选择石英晶体要了解的必要参数,ECS-265.971-CD-0382晶振，由于石英晶振的多功能性，长期以来一直被认为是创造准确耐用计时解决方案的最佳材料。石英晶振以满足许多不同系统的需求。这种多功能性对工程师来说是一个好处，但有时也会增加混乱。
为了获得更顺畅的过程，请关注以下频率控制参数，以缩小选项范围并确定与您的需求最相关的组件。
频率
石英自然携带频率，但它必须从其自然状态转换为用于定时解决方案的碎片或晶体。大多数石英晶体频率介于 32.768 kHz 和 200 MHz 之间。石英晶体振荡器必须与系统所需的频率相匹配。设计电路时，请记住频率与其他参数无关。
环境温度下的频率容差
工程师希望避免石英晶体振荡器的易失性和意外行为，因此他们必须了解支持其系统的晶体的频率容差。频率容差表示在环境温度下正常工作期间与额定晶体频率的最大预期偏差。这是制造商提供的保证数字，只要正确使用定时解决方案，就可以确保石英晶体的振荡频率保持在一定范围内。选择具有最大晶体频率容差的定时解决方案，该解决方案可以安全地落在系统的可接受范围内。
频率稳定性

选择石英晶体要了解的必要参数,ECS-265.971-CD-0382晶振，信誉良好的ECS晶振制造商通过两种方式识别石英晶体的频率稳定性：在可接受的工作温度范围内的频率偏差和每次温度变化的频率偏差。这些数字为工程师提供了足够的信息，以确定适合其系统的时序解决方案。这使他们能够预测温度波动对每个潜在定时解决方案的影响，并做出最明智的选择。
工作温度
石英晶体必须始终考虑的一个特征是温度依赖性。所有石英晶振封装在其数据表上都有温度容差。在保证公差之外运行并不总是会导致直接问题，但随着时间的推移会导致功能不正常。确保采购的定时解决方案包括能够承受所有可能条件的晶体。
频率稳定性
信誉良好的制造商通过两种方式识别石英晶体的频率稳定性：在可接受的工作温度范围内的频率偏差和每次温度变化的频率偏差。这些数字为工程师提供了足够的信息，以确定适合其系统的时序解决方案。能够预测温度波动对每个潜在时序解决方案的影响，使工程师能够做出最明智的选择。
负载电容
为了在振荡器内保持最精确的频率，必须考虑电路的正确负载电容。负载电容是指与石英晶体本身并联的外部电路电容量。石英晶体专门制造用于在指定的负载电容范围内工作，因此必须确定系统的需求并将其与您采购的定时解决方案相结合。
包装
选择石英晶体要了解的必要参数,ECS-265.971-CD-0382晶振，虽然性能不受晶体封装尺寸的影响，但许多电路板设计失败是因为没有考虑每个组件的尺寸。封装尺寸最终取决于频率要求。所需频率越低，晶体需要越长。影响晶体封装尺寸的其他因素包括：
气密密封：为了减少老化并实现最佳性能，您的石英振荡器晶体封装将始终是密封的。虽然气密密封是必要的，但它也会增加封装尺寸，必须在电路设计中加以考虑。
安装类型：THT安装的石英晶体比SMD晶体使用更广泛，但尺寸更大。石英振荡器本身的尺寸无法缩小，但切换到采用SMD安装晶体封装的振荡器将为您的设计节省一些空间。并非所有石英晶体相同的安装形式，因此在原始设计中考虑空间仍然很重要。

ECS原厂编码	型号	类型	频率	频率容差	频率偏差度	负载电容
ECS-071.505-CD-0370	CSM-7	MHz Crystal	7.1505MHz	±30ppm	±20ppm	12pF
ECS-071.505-CD-0370TR	CSM-7	MHz Crystal	7.1505MHz	±30ppm	±20ppm	12pF
ECS-071.505-CDX-0370	CSM-7	MHz Crystal	7.1505MHz	±30ppm	±20ppm	12pF
ECS-098.438-CD-0371	CSM-7	MHz Crystal	9.8438MHz	±30ppm	±20ppm	12pF
ECS-098.438-CD-0371TR	CSM-7	MHz Crystal	9.8438MHz	±30ppm	±20ppm	12pF
ECS-098.438-CDX-0371	CSM-7	MHz Crystal	9.8438MHz	±30ppm	±20ppm	12pF
ECS-100-18-5P-TR	CSM-7	MHz Crystal	10MHz	±50ppm	±30ppm	18pF
ECS-100-20-5PDP-TR	CSM-7	MHz Crystal	10MHz	±100ppm	±30ppm	20pF
ECS-100-S-5P-TR	CSM-7	MHz Crystal	10MHz	±50ppm	±30ppm	Series
ECS-110.5-20-5P-TR	CSM-7	MHz Crystal	11.0592MHz	±50ppm	±30ppm	20pF
ECS-110.5-32-5P-TR	CSM-7	MHz Crystal	11.0592MHz	±50ppm	±30ppm	32pF
ECS-110.5-S-5P-TR	CSM-7	MHz Crystal	11.0592MHz	±50ppm	±30ppm	Series
