SLCs vs. MLCCs: Which Capacitor Type is Right for My Application?

时间： 2022-02-24 来源：Knowles

技术问答

选型帮助

研发客服

商务客服

Insights Into Precision Passive Devices

KNOWLES Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of Compex, DLI, Johanson MFG, Novacap, Syfer and Voltronics, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

Capacitors are essential passive components for designing any electrical circuit. But there are so many options to choose from with a wide range of specifications that it can be overwhelming to determine what capacitor may be the best fit for your application. One early decision that circuit designers must make is to determine if a single-layer capacitor (SLC) or multi-layer ceramic capacitor (MLCC) is the right fit for their application needs.

At a high-level, these capacitor types seem similar as both SLCs and MLCCs can be used for charging and storing, filtering, or bypass functions in a circuit. To determine which one is the best fit for your application, let’s first look at the basic structure of each capacitor type. SLCs are the most basic capacitor type available since these capacitors consist of a single layer of dielectric material, or insulating layer, sandwiched between a positive and a negative electrode.

An MLCC uses the basic principle of this capacitor design to build multiple layers in the same capacitor, resulting in a single capacitor that provides a capacitance level that is equivalent to using multiple SLCs connected in parallel. This multi-layer design in slightly thicker (taller) than an SLC but decreases the overall footprint needed for a capacitor to achieve higher capacitance – a critical concern for many RF and microwave applications today as size, weight, and power (SWaP) are driving many design decisions. Figure 1 illustrates the construction of an SLC versus an MLCC.

Figure 1. The illustration on the left shows how an SLC is built while the illustration on the right shows the many layers of an MLCC.

When an SLC May Be the Best Fit

SLC’s are specifically designed for use in microwave and RF applications. This is because the inherent self-resonant frequency (SRF), which is the point where the capacitor will exhibit the least amount of impedance, of an SLC is the highest of any discrete lumped constant capacitor. Capacitors with a high SRF have low equivalent series resistance (ESR), which is the internal resistance in the capacitor that appears in series with the capacitance of the device.

This is important because, in general, ESR increases as frequency increases, so using a capacitor that has inherently low ESR is necessary. Additionally, since SLCs are formed monolithically, the number of mechanical parts in the SLC is limited, which also contributes to a lower ESR value.

One potential drawback of SLCs is that since it is just a single layer of material, capacitance is heavily dependent on the dielectric constant of the dielectric used, which limits the capacitance that can be achieved. Therefore, SLCs are mainly ideal for high-frequency, low-capacitance applications. We are the leader in supplying the LC filter market with custom value parallel plate capacitors.

When an MLCC May Be the Best Fit

In general, MLCC’s can be used in a variety of applications since these capacitors have a much higher capacitance range than that of SLCs. This is possible because MLCCs are made with multiple layers of dielectric and conductors. In addition to offering higher capacitance, this design means MLCCs can be used for much higher voltage applications, up to 12 kV for some of our designs. However, since multiple layers of electrodes and dielectric are used, the ESR of an MLCC is usually much higher than that of an SLC. As a result, MLCC’s, even those made with high Q (ultra-low loss) Class 1 dielectrics, can only handle frequencies up to 30 GHz because of the high ESR values relative to SLCs, while SLCs can handle frequencies up to 100 GHz.

When it comes to RF and microwave applications, MLCCs are ideal for applications that require higher capacitance levels and higher operating voltages. However, when looking at applications beyond the RF and microwave industry, MLCCs, especially those taking advantage of a variety of our MLCC innovations, can be used for some of the world’s most demanding applications, including medical implantables, electric vehicles, and high-reliability detonation devices.

