MKP18444684001 [VISHAY]
CAP FILM 0.68UF 400VAC RADIAL;
| 型号： | MKP18444684001 |
| 厂家： | 
VISHAY |
| 描述： | CAP FILM 0.68UF 400VAC RADIAL |
| 文件： | 总10页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
General Technical Information
Vishay Roederstein
Radio Interference Suppression Capacitors
Introduction
RADIO INTERFERENCE SUPPRESSION
1. Origin and Spreading of Interference:
There are two main sources of radio interference:
B
A/2
A/2
G
• Devices, which due to their construction produce RF
energy. These include generators for use in industry,
medicine and science, as well as oscillators, radio
and TV receivers etc.
B
• Devices, which produce a wide spectrum of
frequencies, due to rapid variations in electrical
current intensity. These include devices with switching
components, thyristors, triacs, commutators and
similar.
A
A) Asymmetrical Terminal
Voltage/Current
B) Symmetrical Terminal
Voltage/Current
Interference from source to receiver is spread in three ways:
alonwiring
by coupling, and
by radiation
Interference Voltage
Interference Power
100
90
dB
(µV)
To frequencies of 30MHz approximately, interference is
spread mainly along the installed electrical wiring. In this
range inductive and capacitive coupling also occurs between
the wiring and other metal parts of the devices acting as
supports of interference transfer.
80
70
65
60
56
50
45
40
55
Frequencies higher than 30MHz are spread by radiation
since interference source dimensions and terminal wiring
are in order of size to the wave length of the radiated
interference. The metal parts therefore act as antennas.
30
20
0.1
0.5
1
5
10
30
100
300
The device connected to the mains supply produces two
kinds of interference currents, running along wiring as seen
in figure A.
MHz
Symmetrical interference current B runs in different
directions in the phase and neutral wires.
2. Maximum Permitted Interference Limits:
Asymmetrical interference current A runs in the same
direction in both leads and ends in the same device via the
earthing connection. An earthing connection can either be
an earthing wire or capacitance between the device and
the surrounding.
In order to guarantee good operation of communicational
and other equipment, radio interference must be tolerably
limited. Interference produced from the source are
measured as follows:
• Up to frequency 30MHz, interference voltages are
measured which spread along the terminal in the
supply network.
Interference on long or medium radio waves is generally
greater if the device is earthed. In this case impedance to
the surrounding is short circuited and the asymmetrical
interference current increases.
• Above 30MHz, strength of radiated field or radiated
power on the terminal in the supply network is
measured.
The two types of interference appear according to duration
time; continuous interference and discontinuous
interference. The latter occurs as impulses with less effect
than continuous interference. They are treated and
suppressed from continuous interference separately. Exact
definitions are given in the regulations e.g.
Permitted levels of interference are given in the national
and international regulations. Recommendations given by
CISPR (Comité International Spécial de Perturbation
Radioélectriques) are as follows:
EN 55 011
EN 55 014
CISPR 11,
EN 55 011
EN 55 014
CISPR 11,
CISPR 14-1 etc.
CISPR 14-1
Document Number 26529
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3
General Technical Information
Radio Interference Suppression Capacitors
Vishay Roederstein
G
3. Suppression Components
C
C
y
N
3.1 Capacitors Class X and/or Y ?
Line
x
The suppression capacitor is the most effective interference
component. Its impedance decreases with the frequency,
so that we have a short circuit between the mains terminals
and/or between the terminals and ground at high frequency.
Capacitors for applications between the mains terminals
are called:
L
C
y
PE
X-Capacitors
Figure a) An example of radio interference suppression
with X- and Y-capacitors used in equipment belonging to
protection class I.
Class X-capacitors, X-capacitors for short, are capacitors
with unlimited capacitance for use where their failure due
to a short circuit would not lead to the danger of an electric
shock.
G
C
y
Capacitors for applications between terminals and ground
are called:
N
Line
L
C
x
Y-Capacitors
Class Y-capacitors, Y-capacitors for short, are capacitors,
which serves to reduce the asymmetrical interference
voltage, and are located between a live conductor and the
metal case which may be touched.
C
y
NOTE: The high electrical and mechanical reliability
intended to prevent short circuits in the capacitors. The
limitation of the capacitance of all Y-capacitors is intended
to reduce the AC Voltage of the current flowing through the
capacitor and in the case of DC voltage the energy content
of the capacitor to a safe level.
Figure b)An example of radio interference suppression with
X- and Y-capacitors used in equipment belonging to
protection class II.
