Knowles提供高Q值多层陶瓷电容器，有效帮助降低功率损耗并缓解高频应用中产生过多热量的问题

时间： 2022-12-10 来源：Knowles官网

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射频能量的产生对于包括磁共振成像（MRI）、半导体制造、激光器和无线充电系统在内的广泛技术至关重要，这些技术需要高频电流和最小功率损耗。例如，对于工业激光器，RF等离子体激发（当电子断开原子键并形成等离子体时）需要1kHz至40.68MHz的RF源，具体取决于所需的能量，例如CO₂激光器RF电源包含13.56MHz、81MHz或125MHz的标准源。

这些需要高频电流的应用面临谐振电路中功率损耗的挑战，这是一个问题，因为保持电源内的效率是优化性能的关键。在元件级别，通过考虑等效串联电阻（ESR）来计算功率损耗，ESR是与电容器串联的非理想电阻的测量值。 ESR 越高，电容器的损耗就越大。

通过生成特定频率来提供更高效率的电路示例是LC或“谐振”电路。在谐振电路中，电容器将能量存储在电场中并阻止电压变化，而电感器将能量存储在磁场中并阻止电流变化。当放在电路中时，电容器和电感器的能量会来回反弹或振荡。电容和阻抗的正确组合决定了能量振荡的频率，即所谓的谐振频率。通过启用所需范围内的特定频率，可以在需要高频的应用中将功率损耗降至最低。

为了帮助射频和电气工程师确保高频应用所需的谐振电路的高性能和可靠性，KNOWLES Precision Devices提供高Q值多层陶瓷电容器（MLCC）。这些MLCC的设计和测试旨在克服开发需要最小功率损耗的高频设备的挑战。下面一起仔细看看这是如何完成的。

高Q值MLCC——提高电路性能的关键

为了帮助电气和射频工程师克服这些电阻挑战，尤其是在高频应用中，Knowles Precision Devices提供了一系列高Q值MLCC。要了解高Q值MLCC如何帮助降低功率损耗并缓解高频应用中产生过多热量的问题，让我们首先讨论Q因数（品质因数）的衡量标准。Q因数是用于评估和比较MLCC的品质因数。谐振器的Q表示为每个振荡周期存储的能量与损失的能量之比。谐振器的总损耗随着Q因子的下降而增加，对于较低的谐振器Q值，谐振器的总损耗将随频率增加得更快。

使用高Q材料构建的MLCC具有较低的εr值，并且通常构建在pF范围内，目的是降低功率损耗。例如，如果在MLCC中使用标准C0G（一种稳定的I类电介质），MLCC可以在更高频率下工作并且不太容易过热。因此，选择MLCC等高Q元件对于需要产生RF能量的设备和应用非常重要。Knowles Precision Devices提供基于各种高Q电介质的MLCC，包括超低ESR、高温、高功率、超稳定和有引线的选项。

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工业级P/B系列工业级中高压系列通用型系列通用中高压系列低损耗系列大功率低损耗系列车载系列车载低损耗系列

