为何这款无源晶振ABLS-LR-24.000MHZ-T能得到无线模块的青睐？There are four main sources of heat generation from inductor losses when operating in an application.
They can be categorized into two groups referred to as copper losses and core losses.
1. Copper losses – these are losses primarily due to the inherent DC resistance (DCR) of the inductor’s wire. The wire has a known DC resistance which is a function of the wire length and the cross-sectional area of the wire (aka gauge). The DCR parameter can be found in all the Abracon inductor’s datasheets.
The power dissipated from the effects of the DCR are:
There is, however, a frequency component to copper loss due to what is called the skin effect and
proximity effect. The skin effect is where the electrons traveling through a conductor’s magnetic field are forced towards the outside ‘skin’ of the wire. As frequency increases, the skin effect strengthens causing AC resistance to increase. 
The proximity effect further reduces current (increases resistance) due to magnetic fields of adjacent wires within the coil. Inductor coils with more turns and tightly packed windings will be affected greater by the proximity effect. Power dissipation from these AC effects is calculated by taking the RMS value of only the change in current seen by the inductor (sometimes called ripple current), squaring the RMS value and multiplying by the equivalent AC resistance.
AC resistance (ACR) is a difficult parameter to document due to its dependency on so many factors.
Abracon suggests that designers use an empirical method of measuring the copper loss from AC sources like the skin and proximity effects.
在应用中运行时，电感损耗产生的热量主要有四种来源。
它们可以分为两类，称为铜损失和芯损失。
1. 铜损耗——这些损耗主要是由于电感导线的固有直流电阻(DCR)造成的。导线有一个已知的直流电阻，它是导线长度和导线截面积的函数(又称量规)。而石英晶振低损耗恰好能够填补，DCR参数可以在所有Abracon电感器的数据表中找到。

从DCR的效果中耗散的能量是:

然而，由于所谓的蒙皮效应和铜损耗有一个频率成分邻近效应。蒙皮效应是指电子通过导体的磁场时被强迫向导线的外部“蒙皮”移动。无源晶振的频率有效增加，随着频率的增加，蒙皮效应增强，导致交流电阻增加。

由于线圈内相邻导线的磁场，邻近效应进一步减少电流(增加电阻)。线圈匝数多、缠绕紧密的电感线圈受接近效应的影响较大。这些交流效应的功耗是通过取电感看到的电流变化的有效值(有时称为纹波电流)，平方有效值并乘以等效的交流电阻来计算的。

Manufacturer Part Number  原厂编码	Manufacturer厂家	Series型号	Type 系列	Frequency频率	Package / Case包装/封装
ABLS-LR-20.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	20MHz	HC49/US
ABM10-19.200MHZ-E20-T	Abracon晶振	ABM10	MHz Crystal	19.2MHz	4-SMD, No Lead
ABLS-LR-16.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	16MHz	HC49/US
ABM10-16.3676MHZ-E20-T	Abracon晶振	ABM10	MHz Crystal	16.3676MHz	4-SMD, No Lead
ABLS-LR-6.7458MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	6.7458MHz	HC49/US
ABLS-LR-8.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	8MHz	HC49/US
ABLS-LR-5.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	5MHz	HC49/US
ABLS-LR-3.579545MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	3.579545MHz	HC49/US
ABLS-LR-24.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	24MHz	HC49/US
ABLS-LR-4.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	4MHz	HC49/US
ABLS-LR-9.8304MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	9.8304MHz	HC49/US
ABLS-LR-10.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	10MHz	HC49/US
ABLS-LR-12.000MHZ-T	Abracon晶振	ABLS-LR	MHz Crystal	12MHz	HC49/US

为何这款无源晶振ABLS-LR-24.000MHZ-T能得到无线模块的青睐？交流电阻(ACR)是一个难以记录的参数，因为它依赖于如此多的因素。Abracon建议设计师使用经验方法来测量来自交流电的铜损失，如皮肤和邻近效应。随着市场对于石英晶体谐振器的参数要求增加，优化了许多优质的产品线。