Datasheet > 12062R104M8BB0G

12062R104M8BB0G

更新时间： 2023-01-02 23:01:36

品牌	Logo	应用领域
国巨 - YAGEO		/
页数	文件大小	规格书
14页	272K
描述
Feed Through Capacitor, 1 Function(s), 25V, EIA STD PACKAGE SIZE 1206, 4 PIN

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12062R104M8BB0G 数据手册

Phycomp

Product specification

Surface-mount ceramic

multilayer capacitors

Class 2, X7R 16/25/50 V

feedthrough

HIGH FREQUENCY BEHAVIOUR OF MULTILAYER CHIP CAPACITORS

Multilayer chip capacitors (MLCCs) are suitable for use at

high frequencies. At frequencies below the series

resonance frequency, the MLCC can be represented by an

equivalent circuit as shown in Fig.9.

At the SRF, the MLCC will appear as a small resistor.

The transmission loss through the MLCC at this series

resonance frequency will be low.

Using the values of C, L = 1 nH and the ESR at a specific

frequency (f), two often used quantities can be derived.

In general, the quantities C, ESR and L are frequency

dependent. For most applications, C and L can be

regarded as frequency independent below 1 GHz.

The impedance (Z) is given by:

1 – (2πf)²LC

Z =

+ ESR

------------------------------------

The equivalent series self-inductance L is:

2jπfC

• Independent of the dielectric material.

The quality factor (Q) is given by:

• Dependent on the size of the capacitor, it increases with

increasing length and decreases with increasing width

or thickness of the product.

1 – (2πf)²LC

Q =

--------------------------------------

2πfESRC

• The value of L is approximately:

– 0.6 nH for case size 0603

– 1 nH for case sizes 0805, 1206 and 1210

– 1.5 nH for case sizes 1812 and 2220.

ESR

MEA609

These figures are accurate to within 20%.

Because of the inductance L, associated with the MLCC,

there will be a frequency at which the inductive reactance

will be equal to the reactance of the capacitor.

C = capacitance.

ESR = equivalent series resistance which is determined by the

energy dissipation mechanisms (in the dielectric material as well

as in the electrodes).

This is known as the series resonance frequency (SRF)

and is given by:

L = equivalent series self-inductance.

SRF =

-------------------

Fig.9 Equivalent series representation of an MLCC.

2π LC

2001 May 30 Rev.3

www.phycomp-components.com

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