Figure a) shows the radio interference suppression of the
motor of a piece of electrical equipment (vacuum cleaner,
portable drill, etc.) of protection class I. Capacitor Cx, which
is used for reducing the symmetrical interference voltage,
is located between the conductors of the mains and is
therefore an X-capacitor. Its failure through a short circuit
causes no danger of an electric shock.
In fulfilling their technical function in electrical equipment,
machines and installations, Y-capacitors bridge industrial
insulating systems whose reliability, in conjunction with an
additional protection measure prevents danger to human
beings and animals.
Figure b) shows an appliance or protection class II where
no protective conductor is connected to the metal case “G”.
They are intended for use in circumstances where failure
of the protection measures of the equipment could lead to
a danger of electric shocks.
In both instances, a short circuit of the Y-capacitor will only
endanger a person touching the appliance if at the same
time, either the protective conductor of protection class I is
broken or the casing insulation is damaged in the case of
protection class II.
Normally X- and Y-capacitors combined in the same case
are called:
XY-Capacitors
The capacitor CX, which is used for reducing the symmetrical
interference voltage, is located between the conductors of
the mains and is therefore a class X-capacitor. First failures
through a short circuit cause no danger of an electric shock.
Examples: Examples of radio interference suppression
with X- and Y-capacitors.
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Document Number 26529
Revision 04-Sep-02
General Technical Information
Radio Interference Suppression Capacitors
Vishay Roederstein
3.1.1. Regulations according to IEC 60384-14, second
edition, 1993-07, and/or EN 132 400, 1994
According to the regulations IEC 60384-14, second edition,
1993-07, and/or EN 132 400, 1994, all capacitors subclass
X2 have to withstand the following types of test, they shall
have the same nominal value:
According to these rules capacitors are subdivided into two
classes, class X and class Y.
Class X-Capacitors
Impulse voltage test with UP = 2.5kV:
Class X-capacitors, X-capacitors for short, are subdivided
into three subclasses, class X1, class X2 and class X3
corresponding to the peak voltages of the impulses
superimposed on the mains voltage to which they may be
subjected to in services. Such impulses may arise from
lighting strikes on outside lines, from switching in
neighboring equipment, or switching in the equipment in
which the capacitor is used.
(this test has to be performed before the endurance test)
Up
Up
2
SUB
CLASS
PEAK
IEC 664
APPLICATION
PEAK
IMPULSE
VOLTAGE
UP
IMPULSE INSTALLATION
VOLTAGE CATEGORY
1.2
50
time (µS)
IN
SERVICE
APPLIED
BEFORE
ENDURANCE
TEST
Endurance Test:
R
When C ≤ 1µF
> 2.5kV
III
High Pulse
application
UP = 4kV
All capacitors have to be tested for 1000 hours at the upper
category temperature with a voltage of 1.25 times rated
voltage (UR). Every hour the test voltage has to be increase
up to 1000 VRMS for a time period of 0.1 second.
X1
X2
R
≤ 4.0kV
When C > 1µF
√
R
UP = 4 C in kV
R
When C ≤ 1µF
General
purpose
UP = 2.5kV
≤ 2.5kV
≤1.2KV
II
-
R
When C > 1µF
√
R
UP = 2.5 C in kV
General
purpose
X3
None
U
2
NOTE: CR is in µF
Class Y - capacitors
0.1s
Class Y - capacitors are further subdivided into four
subclasses Y1, Y2. Y3 and Y4
SUB
TYPE OF
RANGE
PEAK IMPULSE
VOLTAGE UP
CLASS INSULATION BRIDGED OF RATED
VOLTAGES
BEFORE
ENDURANCE TEST
Active Flammability Test:
All capacitors have to be tested with the rated voltage (UR).
At the frequency 50Hz with superimposed 20 pulses at
2.5kV with an interval between the successive discharges
of 5 seconds. The capacitor shall be individually wrapped
in at least one but not more than two complete layers of
specified cheese-cloth. After finishing the test, the cheese-
cloth shall not burn with a flame.
Double Insulation or
Y1
Reinforced
Insulation
≤ 250 V
≥ 150 V
8.0kV
Basic Insulation or
Supplementary
Insulation
Y2
Y3
Y4
5.0kV
None
2.5kV
≤ 250 V
≥ 150 V
Basic Insulation or
Supplementary
Insulation
≤ 250 V
≤ 150 V
U
x
Basic Insulation or
Supplementary
Insulation
2.5
kV
NOTE: For definitions of basic, supplementary, double and
reinforced insulation see IEC 60536, sub-clauses 2.1, 2.2,
2.3 and 2.4.
