公开(公告)号：EP2847775A2

公开(公告)日：2015-03-18

申请号：EP13715980.2

申请日：2013-04-11

Applicant: Epcos AG

Inventor： ENGEL, Günter ,  SCHOSSMANN, Michael ,  KOINI, Markus ,  TESTINO, Andrea ,  HOFFMANN, Christian

IPC: H01G4/30 ,  H01G4/232 ,  H01G4/12

Abstract: This invention relates to a ceramic multi-layered capacitor (1) which comprises a base body (2), which has ceramic layers (3), which are arranged to form a stack in a layer stacking direction (S), and first and second electrode layers (41, 42), which are arranged between the ceramic layers (3). The multi-layered capacitor (1) further comprises a first external contact (51), which is arranged on a first lateral face (61) of the base body (2) and is connected in an electrically conductive manner to the first electrode layers (41), and a second external contact (52), which is arranged on a second lateral face (62), opposite the first lateral face (61), of the base body (2) and is connected in an electrically conductive manner to the second electrode layers (42). The base body (2) has a width B along the layer stacking direction (S), a height H perpendicular to the first lateral face (61) and a length L perpendicular to the height H and perpendicular to the layer stacking direction (S), wherein the relationship B/H ≥ 0.2 applies for the ratio of width B to height H.

公开(公告)号：EP2513993A1

公开(公告)日：2012-10-24

申请号：EP10795312.7

申请日：2010-12-15

Applicant: Epcos AG

Inventor： SCHOSSMANN, Michael ,  FELTZ, Adalbert

IPC: H01L41/187 ,  H01L41/083 ,  H01L41/24 ,  C04B35/491 ,  C04B35/493

CPC classification number: H01L41/273 ,  C04B35/493 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3241 ,  C04B2235/3255 ,  C04B2235/3258 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3286 ,  C04B2235/3289 ,  C04B2235/3294 ,  C04B2235/3296 ,  C04B2235/652 ,  C04B2235/768 ,  H01L41/083 ,  H01L41/1876

Abstract: The invention relates to a piezoelectric ceramic material of the general formula: P
1-c-d D
c Z
d (PbO)
w where: 0 1-v Ag
I
v ] [ (Zr
1-y Ti
y )
1-u Cu
II
u ] O
3 , where 0.50 ≤ 1-y ≤ 0.60; 0 1 O)
1-p (M
2 O)
p ]
a [ Nb
2 O
5 ]
1-a where M
1 stands for Ba
1-t Sr
t , where 0 ≤ t ≤ 1, M
2 stands for Sr and/or Ca, and 0 l R
r ) O
3 where L is present in oxidation stages II or III, and R is present in the oxidation stages VI or V, and: L
II is selected from Fe, Mg, Co, Ni or Cu in combination with R
VI = W, where l = 1/2 and r = 1/2, or L
III is selected from Fe, Cr or Ga in combination with R
V = Nb, Ta or Sb, where l = 1/2 and r = 1/2, or L
III is selected from Fe, Cr or Ga in combination with R
VI = W, where l = 2/3 and r = 1/3.