宇阳 - 高频MLCC,超微型MLCC,HIGH RELIABILITY MLCC,小型化MLCC,高可靠性MLCC,MLCC,HIGH FREQUENCY MLCC,ULTRA MICRO MLCC,P0805C0G9R1D251N#E,B0105X5R331K6R3N#Z,B0105X7R560K160N#Z,P0805C0G620G251N#E,B0201C0G3R0A250N#A,B0201X7R181M500N#A,P0805X8G1R2A501N#E,B0402C0G221K500N#B,P0805X8G4R7A251N#E,B0603C0G182G250N#D,B0805X5R153M101N#H,B0105C0G151J250N#Z,B0201X7R271J160N#A,B0805X5R223K101N#Y,B0402X7R102M250N#B,P0201C0G4R0B201N#A,B0402X7R121M500N#B,P0805C0G5R1B251N#E,P0805C0G150G251N#E,P0201X8G5R6B201N#A,B1206X5R822M101N#O,B0805X5R153M101N#Y,P0603X8G120J251N#U,P0201C0G2R0A201N#A,B0402C0GR68B250N#B,B0402C0G8R0A500N#B,P0603C0G8R2D251N#U,P0201X8G3R6A201N#A,B0805X5R103J631N#H,B0105C0G0R9B160N#Z,B0201X7R102M160N#A,B0805X5R472M631N#H,P0603C0G6R2C251N#U,B0402C0G4R7A250N#B,B0402X5R102K101N#B,B0603X5R106K100N#K,B0603C0G122G160N#D,B0201X5R183J100N#A,B0201C0G7R0C250N#A,P0603C0G2R2A251N#U,B0201X7R471K160N#A,P0805X8G3R0A251N#E,P0402C0G330F201N#B,P0805X8G5R0B251N#E,B0603X5R152J101N#D,B0603X5R561J201N#D,B0201C0G5R0B250N#A,B1206X5R222J101N#O,B0402C0G2R0C500N#B,B0105C0G8R0C160N#Z,B0105X5R331M100N#Z,P0805X8G7R0C251N#E,B0201X7R562J250N#A,B0402X5R474M250N#B,P0805C0G6R8B251N#E,B0603X5R822K101N#D,B0105X5R391M100N#Z,B0201X7R221K250N#A,B0105X5R272J100N#Z,B0105X5R472K100N#Z,B0105C0G0R4A250N#Z,B0105X7R121J160N#Z,B0402X5R474M250N#N,B0105C0G2R4B250N#Z,B0105X5R103M100N#Z,B0402X5R563K500N#C,B0805X5R223K101N#H,P0402C0G2R0A201N#B,B0105C0G200G160N#Z,B0402X5R334K100N#N,P0402C0G4R0B201N#B,B0402X7R181M500N#B,B0805X5R392M101N#Y,B0402C0G1R5A250N#B,B0402X5R334K100N#B,P0402C0G0R5A201N#B,B0805X5R431J501N#Y,P0603C0G3R0C251N#U,B0105C0G0R9B250N#Z,B0201X7R121M500N#A,P0402X8G0R4A201N#B,B0105C0G4R0A160N#Z,B0402C0G1R2A500N#B,B0201X7R102M250N#A,B0402X5R271M101N#B,B0603X5R511K201N#D,B0402C0G100G250N#B,P0603C0G1R0B251N#U,B1206X5R473J501N#L,B0805X5R392M101N#H,B0201C0GR68B250N#A,B0402C0G7R5D250N#B,P0402X8G2R4B201N#B,B0201C0G8R0A500N#A,B0201X5R183M160N#A,B0402C0G680F250N#B,B0603X5R911M201N#D,B0201C0G1R6C500N#A,B1206C0G333J250N#L,B0805X5R391J631N#Y,B0201C0G8R2B250N#A,B0603X5R222M101N#D,B0201X7R471K250N#A,B0105C0G151J160N#Z,B1206X5R471K101N#O,P0805X8G2R0C501N#E,B0402C0G7R0C250N#B,B0603X5R821J251N#D,P0201X8G6R8A201N#A,P0201X8G0R4A201N#A,B0201C0G100G250N#A,B0603X5R476M4R0N#K,B0402X5R152J101N#B,P0805X8G7R5D251N#E,B0402C0G3R0A250N#B,B0402C0G241J250N#B,P0402C0G2R2A251N#B,B0603X5R271K251N#D,B0805X5R272K101N#Y,B0805X5R683M101N#H,B0805X5R104M101N#Y,B0201X7R222J160N#A,B0402C0G471K500N#B,B1206X5R106K250N#L,B0402C0G182G250N#B,B0105X5R152M100N#Z,B0805X5R102K201N#Y,B0105X5R153J6R3N#Z,B0603C0G182G160N#D,B0201C0G1R5A250N#A,B0805X5R272K101N#H,P0402C0G6R2C251N#B,B0201C0G270K500N#A,P0603X8G0R6A251N#U,B1206X5R102M101N#O,P0402X8G3R6A201N#B,B0105X5R201M6R3N#Z,B0805X5R683M101N#Y,B1206X5R272K102N#O,B0201C0G241J250N#A,B0805X5R161K501N#Y,B0805X5R473K101N#H,B0805X5R222J251N#Y,B0402X7R273K500N#B,B0402C0G0R3