CN203882808U - Low-equivalent series resistance capacitor - Google Patents
Low-equivalent series resistance capacitor Download PDFInfo
- Publication number
- CN203882808U CN203882808U CN201420135692.6U CN201420135692U CN203882808U CN 203882808 U CN203882808 U CN 203882808U CN 201420135692 U CN201420135692 U CN 201420135692U CN 203882808 U CN203882808 U CN 203882808U
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- CN
- China
- Prior art keywords
- low
- series resistance
- equivalent series
- electrode welding
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model relates to a low-equivalent series resistance capacitor and belongs to the capacitor technical field. The low-equivalent series resistance capacitor includes a shell, core units and electrode welding sheets; a plurality of core units arranged in the shell are connected in parallel and thereafter are connected with two electrode welding sheets on the shell; a long oval hole is formed in the electrode welding sheets respectively; and the distance between the electrode welding sheets is equal to the distance between connection holes of an IGBT. The low-equivalent series resistance capacitor of the utility model is provided with the left electrode welding sheet and the right electrode welding sheet, so that almost no connection inductance exists; and the internal unit cores are of a multilayer inner series structure, and therefore, equivalent series resistance is low, and the effect of peak protection for the IGBT is excellent.
Description
Technical field
The utility model relates to capacitor technology field, relates in particular to a kind of low ESR capacitor.
Background technology
Capacitor is a kind of conventional electronic product, capacitor also has a lot of classification simultaneously, there is high current-carrying, filtering, explosion-proof etc., the electric capacity of these difference in functionalitys all can meet certain requirement, in electronic product, commonly use the high-accuracy semiconductor components and devices of a kind of IGBT, it had both had advantages of that MOSFET device drive power was little and switching speed is fast, having again bipolar device saturation pressure reduces and advantage capacious, but this components and parts are often subject to the infringement of peak voltage, and ordinary capacitor is because inductance is high, equivalent series resistance makes this components and parts protection poor effect.
Utility model content
The purpose of this utility model is to provide a kind of low ESR capacitor, and it adopts left and right electrode weld tabs, and almost, without connecting inductance, internal element fuse adopts string structure in multilayer, and equivalent series resistance is low, effective to the spike protection of IGBT.
In order to solve existing problem in background technology, the utility model is by the following technical solutions: it comprises shell, cartridge units, electrode weld tabs, after having a plurality of cartridge units to be connected in parallel in described shell, be connected with two electrode weld tabs of shell top, on described electrode weld tabs, have an oblong hole, the spacing between described electrode weld tabs equals the pitch-row of the connecting hole of IGBT.
[0007]it adopts left and right electrode weld tabs the utility model, and almost, without connecting inductance, internal element fuse adopts string structure in multilayer, and equivalent series resistance is low, effective to the spike protection of IGBT.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1.
Embodiment
Referring to Fig. 1-2, a kind of low ESR capacitor, it comprises shell 1, cartridge units 2, electrode weld tabs 3, after having a plurality of cartridge units 2 to be connected in parallel in described shell 1, be connected with company's electrode weld tabs 3 of shell 1 top, on described electrode weld tabs 3, have an oblong hole, the spacing that described electrode weld tabs is 3 equals the pitch-row of the connecting hole of IGBT.During installation, the oblong hole on electrode weld tabs is aimed to the connecting hole of IGBT; then fix; capacitor is directly fixed on IGBT like this; almost without connecting inductance; enclosure unit fuse adopts Multi-layer Parallel structure simultaneously, makes fuse contact area large, thereby its low ESR is reduced greatly; therefore the utlity model has good peak absorbing effect, protection effect is better.
Claims (1)
1. a low ESR capacitor, it is characterized in that, it comprises shell, cartridge units, electrode weld tabs, after having a plurality of cartridge units to be connected in parallel in described shell, be connected with two electrode weld tabs of shell top, on described electrode weld tabs, have an oblong hole, the spacing between described electrode weld tabs equals the pitch-row of the connecting hole of IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135692.6U CN203882808U (en) | 2014-03-25 | 2014-03-25 | Low-equivalent series resistance capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135692.6U CN203882808U (en) | 2014-03-25 | 2014-03-25 | Low-equivalent series resistance capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882808U true CN203882808U (en) | 2014-10-15 |
Family
ID=51683283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135692.6U Expired - Fee Related CN203882808U (en) | 2014-03-25 | 2014-03-25 | Low-equivalent series resistance capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933042A (en) * | 2018-06-11 | 2018-12-04 | 铜陵市胜美达电子制造有限公司 | A kind of IGBT absorption protective condenser |
-
2014
- 2014-03-25 CN CN201420135692.6U patent/CN203882808U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933042A (en) * | 2018-06-11 | 2018-12-04 | 铜陵市胜美达电子制造有限公司 | A kind of IGBT absorption protective condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20170325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |