穿心�電容,是一種三端電�,因其空心的物理�(jié)�(gòu)而得名。屏蔽腔體輸出或輸入的低頻信�(hào)(包�電源�,經(jīng)過穿心式電容接�(jìn)�,可以過濾掉一部分帶�(jìn)來的噪聲,因�,穿心式電容在很多專用高�、超高頻、微波設(shè)備中大量使用�
濾波器中采用的穿心式電容一般為陶瓷電容�
穿心式電�,其電感較普通電容小得多,故而自諧振頻率很高;同�(shí),由于其采用穿心式的安裝方式,也有效地防止了高頻信號(hào)從輸入端直接耦合到輸出端,因�,這種低通高阻的組合,在 1GHz 頻率范圍�(nèi),提供了極好的抑制效果�
穿心電容主要�(yīng)用于�,饋通濾波器,低通濾波器,EMI濾波�,信號(hào)濾波�,濾波電容�,焊接式饋通濾波器,螺紋式饋通濾波器,樹脂密封濾波�,玻璃密封高性能濾波� �(biāo)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,
其中1000pF=1nF 1000000pF=1μF 1000nF=1μF 1μF=1000nF=1000000pF 1F=1000000μF
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
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
耐電壓Dielectric Withstanding Voltage �
直流:額定電壓的2.5� 交流:額定電壓的6倍的直流電壓
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�
EMI 濾波器的�(gòu)�
濾波電容
濾波器所用的電容一般為陶瓷電容。由于其物理�(jié)�(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�(shí),穿心式�(shè)�(jì),也有效地防止了高頻信號(hào)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�(nèi),提供了極好的抑制效��
最簡單的穿心結(jié)�(gòu)是由�(nèi)外電極和陶瓷�(gòu)成的一�(gè)� C 型)或兩�(gè)電容� Pi 型)�
這種電容的容量可� 10pF ,工作電壓可�(dá) 2000VDC 。管式穿心電容因?yàn)槠渫S�,即使在 10GHz 頻率,也不會(huì)�(chǎn)生明顯的自諧��
濾波電感
濾波電感一般采用鐵氧體材料,它可以方便地與穿心電容組合起來,形成復(fù)合濾波器,在高性能濾波器中,也采用線繞電感。但需注意,鐵氧材料在大電流下�(huì)�(fā)生磁飽和,降低濾波器效能�
安裝方式Filter Installation Style �
H:焊接式Solder-in Style Filters I:螺栓式 Screw Threaded Style Filters
螺紋直徑公制范圍Thread Size �
M3,M4,M5,M6,M8,M9