电动汽车应用中的电磁干扰应当如何解决？多层陶瓷电容器是理想之选

时间： 2022-03-29 来源：Knowles

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根据美国交通统计局的统计数据（图1），截至2020年电动汽车 (EV) 销量已连续五年增长，同时市场需求也在持续增长。基于2021年第一季度销售数据，2021年度的销售额有望超过去年。

图1 美国十年间插电式电动汽车销售额

然而随着产量的增加，电动汽车也面临着许多独特的挑战，其中就包括如何应对更关键的电磁干扰 (EMI) 问题。电动汽车采用大功率电子设备来操作电机，从而易产生高功率、低频率的电磁干扰。虽然电磁干扰是电子应用中的常见问题，但电动汽车对安全性、效率和性能要求较高，若该问题得不到解决很可能会造成严重后果。

汽车电子中电磁干扰的来源

电磁干扰是干扰电缆信号并降低信号完整性的电子噪声，它通常由电磁辐射发生源产生。在电动汽车的组成部件中，电磁干扰的来源包括：

（1）电源转换器：它是电力系统中EMI的主要来源。电力驱动系统需要高速转换器件，如传统的绝缘栅双极晶体管 (IGBT)，可在 2 至 20 kHz 的频率范围内工作。快速的绝缘栅双极晶体管 (IGBT)和碳化硅 (SiC) 金属-氧化物半导体场效应晶体管 (MOSFET) 甚至可以在更高的频率下工作；

（2）电动机：电动机在高功率水平下运行，从而产生电磁辐射(EME)，并通过阻抗为电磁干扰提供路径；

（3）车载电池及其相关的连接电路：车载电池及其相关的连接电路中的电流成为电场和磁场 (EMF) 发射源，为电磁干扰创造路径；

（4）电缆：屏蔽和非屏蔽电缆在电动汽车的子系统之间承载高频电流并产生更强的磁场。由于布线空间有限，高低压电缆靠得很近，导致它们之间产生电磁干扰；

（5）车载电池充电系统和无线充电设施：这是主要的外部电磁干扰产生来源。与无线充电器连接会产生强大的磁场，以将电力传输到电动汽车中，而这易产生电磁干扰。

解决电动汽车中电磁干扰的途径：

1、使用宽带隙半导体是解决电磁干扰的途径之一

宽带隙 (WBG) 半导体，如碳化硅（SiC）和氮化镓 (GaN)，虽然具备良好的功率和效率，但更高的转换频率也会造成电磁干扰。基于碳化硅（SiC）的器件可搭载较小尺寸的无源EMI滤波器，但产生的电磁干扰往往集中在高频范围内，故而高频无源器件的非理想行为可能使滤波器设计成为一项挑战。基于此，调整滤波器方案以减小电感/电容值和滤波器尺寸是减小EPC和等效串联电感 (ESL) 的一种方法。

2、滤波电容器可以解决汽车电子应用中的电磁干扰

在汽车电子应用中，滤波电容器，也称为抗电磁干扰滤波器，通常用作输入和输出电容器，它们用于消除线路上的电子噪声和其他不需要的信号。在系统的高压交流 (AC) 侧，滤波电容器通常用于抗电磁干扰滤波，而在子系统的直流 (DC) 侧，它们用于平滑高压交流侧的纹波分量并滤除噪声。

目前有多种满足各类应用需求的滤波电容器可供选择。例如，对于高可靠性有要求的电子应用，需要使用通过安规认证的X级和Y级电容器。X级（线对线）电容器设计成短路失效模式，当发生过压事件时，短路失效模式会打开过流保护装置 (OCPD) ，从而防止触电的危险。Y级电容器（线对地）则通过设计成开路失效模式，在接地不通的情况下实现开路。

