ST203C107MAJ05 AVX Corporation, ST203C107MAJ05 Datasheet - Page 81

• Manufacturer Part Number: ST203C107MAJ05
• Description: CAP CER 100UF 25V STACKED SMD
• Manufacturer: AVX Corporation
• Series: TurboCap™r

Specifications of ST203C107MAJ05

• Capacitance: 100µF
• Tolerance: ±20%
• Temperature Coefficient: X7R
• Voltage - Rated: 25V
• Mounting Type: Surface Mount, MLCC
• Operating Temperature: -55°C ~ 125°C
• Features: Stacked
• Applications: Filtering Switch Mode Power Supplies
• Package / Case: 10-Stacked SMD, J-Lead
• Size / Dimension: 0.525" L x 0.300" W (13.34mm x 7.62mm)
• Thickness: 5.59mm Max
• Lead Style: J-Lead
• Voltage Rating: 25 Volts
• Operating Temperature Range: - 55 C to + 125 C
• Product: General Type MLCCs
• Dielectric Characteristic: X7R
• Capacitance Tolerance: ± 20%
• Capacitor Case Style: DIP
• No. Of Pins: 10
• Capacitor Mounting: SMD
• Rohs Compliant: No
• Termination Style: Radial
• Lead Spacing: 6.35 mm
• Dimensions: 7.62 mm W x 13.34 mm L x 5.59 mm H
• Dissipation Factor Df: 2.5
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Ratings: -
• Lead Spacing: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 478-6116

General Description
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:
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
(10
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:
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:
where
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.
80
.224 = conversion constant
-9
) or pico (10
dV/dt = Slope of voltage transition across capacitor
C = capacitance (picofarads)
K = dielectric constant (Vacuum = 1)
A = area in square inches
t = separation between the plates in inches
C = Capacitance
E = energy in joules (watts-sec)
V = applied voltage
C = capacitance in farads
(thickness of dielectric)
(.0884 for metric system in cm)
I = Current
-12
) farad level.
I
ideal
C = .224 KA
E =
= C dV
1
dt
⁄
2
CV
t
2
-6
), nano
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:
Reactance – Since the insulation resistance (R
normally very high, the total impedance of a capacitor is:
where
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 iden-
tical in value. In a “perfect” capacitor the current in the
capacitor will lead the voltage by 90°.
In practice the current leads the voltage by some other
phase angle due to the series resistance R
ment of this angle is called the loss angle and:
for small values of
which has led to the common interchangeability of the two
terms in the industry.
R
C = Capacitance
s
= Series Resistance
X
R
X
Z = Total Impedance
C
L
Z =
s
Loss
Angle
L
Power Factor (P.F.) = Cos
Dissipation Factor (D.F.) = tan
= Series Resistance
= Capacitive Reactance =
= Inductive Reactance
I (Ideal)
R
2
S
+ (X
the tan and sine are essentially equal
IR
C
I (Actual)
- X
f
R
s
S
L
)
2
R
Phase
Angle
L = Inductance
p
f
= Parallel Resistance
= 2 π fL
or Sine
2 π fC
1
R
C
S
. The comple-
P
V
p
) is