WO2002052591A2

WO2002052591A2 - Electric multilayer component and arrangement with this component

Info

Publication number: WO2002052591A2
Application number: PCT/DE2001/004818
Authority: WO
Inventors: Heinz Florian; Melanie HÜTTER; Christian Hesse; Helmut Sommariva
Original assignee: Epcos Ag
Priority date: 2000-12-22
Filing date: 2001-12-20
Publication date: 2002-07-04
Also published as: DE10064445A1; TW548669B; WO2002052591A3

Abstract

The invention relates to an electric multilayer component comprising at least two capacitors (C1, C2), which differ from one another, are connected in parallel, and which each have at least two overlapping electrode layers (1) with a dielectric layer (2) arranged therebetween. According to the invention, the capacitors (C1, C2) are stacked to form a layer stack (3) and are separated from one another by at least one intermediate layer (4) as to provide the component with different resonance frequencies (f1, f2) that are defined by the capacitors (C1, C2) The invention also relates to the arrangement of an inventive component on a printed circuit board (6). A double resonance capacitor having a very small volume can be realized by stacking different capacitors (C1, C2) and separating the capacitors (C1, C2) from one another by an appropriate intermediate layer (4).

Description

description

ELECTRICAL MULTI-LAYER COMPONENT AND ARRANGEMENT WITH THE COMPONENT

Electrical multilayer component and arrangement with the component

The invention relates to an electrical multilayer component with at least two mutually different capacitors connected in parallel, each having at least two overlapping electrode layers with a dielectric layer arranged between them, in which the capacitors are spaced apart from one another in such a way that the component defines different capacitors Has resonance frequencies. The invention further relates to an arrangement with the component.

From the publication WO 98/50927 multilayer components of the type mentioned are known, in which the electrode layers are designed in a U-shape. The electrode layers are alternately aligned opposite one another and arranged one above the other in a multi-layer stack. Legs of the U-shaped electrodes lying one above the other form the partial capacitances of a first, larger capacitance or the partial capacitances of a second, smaller capacitance.

Such multilayer components are used as double resonance capacitors in dual-band mobile telephones to dampen the carrier frequencies of 900 MHz and 1.8 GHz that are coupled in via a data line.

Since, according to the structure described in the above-mentioned document, a dielectric layer, by means of which the electrode layers are separated from one another, belongs to different capacitances and these are thus coupled to one another, the known component has the disadvantage that for spatial separation and thus for realizing two different ones Capacities a large distance between the legs of the

α <! CD N p. tr <s α

P- 0 Ω P- PJ = Φ OJ φ 3 tr φ rt P- P ¹ Ω ω Φ P- Φ d tr 0 = φ P- Ω 3 Di 3 rt P

CD 3 tr φ φ Φ 3 J rt Φ d p. 3 P- P-

I 3 tr p. 3 P ¹ CQ

P- D PJ Φ <tr ~ Φ φ Φ d <! H Φ Φ 3 p> Φ 0 ≤ P, 3 D.

P 'p. for $. 0 = PJ Cd

≤ Φ φ 3 φ rt E ⁾

P- 3 3 P- CD 3 P- Φ p. rt φ φ Ω D CQ? T

D. 3 CQ tr d rt J rt

Location 3 - co p. φ Ό 3 • CQ O

Ό tr D. d tr

Φ φ Φ D P- Φ Φ

P- p. 3 Φ 3? 3

3 rt φ p. PJ

D Φ P- Cd co 3 3 d 3 rt <0 3 O

3 N P rt rt

CQ ^ d P- φ Ω Φ ≤ O J CD 3 tr Φ

CQ • 0 rt D o Φ <3 φ J Φ d Ω CQ P- α

3 IM 3 tr φ p- t

P> = P- I - ¹ CQ P- CQ CQ 7Ö rt φ Ω P. CD

PJ = 3 P- tr 0 Ω P-

D. rt - »o rt tΛ tr co d Φ rt tr φ P- rt ii 3 tr J CD Ω •

Ω φ Φ d tr tr <! P-CD Φ <rt O

Φ o r J

Φ D. Di Φ P ¹ J p.

P- ^ Φ PJ 3 d d PJ

3 P- 3 tr φ 3 Φ d

3 Φ 3 Φ CD

Φ CQ D. p. rt 3 Φ

Φ Φ - Φ 3 P. φ p. p> P- Φ φ rt Φ P- CD 3 ω rt> P- 3 rt rt d p. P- tr 3

P- co co S P- Φ rt

CD rt rt <0 3 P- P-

Ω. ⁾ P- tr CD 3 Φ tr 3 φ P- tr p.

