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 330pF471 470pF
102 1000pF332 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 +, – 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。
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：
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