ECS-110-S-5P-TR	CSM-7	MHz Crystal	11MHz	±50ppm	±30ppm	Series
ECS-120.003-18-5PTR	CSM-7	MHz Crystal	12.000393MHz	±50ppm	±30ppm	18pF
ECS-120-18-5P-TR	CSM-7	MHz Crystal	12MHz	±50ppm	±30ppm	18pF
ECS-120-20-5PDN-TR	CSM-7	MHz Crystal	12MHz	±100ppm	±30ppm	20pF
ECS-120-32-5P-TR	CSM-7	MHz Crystal	12MHz	±50ppm	±30ppm	32pF
ECS-120-S-5P-TR	CSM-7	MHz Crystal	12MHz	±50ppm	±30ppm	Series
ECS-122.8-20-5P-TR	CSM-7	MHz Crystal	12.288MHz	±50ppm	±30ppm	20pF
ECS-122.8-S-5P-TR	CSM-7	MHz Crystal	12.288MHz	±50ppm	±30ppm	Series
ECS-130.625-CD-0373	CSM-7	MHz Crystal	13.0625MHz	±30ppm	±20ppm	12pF
ECS-130.625-CD-0373TR	CSM-7	MHz Crystal	13.0625MHz	±30ppm	±20ppm	12pF
ECS-130.625-CDX-0373	CSM-7	MHz Crystal	13.0625MHz	±30ppm	±20ppm	12pF
ECS-135.600-CD-0374	CSM-7	MHz Crystal	13.56MHz	±30ppm	±20ppm	12pF
ECS-135.600-CD-0374TR	CSM-7	MHz Crystal	13.56MHz	±30ppm	±20ppm	12pF
ECS-135.600-CDX-0374	CSM-7	MHz Crystal	13.56MHz	±30ppm	±20ppm	12pF
ECS-135.60-CDX-0317-TR	CSM-7	MHz Crystal	13.56MHz	±50ppm	±30ppm	10pF
ECS-143-20-5PDN-TR	CSM-7	MHz Crystal	14.31818MHz	±100ppm	±30ppm	20pF
ECS-143-20-5P-TR	CSM-7	MHz Crystal	14.31818MHz	±50ppm	±30ppm	20pF
ECS-143-S-5P-TR	CSM-7	MHz Crystal	14.31818MHz	±50ppm	±30ppm	Series
ECS-147.4-20-5P-TR	CSM-7	MHz Crystal	14.7456MHz	±50ppm	±30ppm	20pF
ECS-147.4-S-5P-TR	CSM-7	MHz Crystal	14.7456MHz	±50ppm	±30ppm	Series
ECS-150-S-5P-TR	CSM-7	MHz Crystal	15MHz	±50ppm	±30ppm	Series
ECS-160.003-18-5PTR	CSM-7	MHz Crystal	16.000312MHz	±50ppm	±30ppm	18pF
ECS-160-20-5PDN-TR	CSM-7	MHz Crystal	16MHz	±100ppm	±30ppm	20pF
ECS-160-20-5P-TR	CSM-7	MHz Crystal	16MHz	±50ppm	±30ppm	20pF
ECS-160-S-5P-TR	CSM-7	MHz Crystal	16MHz	±50ppm	±30ppm	Series
ECS-162.5-20-5P-TR	CSM-7	MHz Crystal	16.257MHz	±50ppm	±30ppm	20pF
ECS-162.5-S-5P-TR	CSM-7	MHz Crystal	16.257MHz	±50ppm	±30ppm	Series
ECS-180-S-5P-TR	CSM-7	MHz Crystal	18MHz	±50ppm	±30ppm	Series
ECS-184-18-5P-TR	CSM-7	MHz Crystal	18.432MHz	±50ppm	±30ppm	18pF
ECS-184-20-5PDN-TR	CSM-7	MHz Crystal	18.432MHz	±100ppm	±30ppm	20pF
ECS-184-20-5P-TR	CSM-7	MHz Crystal	18.432MHz	±50ppm	±30ppm	20pF
ECS-184-S-5P-TR	CSM-7	MHz Crystal	18.432MHz	±50ppm	±30ppm	Series
ECS-196.6-20-5P-TR	CSM-7	MHz Crystal	19.6608MHz	±50ppm	±30ppm	20pF