One Y-capacitor may bridge basic insulation. One Y-
capacitor may bridge supplementary insulation. If combined
basic and supplementary insulations are bridged by two Y2,
Y3 or Y4 capacitors in series, they shall have the same
nominal value.
time
Document Number 26529
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General Technical Information
Radio Interference Suppression Capacitors
Vishay Roederstein
3.2. Suppression Filters
4.5. Rated Temperature
Suppression filters result from a combination of:
capacitors, chokes and a resistor in one unit.
The rated temperature is the maximum ambient temperature
at which the rated voltage can be continuously applied for.
4.6. Insertion Loss
Such filters will be installed in all cases in which the
application of several components is not sufficient. The
basic type shown below is ideal for these applications:
The ratio of the voltage before and after insertion of the
suppressor as measured at the terminations.
In this example the symmetrical noises are short circuited
by the capacitors Cx, whereas the unsymmetrical noises
are attenuated by the current. Compensated choke L and
the two Cy capacitors. As in four-pole capacitors, for the
filters, the noise attentuation is measured as a guide for the
suppression efficiency. Depending on the suppression
conditions, variations of the basic type can used.
NOTE: When measured in decibels the insertion loss is
20 times the logarithm to base 10 of the ratio
stated.
4.7. Main Resonant Frequency
The lowest frequency at which the impedance of the
capacitor is a minimum when applying a sinusoidal voltage.
If the type of suppressor used does not reduce the
interference sufficiently, then it may be necessary to shield
any leads and components which could radiate the
interference. The materials used for this purpose are wire
mesh, metal foil or sheet metal dependent upon the degree
of screening required. Steel or copper are the primary
metals used.
4.8. Impulse Voltage
An impulse voltage is an aperiodic transient voltage of a
defined waveform as described in IEC publication 60060-1.
4.9. Passive Flammability
The ability of the capacitor to burn with a flame as a
consequence of the application of an external source of
heat according to CEI IEC 60384-1 and IEC 60695-2-2.
All plastic case materials used comply with UL-class 94V-0.
C
y
Source of
interference
Mains
C
x
C
y
CATEGORY
MAX
PERMITTED
BURNING
TIME
ADD-
SEVERiTIES FLAME EXPOSURE
TIME (s) FOR CAPACITOR
VOLUME (V) (mm3)
OF
ITIONAL
REQUIRE-
MENTS
4. Terms and Definitions:
FLAMM-
ABILITY
V
≤
250 500 <
≤
V >
4.1. Rated Voltage U
(s)
R
250
V
≤
500 V ≤ 1750 1750
Burning
drop
The rated voltage UR is either r.m.s. operating voltage of
rated frequency, which may be applied to the terminations
of a capacitor at any temperature between the upper and
lower and upper category temperature.
lets or
glow-
ing
A
B
C
15
20
60
120
60
3
parts
falling
down
shall
4.2. Climatic Category
10
5
20
10
30
10
30
not
The climatic category defines the lower rated temperature,
the upper rated temperature, and the humidity class.
ignite
the
20
30
tissue
paper.
4.3. Upper Category Temperature
The maximum surface temperature for which the capacitor
has been designed to operate continuously.
4.4. Lower Category Temperature
4.10. Active Flammability
The minimum surface temperature for which the capacitor
has been designed to operate continuously.
The ability of the capacitor to burn with a flame as a
consequence of electrical loading.
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Document Number 26529
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General Technical Information
Radio Interference Suppression Capacitors
Vishay Roederstein
4.16. Test Voltage
4.11. Dissipation Factor, tan δ
Repeated high voltage test should as far as possible be
avoided as it is more or less destructive regardless of type
of dielectric or manufacturer.
The dissipation factor, tan δ (in %) is the power of the loss
of the capacitor divided by the reactive power of the
capacitor at a sinusoidal voltage of specified frequency.
According to IEC 60384-14, repeated voltage tests must
be carried out at 66% of the voltage required for the type
approval tests.
ESR
Xc
D.C. is preferable to AC. The ionisation caused by AC
voltage increases the risk of permanent impairment of the
tested capacitor.
δ
The test equipment has to be designed to avoid unspecified
stresses of the capacitor, e.g. transients, when connecting
or disconnecting the voltage.
The tan δ reflects the polarization losses of the dielectric
film and the losses caused by the contact resistance
(terminals - schooping - electrodes) of the capacitor. Parallel
losses can, due to the high insulation resistance of film
capacitors, be neglected. The tan δ is temperature and
frequency dependent.
A DC test equipment must not have a tank capacitor. The
test voltage must be applied with a certain rise time which
is normally specified in the relevant IEC standards.
