Mounting substrate

Patent metadata

Field	Value
Publication number	US-2016381802-A1
Application number	US-201615185099-A
Country	US
Kind code	A1
Filing date	Jun 17, 2016
Priority date	Jun 26, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A multilayer ceramic capacitor connected to an output electrode and an input electrode of a mounting substrate includes a laminated body. In the laminating direction of the laminated body, the shortest distance from an outer first internal electrode to the surface of an external electrode on the side closer to a first principal surface, and the shortest distance from an outer second internal electrode to the surface of an external electrode on the side closer to a second principal surface are each about 40 μm or less. In the width direction of the laminated body, the shortest distance from an end of an internal electrode to the surface of the external electrode on the side closer to a first side surface, and the shortest distance from an end of an internal electrode to the surface of the external electrode on the side closer to a second side surface are each about 40 μm or less.

First claim

What is claimed is:

1 . A mounting substrate comprising:
an output electrode that outputs signals including a frequency region of 10 GHz or higher; an input electrode that inputs signals including a frequency region of 10 GHz or higher; and a multilayer ceramic capacitor connected to the output electrode and the input electrode; wherein the multilayer ceramic capacitor includes:
a laminated body including a plurality of dielectric layers and a plurality of internal electrodes, a first principal surface and a second principal surface opposed in a laminating direction, a first side surface and a second side surface opposed in a width direction perpendicular or substantially perpendicular to the laminating direction, and a first end surface and a second end surface opposed in a length direction perpendicular or substantially perpendicular to the laminating direction and the width direction;
a first external electrode that covers the first end surface, and extends from the first end surface and covers the first principal surface, the second principal surface, the first side surface, and the second side surface; and
a second external electrode that covers the second end surface, and extends from the second end surface and covers the first principal surface, the second principal surface, the first side surface, and the second side surface; wherein
the plurality of internal electrodes includes a first internal electrode connected to the first external electrode and a second internal electrode connected to the second external electrode;
as viewed in cross sections including the first external electrode on the first principal surface, the second principal surface, the first side surface, and the second side surface, and cross sections including the second external electrode on the first principal surface, the second principal surface, the first side surface, and the second side surface:
a longest dimension is about 40 μm or less among dimensions in the laminating direction from the internal electrode located closest to the first principal surface in the laminating direction, among the first internal electrode and the second internal electrode, to a surface of the external electrode disposed on a side closer to the first principal surface, and from the internal electrode located closest to the second principal surface in the laminating direction, among the first internal electrode and the second internal electrode, to a surface of the external electrode disposed on a side closer to the second principal surface; and
a longest dimension is about 40 μm or less among dimensions in a width direction from a surface of the first internal electrode or the second internal electrode located closest to the first side surface in the width direction, among the first internal electrode and the second internal electrode, to a surface of the external electrode disposed on a side closer to the first side surface, and from the surface of the first internal electrode or the second internal electrode located closest to the second side surface in the width direction, among the first internal electrode and the second internal electrode, to a surface of the external electrode disposed on a side closer to the second side surface.

2 . The mounting substrate according to claim 1 , wherein
a difference is about 10 μm or less between the longest dimension among dimensions in the laminating direction from the internal electrode located closest to the first principal surface in the laminating direction, among the first internal electrode and the second internal electrode, to the surface of the external electrode disposed on the side closer to the first principal surface, and from the internal electrode located closest to the second principal surface in the laminating direction, among the first internal electrode and the second internal electrode, to the surface of the external electrode disposed on the side closer to the second principal surface; and the longest dimension among dimensions in the width direction from the surface of the first internal electrode or the second internal electrode located closest to the first side surface in the width direction, among the first internal electrode and the second internal electrode, to a surface of the external electrode disposed on a side closer to the first side surface, and from the surface of the first internal electrode or the second internal electrode located closest to the second side surface in the width direction, among the first internal electrode and the second internal electrode, to the surface of the external electrode disposed on the side closer to the second side surface.

3 . The mounting substrate according to claim 1 , wherein
the plurality of internal electrodes includes a plurality of first internal electrodes and a plurality of second internal electrodes; the plurality of first internal electrodes and the plurality of second internal electrodes have a dimension of about 0.3 μm or more and about 1.0 μm or less in the laminating direction, and a total number of the first internal electrodes and the second internal electrodes is 150 or more and 350 or less.

4 . The mounting substrate according to claim 1 , wherein the multilayer ceramic capacitor has a dimension of about 0.2 mm or more and about 0.7 mm or less in the length direction.

5 . The mounting substrate according to claim 1 , wherein the first external electrode and the second external electrode each includes a base electrode disposed on the laminated body, and a plated layer disposed on the base electrode, and the plated layer includes Au.

6 . The mounting substrate according to claim 1 , wherein the internal electrodes include Cu.

7 . The mounting substrate according to claim 1 , wherein the internal electrodes include Ni.

8 . The mounting substrate according to claim 1 , wherein the laminated body has a parallelepiped shape.

9 . A mounting substrate comprising:
an output electrode that outputs signals including a frequency region of 10 GHz or higher; an input electrode that inputs signals including a frequency region of 10 GHz or higher; and a first multilayer ceramic capacitor and a second multilayer ceramic capacitor each connected to the output electrode and the input electrode; wherein each of the first multilayer ceramic capacitor and the second multilayer capacitor includes:
a laminated body including a plurality of dielectric layers laminated and a plurality of internal electrodes, a first principal surface and a second principal surface opposed in a laminating direction, a first side surface and a second side surface opposed in a width direction perpendicular or substantially perpendicular to the laminating direction, and a first end surface and a second end surface opposed in a length direction perpendicular or substantially perpendicular to the laminating direction and the width direction;
a first external electrode that covers the first end surface, and extend from the first end surface and covers the first principal surface, the second principal surface, the first side surface, and the second side surface; and
a second external electrode that covers the second end surface, and extend from the second end surface and covers the first principal surface, the second principal surface, the first side surface, and the second side surface; wherein
the plurality of internal electrodes includes a first internal electrode connected to the first external electrode and a second internal electrode connected to the second external electrode;
as viewed in cross sections including the first external electrode on the first principal surface, the second principal surface, the first side surface, and the second side surface, and cr

Assignees

• Murata Manufacturing Co

Inventors

• Taniguchi Masaaki
• Yamamoto Yasuji
• Ishibashi Takahiro

Classifications

• H01G4/30 Primary

  Stacked capacitors (H01G4/33 takes precedence) · CPC title

• H01G4/248 Primary

  the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) · CPC title

• H05K1/181 Primary

  associated with surface mounted components · CPC title

• H05K2201/10015

  Non-printed capacitor · CPC title

• H01G4/12

  Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title