ECS-196.6-S-5P-TR	CSM-7	MHz Crystal	19.6608MHz	±50ppm	±30ppm	Series
ECS-196-20-5PDN-TR	CSM-7	MHz Crystal	19.6608MHz	±100ppm	±30ppm	20pF
ECS-200-16-5P-TR	CSM-7	MHz Crystal	20MHz	±50ppm	±30ppm	16pF
ECS-200-20-5PDN-TR	CSM-7	MHz Crystal	20MHz	±100ppm	±30ppm	20pF
ECS-200-20-5P-TR	CSM-7	MHz Crystal	20MHz	±50ppm	±30ppm	20pF
ECS-200-S-5P-TR	CSM-7	MHz Crystal	20MHz	±50ppm	±30ppm	Series
ECS-203.563-CD-0375	CSM-7	MHz Crystal	20.3563MHz	±30ppm	±20ppm	12pF
ECS-203.563-CD-0375TR	CSM-7	MHz Crystal	20.3563MHz	±30ppm	±20ppm	12pF
ECS-203.563-CDX-0375	CSM-7	MHz Crystal	20.3563MHz	±30ppm	±20ppm	12pF
ECS-204.8-20-5P-TR	CSM-7	MHz Crystal	20.48MHz	±50ppm	±30ppm	20pF
ECS-226.278-CD-0376	CSM-7	MHz Crystal	22.6278MHz	±30ppm	±20ppm	12pF
ECS-226.278-CD-0376TR	CSM-7	MHz Crystal	22.6278MHz	±30ppm	±20ppm	12pF
ECS-226.278-CDX-0376	CSM-7	MHz Crystal	22.6278MHz	±30ppm	±20ppm	12pF
ECS-232.643-CD-0377	CSM-7	MHz Crystal	23.2643MHz	±30ppm	±20ppm	12pF
ECS-232.643-CD-0377TR	CSM-7	MHz Crystal	23.2643MHz	±30ppm	±20ppm	12pF
ECS-232.643-CDX-0377	CSM-7	MHz Crystal	23.2643MHz	±30ppm	±20ppm	12pF
ECS-235.122-CD-0378	CSM-7	MHz Crystal	23.5122MHz	±30ppm	±20ppm	12pF
ECS-235.122-CD-0378TR	CSM-7	MHz Crystal	23.5122MHz	±30ppm	±20ppm	12pF
ECS-235.122-CDX-0378	CSM-7	MHz Crystal	23.5122MHz	±30ppm	±20ppm	12pF
ECS-240.001-18-5PTR	CSM-7	MHz Crystal	24.00014MHz	±50ppm	±30ppm	18pF
ECS-240-16-5P-TR	CSM-7	MHz Crystal	24MHz	±50ppm	±30ppm	16pF
ECS-240-20-5PDN-TR	CSM-7	MHz Crystal	24MHz	±100ppm	±30ppm	20pF
ECS-240-20-5P-TR	CSM-7	MHz Crystal	24MHz	±50ppm	±30ppm	20pF
ECS-240-S-5P-TR	CSM-7	MHz Crystal	24MHz	±50ppm	±30ppm	Series
ECS-245.7-20-5P-TR	CSM-7	MHz Crystal	24.576MHz	±50ppm	±30ppm	20pF
ECS-250-18-5P-F-TR	CSM-7	MHz Crystal	25MHz	±50ppm	±30ppm	18pF
ECS-252.235-CD-0379	CSM-7	MHz Crystal	25.2235MHz	±30ppm	±20ppm	12pF
ECS-252.235-CD-0379TR	CSM-7	MHz Crystal	25.2235MHz	±30ppm	±20ppm	12pF
ECS-254.563-CD-0380	CSM-7	MHz Crystal	25.4563MHz	±30ppm	±20ppm	12pF
ECS-254.563-CD-0380TR	CSM-7	MHz Crystal	25.4563MHz	±30ppm	±20ppm	12pF
ECS-254.563-CDX-0380	CSM-7	MHz Crystal	25.4563MHz	±30ppm	±20ppm	12pF
ECS-264.513-CD-0381	CSM-7	MHz Crystal	26.4513MHz	±30ppm	±20ppm	12pF