Φ φ CQ rt co CQ p

D d 0 O

<Φ 3 3 Λ Φ

P- p. ? r D. Φ p. φ Q φ CD

Φ p.

φ

Component, for example the circuit board on which the component can be soldered or solder joints etc. determined.

The multilayer component according to the invention has the advantage that the different capacitances no longer have a common dielectric layer. This is achieved by stacking the individual capacities on top of one another. The required spatial spacing of the capacitors can easily be achieved by a simple measure, namely by inserting an appropriately dimensioned intermediate layer. Because of the different levels in which the capacitances are arranged, a relatively small distance is sufficient to decouple the capacitances, as a result of which the volume of the multilayer component is reduced.

A large number of different ceramic materials come into consideration for use as a dielectric layer in the component according to the invention. In particular, ceramic materials for capacitor applications, for example the ceramics known under the names "COG", "X7R" etc., can be used for the component. But varistor materials are also possible.

Depending on the intended application of the component, different ceramic materials can be used for different dielectric layers.

When using different materials for the dielectric layers, the production of the component comes through

Joint sintering, also known to the person skilled in the art under the term "cofiring", or by gluing the layers together.

The use of the various known capacitor materials enables the inputs to be

N co D. CD Φ P- CD α o co D. Cd CQ X φ CD 3 d σ D CD co D. <Hl 3 D. Cd Cd CQ

Ω s: Ω d 0 P- 3 Ω SD P- Ω d φ Φ 0 P- rt Φ 3 Φ 0 Φ PJ = Ω d φ for P- P- Φ Φ rt tr P- tr P 1— '3 tr P 3 tr 3 CD 3 3 3 Φ P D. CD 3 3 3 tr PPP Φ P- P Φ

P- CD P- Ω Ω Φ ^ P- J Di P- CQ 0 Hl Hi ≤ rt rt Φ Ω N 3 Φ

Ω Ω Ω tr tr P 0 Ω d Ω 3 ^■ £. Φ J 0 Φ P d tr P- NJ ö CQ P- p ^j tr tr tr Hi Φ P tr CQ tr 3 P- X Ω rt α P- P- 0 PJ P- Ω s: rt P- Φ Ω d rt Φ rt d = Φ 3 rt et P- φ P rt tr Φ Φ rt 3 Ω Q co tr P- Φ φ Φ tr d

D. 3 ¹ tα P- Φ P Φ rt P Di P- Φ CD P Φ P ¹ 3 tr P P- rt CQ P P- Φ CQ

P- CD P- p. Φ 3 Φ 3 Φ 3 CD 0 P P- α P P- • Φ for d Φ Ω P- Φ CQ •

Ω Ω Ω tr P N P- ω D 3 Φ 3 3 P- Φ Φ d rt rt tr PJ tr d Di t tr tr J ω P- 3 d d PJ Φ <! P- 3 D. Φ φ 3 P α co Hi Φ - Φ rt Φ Φ

Φ P- Φ P rt CQ φ 3 d 3 0 Φ tr φ J Ω 0 P d P rt P

Ω 3. φ φ P D- rt CD P P t P Φ P- d D. tr 3 ≤ co tr P- Φ

CD tr 3 P- 0 rt tr Φ Cd Φ tr CD D. d P- P- 0 Ω Φ? R d JÖ

P- rt D. • n o α Φ Φ tr Φ PJ P P- P rt rt Φ P Ω Φ Φ D tr CD d Φ

3 Φ Φ for d CO Ω P- H P- Φ P- P CO 3 Φ P Ω tr 3 P- d P rt 3> CD

D 3 p P 3 Ω tr φ rt 3 3 1— 'Φ rt 3 P- Φ TJ tr rt d P Ω Φ CD Ό o

CQ tr P- tr 3 Φ CD tr CD P Φ tr Φ Ω tr tr Ω Ό d ö D. P- Ω Φ P- d CQ PJ 0 O d 0 P- 3 Φ CQ tr rt Φ tr PJ co D P- PJ P- Ω tr tr 3 3 Φ Hl co Ω 3 <! N CQ P- Φ d P- P- 3