As shown in this post, the uses cases for SLCs and MLCCs are not interchangeable since each capacitor type handles variables such as voltage, frequency, and capacitance differently. In general, SLCs are well-suited for high-frequency, low-voltage RF and microwave applications, while MLCCs can be used for all types of high-capacitance, high-voltage applications within a much more limited frequency range.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由海底沉心转载自Knowles，原文标题为:SLCs vs. MLCCs: Which Capacitor Type is Right for My Application?，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。

全部评论（0）

暂无评论

【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。

设计经验发布时间 : 2022-05-10

Knowles Achieves a Benchmark for Excellence: MIL-PRF-55681-Qualified Capacitors for Mission-Critical Defense Applications

Knowles sought MIL-PRF-55681 qualification for ten capacitor styles manufactured and tested in the United States. With this qualification, customers can be assured that they are using robust and dependable ceramic capacitors in their mission-critical systems.

产品发布时间 : 2024-08-17

Selecting Capacitors for Charge Storage in Radar Power Amplifiers

To support the transition to fully digital arrays, power amplifier modules must be designed to fit in smaller and smaller spaces. From functions like signal conditioning to noise reduction, capacitors support many critical functions in power amplification within radar systems, and the challenge is to get the capacitance required for charge storage within the space allotted.

技术探讨发布时间 : 2024-08-03

Knowles（楼氏电子）单层电容器（SLC）选型指南

目录- Precision Devices Introduction Simplified Frequency & Product Application Chart SINGLE LAYER CAPACITORS DLI SINGLE LAYER CAPACITORS COMPEX SUBSTRATES & HEATSINKS DLI BROADBAND DEVICES DLI RF COMPONENTS DLI

型号- V30BZ102M6S,P42BNL820MA03152,CSB SERIES,F15NR0R1M1PX3,D10CFOR1A5PX,CSA SERIES,V30BZ222M8SX,P62BNL820MA02636,AEQ3042,C-BN,C06BL851X-1UN-X0T,P42NR2R0K5S,AEQ2199,AEQ2234,V30BZ103M1SX,C-28,C-BE,C-BD,P62CG1R0C5S,C-20,P21BNL300MA03976,BAR CAP®,P42CG1R5C5S,V30BZ472M1SX,S20AG250DZNX,F20CG0R1M1PX3,C-140,GAP CAP®,AEQ3055,C-37,CR6-BN-105X25X4-5-G-101-Z,C-35,C-30,P21BNL300MA04678,C08BL242X-5UN-X0T,J30XXBA012LX4,C18BL103X-4UN-X0T,J30BJBA022LX2,F15CGR08M5PX3,AEQ2050,V30BZ472M1S,P62CD0R7B5S,B28BJBFN01,CSM-BE-10X10-X5-G-2R9-M,J30BLBA032LX1,AEQ05510,C06BL,DR03F36Q1550AYB,P42BNL820M5S,B20BLSBN01,V30BZ102M6SX,C-40,SBT-28-20X20X6-G-S5,CR SERIES,T30BV30X45PX,C-120,J30BJBA002LX3,BINARY CAP®,CSM SERIES,AEQ05470,AEQ06042,AEQ05471,F35CG0R4M1PX3,CSB-100-50X20X7-10-G-120-M,AEQ05472,C-400,MST,C-58,AEQ05467,AEQ05468,C-55,AEQ05469,C-50,J30BLBA012LX4,V SERIES,E40BU151Z1PX4,PX42UX104KCSX,BORDER CAP®,DI-CAP®,P62NV100M5S,F25NR0R4M1PX3,C-NR,P62BNL820M5S,V30BZ102M5SX,CSA-200-10X10X6-G-101-M,OPTI-CAP®,C-100,MILLI-CAP®,D10BJ100K1EX,PX SERIES,F35CF0R1M1PX3,PX42UX104KCZX,BINARY-CAP®,MST-30-25X20X6-G-S5,V30BZ682M1S,AEQ05246,C18BL,F25CG0R2M1PX3,SBT SERIES,V30BZ682M1SX,V80BZ104M5SX,BI-CAP®,V30BZ103M1S,P62CF0R5B5S,C04BL121X-5UN-X0T,F25CFR08M5PX3,J30BJBA032LX1,V80BZ104M5S,F20NR0R2M1PX3,J30BLBA022LX2,AMPLIFIER BYPASS SAMPLE KIT,P21BNL300M5S,CSA,MST SERIES,C08BL,CSB,P21BNL300MA04282,J30XXBA002LX3,C04BL,CSM,CM SERIES,C-80,BAR-CAP®,SBT,T-CAP®,G10BU100K5PX05,F40NR0R5M1PX4,J30BLBA002LX3,C-200,P42BNL820MA04679,ENG DESIGN KIT SLC,V30BZ222M8S,H20CG250DZNX,C08BL102X-1UN-X0T,B20BHSBN01,B28BHBFN01,B28BTBFN01,J30BJBA012LX4,P21BNL300MA04733

