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參數(shù)資料
| 型號： | 08055C103JA74A |
| 廠商： | AVX Corporation |
| 英文描述： | General Specifications |
| 中文描述： | 一般規(guī)格 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 338K |
| 代理商： | 08055C103JA74A |
55
Effects of Mechanical Stress – High “K” dielectric
ceramic capacitors exhibit some low level piezoelectric
reactions under mechanical stress. As a general statement,
the piezoelectric output is higher, the higher the dielectric
constant of the ceramic. It is desirable to investigate this
effect before using high “K” dielectrics as coupling capaci-
tors in extremely low level applications.
Reliability – Historically ceramic capacitors have been one
of the most reliable types of capacitors in use today.
The approximate formula for the reliability of a ceramic
capacitor is:
L
o
=
V
t
X
T
t
Y
L
t
V
o
T
o
where
Lo = operating life
Tt = test temperature and
Lt = test life
To = operating temperature
Vt = test voltage
in °C
Vo = operating voltage
X,Y = see text
Historically for ceramic capacitors exponent X has been
considered as 3. The exponent Y for temperature effects
typically tends to run about 8.
A capacitor is a component which is capable of storing
electrical energy. It consists of two conductive plates (elec-
trodes) separated by insulating material which is called the
dielectric. A typical formula for determining capacitance is:
C =
.224 KA
t
C = capacitance (picofarads)
K = dielectric constant (Vacuum = 1)
A = area in square inches
t = separation between the plates in inches
(thickness of dielectric)
.224 = conversion constant
(.0884 for metric system in cm)
Capacitance – The standard unit of capacitance is the
farad. A capacitor has a capacitance of 1 farad when 1
coulomb charges it to 1 volt. One farad is a very large unit
and most capacitors have values in the micro (10-6), nano
(10-9) or pico (10-12) farad level.
Dielectric Constant – In the formula for capacitance given
above the dielectric constant of a vacuum is arbitrarily cho-
sen as the number 1. Dielectric constants of other materials
are then compared to the dielectric constant of a vacuum.
Dielectric Thickness – Capacitance is indirectly propor-
tional to the separation between electrodes. Lower voltage
requirements mean thinner dielectrics and greater capaci-
tance per volume.
Area – Capacitance is directly proportional to the area of
the electrodes. Since the other variables in the equation are
usually set by the performance desired, area is the easiest
parameter to modify to obtain a specific capacitance within
a material group.
Energy Stored – The energy which can be stored in a
capacitor is given by the formula:
E = 12CV
2
E = energy in joules (watts-sec)
V = applied voltage
C = capacitance in farads
Potential Change – A capacitor is a reactive component
which reacts against a change in potential across it. This is
shown by the equation for the linear charge of a capacitor:
I
ideal =
C
dV
dt
where
I = Current
C = Capacitance
dV/dt = Slope of voltage transition across capacitor
Thus an infinite current would be required to instantly
change the potential across a capacitor. The amount of
current a capacitor can “sink” is determined by the above
equation.
Equivalent Circuit – A capacitor, as a practical device,
exhibits not only capacitance but also resistance and
inductance. A simplified schematic for the equivalent circuit
is:
C = Capacitance
L = Inductance
Rs = Series Resistance
Rp = Parallel Resistance
Reactance – Since the insulation resistance (Rp) is normal-
ly very high, the total impedance of a capacitor is:
Z =
R2
S + (XC - XL )
2
where
Z = Total Impedance
R
s = Series Resistance
X
C = Capacitive Reactance
=
1
2
π fC
X
L = Inductive Reactance
= 2
π fL
The variation of a capacitor’s impedance with frequency
determines its effectiveness in many applications.
Phase Angle – Power Factor and Dissipation Factor are
often confused since they are both measures of the loss in
a capacitor under AC application and are often almost
identical in value. In a “perfect” capacitor the current in the
capacitor will lead the voltage by 90°.
General Description
R
L
R
C
P
S
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| 08055C103JAT2A | 功能描述:多層陶瓷電容器MLCC - SMD/SMT 0805 0.01uF 50volts X7R 5% RoHS:否 制造商:American Technical Ceramics (ATC) 電容:10 pF 容差:1 % 電壓額定值:250 V 溫度系數(shù)/代碼:C0G (NP0) 外殼代碼 - in:0505 外殼代碼 - mm:1414 工作溫度范圍:- 55 C to + 125 C 產(chǎn)品:Low ESR MLCCs 封裝:Reel |
| 08055C103JAT2A | 制造商:AVX Corporation 功能描述:CAPACITOR 制造商:AVX Corporation 功能描述:CAPACITOR CERAMIC 0.01UF, 50V, X7R, 5%, 0805 |
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| 08055C103JAT2M | 功能描述:CAP CER 10000PF 50V 5% X7R 0805 RoHS:是 類別:電容器 >> 陶瓷 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- 電容:1000pF 電壓 - 額定:50V 容差:±10% 溫度系數(shù):X7R 安裝類型:表面貼裝，MLCC 工作溫度:-55°C ~ 125°C 應(yīng)用:自動 額定值:AEC-Q200 封裝/外殼:0805（2012 公制） 尺寸/尺寸:0.079" L x 0.047" W（2.00mm x 1.20mm） 高度 - 座高（最大）:- 厚度（最大）:- 引線間隔:- 特點:- 包裝:帶卷 (TR) 引線型:- |
| 08055C103JAT4A | 功能描述:多層陶瓷電容器MLCC - SMD/SMT 0805 0.01uF 50volts X7R 5% RoHS:否 制造商:American Technical Ceramics (ATC) 電容:10 pF 容差:1 % 電壓額定值:250 V 溫度系數(shù)/代碼:C0G (NP0) 外殼代碼 - in:0505 外殼代碼 - mm:1414 工作溫度范圍:- 55 C to + 125 C 產(chǎn)品:Low ESR MLCCs 封裝:Reel |
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