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C2012X7R471KGAS

产品描述Ceramic Capacitor, Multilayer, Ceramic, 50V, 10% +Tol, 10% -Tol, X7R, -/+15ppm/Cel TC, 0.00047uF, 0805,
产品类别无源元件    电容器   
文件大小457KB,共31页
制造商达方(DARFON)
官网地址http://www.darfon.com.cn/
标准
达方电子为全球前二大的液晶电视背光模块变频器 (LCD TV Inverter)与全球前二大的笔记型电脑键盘 (Notebook Keyboard)制造商。达方电子创立于 1997年,秉持「平实务本、追求卓越、关怀社会」的企业文化,与「光电与精密元件的专家」的定位,专注于周边元件、电源元件、与整合元件的研发与产品服务。
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C2012X7R471KGAS概述

Ceramic Capacitor, Multilayer, Ceramic, 50V, 10% +Tol, 10% -Tol, X7R, -/+15ppm/Cel TC, 0.00047uF, 0805,

C2012X7R471KGAS规格参数

参数名称属性值
是否Rohs认证符合
Objectid939010231
包装说明, 0805
Reach Compliance Codecompliant
ECCN代码EAR99
电容0.00047 µF
电容器类型CERAMIC CAPACITOR
介电材料CERAMIC
高度0.85 mm
JESD-609代码e3
长度2 mm
多层Yes
负容差10%
端子数量2
最高工作温度125 °C
最低工作温度-55 °C
封装形式SMT
包装方法TR, Paper, 13 Inch
正容差10%
额定(直流)电压(URdc)50 V
系列C(SIZE)X5R/X7R
尺寸代码0805
温度特性代码X7R
温度系数15% ppm/°C
端子面层Matte Tin (Sn) - with Nickel (Ni) barrier
宽度1.25 mm

C2012X7R471KGAS文档预览

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Electronics Corp.
Multi-Layer Ceramic Capacitor
C-G1-7-00
G1
General Specification
General introduction:
Ceramic capacitors (or condenser) are widely used in electronic circuitry for coupling, de-coupling and in filters.
These different functions require specific capacitor properties. Ceramic capacitors can be divided into two classes,
Class 1
In these capacitors dielectric materials are used which have a very high specific resistance, very good Q and linear
temperature dependence.
They are used in such applications as oscillators and filters where low losses, capacitance drift compensation and
high stability are required.
Class 2
These capacitors have higher losses and have non-linear characteristics. They are used for coupling and
de-coupling.
Construction:
The capacitance of a ceramic capacitor depends on the area of the electrodes (A), the thickness of the ceramic
dielectric (t) and the dielectric constant of the ceramic material (ε
r
) ; and on the number of dielectric layers (n) with
multi-layer ceramic capacitors :
C =ε
r
ε
0
A/t
n
The standard capacitance unit is the “Farad”. A capacitor has capacitance of one farad is when one coulomb charges
two parallel conductive plate to one volt potential.
The rated voltage is dependent on the dielectric strength, which is mainly governed by the thickness of the dielectric
layer and the ceramic structure. For this reason a reduction of the layer thickness is limited. Figure 1 shows the
construction of a multi-layer capacitor.
The electrodes are normally mixed palladium with silver since the electrodes are applied before the ceramic is fired
at a temperature where silver would oxidize.
Manufacturing of ceramic capacitors
The raw materials are finely milled and carefully mixed. Thereafter the powders are calcined at temperatures
between 1100℃ and 1300℃ to achieve the required chemical composition.
Then, the resultant mass is reground and dopes and/or sintering means are added.
The finely ground material is mixed with a solvent and binding matter. Casting or rolling obtains thin sheets. For
multi-layer capacitors electrode material is printed on the sheets and after stacking and pressing of the sheets
co-fired with the ceramic compact at temperatures between 1000℃ and 1400℃.
The totally enclosed electrodes of a multi-layer capacitor guarantee good life test behavior as well.
Darfon Product Specification
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