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US 2015/0318118 A1Published application
Tantalum capacitor and method of manufacturing the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHyoung Sun HAM, Jun Suk JUNG, Jae Hyuk CHOI, Jae Yik HOWANG
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Abstract
In a tantalum capacitor, a bending angle between a positive electrode terminal part of a positive electrode lead frame and a wire connection part connected to a tantalum wire may be set to 87 to 93° to maintain constant a contact area between a non-insertion region of the tantalum wire and an end portion of the wire connection part at the time of welding and adhering the non-insertion region and the end portion to each other.
Claims13
A tantalum capacitor comprising:
- a capacitor body containing tantalum powder particles;
- a tantalum wire having an insertion region positioned in the capacitor body and a non-insertion region exposed through one end surface of the capacitor body in a length direction of the capacitor body;
- a molding part enclosing the capacitor body and the tantalum wire;
- a positive electrode lead frame including a positive electrode terminal part exposed through one end surface of the molding part in the length direction of the molding part and a wire connection part bent from the positive electrode terminal part so as to be connected to the non-insertion region of the tantalum wire, the wire connection part having a bending angle of 87 to 93° with respect to the positive electrode terminal part;
- and
- a negative electrode lead frame in which the capacitor body is mounted, to be exposed to the other end surface of the molding part in the length direction.
3 more elements
A method of manufacturing a tantalum capacitor, comprising:
- preparing a positive electrode lead frame including a wire connection part having a bending angle of 87 to 93° with respect to a positive electrode terminal part having a flat shape by bending the positive electrode terminal part upwardly and preparing a negative electrode lead frame having a flat shape;
- disposing the positive electrode terminal part of the positive electrode lead frame and the negative electrode lead frame so as to be spaced apart from each other;
- mounting a capacitor body on an upper surface of the negative electrode lead frame and connecting an end portion of the wire connection part of the positive electrode lead frame to a non-insertion region of a tantalum wire exposed through one end surface of the capacitor body in the length direction of the capacitor body;
- molding a resin so as to enclose the capacitor body and the tantalum wire and forming a molding part so that the positive electrode terminal part of the positive electrode lead frame and the negative electrode lead frame are partially exposed to both ends of the molding part in the length direction of the molding part, respectively;
- and
- bending the positive electrode terminal part of the positive electrode lead frame upwardly to closely adhere the positive electrode terminal part to one end surface of the molding part in the length direction and bending the exposed portion of the negative electrode lead frame upwardly to closely adhere the exposed portion to the other end surface of the molding part in the length direction.
3 more elements
Dependencies are inferred from the claim text.