0 P- Φ CD CD tr rt rt CD Di 3 rt Ω d Ω tr CD 0 Φ rt Di CΛ Φ 3 • Ω tr N

3 Φ rt er _^ P CQ J tr 3 tr P- Ω 3 C> Φ φ rt P- tr J Hi

P- Φ ω P- Φ Di 3 P- P- CQ Φ Ω tr Hi Φ CQ P- PJ 3 tr α rt rt P rt CQ tT ⁾ tr P- tr tr o Φ 3 CD Ω _" • D tr P- < d = P- 3 O Φ PJ Φ P- φ

PJ rt d Φ Ω Φ d J 3 rt rt tr rt Ω O 3 "3 Cd tr Φ CQ N 3 o Λ tr 3 P Φ CD tr P- 3 3 co Φ rt D Cd Φ tr PP Φ PJ φ P ¹ 0 P- d 3 d

0 = N P- o Φ CD CD rt φ d Φ α PJ J 3 rt rt d d P- CQ Φ P Di Φ Φ

3 N? Φ 3 O Ω P- ¹ P- P- d Φ Φ 3 tr Φ rt Ω tr Ω Φ 3 3

3 PJ d 3 D. tr P- tr Φ tr Cd 3 Ω <! Φ D. d P- CQ φ <tr d tr CD N

Φ tr 3 Φ Φ Φ φ P- P- Φ PJ tr 0 Φ P- ¹ ω Φ P- 0 Φ d tr Φ *>

3 co 3 P P P "Ω 3 3 d CQ Φ 3 Φ P Di - 3 0 3 Ω 3 co LQ Ξ öd 0 = d

P- Ω rt CD Q CD tr φ 0 3 CD Φ o = 3 φ tr CD P- J 3 tr LQ tr Φ €, rt ω t ^ 1— 'tr Φ φ φ CD ≤ CQ α 3 Φ for Cd ≤ P d 3 D. φ Φ P- Φ co Φ Φ PJ Φ φ Ω Φ P- 3 Φ Φ rt 3 tr PJ φ Di Φ Φ Φ

P- Ω P Φ rt P- 3 d P 3 tr P- 3 rt tr Cd 3 P- P CQ Φ d P- d CD

CD <tr LQ P- φ co Φ PJ φ Φ Φ φ PJ 3 Ω CD co P φ CD PJ Φ

Ό P- rt Φ Ω φ PJ 1— '3 3 Q D P tr 3 d tr CQ P- Φ Φ d 3 Di tü

P- Φ Φ tr tr 1— 'd Φ P- rt φ PJ Φ Di • Φ Φ 3 P- φ Hi φ P- J

Φ 3 Φ et rt φ CQ 3 - to P Φ rt O h- ^■ P- P- rt 3 3 α d φ d

Hi 3 P- Φ 3 J P- Ω Φ φ d rt Φ PJ φ P- Φ rt Φ

CD PJ tr d s: d Φ 3 PJ σ d ffi 3 D tr 3 Hi Φ P d d Φ P- CQ N

£ Ω Φ o 3 Φ φ P- rt rt Φ Φ φ N Φ P- Φ N PJ d tr D rt P- ¹ d € φ

Φ 3 "N P- P P 3 - Φ P- P P- 3 Ω 3 ≤ Ω φ Φ φ Φ J P- 3

P- φ P- Ω D. Φ P Φ CD CQ tr rt P- tr D P tr X d CD Φ

CQ φ tr d Φ Ω 3 P- 3 rt Φ <et Q CD Φ tr P- Φ rt S CQ Ω d

Φ φ tr 3 3 P Φ PJ Φ φ Φ d 0 D. Ω Φ 3 P- CD P J tr rt

P- d D tr for CD 3 3 P P- J tr d P LQ φ 0 P- rt Di Φ co

CQ 3 3 PJ 0 tr 3 Φ CD rt rt Ω d φ d Q d CQ d f Φ Φ d

P Φ Q 3 PJ Hl P Φ tr co d Φ tr CQ 3 Φ 3 Φ D. d ^ 3 CQ fr o = P CD d Ό 3 O PJ 3 Φ PJ = P- 3 Φ P- Φ ω ω CQ 3 φ 3 P- CQ Ω tr tΛ ≤ PI— ¹ 3 P- ¹ 3 P 3 3 CQ P- I— ¹ 1_1. Ω rt Φ D. P o J Φ tr φ

Φ IT Φ Ω P- • P- P- ISI CQ rt Ω tr Φ tr Φ φ 3 Φ CQ Ω P- P

P P- tr N φ tr φ H- ¹ <J tr Φ φ ≤ P- P- d tr <! tr Ω

Φ Φ CD P- Cd - 3 P- CQ P- Φ d rt P- P Φ Ω Ω P- P- φ tr ≤

P- Φ Φ P- PJ co rt Ω P CD 3 cQ P- tr tr rt D. X Φ Ω φ d rt φ ti P 3 3 rt Ω Φ tr <! Φ Φ rt rt r σ CQ P- Φ P- tr Φ P-

