片式多层陶瓷电容器(MLCC)是适合于表面贴装技术

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
Ceramic powders, which formulation and crystal phase fitted the
2
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
demand of designing, are carefully mixed with solvent and binder, and then finely milled as slurry. The very thin green sheets can be obtained by casting or spraying the slurry. After this, electrode is printed on the sheets which then be stacked, pressed and cut into chips. The green chip is co-fired at temperatures between 1000 and 1400℃ to become a monolithic block. The final product can be formed by metalizing the termination of the compact ceramic chip.
包装代码 Packaging Code
T:纸带包装(7 英寸胶盘) T: Paper tape reel 180mm (7inch)
H:纸带规格(7 英寸胶盘) H: Paper tape reel 180mm (7 inch)
P:胶带规格(7 英寸胶盘) P: Plastic tape reel 180mm (7 inch)
C:塑料盒散包装
C: Bulk cassette
厚度代码 Thickness Code
表示产品厚度,见产品电容量范围与厚度规格表。对于 0201、0402、0603
等规格只有一种厚度时,该项可以空缺。
产品范围、尺寸、厚度 Product Range、Size & Thickness
类别 2 类陶瓷介质 MLCC / Class2
尺寸代码
GB/IEC/EI 长度
A L/mm
( JIS/EIA
宽度 W/mm
厚度(最小值/最 端头宽度(最小值/
大值)
最大值)
H(Min/Max)/mm L1(Min/Max)/mm
J)
0201 (0603)
0.6±0.0 0.3±0.0
0.27/0.33
3
3
0.10/0.20
0402 (1005)
A:纸带包装(13 英寸胶盘) A: Paper tape reel 330mm (13 inch)
7
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
E:胶带规格(13 英寸胶盘) E: Plastic tape reel 330mm (13 inch)
B:散包装
B: Brick, Loosed in bag
1
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
电容器、铝电解电容器。 MLCC can be divided into two classes:
Class 1 Dielectrics are used with very high Q and linear temperature coefficient in these capacitors. They can be distinguished into temperature compensating type and temperature stable type. They can be used in such applications as oscillators and filters where low losses, low capacitance drift or temperature compensation and high stability are required. Class 2 These capacitors have a very high capacitance per volume and non-linear temperature characteristics. They are used for by-passing, coupling, filter and de-coupling. For instance, they can be substituted for the Ta, Al electrolytic capacitors in DC-DC(AC) converters and switching power suppliers.
1.0±0.0 0.5±0.0
0.45/0.55
5
5
0.15/0.35
0603 (1608)
1.6±0.1 0.8±0.1
0.70/0.90
0
0
0.20/0.60
5
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
1.25±0. 0.75/1.35
0805
2.0±0.2 20
digit specifies
the number of zeros.
(Example:104=100000pF; 4R7=4.7pF;0R5=0.5pF;)
标称电容量的允许偏差代码 Tolerance Code
B:±0.1pF
F:±1%
K:±10%
C:±0.25pF
G:±2%
M:±20%
D:±0.5pF
█ MLCC 的制造工艺 将化学组成和微观晶相结构符合设计要求的陶瓷原粉和有机粘合剂进行充分 混合成为陶瓷料浆,通过流延或喷涂等方式制得所需厚度的生坯膜片。在膜片 上印刷内电极后进行叠压、切割成为单个电容器生坯后于 1000℃—1400℃之 间进行多层共烧,在所得瓷坯两端进行端电极金属化处理后即制成 MLCC 成品。 最后经电性能测试和检验合格,即可包装入库,并交付使用。 Manufacture process of MLCC
C 表示片式多层陶瓷电容器 MLCC
尺寸规格 Size Type Code
(GB/IEC/EIA 代码)
0201;0402;0603;0805;1206;1210
温度系数或温度特性 T. C.
