H-V HELE加高晶振 SMD Crystal Resonators 22.1184MHz ±30ppm SMD-5032_4P RoHS 22.1184MHZ ±30ppm
X1H020000FK1H-X HELE加高晶振 SMD Crystal Resonators SMD_5032-4P RoHS 20.000MHZ ±30ppm
X5H025000FK1H-X HSX530G HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 25.000MHZ -
X5H008000FF1H HSX530G HELE加高晶振 SMD Crystal Resonators SMD-5032-2P RoHS 8.000MHZ -
X2B024000BCIH-HV HSX221SA HELE加高晶振 SMD Crystal Resonators 24MHz ±10ppm SMD-2520_4P RoHS 24.000MHZ ±10ppm
X5H012000FC1H-X HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 12.000MHZ -
X5H012288FI1H HSX530G HELE加高晶振 SMD Crystal Resonators 12.288MHz ±30ppm SMD-5032_2P RoHS 12.288MHZ ±30ppm
X5H008000IK1H-H HSX530G HELE加高晶振 SMD Crystal Resonators SMD_5032-2P RoHS 8.000MHZ -
X1H008000DI1H-HW HELE加高晶振 SMD Crystal Resonators 8MHz ±20ppm SMD_5032-4P RoHS 8.000MHZ ±20ppm
X3S026000B71HZ-NHPZ HSX321S HELE加高晶振 SMD Crystal Resonators 26MHz ±10ppm SMD-3225_4P RoHS 26.000MHZ ±10ppm
X1C026000B81H-V HSX111AU HELE加高晶振 SMD Crystal Resonators SMD,1.65x1.25mm RoHS 26.000MHZ -
X2C024000BA1H HSX211S-AU HELE加高晶振 SMD Crystal Resonators SMD-2016 RoHS 24.000MHZ ±10ppm
X2C024000B71H-V HSX211S-AU HELE加高晶振 SMD Crystal Resonators SMD,2.0x1.6mm RoHS 24.000MHZ ±10ppm
X2R026000BZ1HZ-DEHPZ HSX221SR HELE加高晶振 SMD Crystal Resonators SMD-2520 RoHS 26.000MHZ -
X3S012000DK1HA-X HSX321S HELE加高晶振 SMD Crystal Resonators SMD-3225 RoHS 12.000MHZ ±20ppm
X2B050000BC1H-V HSX221SA HELE加高晶振 SMD Crystal Resonators SMD,2.5x2.0mm RoHS 50.000MHZ 10PPM
X2C024000FA1H-X HSX211S-AU HELE加高晶振 SMD Crystal Resonators SMD,2.0x1.6mm RoHS 24.000MHZ 30PPM
X3S026000BZ1HZ-HU HSX321S HELE加高晶振 SMD Crystal Resonators SMD-3225 RoHS 26.000MHZ -
X3S027000BK1H-V HSX321S HELE加高晶振 SMD Crystal Resonators SMD,3.2x2.5mm RoHS 27.000MHZ 10PPM
X1C048000FK1H-HX HSX111AU HELE加高晶振 SMD Crystal Resonators SMD,1.65x1.25mm RoHS 48.000MHZ 30PPM
X3S030000BK1H HSX321S HELE加高晶振 SMD Crystal Resonators SMD,3.2x2.5mm RoHS 30.000MHZ 10PPM
X3S026000B81H-NCHZ HSX321S HELE加高晶振 SMD Crystal Resonators SMD,3.2x2.5mm RoHS 26.000MHZ 10PPM
X2C016000B81H-HPU HSX211S-AU HELE加高晶振 SMD Crystal Resonators SMD-2016 RoHS 16.000MHZ 10PPM
X3S013560DA1H-HU HSX321S HELE加高晶振 SMD Crystal Resonators SMD,3.2x2.5mm RoHS 13.560MHZ ±20ppm

5.负载电容

负载电容是指晶体振荡器或谐振器内的电容值。它用皮法(pF)表示,决定晶体最佳工作所需的外部电容。负载电容可以是数据手册中规定的标准值,也可以根据电路设计的具体要求定制。优化负载电容有助于确保晶体在极端温度下稳定工作。

6.案例大小

外壳尺寸表示水晶包装的物理尺寸。它通常表示为长×宽×高(例如,5.0毫米×3.2毫米×0.8毫米)。此外,外壳尺寸可指定焊盘数量(2或4)和封装类型,如陶瓷、塑料、玻璃焊接或环氧焊接。工程师通常使用行业标准代码(如2016或3225)来表示机箱尺寸。

通过熟悉这些日常术语,你会对晶体振荡器和晶体谐振器有更好的理解。为电子设计选择合适的贴片石英晶体时,请记住考虑基模、工作温度范围、频率稳定性、频率容差、负载电容和外壳尺寸。

注:所提供的信息基于行业知识和最佳实践。欲了解详细规格和进一步指导,请参考制造商的数据手册和应用笔记。

如需更多信息,请联系Harmony Electronics,讨论我们的晶体器件以及我们如何满足您的石英频率元件需求。我们鼓励您浏览我们的网站,了解更多关于我们公司、应用和产品的信息。


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