CN203397914U

CN203397914U - An ultra-low ESR chip macromolecular solid electrolytic capacitor

Info

Publication number: CN203397914U
Application number: CN201320516776.XU
Authority: CN
Inventors: 袁坤阳; 李亮; 王文波; 赵知魏; 徐弘扬
Original assignee: ZHUZHOU HONGDA ELECTRONICS CO Ltd
Current assignee: Zhuzhou Hongda Electronics Corp ltd
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-01-15
Anticipated expiration: 2023-08-23

Abstract

The utility model discloses an ultra-low ESR chip macromolecular solid electrolytic capacitor comprising a core body and lead wires. A tantalum pentoxide layer is disposed on the core body. A macromolecular conducting layer is arranged on the tantalum pentoxide layer. A carbon layer is disposed on the macromolecular conducting layer. A silver layer is arranged on the carbon layer. An epoxy resin layer is disposed on the silver layer. Two lead wires are provided and are connected with the core body in order to lead out capacitance. The core body is led out by two lead wires rather than one conventional lead wire. Therefore, the ESR of a capacitor is greatly decreased and the size of the capacitor is greatly decreased. The probability of product failure caused by self heating of the capacitor in a using process is decreased and reliability is enhanced. The operative performance and reliability of the chip macromolecular solid electrolytic tantalum capacitor under nominal voltage of 63V is greatly enhanced. A novel product under a platform with the nominal voltage of 63V can be developed and the application of the chip macromolecular solid electrolytic tantalum capacitor in electron industry is expanded.

Description

A kind of ultralow ESR chip polymer solid electrolyte capacitor

Technical field

The utility model relates to a kind of low ESR chip capacitor, relates in particular to a kind of ultralow ESR chip capacitor.

Background technology

Chip-type solid electrolyte Ta capacitor is suitable for surface mount because volume low capacity is high and is widely used in electronic circuit, but the development along with technology, particularly in current low impedance circuit, due to the ESR(equivalent series resistance of tantalum capacitor own) existence, while causing capacitor to use easily heating cause under the rated voltage of inefficacy, particularly 63V, use more obvious.

Utility model content

The purpose of this utility model is to propose a kind of ESR that can greatly reduce capacitor for above-mentioned technical problem, reduces capacitor and causes the ultralow ESR chip polymer solid electrolyte tantalum capacitor of failure probability because generating heat in use procedure.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of ultralow ESR chip polymer solid electrolyte capacitor, comprises core body and lead-in wire; Tantalum pentoxide layer is arranged on described core body, and conductive polymer layer is arranged on described tantalum pentoxide layer, and carbon-coating is arranged on described conductive polymer layer, and silver layer is arranged on described carbon-coating, and epoxy resin layer is arranged on described silver layer; Described lead-in wire is two, and described lead-in wire is connected with core body, and capacitance is drawn.

In the utility model, described core body is square.

In the utility model, described core body is tantalum core.

In the utility model, described lead-in wire is tantalum line.

In the utility model, the specified use voltage of described ultralow ESR chip polymer solid electrolyte capacitor is 63V.

In the utility model, described ultralow ESR chip polymer solid electrolyte capacitor is the ultralow ESR chip of 63V polymer solid electrolyte tantalum capacitor.

The utility model is drawn core body to change into by two lead-in wires by a traditional lead-in wire and is drawn, greatly reduce the ESR of capacitor, and greatly reduced the small product size of capacitor, reduced the probability that causes product failure in capacitor use procedure because of self-heating, improve reliability, the utility model has improved properties of product and product reliability that chip polymer solid electrolyte tantalum capacitor is worked under 63V rated voltage greatly, can develop the novel product under this rated voltage platform, expanded the application of chip macromolecule tantalum capacitor in electron trade, opened up market.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the utility model transformation pre-structure schematic diagram;

Fig. 3 is that parts of the present utility model form schematic diagram.

In figure: 1, tantalum core, 2, tantalum line, 3, tantalum pentoxide layer, 4, conductive polymer layer, 5, carbon-coating, 6, silver layer, 7, epoxy resin layer.

Embodiment

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

As shown in drawings, embodiment mono-, a kind of ultralow ESR chip polymer solid electrolyte tantalum capacitor, comprise that tantalum core 1(is tantalum anode body) and tantalum line 2, the outer tantalum pentoxide layer 3 that is coated with one deck employing electrochemical fabrication of tantalum core 1, the outer covering conductive polymer of tantalum pentoxide layer 3 layer 4, the outer covering carbon-coating 5 of conductive polymer layer 4, the outer covering silver layer 6 of carbon-coating 5, the outer cover ring epoxy layer 7 of silver layer 6, described tantalum core 1 is square, tantalum core 1 is inner adopts two tantalum lines 2 that capacitance is drawn, be equivalent to two Parallel-connected Capacitors to draw, but on volume, be but far smaller than two true capacitor parallel connections, can greatly reduce the ESR of tantalum capacitor, the ESR of tantalum capacitor can be reduced in theory to original half, so just reduced the self-heating amount in capacitor use procedure, reduced the probability that product lost efficacy because of self-heating, improved the reliability of product.Embodiment bis-, be that with the difference of embodiment mono-a kind of specified use voltage of ultralow ESR chip polymer solid electrolyte tantalum capacitor is 63V, due to the ESR(equivalent series resistance of tantalum capacitor own) existence, while causing capacitor to use, easily heating causes inefficacy, particularly under the rated voltage of 63V, use more obvious, the utility model has improved properties of product and product reliability that chip polymer solid electrolyte tantalum capacitor is worked under 63V rated voltage greatly, can develop the novel product under this rated voltage platform, expanded the application of chip macromolecule tantalum capacitor in electron trade, opened up market.

The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. a ultralow ESR chip polymer solid electrolyte capacitor, comprises core body and lead-in wire; It is characterized in that, tantalum pentoxide layer is arranged on described core body, and conductive polymer layer is arranged on described tantalum pentoxide layer, and carbon-coating is arranged on described conductive polymer layer, and silver layer is arranged on described carbon-coating, and epoxy resin layer is arranged on described silver layer; Described lead-in wire is two, and described lead-in wire is connected with core body, and capacitance is drawn.

2. a kind of ultralow ESR chip polymer solid electrolyte capacitor as claimed in claim 1, is characterized in that, described core body is square.

3. a kind of ultralow ESR chip polymer solid electrolyte capacitor as claimed in claim 1, is characterized in that, described core body is tantalum core.

4. a kind of ultralow ESR chip polymer solid electrolyte capacitor as claimed in claim 1, is characterized in that, described lead-in wire is tantalum line.

5. a kind of ultralow ESR chip polymer solid electrolyte capacitor as claimed in claim 1, is characterized in that, the specified use voltage of described ultralow ESR chip polymer solid electrolyte capacitor is 63V.

6. a kind of ultralow ESR chip polymer solid electrolyte capacitor as claimed in claim 1, is characterized in that, described ultralow ESR chip polymer solid electrolyte capacitor is the ultralow ESR chip of 63V polymer solid electrolyte tantalum capacitor.