CD rt Φ d Φ tr Φ P- φ 0 P 1 CQ Φ ≤ Φ P Ω rt Hi

P- P Φ 3 CQ π d rt

1 rt Φ P d N Φ J tr Φ PJ Φ Φ

Φ p P- 3 rt 1 PJ 1 Φ d P Hi 3 rt d P d

3 PJ 1 3 P- 1 for P- rt PJ d

1 1 P 1 1 D.

levels of the electrode layers can be realized by superimposing several ceramic green foils.

Furthermore, a component is particularly advantageous in which the outer contour of at least one electrode layer has at least one lateral incision. Such a component makes it possible to increase the inductance within the component. In particular, the inductance increases with the number of cuts if these are made alternately from opposite sides from the edge into the interior of the electrode layer and thus form a meandering structure of the electrode layer.

An increased inductance of the component has the advantage that the LC constants that are important for the resonance frequencies of the component no longer depend so strongly on the external conditions, for example on the shape of the leads of the component on a printed circuit board. Thus, the electrical property of the component can be largely determined by the design and is only slightly influenced by the external factors, such as supply lines, etc.

Furthermore, the number and size of the incisions of the electrode layers, in addition to the spacing of the electrode layers from one another and the overlap of those forming a capacitance

Electrode layers a further degree of freedom for the freely selectable design of the desired capacity.

Furthermore, a marking which is suitable for distinguishing the top side of the layer stack from its underside can be attached to the outside of the component in a particularly advantageous manner. Such a marking has the advantage that it allows the component according to the invention to be attached to a printed circuit board in a very specific orientation. In this case, an orientation is preferably chosen in which the smaller of the capacitances is closer to the printed circuit board than the larger of the capacitances, since it is shown

co rt CD Di in O φ σ rt P- CD CD D. O tr $, ö LQ r ¹ D. tr ¹ α Φ rt rt tr «rt 3 α er D. er

Ό P Φ JJ Ω J Φ CQ l- ¹ Ω Φ JJ Φ Φ Φ H φ J Φ PJ = PJ = PJ: φ Φ φ Φ PJ: φ PJ

PJ 0 3 ω d tr φ co P rt CD tr CQ Di CD 3 CD 0 = P- tΛ P- 3 Φ rt rt P- P 3 d P rt

3 3 rt Φ PJ 3 P- ^ d tr d rt P- ≤ CΛ rt rt TJ rt J> φ LQ ^ d P- Cd φ 3 PJ S rt 0 = Φ P Φ LQ Φ Φ Φ Φ Φ Hl rt 3 Φ 3 d Φ od CQ P- PJ Φ rt 3 P- P "tr PJ N 3 P Ω er CD P- PP P- P d P Cd PJ = PJ 0 rt 3 P D.

3 Ω Ω d 3 d rt rt Φ o rt Hi 3 Hi er rt rt rt Φ * Ö 3 ^• od P- P- tr Ό rt P CQ P- PJ

CQ tr tr Φ Φ d 3 3 Φ d Φ P- - Φ Φ 1— ^■ Φ I— ¹ LQ CD d φ I— ■ rt Di O φ tΛ

Φ φ Φ - ~ d LQ tT Φ 3 P d d d s: d P PJ J CQ Ω Φ P PJ Φ 3 P 3

3 3 Φ rt PJ P- Φ rt P- tr P- D. CD Φ PJ rt> rt Φ tr rt _^ d Φ rt D. co 3 LQ d 3 P- PJ rt α d P Φ d Ό rt d rt P - Φ D PJ rt d Ω P- P-

CQ Ω J φ er φ d Φ 3 tr P- o d D. CD Φ J Φ 0 Φ LQ d 0 d Φ tr CQ er Φ Φ

Φ tr dd 0 CD p Φ Φ 0 T3 LQ CD P- P- NP Φ P ¹ Φ Φ P

CQ PJ rt Ω Ω * Ö P- d ^• σ O Φ Φ 3 CQ P- LQ D. PJ d Cd Ω D. J P- Di dd Φ

Ω 1— 'D- er er PJ α = N co D. Φ IQ CD d Φ rt rt d = d tr co P- tr Φ 3 Φ Di d tr rt Φ d 0 JP tr d • Ö Φ P Φ PJ = dd er Ω LQ Φ P LQ CD LQ Φ fr d P P- er PJ Φ O P- CQ φ P 3 3 M α Φ rt CD d PJ = er φ Φ φ P- tr rt 3 φ 3 rt P φ CQ PJ Φ p ⁾ = 0 = CD Φ P- rt LQ 3 PJ df 0 P Φ co D. rt

