芯片电容器

1.1  概述 Overview

1.1.1  产品的特性 Features

随着无线技术的迅速发展，工作频率的不断升高，对元器件的小型化要求越来越高。由于芯片电容器具有以下特点，因此该产品非常适合对频率、便携性要求高的无线应用领域。

With the raid advancements in wireless technology ,greater emphasis is being placed on the working frequency and the miniaturization of the components . The Capacitors are an excellent choice for wireless applications benefited from the following features .

u 陶瓷介质，强度高，耐高温

Ceramic dielectrics ,high dielectric strength ,high temperature resistance

u  结构简单（MIM电容器结构），性能稳定可靠

  Robust simple structure ( MIM Capacitor)

u 多种金属体系可选择，适合微组装工艺（如金丝键合）

Multiple metal system options  , fit to micro-assembly such as gold bonding

u 适合Au/Sn、 Au/Si、 Au/Ge 共晶焊，以及导电胶粘连

Fit to Au/Sn、 Au/Si、 Au/Ge eutectic , epoxy attachment method

u 低温度变化率、低损耗、高Q值

Ultra stable with temperature , low dissipative losses , extremely high Q

1.1.2产品运用 Applications

u 耦合（隔直）电容  DC Block(coupling)

耦合隔直用电容作用是把射频能量从电路的一部分转移到另一部分，能量损失最小。

Capacitors used in coupling and dc blocking applications serve to couple RF energy with the minimal energy wasting from one part of a circuit to another.

u 旁路电容（去耦）Bypass (decoupling)

旁路电容的作用是提供一条低阻抗射频接地通道，旁路电容越多，其可靠性越差。

Capacitors with low impedance used in bypass application serve to carry RF energy from a specific point the circuit to the ground . The more the number of the capacitors used

in bypass application are , the worse the reliability of the circuit becomes.

u 匹配电容

匹配电容是用来实现信号传输线路上，阻法满足特定要求（如50欧姆系统匹配）而设计的电容。

The impedance matching application is to use the capacitors to provid the required impedance at a point in a circuit.

2.1.3基本参数 Basic Parameters

u 标称电容量 Nominal Capacitance

² 测量温度  Testing Temperature:25±3℃

² 测量信号  Testing Signal:1Vrms, 1MHz(Cp≤100pF)或or 1KHz(Cp>100pF)

² 容量标识  Capacitance Representation

电容量的标识一般采用三个字符来表示容量。字母R代表小数点的位置，如果三位字符均为数字时，末尾数字代表0的个数。

Three characters are used to denote the capacitance . The letter R represents the location of the decimal point . If the three characters are all figures , the last figure represents the count of the zero .

e.g.3R5=3.5pF, 0R5=0.5pF,470=47pF,102=1000pF

u 电容量精度  Capacitance Tolerance

   相对标称值允许的误差，以%表示；小容量时，以±⊿C表示。

        The allowable tolerance relative to nominal capacitance used in % for larger capacitance and ±⊿C for little capacitance.

★ TABLE 2-1容量精度代码表Capacitance tolerance code

u 工作电压  DC Working Temperature

   确保电容器长期安全运作的电压

   The working voltage can ensure safe work for long ­term of the capacitor.

u 绝缘电阻 IR

测量条件 Testing Condition：工作电压 Operating Voltage ,5-30s

最小绝缘电阻Min IR：请参见陶瓷介质表Listed on EIELETRIC TABLE,P4

u 介质损耗DF

   测量温度  Testing Temperature:25±3℃

   测量信号  Testing Signal:1Vrms, 1MHz(Cp≤100pF)或or 1KHz(Cp>100pF)

  损耗范围DF Range：请参见陶瓷介质表Listed on EIELETRIC TABLE,P4

u 工作温度范围 Working temperature range:-55℃-+125℃

u 电容温度系数或电容量变化率Temperature Coefficient or Rate of Temperature Change:

   在工作温度范围内，电容量变化以25℃为基准。

The capacitance change an be determined by measurement of the capacitance change at various temperatures from reference room temperature (25℃)within the operating temperature range.

1.1.4陶瓷介质Ceramic dielectric

u 陶瓷介质表 DIELECTRIC TABLE TABLE 2-2

注：C≤100 pF时，电容量及损耗的测试频率为1MHz；C＞100 pF时，电容量及损耗的测试频率为1KHz。

apacitor

2.2.1特性 Features

u 最高使用频率 Max Working frequency:100GHz

u 最小尺寸 Min Size:0.200mm×0.200mm

u 容量范围  Capacitance range: 0.2pF-10000pF

u 工作温度范围  Working temperature range:-55℃-+125℃

1.2.2外型结构  Type

★ TABLE2-5电容产品代码  Type code

1.2.3产品编号  Part Number Code

1.2.4选型指导  Selection Guide

★ 常用规格型号推荐表 Recommended Table for Common Specifications

1.3表面贴装型芯片电容器Series Chip Capacitors

1.3.1特性 Features

u 最高使用频率  Max  working frequency:40GHz

u 表面贴装型，免除金丝键合  SMT mode capacitor ,avoid wire bonding

u 容量范围  Capacitance range:0.01pF-2000pF

u 工作温度范围   Working temperature range:-55℃-+125℃

2.3.2外形结构、等效电路图、安装示意图

   Type mode ,Equivalent schematic circuit and Mounting Diagram

1.3.3产品编号  Part Number Code

2.3.4选型指导  Selection  Guide

★ TABLE2-7 常用规格型号推荐表 Recommended Table for Common Specifications

1.4 阵列型芯片电容器  Multiple Value Chip Capacitors

1.4.1 特性  Features

u 降低芯片贴装面积  Reduce capacitor mounting area

u 降低成本  Reduce costs

u 单容量范围  Single capacitance range:0.1pF-1000pF

u 工作温度范围  Working temperature range:-55℃-+125℃

1.4.2 外形结构及等效电路图  Type mode ,Equivalent schematic circuit

1.4.3产品编号  Part Number Code

注：此款产品尺寸代码为四位，前两位为产品宽度代码，后两位为产品电极数；如2506 表示此产品宽度为25（0.635mm），长度方向有6个电极。

1.4.4选型指导  Selection  Guid

★ TABLE 2-8  常用规格型号推荐表 Recommended Table for Common Specifications