穿心電容饋通濾波器低通電容介紹

日期：2025-11-23 03:48

瀏覽次數(shù)：3445

摘要：穿心電容,饋通濾波器,低通濾波器,EMI濾波器,信號濾波器,濾波電容器焊接式饋通濾波器,螺紋式饋通濾波器,樹脂密封濾波器,玻璃密封高性能濾波器一、標稱容量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,0.1μ...

穿心電容,饋通濾波器,低通濾波器,EMI濾波器,信號濾波器,濾波電容器

焊接式饋通濾波器,螺紋式饋通濾波器,樹脂密封濾波器,玻璃密封高性能濾波器

穿心電容饋通濾波器低通電容介紹

一、標稱容量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、工作電流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、額定電壓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、耐電壓Dielectric Withstanding Voltage ：

直流：額定電壓的2.5倍交流：額定電壓的6倍的直流電壓

五、工作溫度Working Temperature Range：

E：-10-+85℃ F：-25-+85℃ G：-30-+125℃

H：-40-+85℃ I：-55-+85℃ J：-55-+125℃

溫度特征	電容變化	溫度范圍
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%)	–55~+125°C

六、EMI 濾波器的構(gòu)成

濾波電容
濾波器所用的電容一般為陶瓷電容。由于其物理結(jié)構(gòu)，這種陶瓷電容又稱為穿心式電容。
穿心式電容自電感較普通電容小得多，故而自諧振頻率很高。同時，穿心式設(shè)計，也有效
地防止了高頻信號從輸入端直接耦合到輸出端。這種低通高阻的組合，在 1GHz 頻率范圍內(nèi)，
提供了極好的抑制效果。
*簡單的穿心結(jié)構(gòu)是由內(nèi)外電極和陶瓷構(gòu)成的一個（ C 型）或兩個電容（ Pi 型）。
這種電容的容量可從 10pF ，工作電壓可達 2000VDC 。管式穿心電容因為其同軸性，即使在
10GHz 頻率，也不會產(chǎn)生明顯的自諧振。

穿心電容的介質(zhì)為陶瓷介質(zhì)，而陶瓷電容的容量會隨環(huán)境溫度變化而變化，這種容量變化
會影響濾波器的濾波截止率。陶瓷電容的容量溫度變化率是由陶瓷介質(zhì)本身決定的。因此，
選擇適當?shù)奶沾山橘|(zhì)非常重要。常見陶瓷介質(zhì)及其容量溫度變化率如下：

EIA 介質(zhì)類別		COG（NP0）	X7R	Z5U	Y5V
EIA 介質(zhì)類別		超穩(wěn)定	穩(wěn)定	一般用途
工作溫度范圍		-55℃~+125℃	-55 ℃~+125 ℃	-10℃~+85 ℃	-30℃~+85℃
*大容量溫度變化率		0±30ppm/℃	± 15 %	-22% ~+56 %	-22%~+82%
絕緣電阻 Ri		≥104mΩ	Cr ≤ 25nF Ri ≤ 4000MΩ Cr ≤ 25nF Ri* ≤ 100S
損耗（ tanб ）		Cr>50pF≤0.015 Cr≤50pF≤0.015 （15/Cr+0.7）	<0.025	<0.030	0.050
介質(zhì)強度	工作電壓 200V 500V >1KV	施加工作電壓的倍數(shù)（加壓時間 5 秒，充電電流 50max ）
		X2.5	X2.5	X2.5	X2.5
		X1.5	X1.5	X1.5	—
		X1.5	X125	—	—
老化率10進對數(shù)時間		0	1 %	6 %	6 %

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