3、多层陶瓷电容器 (MLCC)是理想之选

高压电动汽车子系统的可靠性和安全性受到国家的严格审查，因此符合UL、TÜV、CSA、VDE和其他国际安全规范的X级和Y级多层陶瓷电容器 (MLCC) 是一个很好的选择。作为抑制射频干扰和电磁干扰（RFI/EMI）的各类X级和Y级电容器通常使用陶瓷或塑料薄膜为原材料，但由于某些电动汽车子系统对电容器有耐高温和小尺寸要求，MLCC是唯一可行的选择，因为它不会在恶劣的工作条件下熔化。

纵观目前市场上的多层陶瓷电容器，楼氏电容（KNOWLES）具有相当大的优势。他提供满足汽车电子应用的各类普通及安规认证电容，并于前不久推出了增强型安规电容，产品可分为四个独立系列。这类表贴式MLCC符合国际UL60384-14和EN60384-14规范，可用于替代AC-DC电源中的引脚类薄膜电容器，并满足按IEC-60384-14标准确定的Y2/X1、X1和X2等级要求。

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本文由观海听澜转载自Knowles，原文标题为:楼氏电容课堂 | 电动汽车应用中的电磁干扰应当如何解决？，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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车载型片式多层陶瓷电容器,电容器,车载型MLCC,MLCC,A101G0805C0G251ND*,A563K0402X7R160NB*,A122K0402X7R500NB*,A103K0201X7R250NA*,A332K0402X7R160NB*,A681M0402X7R100NB*,A122M0402X7R250NB*,A390F0603C0G101ND*,A682M0201X7R100NA*,A102M0603X7R101ND*,A122M0603X7R500ND*,A822F0805C0G500N5*,A151M0201X7R100NA*,A102K0201X7R160NA*,A180G0603C0G500ND*,A102K0402X7R101NB*,A332K0603X7R101ND*,A333K0402X7R250NB*,A563K0603X7R250ND*,A102M0603X7R250ND*,A105M0402X7S6R3NC*,A122K0201X7R250NA*,A331F1206C0G631NK*,A104M0402X7R250NB*,A331G1206C0G631NK*,A391G0603C0G101ND*,A102M0402X7R160NB*,A103M0201X7R160NA*,A123M0402X7R500NB*,A103F1206C0G101NE*,A104M0603X7R500ND*,A223G0805C0G500N5*,A101K0201X7R160NA*,A181J0603C0G500ND*,A562K0603X7R101ND*,A332K0201X7R160NA*,A390G0603C0G101ND*,A333K0603X7R250ND*,A3R9A0603C0G500ND*,A333M0603X7R250ND*,A474K0603X7R160ND*,A0R9A0603C0G500ND*,A103M0402X7R160NB*,A561F1206C0G631NK*,A121M0201X7R160NA*,A103K0402X7R500NB*,A102M0201X7R160NA*,A123G1206C0G101NE*,A2R4C0603C0G500ND*,A153F0805C0G500N5*,A563K0603X7R101ND*,A2R4A0603C0G500ND*,A102K0201X7R250NA*,A391M0402X7R500NB*,A391M0201X7R250NA*,A391K0402X7R500NB*,A121K0201X7R160NA*,A563M0603X7R160ND*,A104K0402X7R500NB*,A182J0603C0G500ND*,A393F1206C0G500NE*,A392M0402X7R500NB*,A270J0603C0G500ND*,A563K0603X7R160ND*,A104M0402X7R500NB*,A152M0201X7R100NA*,A431K0201X7R100NA*,A332K0603X7R250ND*,A122M0201X7R160NA*,A393J1206C0G101NE*,A391G0603C0G500ND*,A103M0201X7R250NA*,A392M0201X7R250NA*,A563M0402X7R160NB*,A181J0603C0G101ND*,A393K0805X7R101NE*,A332M0402X7R160NB*,A361K0201X7R100NA*,A122K0603X7R500ND*,A102K0603X7R101ND*,A474K0402X7S6R3NN*,A561G1206C0G631NK*,A333K0603X7R101ND*,A682M0402X7R100NB*,A105K0402X7S6R3NC*,A121F0603C0G101ND*,A8R2B0603C0G500ND*,A2R2A0603C0G500ND*,A104K0402X7R250NB*,A122M0201X7R250NA*,A333M0603X7R500ND*,A122M0603X7R250ND*,A563M0603X7R250ND*,A123K0402X7R500NB*,A103K0201X7R160NA*,A103G1206C0G101NE*,A332K0402X7R250NB*,A391F0603C0G500ND*,A101F0805C0G251ND*,A152M0402X7R100NB*,A474K0603X7R250ND*,A7R0D0603C0G500ND*,A121J1206C0G631NK*,A683M0402X7R100NB*,A103K0603X7R250ND*,A101J0805C0G251ND*,A103K0402X7R250NB*,A122M0402X7R101NB*,A121M0201X7R250NA*,A822G0805C0G500N5*,A332K0201X7R250NA*,A102K0603X7R250ND*,A103M0603X7R500ND*,A331K0402X7R101NB*,A2R4B0603C0G