C0G/C0H/NPO: 0±30ppm/℃ /0±60ppm/℃
-55℃ ~ +125℃
X7R:
±15%
-55℃ ~ +125℃
█ MLCC 的结构 MLCC 的电容量与内电极交叠面积 A、介质层数 n 和陶瓷介质材料的相对介电常 数 εr 呈正比,与单层介质厚度 T 呈反比关系。
C = εr×ε0×A×n / T
额定工作电压主要依赖于介质材料抗电强度、介质厚度以及电容器的结构设 计。 如图 1 所示。 Structure of MLCC
CLASS
TC Y5V
尺寸
规格 0402
0603
0805
1206
J:±5%
Z:+80/-20%
额定电压代码 Rate Voltage Code
表示额定电压(单位:V),前两位数码为有效数字,后一位数码为 10 的幂数;
6R3=6.3V;100=10V;160=16V;250=25V;500=50V;101=100V
端电极类型 Termination
N 表示 Ag(或 Cu)/Ni/Sn 三层结构(Nickel Barrier);S 表示全银端头(Silver);
X5R:
±15%
-55℃ ~ +85℃
Y5V:
+22/-82%
-30℃ ~ +85℃
标称电容量代码 Capacitance Code
6
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
表示标称电容量(单位:pF),前两位数码为有效数字,后一位数码为 10 的幂
数;
当标称电容量小于 10pF 时,以字母 R 表示小数点;
3
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
C = εr×ε0×A×n / T
The rated voltage depends on the structure of the device, the thickness and strength of the dielectric Figure 1 shows the structure of a multi-layer capacitor.
▉ MLCC 的分类: 根据所采用陶瓷介质材料的类型,MLCC 可划分为两大类: 1 类陶瓷介质 MLCC 具有极高的稳定性,其电容量几乎不随时间、交流信号、外加直流偏压的变化 而改变,同时具有极低介质损耗,即高 Q 值。适用于对容量精度和应用频率要 求较高的谐振电路。根据电容量的温度系数又可分为温度稳定型与温度补偿型 两种。、 2 类陶瓷介质 MLCC 具有很高的比体积电容量,适合用于旁路、耦合、滤波以及对容量稳定性要求 不高的鉴频电路。在 DC-DC(AC)变换器和开关电源滤波电路正逐步取代钽电解
结构与外形尺寸 Structure & Dimension
陶瓷介质 内电极
Ceramic Dielectric Electrode
锡 Sn 镍 Ni
银/铜 Ag/Cu
L1
L2
4
EYANG TECHNOLOGY DEVELOPMENT CO ., ,LTD
W
H
L
图 1 片式多层陶瓷电容器外形与内部结构 Figure 1 Dimension and Cross-section of MLCC
The capacitance of a MLCC depends on the area of the electrodes (A), the thickness of the ceramic dielectric (T) and the dielectric constant of the ceramic material (εr) , and the number of dielectric layers (n) with multi-layer ceramic capacitors:
如:104=100000pF;4R7=4.7pF;0R5=0.5pF;
The capacitance code is expressed in pico-farads and identified by a
three-digit
number. The first two digits represent significant figures. The last
简介 Brief Introduction
▉ MLCC 简介: 片式多层陶瓷电容器(MLCC)是适合于表面贴装技术(SMT)的小尺寸、高
比容、高精度陶瓷介质电容器,可贴装于印刷线路板(PCB)、混合集成电路(HIC)பைடு நூலகம்基片,有效地缩小电子信息终端产品(尤其是便携式产品)的体积和重量,提 高产品可靠性。顺应了 IT 产业小型化、轻量化、高性能、多功能的发展方向。
General Introduction Multi-layer ceramic chip capacitor is a kind of ceramic dielectric capacitor with small size, high capacitance per volume, high accuracy, suited surface mounted technology (SMT). It is widely used in electronic circuitry, mounted printed circuit board, and hybrid IC. These different functions require specific capacitor properties.
(2012) 0
+0.30
1.25
1.15/1.55
-0.10
1206 (3216)
3.2±0.2 1.6±0.2
0.50/1.80
0
0
0.25/0.75 0.25/0.75
产品型号规格及代码定义 Part Number System
C 0402 C0G 101 J 500 N
TB
产品代码 Product Code
相关文档
最新文档