N IQ co P- Φ o tr Φ CD CΛ CQ 0 P dd P- LQ Hl CD 3 Φ PP rt Φ P rt Ό Φ LQ rt φ J PJ CD d P- 0 Φ PJ = CQ 3 P- rt Ω 0 P - D. Di Hi CQ P-

• <PJ P J CD ≤ CO 3 P- J α Cd er Φ P- LQ φ tr P rt 3 P- P- φ co

0 3 0 ≤ 3 P- Φ P- PJ CO Ω rt P- P Φ P rt 3 PJ Di Φ Φ Φ d P- d Ω

P 3 tr Cd Φ N 3 Φ P- CD Φ 3 PJ er P- φ d P CD - Hi 3 P rt D. d PJ tr d 3 Φ P dd P CD 0 PN d - »0 Φ P- Di P- rt d Ό co dd φ ω d P- P- D d rt Φ rt X Φ d Φ PJ CD Φ d <! Φ 3 CD Ω d ≤ Φ d

Φ LQ LQ Φ Φ LQ Φ J 0 Φ CQ X Φ d rt P i 0 3 LQ PJ P- tr CQ φ D CD> d P- CQ PJ rt s: d φ P- $. rt 3 ~ • d rt 3 P- CD P- Φ Cd

Ω KQ ddd CQ <t— 'P- Φ Di 3 3 P- P φ D. Di P- rt Ω LQ rt 3 P- - dd Hi Φ Ω J CD OP Φ Φ Φ D. P- d φ JI— ¹ α D Φ CD Φ tr Φ Φ φ LQ

PJ = φ D rt Cd P tr P d d 3 Φ tr rt P φ J Φ CD rt d rt 3 P 3 Φ CTi

D P "P Φ d P- s: CD Φ CD rt Ξ P d CQ P- tr 3 3 Φ PJ = φ rt 3

P- D Φ P- N rt CQ P- 3 PJ Φ CQ 3 tr tr ¹ d Φ Cd tr P- D. d L) P CQ CQ

CQ Φ P- rt d N rt Ω P-. rt N P- rt CD Φ φ Di φ P-> PJ Φ Φ Φ Ω d Φ Φ tr Hl O er α 0 d rt J Ω co P- φ P tr d CD IQ tr D. d Ω PJ tr

3 J d CD d P rt Φ P Φ 3 er 0 rt P φ er D Φ 0 rt Φ Φ Φ d PJ

LQ tr α = φ Ω d X P- P Φ P- P P- d Φ d J rt 3 P- CD Cd LQ Hl Hl

Φ • tr Φ P- tr tr Φ LQ CD dd Φ Ω Di P d rt PJ φ PJ J Φ rt d Φ P- d fr rt P Φ rt rt CD r Φ ^• υ 3 ϊ d 3 Φ α td d 3 Φ Φ α P d φ rt P- PJ PJ 3 Φ Φ O rt P LQ PJ CD D. Φ P CD Φ PJ Φ CD P- d JJ CD Φ d N 0 3 d P- LQ h- 'J φ CQ PJ φ Ό P- d CQ P d 1— 'rt dd Di Ό P Φ 3 P- D rt P Φ 3 d rt tr PJ Ω D. rt Di Φ φ P ⁾ Φ

Hi d J co 3 x PJ P- 3 <rt Φ tsi er Φ co <! P- D. 3 3 P Φ

P d C = Ό D. J CD co = Φ rt d PJ 0 Φ r P- P o φ P- φ φ D CQ

Ω Ω d tr J Φ d P- CD * Ü tr PP dd PP rt er P φ 3 dr ¹

P tr d Φ dd CQ d Φ PJ Φ Φ P- LQ CD rt rt PJ = Φ n P- rt LQ φ rt D φ Cd dd P d LQ d P d CD CD Φ P- Φ rt P PJ d Φ PX d Q Φ P- PJ d ≤ LQ CD d Φ φ Cd <d D • Ω J Φ P- Φ PJ Ό CD P- 0 = rt P rt d

