【应用】适用于NFC匹配电路滤波和滤噪的国产电感解决方案,高Q值、DCR低
NFC是Near Field Communication缩写,即近距离无线通讯技术。当其靠近同样安装NFC功能的设备,在几厘米左右的短距离内能够进行通信的功能。NFC优于红外和蓝牙传输方式,是一种面向消费者的交易机制,相对于红外更快、更可靠和更简单。与蓝牙相比,注重面向近距离交易,而蓝牙能够弥补NFC通信距离不足的缺点,适用于较长距离数据通信。
随着智能手机的发展,苹果、三星、小米和华为等手机都支持NFC,可以实现公交刷卡、手机公交支付、线下支付等诸多非常方便的快捷服务。NFC信号频率为13.56MHz,其天线滤波+匹配电路(如下图所示)要求对有用信号损失小,无用信号滤波效果好,选频特性好,因此要求电感器件有合适的电感值(滤波)、DCR小、Q值高(低损耗)。
Sunlord NFC匹配电路解决方案
NFC线路用叠层电感MCL-N系列采用迭层独石结构、具有高可靠性,良好的可焊性和耐焊性,良好的磁屏蔽,通过磁体材料的改进,具有低DCR,高偏置电流,高精度等特性,相较于普通信号线用铁氧体电感具有较大的额定电流,Q值较高,性价比好,适合用于NFC输出滤波和匹配电路,电源线等。
2、NFC线路用绕线铁氧体电感MWSD1005F系列/WL1608FS系列
该系列采用片式绕线结构,系列齐全,电感量范围宽,产品额定电流大,Q值高,适合NFC匹配线路滤波。此外,该产品自谐频率高,高频阻抗特性好且THD+N性能好,非常适合音频信号线路滤噪。
特性:
SMD结构适合高密度安装;
DCR小,额定电流大;
电感量范围宽;
高精度,高Q。
MCL-N与WL-FS两者差异性
MCL-N系列,叠层铁氧体结构,磁屏蔽效果好,经过材料优化,偏置电流大幅度提升。相较于同尺寸、同电感量的WL-FS系列,价格优势明显。对于一些低成本方案的NFC匹配滤波线路,MCL-N系列是首选。
WL-FS系列,绕线铁氧体结构,电感量范围宽,Q值高且电流偏置特性好,具有NFC匹配电路所需的大电流,低DCR,低频滤波特性好等特点,适用于对NFC匹配有高要求的线路。该系列高频阻抗特性好,THD+N谐波失真小,音频信号线路应用也是不二选择。
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可定制车规级电感的电流范围0.3~17.9A,尺寸最小1x0.55x0.5mm到最大12.5x12.5x6mm,工作频率100KHz~2MHz,感值范围:0.47uH~4.7mH。符合IATF16949和AECQ-200。SPQ为5K。
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可定制电感最大电流100A,尺寸最小7 x 7 x 3.0mm到最大35 x 34 x 15.5 mm,工作频率100KHZ ~ 2MHZ,感值范围:0.15 ~ 100uh;支持大功率电感,扁平线电感,大电流电感,高频电感,汽车电感器,车规电感,一体成型电感等定制。
最小起订量: 5000 提交需求>
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