The specified test voltage is used as a factory test and
unless something else is specified, the user can apply the
same voltage only 1-2 times during the specified time.
ESR
tan δ =
4.17. Corona Starting Voltage:
Xc
The corona starting voltage is defined as detectable
electrical discharges resulting from the ionization of air on
the surface or between the capacitor layers. Its value is
dependent upon the internal design of the capacitor element,
the dielectric material, and the thickness of the film. The
usage of series wound capacitors increases the corona
voltage level.
The reciprocal value of tan δ is also known as Q-factor.
Q = 1/tan δ
4.12. Peak Voltage U
S
A peak voltage U
with a peak value U
S
is a temporary, pulse-shaped voltage
, such as can in particular occur when
All capacitors listed in this catalog have been designed in
such a way that the corona starting voltage will be above
the specified AC-voltage rating.
S
switchinginductances.
NOTE: Within the scope of this standard form of a VDE
Specification, it is assumed that peak voltages only occur
sporadically and up to a maximum of 5 times per hour.
The corona starting voltage is typically measured with a
sensitivity of 2 pC (Pico-Coulomb).
4.13. Rated Capacitance CR
4.18. Insulation Resistance (R ) and
IS
Time Constant (τ ):
The rated capacitance C of the capacitor is the capacitance
R
value characterising its rating for a temperature of 20°C
and by which it is described.
The RIS is the ratio of an applied DC voltage to the resulting
leakage current (flowing through the dielectric and over its
body surface) after the initial charging current has ceased.
The RIS is typically measured after one minute. ± 5 s at
20°C and a relative humidity of 50 ± 2%.
4.14. Self Healing
If a conducting particle or a voltage surge punctures the
dielectric, an arc occurs at the point of failure melting the
surrounding metal and insulating the area of the breakdown.
RIS = Upc / Leak (Ω)
The insulation resistance is determined by the property and
the quality of the dielectric material and the capacitor’s
construction.
4.15. Soldering Conditions
Unless otherwise specified the solderability of capacitors
are tested according to DIN IEC 60068, part 2-20. The
following details apply:
The RIS decreases with increasing temperature. A high
relative humidity may decrease the insulation resistance.
RIS changes due to moisture are reversible.
For Single Sided PC Boards:
For capacitor values > 0.33µF the RIS is shown as time
constant (τ). It is the product of insulation resistance and
capacitance and is expressed in seconds or Megohm x µF.
Solder bath temperature / time: 270°C / 5 sec.
For Double Sided PC-Boards:
Solder bath temperature / time: 260°C / 5 sec.
τ = RIS x C (Megohm x µF)
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General Technical Information
Vishay Roederstein
Metallized Plastic Film Capacitors
Radial Types
Plastic Films
QA
SPC
SPC
Metallization
Metallization
Materials
Store
Filmslitting
QA
QA
Store
Winding
SPC
QA
Flattening
Heat
Treatment
Metal
Spraying
Materials
SPC
Spraying
QA
QA
Store
Store
Clearing
Plastic
Cases
Lead
Wires
Welding of
Terminals
QA
QA
QA
QA
Epoxy
Resins
Encapsulant
Postcuring
Information flow
Production flow
Test
Department
Quality Assurance
QA
QA
Statistical Process
Control
SPC
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Document Number 26529
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General Technical Information
Vishay Roederstein
Metallized Plastic Film Capacitors
Radial Types
QA
Production
100%
QA
QA
Testing
Marking
Packing
Materials
Packing
Taping
QA
Store
Statistical
E
valuation
(life tests etc.)
QA
Sample
Test
QA
QA
Complaints
Failure
A
nalysis
Store
Information Flow
Shipping
Customers
Production Flow
Quality Assurance
QA
Statistical Process
Control
SPC
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General Technical Information
Vishay Roederstein
Film Capacitors
1. Alcohols
Methanol
Ethanol
CLEANING PROCEDURE
The influence of higher temperatures or vapor accelerates the
purifying but also the destructive process.
Propanol
Butanol
Please consult Vishay Roederstein if you have doubts about
the usage of your cleaning solvent or if the cleaning process
exceeds a solvent temperature of + 40°C and a cleaning time
of one minute.
Isopropyl
2. Esters
Acetic Acid Ethylester
Acetic Acid Butylester
Methylglycolacetate
Ethylglycolacetate
3. Aqueouse Cleaning Solvents
Tests will be performed upon request.
NOTE: For the protection of the environment chlorinated and
fluorinated hydrocarbons as well as related mixtures (e.g.
Trichloroethane, Trichlorofluoroethane, Tetrachlorohydrocarbon)
shall no longer be used.