500ND*,A153G0805C0G500N5*,A333F1206C0G101NE*,A123F1206C0G500NE*,A122M0603X7R101ND*,A390F0603C0G500ND*,A393G1206C0G101NE*,A102K0402X7R250NB*,A123M0402X7R250NB*,A333M0402X7R160NB*,A332K0402X7R101NB*,A123K0603X7R500ND*,A682F0805C0G500N5*,A681M0201X7R100NA*,A102M0603X7R500ND*,A562K0603X7R500ND*,A392K0201X7R250NA*,A563K0402X7R500NB*,A391J1206C0G631NK*,A392M0201X7R160NA*,A332K0402X7R500NB*,A393M0805X7R101NE*,A103F1206C0G500NE*,A122K0402X7R160NB*,A121G1206C0G631NK*,A5R1B0603C0G500ND*,A2R2C0603C0G500ND*,A822M0201X7R100NA*,A561K0201X7R160NA*,A361M0201X7R100NA*,A224K0603X7R250ND*,A223K0603X7R101ND*,A8R2C0603C0G500ND*,A224M0603X7R160ND*,A8R2D0603C0G500ND*,A391K0201X7R160NA*,A273M0402X7R100NB*,A123M0603X7R250ND*,A222M0201X7R100NA*,A682K0402X7R100NB*,A473K0603X7R101ND*,A183J1206C0G101NE*,A471K0201X7R100NA*,A823K0603X7R101ND*,A104M0603X7R160ND*,A2R7C0603C0G500ND*,A103K0603X7R101ND*,A153M0402X7R100NB*,A102M0402X7R500NB*,A391K0402X7R250NB*,A221K0201X7R100NA*,A821K0201X7R100NA*,A823M0603X7R160ND*,A683J1206C0G500N1*,A101M0201X7R160NA*,A822M0402X7R100NB*,A0R8A0603C0G500ND*,A122K0201X7R160NA*,A104K0402X7R160NB*,A272J0603C0G500ND*,A331J1206C0G631NK*,A332M0201X7R160NA*,A272M0402X7R100NB*,A392M0603X7R500ND*,A392K0402X7R500NB*,A101K0201X7R250NA*,A3R9C0603C0G500ND*,A2R2B0603C0G500ND*,A103M0402X7R500NB*,A5R6C0603C0G500ND*,A561J1206C0G631NK*,X7R,A103G1206C0G500NE*,X7T,A821K0402X7R100NB*,X7S,A392M0402X7R160NB*,A392K0603X7R500ND*,A221K0402X7R100NB*,A221M0402X7R100NB*,A392K0402X7R250NB*,A821M0402X7R100NB*,A474M0603X7R160ND*,A391K0402X7R101NB*,A0R7A0603C0G500ND*,A563K0603X7R500ND*,A393F1206C0G101NE*,A103K0402X7R160NB*,A271J0603C0G500ND*,A6R8C0603C0G500ND*,A8R0B0603C0G500ND*,A391M0402X7R160NB*,A222M0402X7R100NB*,A223K0603X7R250ND*,A5R0B0603C0G500ND*,A431M0201X7R100NA*,A823K0603X7R250ND*,A473K0402X7R160NB*,A561K0402X7R160NB*,A104M0402X7R160NB*,A154M0603X7R160ND*,A391K0402X7R160NB*,A152K0201X7R100NA*,A392K0402X7R101NB*,A2R0B0603C0G500ND*,A221M0201X7R100NA*,A821M0201X7R100NA*,A391J0603C0G101ND*,A0R6A0603C0G500ND*,A183F1206C0G500NE*,A3R6A0603C0G500ND*,A5R6D0603C0G500ND*,A221F1206C0G631NK*,A472K0402X7R160NB*,A562K0402X7R500NB*,A153K0603X7R101ND*,A682K0201X7R100NA*,A224M0603X7R250ND*,A391K0201X7R250NA*,A683J1206C0G101N1*,A151K0201X7R100NA*,C0G,A821F1206C0G631NK*,A0R9B0603C0G500ND*,A3R9B0603C0G500ND*,A562K0402X7R160NB*,A331K0402X7R160NB*,A104K0603X7R500ND*,A122J0603C0G500ND*,A103J0805C0G500N5*,A180J0603C0G500ND*,A153K0402X7R100NB*,A154K0603X7R250ND*,A333F1206C0G500NE*,A332K0603X7R500ND*,A391M0201X7R160NA*,A331K0402X7R500NB*,A104K0603X7R160ND*,A331K0201X7R160NA*,A102K0402X7R160NB*,A121G0603C0G101ND*,A681K0402X7R100NB*,A102K0402X7R500NB*,A223F0805C0G500N5*,A223M0603X7R101ND*,A473K0603X7R500ND*,A152K0402X7R100NB*,A683K0402X7R100NB*,A3R6B0603C0G500ND*,A103K0603X7R500ND*,A473J1206C0G500N1*,A0R6B0603C0G500ND*,A2R0C0

