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穿心电容,馈通滤波器,信号滤波器

价格面议

简介
一、标称容量Capacitance :10pF,65pF,100pF,470pF,500pF,1000pF,1200pF,1500pF,1750pF,2000pF,2500pF,2700pF,3000pF,3300pF,4700pF,5000pF,5500pF,6800pF,7000pF,9000pF,10000pF,0.01F,0.012F,0.015F,0.018F,0.022F,0.025F,0.027F,0.028F,0.045F,0.050F,0.056F,0.075F,0.08F,0.1F,0
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一、 标称容量Capacitance :
10pF,65pF,100pF,470pF,500pF,1000pF,1200pF,1500pF,1750pF,2000pF,2500pF,2700pF,
3000pF,3300pF,4700pF,5000pF,5500pF,6800pF,7000pF,9000pF,10000pF,0.01μF,0.012μF,
0.015μF,0.018μF,0.022μF,0.025μF,0.027μF,0.028μF,0.045μF,0.050μF,
0.056μF,0.075μF,0.08μF,0.1μF,0.15μF,0.21μF,0.3μF,0.75μF,0.8μF,1μF,
0.015μF,0.060μF,0.062μF,0.150μF,0.200μF,0.250μF,0.250μF,0.300μF,0.450μF,0.500μF,
0.7μF,0.750μF,0.990μF,1.0μF,1.2μF,1.4μF,1.5μF,2.1μF,2.8μF,
4.0μF,5.2μF

101 100pF      331 330pF     471 470pF
102 1000pF     332 3300pF    472 4700pF 
103 10000pF    333 33000pF   473 47000pF
1000pF=1nF  1000000pF=1μF  1000nF=1μF 1μF=1000nF=1000000pF 1F=1000000μF
Code
Capacitance tolerance
Code
Capacitance tolerance
F
± 1pF
S
+ 50%, –20%
K
±10%
Z
+ 80%, –20%
M
±20%
P
+100%, – 0%
 
二、工作电流Rated Current :
0.06A,0.15A,0.25A,0.3A,0.45A,0.5A,1A,2A,3A,4A,5A,10A,15A,25A,50A,100A
三、额定电压Rated Voltage :
直流:5V,28V,35V,50V,60V,70V,80V,100V,150V,200V,250V,275V
      300V,330V,350V,400V,450V,500V,600V,750V,1250V,2500V
交流:70V,85V,90V,115V,125V,140V,200V,220V,230V,240V,330V,350V
四、耐电压Dielectric Withstanding Voltage :
直流:额定电压的2.5倍      交流:额定电压的6倍的直流电压
五、工作温度Working Temperature Range:
E:-10-+85 F:-25-+85 G:-30-+125
H:-40-+85 I:-55-+85 J:-55-+125
温度特征
电容变化
温度范围
SL
SL(0±30ppm/°C)
–25~+ 85°C
B
B(+10~ –10%)
D
D(+20~ –30%)
E
E(+20~ –55%)
F
F(+30~ –80%)
C
CG(+350~ –1000ppm/°C)
–55~+125°C
R
R(+15~ –15%)
 
六、EMI 滤波器的构成
滤波电容
  滤波器所用的电容一般为陶瓷电容。由于其物理结构,这种陶瓷电容又称为穿心式电容。
  穿心式电容自电感较普通电容小得多,故而自谐振频率很高。同时,穿心式设计,也有效
地防止了高频信号从输入端直接耦合到输出端。这种低通高阻的组合,在 1GHz 频率范围内,
提供了极好的抑制效果。
  最简单的穿心结构是由内外电极和陶瓷构成的一个( C 型)或两个电容( Pi 型)。
这种电容的容量可从 10pF ,工作电压可达 2000VDC 。管式穿心电容因为其同轴性,即使在
10GHz 频率,也不会产生明显的自谐振。
  穿心电容的介质为陶瓷介质,而陶瓷电容的容量会随环境温度变化而变化,这种容量变化
会影响滤波器的滤波截止率。陶瓷电容的容量温度变化率是由陶瓷介质本身决定的。因此,
选择适当的陶瓷介质非常重要。常见陶瓷介质及其容量温度变化率如下:
 
EIA 介质类别
COG(NP0)
X7R
Z5U
Y5V
超稳定
稳定
一般用途
工作温度范围
-55℃~+125℃
-55 ℃~+125 ℃
-10℃~+85 ℃
-30℃~+85℃
最大容量温度变化率
0±30ppm/℃
± 15 %
-22% ~+56 %
-22%~+82%
绝缘电阻 Ri
≥104mΩ
Cr ≤ 25nF Ri ≤ 4000MΩ
Cr ≤ 25nF Ri* ≤ 100S
损耗( tanб )
Cr>50pF≤0.015
Cr≤50pF≤0.015
15/Cr+0.7)
<0.025
<0.030
0.050
介质强度
工作电压
200V
500V
>1KV
施加工作电压的倍数(加压时间 5 秒,充电电流 50max )
X2.5
X2.5
X2.5
X2.5
X1.5
X1.5
X1.5
X1.5
X125
老化率10进对数时间
0
1 %
6 %
6 %
 
滤波电感
  滤波电感一般采用铁氧体材料,它可以方便地与穿心电容组合起来,形成复合滤波器,
在高性能滤波器中,也采用线绕电感。但需注意,铁氧材料在大电流下会发生磁饱和,
降低滤波器效能。
七、安装方式Filter Installation Style :
H:焊接式Solder-in Style Filters   I:螺栓式 Screw Threaded Style Filters
八、螺纹直径公制范围Thread Size :

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