Di P- Ό 3 P Φ 0 d ^• σ tr tr P- LQ ^ 3 d J tr EΛ φ CD J φ Φ

P Hi PJ CQ Φ fr rt d d PJ Cd Φ er d er rt J PJ = CD N φ er Φ P- d Cd P

N D. PJ = 3 φ tr CD P LQ d φ PJ = Φ J • H ¹ er LQ P- CD PJ P d Ό Hi P Ό Φ d 3 3 rt rt PJ CD 3 P- ^• n 3 3 Hi Φ Φ rt 0 Hi Φ Φ PJ Hi 1— '3

D. d P Φ Ω φ PJ d co d LQ rt - P CD PJ = 3 rt PP Φ P- J φ tr P- rt d P- 0 rt er P tr 3 Ό d P- 3 - rt rt D. « Φ PJ P- d rt do φ CQ co 3 Φ rt J er CQ P- tr LQ PJ ≤ PJ φ Φ φ PJ h- ¹ d rt rt er P- rt P- • 3 PJ = CD φ rt rt tr 0 3 1— ^■ d PD * Ü ^ h- 'Φ d Φ co

Φ φ 3 C CQ Cd P- 3 I— ¹ P- P- Φ Φ Φ PJ PJ PJ φ P d

P i— ^■ P- D Ω P x LQ co 0 CD P P- Di D- rt NN T3 - 'LQ PJ <

Φ $. P PJ tr d 3 P- d rt P- P- Φ ^ d DD P- J d ¹ tr 0 tr φ D. co Φ PJ CQ Φ • PJ D. Φ PP P- P- NN φ φ dd P- P - I— ¹ Φ φ Φ P- d P- P- d 3 P

Furthermore, to simplify production and to reduce the variety of materials, a component can be provided in which all dielectric layers consist of a varistor ceramic. In particular, dielectric layers that are produced from ZnO-Bi2θ3-Sb2θ3 come into consideration here. Such a varistor ceramic also has excellent properties with regard to its suitability as a dielectric layer for capacitors in certain applications.

The component according to the invention can be produced particularly advantageously by sintering a stack of ceramic green foils lying one above the other. Such a production has the advantage that thin layers are connected to a monolithic component in a single sintering process. Due to the thin ceramic layers, a high capacitance can be achieved with a small footprint of the component.

The invention is explained in more detail below with the aid of exemplary embodiments and the associated figures.

FIG. 1 shows an example of a component according to the invention in a schematic cross section.

FIG. 2 shows the insertion loss of the component from FIG

1 measured depending on the frequency.

Figure 3 shows an example of another component according to the invention with varistor ceramic in schematic

Cross-section .

FIG. 4 shows the insertion loss of the component shown in FIG. 3 measured as a function of the frequency. to to P ¹ P ¹ o in o in O in

PJ Cd d Φ

Hi P-

• CQ

T

P- φ

P ¹ s

P-

0

D. φ

P

Ω d d

3

D-

≤

Φ

P-

CD

Φ rx>

3

Φ

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Φ α

P-

Ω tr

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<!

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CΩ t t

3

>> to t in o in o in o in rt α Di D. fr do Ω tr CD CD <Hl rt tr ^ tr P sd Di LQ d ^> α Ξ Φ U 3 Cd α

PJ = Φ Φ Φ tr Φ P Φ rt et Φ fr Φ Φ Φ t PJ PJ = P- d P- Φ Φ P- P- 3 PJ rt P d P Φ P 3 fr rt PJ OPPP LQ Φ 3 N d 3 tr t X Φ 3 tr d Φ d φ

CD P Φ rt d P d P £, CD d. O rt CD e D. rt φ d Φ

Ω = Ω Ω Φ d Φ Hi PJ = X Φ D Ω Di P d Hi Hl <τj N Ω Φ PP α d P "CQ o tr tr P P- P 0 LQ φ d P- er P- Φ J o P d CQ P Φ rt P- P- Di φ Φ

Φ fr d ^ 3 h- ¹ rt D. P D. φ Φ ω PO PJ φ d P- Φ CD X α φ 3 0 o P Ω d PJ J * - P- J Φ φ φ J tr Λ LQ Ω Ω J d P- φ 3

~ er Hi d O • Φ 3 rt LSI D. cd N d N Φ er er 3 i 3 Ω Φ dd Φ t J t 0 D. J 3 n Di P- s: φ Φ P- Φ CO Φ rt CD X tr rt rt ts Φ Φ N ö φ tr ≤ P- NN (t 3 to D. d X Φ Ω φ rt D. CD P