2022/9/2 - 数据手册代理服务技术支持采购服务

多层陶瓷电容器 ATF 16949:2016 质量管理体系 (bsi) Certificate of Registration (690871)

楼氏电子（苏州）有限公司获得BSI颁发的IATF 16949:2016质量管理体系认证，认证范围涵盖多层陶瓷电容器的设计和制造。证书有效期为2024年9月18日至2027年9月17日。此外，Knowles (UK) Ltd.和Knowles Distribution Sdn. Bhd.也获得相同认证，分别涉及产品设计、销售、供应商管理以及顾客服务、仓储、分配、物流、包装等领域。

KNOWLES - MULTILAYER CERAMIC CAPACITORS,多层陶瓷电容器

2024-09-18 - 测试报告代理服务技术支持采购服务

Knowles（楼氏电子）多层陶瓷电容器选型指南

At Knowles Capacitors, they make Single Layer, Multilayer, High Reliability and Precision Variable Capacitors; EMI Filters; and Thin Film Devices.

KNOWLES - HIGH RELIABILITY CAPACITORS,高Q值、高功率RF电容器,HIGH TEMPERATURE CAPACITORS,TCC CAPACITORS,电容器,SURFACE MOUNT EMI FILTERS,高温电容器,VCC CAPACITORS,PULSE ENERGY CAPACITORS,MLC CAPACITORS,HIGH VOLTAGE CAPACITORS,SM EMI滤波器,VCC电容器,脉冲能量电容器,ULTRA-LOW ESR HIGH Q MLCCS,串联电容器,HITECA™电容器,ULTRA LOW ESR CERAMIC CAPACITORS,非磁性电容器,陶瓷片式电容器,STACKICAP™电容器,HIGH CAPACITANCE CHIP,VC1 RESIDUAL CAPACITORS,安全认证电容器,高温径向引线电容器,MLC电容器,STACKICAP™ CAPACITORS,HITECA™ CAPACITORS,径向引线电容器,高电容芯片,OPEN MODE CAPACITORS,CAPACITORS,TANDEM CAPACITORS,HIGH Q, HIGH POWER RF CAPACITORS,表面贴装EMI滤波器,HIGH Q PORCELAIN CAPACITORS,开路模式电容器,SM EMI FILTERS,NON-MAGNETIC CAPACITORS,VC1剩余电容,引线式隔离电容器,超低ESR高Q值MLCC,RADIAL LEADED CAPACITORS,HIGH TEMPERATURE RADIAL LEADED CAPACITORS,LEADED STANDOFF CAPACITORS,超低ESR陶瓷电容器,高可靠性电容器,高压电容器,CERAMIC CHIP CAPACITORS,TCC电容器,高Q值陶瓷电容器,SAFETY CERTIFIED CAPACITORS,XX1206N472J101NX050HTM-HB,UL SERIES,085J2500101JHT,404027K00470GQB-AF9,E01,0603 