选型指南 - KNOWLES - R/7.2 - 2023/8/19 PDF 英文下载

Knowles（楼氏电子）多层&单层陶瓷电容器和薄膜器件选型指南

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

型号- 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

选型指南 - KNOWLES - 2017/5/10 PDF 英文下载

Knowles Provides a High-Precision and High-Reliability Machined and Plated Solutions for Passive Electronic Components

Knowles Precision Devices has a long history in radio frequency (RF) and custom discrete passive components. Knowles‘ rich heritage in variable and trimmer capacitors comes from Voltronics and Johanson and Knowles‘ expertise in High-Q multi-layer ceramic capacitors (MLCCs) is supported by DLI and Syfer.

原厂动态发布时间 : 2024-04-13

Knowles（楼氏电子）射频/微波产品选型指南

目录- Knowles Technology and Custom Design Overview DLI Brand Devices and Available Product Listing Technical Notes and Custom Configurations

型号- FPC06302,H100XHXS,PDW08607,PDW08605,PDW08606,B076MB6S,L288XC3S,PDW07630,PDW08604,B148LA2S,B280LB0S,B280MD1S,FPC07643,L220XH5S,B056MB5S,B099NC4S,B191KA1S,B080MB5S,B061MB6S,PDW07069,B033ND5S,B168MB1S,DEB-B274MB1S,DEB-B385MDOS,B083LB6S,L204XF4S,PDR05848,B119LB1S,B065NC5S,B210LA0S,J30BLBA032LX1,B084MC6S,B20BLSBN01,N016MD9S,B012MD5S,J30BJBA002LX3,B052NC5S,C079KB1S,PDR06120,L157XG3S,B148QF0S,H140XHXS,FPC10207,B350NB2S,B105MB5S,B114MB1S,PDW06984,PDR06390,B056RC4S,C142KB0S,PDW09692,B047MC5S,B094LA2S,FPC06630,FPC06078,B032ND5S,B102MC1S,B285LB2S,FPC06077,FPC06076,PDW07948,B119MB1S,B115NB4S,B111NC4S,B230LA0S,L254XF3S,PDR06380,FPC06075,FPC06074,FPC06073,B042OD4S,B142LA2S,B060NC5S,B145LB1S,B380KA1S,B274MB1S,FPC06882,B032OD5S,FPC06881,J30BJBA032LX1,B180MA1S,PDW06407,PDW06089,PDW06400,PDW06401,B192NB2S,J30XXBA002LX3,H120XHXS,B100RH2W,B220LA0S,B280LA0S,B280MC1S,N012ME9S,B118LB4S,B291MB0S,B070MB6S,B121MB4S,B040RG9S,B070NC5S,B393KD0S,J30BLBA002LX3,B095MB1S,AFL09387,B057MC5S,B20BHSBN01,FPC07183,FPC07182,FPC07181,B120MB1S,FPC07180,B021MC8S,FPC06149,L128XH4S,FPC07234,B024RF2S,B100MC5S,FPC06701,FPC06700,DEB-B259MC1S,PDW08324,PDW08323,B031ND5S,B207LA0S,H080XHXS,B116NC5S,H168XHXS,B100MH0W,FPC06154,FPC06153,PDW06933,FPC07803,FPC07802,L065XG9W,L065XG9S,B138LA2S,B138MB1S,B190MB1S,FPC06152,FPC06151,B055NC5S,FPC06150,B200LA0S,PDW06011,J30XXBA012LX4,J30BJBA022LX2,B058MD7S,FPC06164,B28BJBFN01,PDW05758,B089NC4S,B028RF2S,B260MB2S,FPC06719,B150OG0S,PDW06041,B385MD0S,B062MC55,L050XF9S,B149MC1S,B289KA0S,PDW06398,PDW06399,PDW06038,B381KD0S,J30BLBA012LX4,B040MB5S,B112MB1S,B240LA0S,FPC09291,B259MC1S,H160XHXS,B161LA0S,B038MC9S,B081RC0S,B250LA0S,B280MF1S,L185XF4S,B096QC2S,FPC06913,B305LA0S,B424MB1S,L157XF3W,B120RF0W,L060XD9S,L095XG9S,B479KB0S,L185XF4W,B120RF0S,B039NC5S,FPC07337,ADP09388,B160KA1S,B279KB1S,J30BLBA022LX2,H182XHXS,B144MB1S,PDW07691,B038NC4S,L117XH4S,B097MB0S,L117XH4W,B050ND4S,H026XHXW,B016MD6S,B28BHBFN01,B28BTBFN01,B127MB2S,B165LA1S,J30BJBA012LX4,H060XHXS