B250N#B,B0201C0G4R7A250N#A,B0105C0G330J250N#Z,B0105X5R272M6R3N#Z,B0805X5R473K101N#Y,B0402X7R472J6R3N#B,B0201X5R333J6R3N#A,B0603X5R271M101N#D,B0105C0G101K250N#Z,B0805X5R561M501N#Y,P系列,B0105C0G0R4A160N#Z,P0603C0G2R7B251N#U,P0402C0G0R6B251N#B,B0105C0G1R2C160N#Z,B0105X5R103K6R3N#Z,B0201X7R331J500N#A,B0402C0G620F250N#B,B0402X5R222M101N#B,B0201X7R681M250N#A,B0603C0G152G500N#D,P0805C0G680G251N#E,B0603X5R102K101N#D,B0805X5R181M631N#Y,B0105X5R201J100N#Z,P0805X8GR68B251N#E,P0402X8G6R8A201N#B,B0805X5R331J631N#Y,P0402C0G3R0C251N#B,P0805X8G8R0A501N#E,B0603C0G222J500N#D,B0805X5R475K250N#H,B0201C0G471K500N#A,B0402X5R474M6R3N#B,B0603X5R331J101N#D,P0805X8G0R3B251N#E,B0201C0G6R8D500N#A,P0805X8G200J501N#E,B0805X5R681J501N#Y,B0105C0G1R3B160N#Z,B0402X5R102J500N#B,B0402C0G152G500N#B,B1210X5R226M160N#L,B0805X5R475K250N#Y,B0105X5R392J6R3N#Z,P0603X8G0R5B251N#U,B0105C0G200G250N#Z,P0402C0G4R7C251N#B,P0805C0G470J251N#E,B1210X5R226M160N#R,B0805X5R392K251N#Y,P0603C0G1R5C251N#U,B1210X5R226M160N#Q,B0402C0G240K250N#B,B0805C0G822G500N#K,P0201C0G1R3C201N#A,B0402X5R224M250N#B,B0201C0G680F250N#A,B0402C0G8R2B250N#B,B0402C0G620K250N#B,P0805X8G9R1C251N#E,P0402C0G2R7B251N#B,P0402X8G5R1A201N#B,B0402X7R272K100N#B,B0402X5R393J250N#B,P0805C0G100C251N#E,B0201C0G0R8A500N#A,P0402C0G2R4C201N#B,P0402X8G330J201N#B,B0402C0G180F500N#B,P0805C0G2R7A251N#E,P0201X8G4R0A201N#A,B0402X5R224M250N#N,B0402X5R201K500N#B,P0805C0G4R7B251N#E,P0402X8G0R9B201N#B,B0201C0G150F250N#A,B0201C0G820G250N#A,B0805X5R121M631N#Y,B0402X5R474M160N#B,B0603X7R474K500N#D,B0105X7R181J160N#Z,B0201C0G220G500N#A,B0402C0G680K250N#B,B0805X5R104M101N#H,B0201C0G620F250N#A,P0805C0G5R6C251N#E,B1206X5R152M631N#O,P0603C0G0R6B251N#U,B0201X7R151M160N#A,B0105C0G3R6A160N#Z,B0105C0G101K160N#Z,B0402C0G200J500N#B,B1206X5R226M160N#L,B1206X5R472J101N#O,B0105X5R152K6R3N#Z,B0805X5R751M501N#Y,B1206X5R221K101N#O,B0402X7R222J250N#B,B0105C0G3R6A250N#Z,B0201C0G301J500N#A,B0805X5R911J101N#Y,B0402C0G6R2A250N#B,B0402C0G270K500N#B,B0402C0G222J500N#B,B0402X5R474M160N#N,B0201C0G470G500N#A,B0105C0G5R6B160N#Z,B0201X7R751K160N#A,P0402C0G3R9A251N#B,B0105X7R820K100N#Z,P0805C0G101G251N#E,P0603C0G7R5A251N#U,P0603X8G330G251N#U,P0201X8G0R3B201N#A,B0201C0G270F500N#A,B0201X7R562J160N#A,B0805X5R101K501N#Y,P0201C0G0R4B201N#A,B0201C0G1R1B500N#A,车载,工业

2022/1/22 - 选型指南代理服务技术支持采购服务

解析电子工业联盟（EIA）标准下的MLCC（多层陶瓷电容器）的尺寸沿革及发展趋势

EIA行业标准可视为技术领域的基础设施，其影响遍及整个电子行业。本文楼氏电容Knowles为您解析电子工业联盟（EIA）标准下的MLCC尺寸沿革及未来发展趋势。

2022-03-15 - 行业资讯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

【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

搭载FlexiCap™柔性端头的AEC-Q200认证MLCC：可保证具备5毫米的弯曲承受度

Knowles楼氏电容事业部凭借其引入市场的创新性获奖技术——FlexiCap™（柔性端头），持续领跑于灵活端接技术领域。FlexiCap™柔性端头独特的聚合物端接及其精细的纤维结构设计，有效地将直接作用于电容器陶瓷部分的机械应力降低了约50%，显著增强了其耐用性。

2024-09-14 - 产品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

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