Tantalum capacitor including nickel
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHyunho Shin, Youngjune Lee, Wansuk Yang, Eun Ji Kong, Ji Han Seo, Hyunsub Oh
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Abstract
A tantalum capacitor including a capacitor body including a tantalum body including a tantalum wire exposed on one side and a capsule portion configured to surround the tantalum body so that an end of the tantalum wire is exposed; a first metal layer on one side of the capacitor body and a second metal layer on one side of the first metal layer; and an external electrode connected to the first metal layer, wherein the first metal layer includes Cr (chromium), Ti (titanium), an alloy thereof, or a mixture thereof, and the second metal layer includes Ni (nickel), an alloy including the same, or a mixture including the same.
Claims15
A tantalum capacitor, comprising
- a capacitor body including (i) a tantalum body including a tantalum wire extending toward a surface of the capacitor body;
- and (ii) a capsule portion surrounding the tantalum body such that the capsule portion does not cover an end of the tantalum wire;
- a solid electrolyte layer disposed on a surface of the tantalum body and including para-toluenesulfonic acid (P-TSA);
- a first metal layer on one side of the capacitor body;
- a second metal layer on one side of the first metal layer;
- and
- an external electrode connected to the first metal layer,
- wherein the first metal layer includes Cr (chromium), Ti (titanium), an alloy thereof, or a mixture thereof,
- the second metal layer includes Ni (nickel), an alloy including the same, or a mixture including the same,
- an average thickness of the first metal layer is smaller than an average thickness of the second metal layer,
- an average thickness of the first metal layer is 20 nm to 100 nm, and
- an average thickness of the second metal layer is 50 nm to 500 nm.
A tantalum capacitor, comprising
- a capacitor body including (i) a tantalum body including a tantalum wire extending toward a surface of the capacitor body and (ii) a capsule portion surrounding the tantalum body such that the capsule portion does not cover an end of the tantalum wire;
- a solid electrolyte layer disposed on a surface of the tantalum body and including para-toluenesulfonic acid (P-TSA);
- a first metal layer on a first side of the capacitor body;
- a second metal layer on one side of the first metal layer;
- a third metal layer on a second side of the capacitor body;
- a fourth metal layer on one side of the third metal layer;
- and
- an external electrode connected to the first metal layer and the third metal layer,
- wherein the first and third metal layers include Cr (chromium), Ti (titanium), an alloy thereof, or a mixture thereof,
- the second and fourth metal layers include Ni (nickel), an alloy including the same, or a mixture including the same,
- an average thickness of each of the first and third metal layers is smaller than an average thickness of each of the second and fourth metal layers,
- an average thickness of each of the first metal layer and the third metal layer is 20 nm to 100 nm, and
- an average thickness of each of the second metal layer and the fourth metal layer is 50 nm to 500 nm.
Dependencies are inferred from the claim text.