H,E03,E07,1206Y0500224KXT---,0805B123K501LEAR,SV2220,1210Y1000103KXT---,C17CF620J-7UN-X0T,1206J1000103MXTH20,1210Y2000103KCT---,2220YA300563KSTS3X,CR1206N562K101NHT-4,1812Y1000334MXTE03,RG3640R124K102PX---T,2225B3K06P80GQBRW221,8111M1000102JC□□□□□,1812YA250103KJT,1206G224K250NX050HTM,2220B1K00104JETJ,8131T,1206Y1000103MXTE07,8151M,8171M,1808JA250102KJTSYX,8111M,120625000223JQT--,8111N,C17UL620J7UNX-0T,8131M,0603J0500471JBB_ _ _,1206W476K6R3NX080T,1808JA250102GJTS2X,0805 H SERIES,0805J2504P70BUT,1812Y5000474KJT,C17CF470J7WAX0B,C17CF620J7UN-X0T,0603 H SERIES,1812Y5000474KJTWS2,1206Y1000473KNT,1206HD272F101NGHT,MD0603N102J500NHT-BA,MD0603BW102K500NHT-BA,AH SERIES,MD SERIES,CF SERIES,0805 H,1808JA250102GJTSYS,2520E563K501LGWR,1206YA120103JXT,C17AH620J-7UA-X0T,8121T,RC3640R124K102PX---T,1206G500391JGTH25,8161M,1206RE331J501NHT,0805Y1000103KST---,1206Y1K00152KXTVC1,8121M,8165M,8121N,8141M,ST3640B474M101LJXW-5R,8111M1000102JC□□□□□□,1210Y1000103JDT_ _ _,SV2220BB476M101LJW-10R,延迟线,功率处理,天线匹配,ROCKET IGNITION,DIPLEXERS,交直流电源,定时电路,POWER HANDLING,TIMING CIRCUITS,火箭点火,高RF功率电路,HIGH RF POWER CIRCUITS,电信设备,反馈,IMPEDANCE MATCHING,POWER DISTRIBUTION SWITCHGEAR,振荡器,DC BLOCKING,FEEDBACK,DELAY LINES,RF POWER AMPLIFIERS,放大器匹配网络,COUPLING,AMPLIFIER MATCHING NETWORKS,压控振荡器频率稳定,FILTERING,井下爆炸,AC/DC POWER SUPPLIES,双工器,VCO FREQUENCY STABILIZATION,汽车应用,军事引爆,MILITARY DETONATION,过滤,耦合,TUNING,OSCILLATORS,TELECOMS EQUIPMENT,射频功率放大器,DOWN HOLE DETONATION,ANTENNA MATCHING,AUTOMOTIVE APPLICATIONS,BYPASS,旁通,配电开关设备,阻抗匹配,调谐,直流闭锁

2024/2/15 - 选型指南代理服务技术支持采购服务

多层陶瓷电容器注意事项和指南

本资料提供了多层陶瓷电容器的设计、安装、焊接和使用指南。内容包括电容器的性能限制、环境适应性、电路设计注意事项、PCB布局建议、安装和焊接过程中的安全措施，以及存储和处理规范。此外，还介绍了针对汽车电子应用的可靠性测试标准AEC-Q200，并强调了产品规格可能变更的重要性。