Ό d P P- Φ 0 ^" ϊ = P - 0 CΩ dd LQ PJ PJ = LQ N Φ α PJ er P Φ P-

3 Φ I— ¹ rt P 3 P Ω LQ et Ό rt φ Φ P • α PJ <P tr CD

3 D. 3 P- PJ = LQ Cd D- tr ^ CD PJ tr 3 D. PJ d Ω 0 X φ Ω to Φ Φ rt s _^ - _^ P- Φ Φ P- N Φ tsi Ω o = d P- Φ N CD tr dd eα et er

P tr LQ P φ φ 3 d CQ Φ P- P- P Hl d d P- rt 3 0 = P Φ

Φ Φ Φ Ω CQ ö Φ X CD d P- d rt et rt ≥; Φ ω CD tr d

3 Cd P d to rt P- CQ rt N Ω P Ω PJ = d tr D. d OJ: α d

Ω Φ LQ

P ¹ 3 D PJ Ω d P • σ tr er s: rt d α d tr Φ d rt tr Φ>

LQ φ LQ Φ tr d tr 0 td P- Φ Φ D. 3 PJ = P et it P- or tr φ XP co d Φ D. Φ rt D. • φ Ω d Ω φ D. d Φ Ω 3 Ω - 3 rt 0 = rt P- Φ CD tr co et t LQ ^ P rt ≤ tr co φ

P tΛ 3 Ω P i d Φ d φ Φ rt P- D Φ • P- X Hi CD + J d tr rt d CD

3 0 Φ rt P PJ = to d P CD d Φ P Φ to LQ LQ Ω Ω 3 P Φ Φ 3 CD rt D. P Φ for LQ D. Φ Ω 3 Ω ι> D 3 Φ Φ - X d tr to JDP 3 3 D d

Φ Φ Φ P d rt D. d tr P φ CD LQ P- Φ P rt Φ LQ Φ d

P d d _ Hi Φ D. D tsi fr Ω Hi 3 P 3 ≤ φ tr Φ to P LQ et CQ 0 P Φ Ω 3 d P d = Φ 0 = φ 0 rt to D. Φ tr Φ CQ φ

Φ Ω to 3 PJ tr Hl for PP CΛ P tr 1— 'rt Φ et CD tr ¹ d

3 er J P- o Cd d rt Cd 0 3 Φ Hl Φ Φ Φ <: Di P- P D d Φ P- PJ =

Ό α Φ Cß co Φ Hl Di PP P- o PJ Ω PJ = rt Φ 3 d Di tsi Ω PJ P- d ^" ϊ: φ Ω d P- 0 P- 3 Φ tϋ d P er LQ Φ Di LQ Φ d tr N φ 3 X tr co Φ I— ¹ φ ^ D Φ Hi LQ Φ rt er Ω et Φ CO co rt P- o rt s- tr 3 P- P- d # CD D Φ d rt o J et Φ et α = •, - _^ P d Φ φ o CQ d Φ 0 φ CD • Ω d P- ⁾ 3 P ⁾ = tr LQ PO d P- D. Λ tr dd LQ CO d II P et in> CD dd rt Φ • φ DD Φ ^ Φ φ P CD 0 PJ Φ PJ * • K *>

Di P co Φ d = P CO CD φ LQ d d ^ P 'Ό 0 X *> ^

Ω α d d Di tr et rt φ Φ J N σi P J in 3 φ

D. J P- P ¹ CQ Φ Φ LQ Φ Φ d X 3 d Hl o φ et N ^K , P 3 LQ

Φ Φ • Ö Ω rt Ω P P P 3 tr φ t φ PJ = N P Λ P- O Φ Φ PJ 3 d

P P tr Ό X tr Φ o = Φ P P d t> Hi Φ S d <rt ^ d P 3 P

Φ HI Φ Φ P- Ω P- CTO CD d P- et Φ P KQ tα Φ Φ PJ = - co PJ P-

^ X rt P Ω P d φ Φ σ XD CD Φ d tsi d P rt PJ 3 CQ P- ¹

Φ P PJ = d Φ tr for J P P- PJ P- d W £! Φ N Φ LQ rt P- Ω d

P Φ P ⁾ = Ω d 3 rt dd φ 3 d Ω 3 P ω ddd J d φ 0 X tr Di J P- LQ er Di Di Φ Hi D. d CD X co Φ PJ φ N d Hi d 3 P Φ Di J

