- 您现在的位置：买卖IC网 > PDF目录17846 > DCK-3R3E224U-E (Elna America)CAP SUPER 220MF 3.3V COIN SMD PDF资料下载
参数资料
| 型号： | DCK-3R3E224U-E |
| 厂商： | Elna America |
| 文件页数： | 139/145页 |
| 文件大小： | 0K |
| 描述： | CAP SUPER 220MF 3.3V COIN SMD |
| 产品目录绘图： | DC Series Front DC Series Side |
| 标准包装： | 200 |
| 系列： | DCK |
| 电容： | 220mF |
| 电压 - 额定： | 3.3V |
| 容差： | -20%，+80% |
| ESR（等效串联电阻）： | 200 欧姆 |
| 寿命@温度： | 60°C 时为 1000 小时 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 币形，宽型端子 - 反侧 |
| 引线间隔： | 0.079"（2.00mm） |
| 包装： | 散装 |
| 尺寸/尺寸： | 0.268" 直径（6.80mm） |
| 高度 - 座高（最大）： | 0.083"（2.10mm） |
| 工作温度： | -10°C ~ 60°C |
| 产品目录页面： | 1912 (CN2011-ZH PDF) |
| 其它名称： | 604-1007 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页当前第139页第140页第141页第142页第143页第144页第145页
TECHNICAL NOTE
ELECTRIC DOUBLE
LAYER CAPACITORS
?
1 Description of Electric Double Layer
Capacitor
1-1 Basic Concepts
Generally capacitors are constructed with a dielectric
placed between opposed electrodes, functioning as
capacitors by accumulating charges in the dielectric
material. Aluminum electrolytic and tantalum electro-
lytic capacitors, for example, use an aluminum oxide
film and a tantalum oxide film as the dielectric,
respectively.
On the other hand, Electric Double Layer Capacitors
have no visible dielectric in a general sense but utilize
the state referred to as the electric double layer, which
is developed naturally on the interface between
substances, as the function of dielectric.
1-2 Operating Principle
The Electric Double Layer represents the state in
which positive and negative charges exist at a very
short distance on the boundary where contact occurs
between two different substances (e.g. solid and
liquid). By externally applying a voltage below a
certain voltage to the boundary, higher charges can
be accumulated. Accordingly, charge and discharge
of electric double layer capacitors utilize adsorption
and desorption of ions to the ionic adsorption layer
(Electric Double Layer) formed on the electrode
surface of the activated carbon used for electrodes.
Applying DC voltage externally across the electrodes
of the Electric Double Layer allows almost no passage
of current up to a certain voltage, exhibiting a
condition like insulation.
However, the application of voltages exceeding the
certain voltage causes electrolysis to occur in the
electrolyte, resulting in abrupt passage of current.
This voltage determines the resistance of voltage of
an Electric Double Layer Capacitor. We use an
organic electrolyte and its standard electrolysis occurs
at the voltage of about 2.5 ～ 3V.
1-3 Advantages and Disadvantages of Electric
Double Layer Capacitor
[Advantages]
(1) Small size and capacitance in farads (F) available
by utilizing the activated carbon electrode with a
large surface area
(2) No special charging circuit and constrains during
discharge are required.
(3) No effect on the life through overcharging and
overdischarging
(4) Environmentally clean energy
[Disadvantage]
(1) The life is limited due to the use of electrolyte.
(2) Series connection is required when used with a
low resistance of voltage at a high voltage.
(3) Cannot be used in AC circuits due to high internal
resistance unlike aluminum electrolytic capacitors.
Electrolyte
Activated
carbon
Charge
Activated
carbon
Discharge
Fig.1 Schematic of Principle of Electric Double Layer Capacitor
NOTE
CAT.No.2008/2009E(2008.10.1)
Design, Speci?cations are subject to change without notice.
Ask factory for technical speci?cations before purchase and/or use.
相关PDF资料 |
PDF描述 |
|---|---|
| PVC11 | CAP FILM 1UF 100VDC RADIAL |
| PVC1082 | CAP FILM 0.82UF 100VDC RADIAL |
| AT4153-021 | SW KEY HIGH SECURITY SW KEY #21 |
| AT4152-042 | SW KEY TUBULAR HIGH SECURITY #42 |
| AT4152-041 | SW KEY TUBULAR HIGH SECURITY #41 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DCK413S2 | 制造商:Dewalt 功能描述:12 Volt Max Lithium-Ion 4-Tool Combo Kit 制造商:DEWALT 功能描述:12V MAX 4 TOOL KIT RECIP IMPACTOR DRILL LIGHT |
| DCK4A-CA | 制造商:Leviton Manufacturing Co 功能描述: |
| DCK590L2 | 制造商:Dewalt 功能描述:20V MAX Lithium Ion 5-Tool Combo Kit |
| DCK-703S | 制造商:SYNERGY 制造商全称:SYNERGY MICROWAVE CORPORATION 功能描述:POWER DIVIDERS 0ì : 3-WAY |
| DCK-7D3 | 制造商:SYNERGY 制造商全称:SYNERGY MICROWAVE CORPORATION 功能描述:POWER DIVIDERS 0ì : 3-WAY |
发布紧急采购，3分钟左右您将得到回复。