NIPPON CHEMI-CON - MULTILAYER CERAMIC CAPACITORS,多层陶瓷电容器

2024/4/3 - 用户指南代理服务技术支持采购服务

【经验】解析SLC和MLCC这两种电容器的应用

在电路设计初期，工程师们就需要决定是选用单层电容器(SLC）还是多层陶瓷电容器（MLCC）来满足应用需求。今天Knowles（楼氏）和你分享如下:总的来说，两者似乎有类似的功用，因为无论是SLC还是MLCC，它们都可作电路中的充储电、滤波或旁路之用。

2022-05-10 - 设计经验代理服务技术支持采购服务

【经验】解析多层陶瓷电容器的容值与电压的变化关系

设计多层陶瓷电容器（MLCC）时，工程师经常关注的一个问题是容值是否会随着电压的变化而波动——又称 “直流偏压 “或 “电压系数“。本文Knowles主要解析多层陶瓷电容器的容值与电压的变化关系，以及介绍新型电介质材料Hiteca™。

2022-03-14 - 设计经验代理服务技术支持采购服务

1206Y1000223MSTE03多层片式陶瓷电容器

本资料介绍了Knowles Precision Devices生产的1206尺寸的多层陶瓷片式电容器（MLCC），型号为1206Y1000223MSTE03。该电容器具有低感抗、增强性能的特点，适用于平衡线路应用，提供多种终止选项，包括FlexiCap™柔性终止。产品符合AEC-Q200汽车规格。

KNOWLES - MULTILAYER CERAMIC CHIP CAPACITOR,多层陶瓷贴片电容器,CERAMIC MLCC BYPASS 'C' FILTERS,陶瓷MLCC旁路“ C ”滤波器,1206Y1000223MSTE03,BALANCED LINE APPLICATIONS,平衡线应用

August 30, 2024 - 数据手册代理服务技术支持采购服务

Knowles（楼氏电子）多层&单层陶瓷电容器和薄膜器件选型指南

Introduction Single Layer Capacitors Multilayer Ceramic Capacitors Broadband Blocking Capacitors Thin Film Devices

KNOWLES - BROADBAND BLOCKS,定制陶瓷元件,BAR CAPACITORS,二元可调电容,THIN FILM GAIN EQUALIZERS,N30陶瓷电容器,高介电常数陶瓷基板,BIAS FILTER NETWORK,带通滤波器,THIN FILM GAIN EQUALIZE,间隙盖,传输线电容器,单层电容器,GAP CAPS,THIN FILM CERAMIC FILTERS,PORCELAIN CAPACITORS,GPS过滤器,SELF BIAS NETWORK,THIN FILM CERAMIC FILTER,CERAMIC FILTER,表面贴装低通滤波器,HIGH Q CAPACITORS,CUSTOM CERAMIC COMPONENTS,ULTRA LOW ESR CERAMIC CAPACITORS,MLC CAPACITORS,THIN FILM RESONATOR,HIGH-Q MLC CAPACITORS,SMD毫米波电容器,MLC电容器,GPS FILTERS,N30 PORCELAIN CAPACITORS,BINARY TUNABLE CAP,SMD MILLIMETER WAVE CAPACITOR,GAIN EQUALIZER,陶瓷谐振器,SMT FILTER,MULTILAYER CERAMIC CAPACITORS,P90 PORCELAIN CAPACITORS,微型射频阻塞网络,HIGH-K CERAMIC SUBSTRATES,THIN FILM DEVICES,LOW ESR MLC CAPACITORS,SLC电容器,薄膜陶瓷滤波器,CERAMIC RESONATORS,ULTRASTABLE PORCELAIN CAPACITORS,END COUPLED FILTER,SLC CAPACITORS,高Q值MLC电容器,薄膜增益均衡器,ULTRASTABLE PORCELAIN CAPACITORSTERMINATIONS,THIN FILM - GAIN EQUALIZER,HIGH-K CERAMIC PLATES,SINGLE FREQUENCY CAVITY RESONATOR,宽带隔直电容器,BANDPASS FILTER,多层陶瓷电容器,增益均衡器,超稳陶瓷电容器,P90陶瓷电容器,高K陶瓷板,SYMMETRIC DUAL MODE RESONATOR FILTER,THIN FILM RESONATORS,条形电容器,薄膜谐振器,MINIATURE RF BLOCKING NETWORK,超低ESR陶瓷电容器,TRANSMISSION LINE CAPACITOR,端耦合滤波器,COUPLED FILTER,SINGLE LAYER CAPACITORS,BROADBAND BLOCKING CAPACITORS,FILTER,威尔金森功率分配器,单频谐振腔,低ESR MLC电容器,WILKINSON POWER DIVIDER,对称双模谐振滤波器,自偏置网络,SURFACE MOUNT LOWPASS FILTER,E40BU151Z1PX4,UL SERIES,L128XH4S,J30XXBA012LX4,F15NR0R1M1PX3,P_2CF0R3B5ST,P21BN300MA3976,S20CG250DZNX,C06BL851X-1UN-X0T,G10BU100K5PX10,P21BN300MA04678,NA SERIES,F25NR0R4M1PX3,P_2NR3R0K5ST,P21BN300MA04282,P_2CF0R5B5ST,B056RC4S,C17CF620J-7UN-X0T,D10XXKITA1EX,P62BN820MA02636,D10XXKITA5PX,D10CF0R1B5PX,F20CG0R1M1PX3,B096QC2S,D10BN100K1EX,G20XXKITAPX10,F35CF0R1M1PX3,P21300MA4678,B033ND5S,D15XXKITA5PX,L065XG9S,F25CG0R2M1PX3,P_2BN820Z5ST,P_2CD0R7B5ST,L254XF3S,L095XG9S,C08BL242X-5UN-X0T,D20XXKITA5PX,P21300MA4282,F15CGR08M5PX3,P42BN820MA03152,B28BLSBN01,P21BN300MA04572,L204XF4S,C04BL121X-5UN-X0T,C18BL103X-4GN-XOT,D15XXKITA1EX,F25CFR08M5PX3,PDW05758,D30XXKITA1EX,F20NR0R2M1PX3,P21BN300MA04733,B028RF2S,J30BLBA032LX1,G10XXKITAPX05,AH SERIES,J30XXBA002LX3,P42BN820MA04679,CF SERIES,P_2CG1R5C5ST,T30BV30X45PX,P21300MA4572,P_2CG1R0C5ST,L117XH4S,G15XXKITAPX08,D30XXKITA5PX,D20XXKITA1EX,F40NR0R5M1PX4,G25XXKITAPX10,D25XXKITA5PX,C17AH620J-7UA-X0T,D25XXKITA1EX,F35CG0R4M1PX3,P21BN300MA03976,P21300MA4733,C08BL102X-1UN-X0T,B28BTBFN01,L157XG3S,B148QF0S,C17UL620J-7UN-X0T

2017/5/10 - 选型指南代理服务技术支持采购服务

【经验】解析ESR对陶瓷电容器的选择有什么影响

本文Knowles（楼氏电容）将解析ESR对陶瓷电容器的选择有什么影响，供工程师参考及使用。

2022-03-30 - 设计经验代理服务技术支持采购服务

多层陶瓷电容器和直通滤波器环境管理体系-ISO 14001:2015 BSI注册证书（EMS 68436）

Knowles (UK) Ltd 已获得ISO 14001:2015环境管理体系认证，证书编号为EMS 68436。该认证覆盖其销售、设计和制造多层陶瓷电容器和馈通滤波器的业务范围。认证有效期为2022年10月24日至2025年10月23日。证书由BSI（英国标准协会）签发，可通过BSI官方网站进行验证。

KNOWLES - MULTILAYER CERAMIC CAPACITORS,FEEDTHROUGH FILTERS,馈通过滤器,多层陶瓷电容器

2022-10-24 - 测试报告代理服务技术支持采购服务