选型指南 - KNOWLES - 2023/10/16 PDF 英文下载

Knowles（楼氏电子）高可靠性多层陶瓷器件选型指南

目录- Introduction General and Technical Introduction MLCC Ordering Information High Rel ranges and information Broadband Blocking Capacitors Radial Leaded Capacitors SM EMI Filters Capacitor Assemblies Specialty Products

型号- UL SERIES,SBSG,SFJEL0500335MX1,1206J1K00103MXTH20,SBSMP0500474MXT,C04BL121X-5UN-X0T,C18BL103X-4GN-X0T,SBSP,RC3640R124K102PXT,C06BL851X-1UN-X0T,1210Y1000103JDT___,1206Y1000473KNT,SBSM,SF,C17CF620J-7UN-X0T,SFS,XX1206N472J101NX0500HTMHB,1812Y1000334MXTE03,CR1206N562K101NHT-4,4540S125K501NTM,1210Y1000103KXT___,1206G224K250NX050HTM,SBSGP5000473MXT,SBSPP1000153MXT,1206Y1000103MXTE07,C08BL102X-1UN-X0T,1210A1000103JXT___,1206RE331J501NHT,SFSTC5000223MX0,ST3640B474M101LJXW-5R,1210Y1000103KST___,1206W476K6R3NX080T,C08BL242X-5UN-X0T

选型指南 - KNOWLES - v3 - 2019/1/23 PDF 英文下载

CEC / CNC Series CERAMIC CAPACITORS Low and Medium Voltage Chips Capacitors

型号- CNC 8,CNC4-CMF56NF10%50VS8T5,CNC 9,CEC 72,CEC 71,CEC 70,CEC W,CEC X,CNC 4,CNC 5,CNC 6,CEC SERIES,CNC 7,CNC 1,CNC 2,CNC 3,CEC,CEC 1,CEC 2,CEC 3,CNC X,CEC 4,CEC 5,CEC 6,CEC 7,CEC 8,CEC 9,CNC 19,CNC 17,CNC 18,CNC 14,CNC SERIES,CNC 12,CEC 19,CNC,CEC 18,CEC 17,CNC W,CNC 71,CEC 14,CNC 72,CEC 12,CNC 70

数据手册 - EXXELIA - 10/23 PDF 英文下载

Wrapping Up 2021 with Knowles Precision Devices‘President Chris Dugan

Throughout the COVID-19 pandemic, Knowles has stayed focused on our primary goal of helping our customers address their most challenging application needs by providing high-performance components and innovative solutions.

