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| 型号： | 1206CG221K9B20F |
| 元件分类： | 数据传输滤波器 |
| 英文描述： | 1 FUNCTIONS, 50 V, FEED THROUGH CAPACITOR |
| 封装： | EIA STD PACKAGE SIZE 1206 |
| 文件页数： | 11/11页 |
| 文件大小： | 221K |
| 代理商： | 1206CG221K9B20F |
2001 May 30 Rev.3
9
www.phycomp-components.com
Phycomp
Product specification
Surface-mount ceramic
multilayer capacitors
Class 1, NP0 50 V
feedthrough
Figures 9 and 10 show the comparative inductance of a conventional MLCC and an FTC, when the capacitor is mounted
on a substrate. The high frequency capability of the FTC is better than a conventional MLCC due to the inductance of an
FTC being less than the MLCC.
Fig.8
Impedance of FTC as a function of frequency.
handbook, full pagewidth
102
103
10
104
1
101
CCB962
106
108
109
1010
107
f (Hz)
Z
(
)
47 pF 100 pF 220 pF
330 pF 470 pF
1 nF
Fig.9 Inductance of LMCC.
handbook, halfpage
L3
L1
L2
C1
L3
CCB963
Fig.10 Inductance of FTC.
handbook, halfpage
L3
C1
L3
L1
L2
CCB964
The equivalent circuits show parasitic inductances L1, L2 and L3. The resonance frequency (fr) can be determined as
follows:
(Lg = inductance between signal through line and GEN).
The inductance of the FTC (LgFTC = L3//L3 =
) is one quarter that of the MLCC (LgCMC =L3+L3 =L3
× 2).
f
r
1
2
π L
g
C1
×
--------------------------------
=
L3
2
-------
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