3 d rt Φ d 0 Φ X φ Ω Ω d d i Hl Ω Φ tr Hi d Φ H

Φ Di PJ - 'P ^ PJ Φ er er Φ N Hi 3 CD Φ for P LQ

X P IQ Di Φ d P- - 'PJ 3 <: Φ Hi P- D CD P P Ω Φ

, φ Φ Φ 3 co φ P- T3 3 d o Ω d Φ Hl to rt Φ d Φ J P Cd CO d d P D. d Φ PJ • Φ d er • 3 to N P d 3 3 D fr P rt

PJ co D. Φ LQ (Sl P et φ d II D. D P- P- d Φ Φ

: dd Ω PP tr φ P- O en Φ d NP Φ d tr tr φ Hl P- 1— 'J CQ er Φ Φ d rt Φ <od 3 rt d P ¹ d P- Ω Φ 0 rt J 0 Φ £ P- tr P- Di PJ = P PJ ~ P LQ »d to P- <! Φ Φ rt J tr d 3 Φ rt PT = to P rx>? d Hi φ P- P- Φ

N ≤ rt d Φ d P- 3 d ≤ 0 = Φ fr φ Ω P φ Φ o d

P- P α P- Ω tr d 0 C> o CD LQ P PJ d φ 0 d φ 0 Φ -j

D. 1 o

The dimensions of the component shown in FIG. 3 are 1.44 mm in length, 0.72 mm in width and 0.85 mm in height.

The thickness D of the intermediate layer 4 is 350 μm. The total capacitance C_ + C2 is 60.8 pF, measured at approx. 1 kHz.

Corresponding to the different capacitances C] _ and C2, the resonance frequencies f] _ and f2 shown in FIG. 4 result, which can be read according to FIG. 2 from the curve S21 (f). The lower resonance frequency f ^ is 805 MHz, while the higher resonance frequency f2 is 1.76 MHz.

FIGS. 5A, 5B and 5C show electrode layers 1 in different designs as can be used to increase the inductance of the component according to the invention. The electrode layers 1 according to FIGS. 5A and 5C have at least partially the shape of a meander with respect to their outer contour, which results from a plurality of lateral incisions 9. The electrode layer 1 according to FIG. 5B does not have the shape of a meander, but rather only has a lateral incision 9. It is crucial in all of the exemplary embodiments of the electrode layers 1 shown in FIG. 5A, FIG. 5B and FIG. 5C that the electrode layers 1 deviate from a rectilinear structure and thus force an electric current charging the corresponding capacitance to describe a non-rectilinear path, as a result of which the Inductance of such an electrode layer 1 is increased. As the number of individual curvatures increases, as shown in the sequence in FIGS. 5B, 5A and 5C, the inductance of the electrode layer 1 and thus the inductance of the multilayer component according to the invention also increases.

FIG. 6 shows a multilayer component according to the invention with reference numerals that correspond to FIG. 1, which according to the invention

Claims

claims

1. Electrical multilayer component

with at least two mutually different capacitors (C) _, C2 connected in parallel, each having at least two overlapping electrode layers (1) with a dielectric layer (2) arranged between them,

- in which the capacitances (C] _, C2) are stacked to form a layer stack (3) and are spaced apart from one another by at least one intermediate layer (4) in such a way that the component has different resonance frequencies (C_, C2) defined by the capacitances (C_, C2) f _] _, f2).

2. The component according to claim 1, wherein the intermediate layers (4) and the dielectric layers (2) consist of the same ceramic material.

3. Component according to claim 1 to 2, wherein the intermediate layers (4) and the dielectric layers (2) are made from one or more layers of the same layer thickness.

4. The component according to claim 1 to 3, wherein the outer contour of at least one electrode layer (1) has at least one lateral incision (9).

5. The component according to claim 1 to 4, on the outside of which a mark (5) is attached which is suitable for distinguishing the top of the layer stack (3) from the underside thereof.

6. The component according to claim 1 to 5, in which at least one of the dielectric layers (2) a material whose insulation resistance is voltage-dependent.

7. The component according to claim 6, wherein at least one of the dielectric layers (2) consists of a varistor ceramic.

8. The component according to claim 6, in which all dielectric layers (2) consist of a varistor ceramic.

9. The component according to claim 1 to 8, which is produced by sintering a stack of superimposed ceramic green foils.

10. Arrangement of a component according to claims 1 to 9 on a circuit board (6), in which the layers (1, 2, 4) of the component are arranged parallel to the circuit board (6) and in which the smaller capacitance (C2) closer to the Printed circuit board (6) lies as the larger capacity (C _] _).