原厂动态发布时间 : 2022-02-23

Exxelia 钽电容器选型指南

描述- Tantalum capacitors are, with ceramic, aluminum and film capacitors, one of the most used family. The manufacturing technology and the constant improvements in tantalum powders allow it to be the capacitor with the highest CV (product capacitance voltage) per volume, very long life and high reliability.

型号- TS42D476M063F,TS79ED857M025A,TS27D686M025A,CT79,CT4E-69FE,TS22D336M040F,AS31,TS79EHD857M025A,CTS27,TS4884403518M010A,TS32D157M016A,CTS23,TS78D857M025A,CTS41ESR,CTS21,ST79 SMD,CTS21 TYPE,CT79 SMD,SPE0844,TS78ESD157M125A,93026,ST79,TS78ED857M025A,CTC42,TS09ED227M040A,CTS41,CT4 TYPES,SPE0844S,CTC3E,CT9RSE,CTS33,CTS32,TS47D127M100A,TS13D157M016A,CTC4 RSE,CTS4 TYPE,CT9E,TS84RE156M050F,CT79E,CTC42E,WS83D109M010HS,MIL 39006/22,CT4E-69F,CTP42D157M050S,DSCC 93026,CTC21 TYPE,CT9 TYPES,M 39006/22-0220H,MIL 39006/25,TS29D396M063F,39006/22,TS4884S03157M150A,93026-48KS,TS09TD227M040A,CTC23,TS22ED336M040F,CTC21,39006/25,ST79 HT200,CTS1M,CTP42,CTS41 RSE,CTS4,CTS1,TS01MD157M016A,CTS13,M39006/22-0220H,M 39006/22,CTC4 ESR,TS79D857M025A,M 39006/25,CT9CR,TS23D567M010A,CTC3 TYPE,SMT47,TS42ED476M063F,CT79E HT200,AS31N507M150A,TS12F476M020A,SMT47D476M063F,TS01D157M016A,TS83D336M016F,TS83EV336M020F,TS79ESD157M125A,CT9E TYPES,TS21ED226M050A,CTS27 TYPE,TS47ED127M100A,TS21D226M050A,CTC4,CTC3,CTC21E,CT4E TYPES,CTP21,CT9 CR,WT83,CTS1 TYPE,CTC21E TYPE,CTS21E,AP41N409M010A,M 39006/25-0220H,TS22EC336K040F,CT9E CR,TS41F476M020A,CT79 HT200,AP31,TS04F476M020A,TS84D336M016F,CT4E,CT4,CTP21D157M040TR,TS09D227M040A,CT9,TS09ETD227M040A,CTS21E TYPE,AP41,CTC21 E,TS83ED336M016F,TS79HD857M025A,TS79ESHD188M025A,TS33D567M010A,CT79E SMD,WS83

选型指南 - EXXELIA - 12/22 PDF 英文下载

Microwave SLCs GP Series – SLC's With Borders Single Sided Recessed Metalization

型号- GP40,GP50,GP20,GP30,GP151A0R5BN6N,GP SERIES,GP35,GP15,GP25

数据手册 - KYOCERA - Rev 0 - 2024/2/7 PDF 英文下载

Microwave SLCs GH/GB Series – SLC's With & Without Borders Maxi & Maxi+ X7R Dielectrics

型号- GB06,GB05,GH02,GH01,GH0158101MA6N,GH0258221MA6N,GH04,GH26,GH0458182MA6N,GH03,GH06,GH05,GH0259751MA6N,GH0258102MA6N,GH0559602MA6N,GH90,GH70,GH0258471MA6N,GH50,GH35,GH0358102MA6N,GH16,GH18,GH0459302MA6N,GH0159331MA6N,GH0359152MA6N,GB02,GH165A6R8MN6N,GB01,GB04,GB03

数据手册 - KYOCERA - Rev 1 - 2024/2/1 PDF 英文下载