Epcos Ag

Tdk Electronics Ag

Andrea Testino

Christian Hoffmann

Markus Koini

Michael Schossmann

Günter Engel

Guenter Engel

Markus Ortner

A ceramic material for capacitors using multilayer technology of formula (I): PbAB(ZrTi)CSiO+y&#xb7;PBO wherein A is selected from the group consisting of La, Nd, Y, Eu, Gd, Tb, Dy, Ho, Er and Yb; C is selected from the group consisting of Ni and Cu; and 0&#x3c;a&#x3c;0.12, 0.05&#x2264;x&#x2264;0.3, 0&#x2264;c&#x3c;0.12, 0.001&#x3c;e&#x3c;0.12 and 0&#x2264;y&#x3c;1.

Ceramic material and capacitor comprising the ceramic material

A capacitor arrangement includes at least one ceramic multilayer capacitor with a main body having ceramic layers and first and second electrode layers arranged therebetween. The capacitor also has a first external contact and a second external contact on mutually opposite side surfaces. The first external contact is electrically conductively connected to the first electrode layers and the second external contact is electrically conductively connected to the second electrode layers. A contact arrangement includes two metallic contact plates, between which the at least one ceramic multilayer capacitor is arranged. The first and second external contacts are electrically conductively connected in each case to one of the metallic contact plates.

Capacitor arrangement

A ceramic multi-layer capacitor includes a main body, which has ceramic layers arranged along a layer stacking direction to form a stack, and first and second electrode layers arranged between the ceramic layers. The multi-layer capacitor also includes a first external contact-connection arranged on a first side surface of the main body and electrically conductively connected to the first electrode layers, and a second external contact-connection arranged on a second side surface of the main body. The second side surface is situated opposite the first side surface and is electrically conductively connected to the second electrode layers.

Ceramic multi-layered capacitor

A ceramic multi-layer capacitor includes a main body, which has ceramic layers arranged along a layer stacking direction to form a stack, and first and second electrode layers arranged between the ceramic layers. The multi-layer capacitor also includes a first external contact-connection arranged on a first side surface of the main body and electrically conductively connected to the first electrode layers, and a second external contact-connection arranged on a second side surface () of the main body (). The second side surface is situated opposite the first side surface and is electrically conductively connected to the second electrode layers.

A ceramic multi-layer capacitor is disclosed. In an embodiment, the capacitor includes a main body having ceramic layers and first and second electrode layers arranged therebetween, wherein the ceramic layers includes a ceramic material on the basis of BaTiZrOwhere 0&#x2266;y&#x2266;1, which has a temperature-dependent capacitance anomaly.

Ceramic multi-layer capacitor based on BaTi(1-y)ZryO3

A ceramic multilayer capacitor includes a first capacitor unit, which comprises a first material, and a second capacitor units, which comprises a second material. The first and the second capacitor unit are electrically connected in parallel. At low applied voltages, the first material has a high dielectric value and, at high applied voltages the second material has a high dielectric value.

Ceramic multilayer capacitor

A ceramic material for capacitors uses multilayer technology of the general formula: PbAB(ZrTi)LiCFeSiO+y.PBO wherein A is selected from the group consisting of La, Nd, Y, Eu, Gd, Tb, Dy, Ho, Er and Yb; B is selected from the group consisting of Na, K and Ag; C is selected from the group consisting of Ni, Cu, Co and Mn; and 0&#x3c;a&#x3c;0.12; 0.05&#x2266;x&#x2266;0.3; 0&#x3c;b&#x3c;0.12; 0&#x2266;c&#x2266;0.12; 0&#x3c;d&#x3c;0.12; 0&#x2266;e&#x2266;0.12; 0&#x2266;f&#x2266;0.12; 0&#x2266;y&#x2266;1, and wherein b+d+e+f&#x3e;0.

A method for producing an electrical multi-layer component is described, wherein a first ceramic layer () comprising a first and a second ceramic material () is applied to a ceramic substrate (). The first ceramic material () is applied to a first surface partition () of the substrate () by a first inkjet printing step and the second ceramic material () is applied to a second surface partition () of the substrate () by a second inkjet printing step, the second surface partition () surrounding and enclosing the first surface partition (). The second ceramic material () is different from the first ceramic material (). Furthermore, an electrical multi-layer component is described.

Method for producing an electrical multi-layer component and electrical multi-layer component

A varactor includes a first PTC region, which comprises a ceramic material with a positive temperature coefficient with respect to the resistance. The varactor also includes a capacitor region that includes a first electrode, a second electrode, and a first dielectric layer arranged between the first electrode and the second electrode. The first PTC region and the capacitor region are connected thermally conductively to one another. The capacitance of the capacitor region can be changed by applying a bias to the first PTC region, the capacitor region or to the first PTC region and the capacitor region.

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Genoa, Italy

Andrea Testino