4. Glycolether
Propyleneglycolether
The usage of these substances is in Germany and most other
countries, is by law prohibited!
SUITABLE CLEANING SOLVENTS
CAPACITOR VERSION
Plastic Box and Epoxy End-Sealed
Plastic Molded
ITEM
1, 2, 3 or 4
1, 2, 3 or 4
Plastic Wrapped and Epoxy End-Sealed
(Polycarbonate Wrapping)
Will be tested on request
Plastic Wrapped and Epoxy End-Sealed
(Yellow or White Adhesive Tape)
1, 2, 3 or 4
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Document Number 26529
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General Technical Information
Vishay Roederstein
According to IEC 60062
LETTER
CODE
LETTER / NUMBER
CODE
YEAR
MONTH
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
U
V
W
X
A
B
C
D
E
F
January
1
February
March
2
3
April
4
May
5
June
6
H
J
July
7
K
L
August
September
October
November
December
8
M
N
P
R
S
T
9
O
N
D
U
B) Four Figure Code (Year/Week)
A) Two Figure Code (Year/Month)
The production code can also be indicated with 4 code numbers.
The 1st and 2nd code numbers indicate the year and the 3rd and
4th code numbers indicate the week.
The production code is indicated with 2 code letters or with
one code letter and one code number. The 1st figure
indicates the year and the 2nd figure indicates the month.
Examples:
Examples:
18th
50th
32nd
41st
27th
45th
13th
3rd
15th
33rd
48th
10th
21st
Week 1994
Week 1995
Week 1996
Week 1997
Week 1998
Week 1999
Week 2000
Week 2001
Week 2002
Week 2003
Week 2004
Week 2005
Week 2006
= 9418
= 9550
= 9632
= 9741
= 9827
= 9945
= 0013
= 0103
= 0215
= 0333
= 0448
= 0510
= 0621
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
July
August
May
= E7
= F8
= H5
= JO
= KN
= L8
= M6
= N8
= P2
= R2
= SD
= T3
= U4
October
November
August
June
August
January
February
December
March
April
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General Technical Information
Vishay Roederstein
E-Series according to IEC 60063
E6
E12
E24
E48
E96
E6
E12
E24
E48
E96
± 20%
± 10%
± 5%
± 2%
± 1%
± 20%
± 10%
± 5%
± 2%
± 1%
1.0
1.0
1.0
1.1
1.2
1.3
1.00
1.05
1.10
1.15
1.21
1.27
1.33
1.40
1.47
1.54
1.62
1.69
1.78
1.87
1.96
2.05
2.15
2.26
2.37
2.49
2.61
2.74
2.87
3.01
1.00
1.02
1.05
1.07
1.10
1.13
1.15
1.18
1.21
1.24
1.27
1.30
1.33
1.37
1.40
1.43
1.47
1.50
1.54
1.58
1.62
1.65
1.69
1.74
1.78
1.82
1.87
1.91
1.96
2.00
2.05
2.10
2.15
2.21
2.26
2.32
2.37
2.43
2.49
2.55
2.61
2.67
2.74
2.80
2.87
2.94
3.01
3.09
3.16
3.32
3.48
3.65
3.83
4.02
4.22
4.42
4.64
4.87
5.11
5.36
5.62
5.90
6.19
6.49
6.81
7.15
7.50
7.87
8.25
8.66
9.09
9.53
3.16
3.24
3.32
3.40
3.48
3.57
3.65
3.74
3.83
3.92
4.02
4.12
4.22
4.32
4.42
4.53
4.64
4.75
4.87
4.99
5.11
5.23
5.36
5.49
5.62
5.76
5.90
6.04
6.19
6.34
6.49
6.65
6.81
6.98
7.15
7.32
7.50
7.68
7.87
8.06
8.25
8.45
8.66
8.87
9.09
9.31
9.53
3.3
4.7
6.8
3.3
3.3
3.6
3.9
1.2
3.9
4.3
1.5
1.5
1.8
2.2
1.5
1.6
4.7
5.6
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
1.8
2.0
2.2
2.4
6.8
2.2
8.2
2.7
2.7
3.0
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Document Number 26529
Revision 04-Sep-02
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CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.001 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
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MKP1845-210-205-G
CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.001 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
VISHAY
MKP1845-210-205-R
CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.001 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
VISHAY
MKP1845-210-206
CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.001 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
VISHAY
MKP1845-215-204
CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.0015 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
VISHAY
MKP1845-215-204-G
CAPACITOR, METALLIZED FILM, POLYPROPYLENE, 2000 V, 0.0015 uF, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
VISHAY
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