MKP1845415136 [VISHAY]
CAP FILM 0.15UF 1.6KVDC AXIAL;
| 型号： | MKP1845415136 |
| 厂家： | 
VISHAY |
| 描述： | CAP FILM 0.15UF 1.6KVDC AXIAL |
| 文件： | 总8页 (文件大小：581K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
General Technical Information
www.vishay.com
Vishay Roederstein
Film Capacitors
RFI suppression capacitors are the most effective way to
reduce RF energy interference. As its impedance decrease
with frequency, it acts as a short-circuit for high-frequencies
between the mains terminals and/or between the mains
terminals and the ground.
FILM CAPACITORS
Plastic film capacitors are generally subdivided into film/foil
capacitors and metalized film capacitors.
FILM / FOIL CAPACITORS
Capacitors for applications between the mains terminals are
called X Class capacitors. Capacitors for applications
between the terminals and the ground are called Y Class
capacitors.
Film / foil capacitors basically consist of two metal foil
electrodes that are separated by an insulating plastic film
also called dielectric. The terminals are connected to the
end-faces of the electrodes by means of welding or
soldering.
X-Capacitors
For the suppression of symmetrical interference voltage.
Capacitors with unlimited capacitance for use where their
failure will not lead to the danger of electrical shock on
human beings and animals. The capacitor must present a
safe end of life behavior.
Main features:
High insulation resistance, excellent current carrying and
pulse handling capability and a good capacitance stability.
METALIZED FILM CAPACITORS
Y-Capacitors
The electrodes of metalized film capacitors consist of an
extremely thin metal layer (0.02 μm to 0.1 μm) that is vacuum
deposited either onto the dielectric film or onto a carrier film.
The opposing and extended metalized film layers of the
wound capacitor element are connected to one another by
flame spraying different metals to the end-faces. The metal
spraying process is also known as schooping. The terminals
are connected to the end-faces by means of welding or
soldering. For the production of metalized film capacitors
Vishay film capacitors uses the conventionally wound film.
Capacitors for suppression of asymmetrical interference
voltage, and are located between a live wire and a metal
case which may be touched. High electrical and mechanical
reliability to prevent short-circuits in the capacitors. The
capacitance value is limited, in order to reduce the AC
current flowing through the capacitor. By following these
technical requirements, it is intended that its failure will not
lead to the risk of electrical shock, making the device with Y
capacitor (in conjunction with other protective measures)
safe to human beings and animals.
Main features:
For
detailed
information,
we
refer
to
High volume efficiency, self-healing properties
www.vishay.com/doc?28153.
SPECIAL DESIGN CAPACITORS
SELF-HEALING
For high current applications Vishay film capacitors is also
able to offer special designs such as capacitors with a heavy
edge metalization or a double sided metalization as well as
combinations that have a film/foil and a metalized film
design in one unit. For high voltage applications it is
furthermore possible to offer designs with dual and multiple
sections. Depending on the design these capacitors provide
low losses, high current and pulse carrying capabilities, high
voltages, small dimensions and good self-healing
properties.
Self-healing, also known as clearing, is the removal of a
defect caused by pinholes, film flaws or external voltage
transients. The heat generated by the arcing during a
breakdown, evaporates the extremely thin metalization of
the film around the point of failure, thereby removing and
isolating the short circuit conditions. On Segmented Film
Technology Capacitors, the self healing effect is more
controlled. The film metalization is made by forming a
pattern of segments, which are connected to each other by
micro fuses. This limits the healing current and limits the
self-healing effect to a well defined section of the film.
RFI SUPPRESSION CAPACITORS
There are two main sources of Radio Frequency
Interference (RFI). Devices that due to their construction
produce RF energy, such as oscillators, radio and TV
receivers; and devices that produce a wide spectrum of
frequency, due to rapid variations in electrical current
intensity, such as switch mode power supplies.
The self-healing process requires only μW of power and a
defect is normally isolated in less than 10 μs. Extensive and
continuous self-healing (e.g. at misapplications) will
gradually decrease the capacitance value.
Interference from source to receiver is spread in three ways:
• Along wiring
• By coupling
• By radiation
Revision: 17-May-17
Document Number: 26033
1
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
www.vishay.com
Vishay Roederstein
stability. The temperature coefficient of the material is
negative. Polypropylene capacitors are typically used in AC
and pulse applications at high frequencies and in DC-Link
capacitors. They are further used in switched mode power
supplies, electronic ballasts and snubber applications, in
frequency discrimination and filter circuits as well as in
energy storage, and sample and hold applications.
DIELECTRIC MATERIALS
The electrical characteristics of plastic film capacitors are to
a great extent dictated by the properties of their dielectric
materials. Vishay film capacitors uses the following film
materials in their production:
POLYETHYLENE
TEREPHTALATE
FILM
OR
POLYESTER FILM (PET)
DIELECTRIC PROPERTIES
(TYPICAL VALUES)
Polyester film offers a high dielectric constant, and a high
dielectric strength. It has further excellent self-healing
properties and good temperature stability. The temperature
coefficient of the material is positive. Polyester capacitors
are regarded as “general purpose capacitors”. They provide
the best volume efficiency of all film capacitors at moderate
cost and are preferably used for DC applications such as
decoupling, blocking, bypassing and noise suppressions.
PARAMETER
PET
3.2
PP
2.2
Relative dielectric constant
DF at 1 kHz (tan δ in %)
IR (MΩ x μF)
0.5
0.02
25 000
0.2
100 000
0.05
Dielectric absorption (%)
Capacitance drift - ΔC/C (%)
Moisture absorption (%)
Maximum temperature (°C)
TC (ppm/°C)
POLYPROPYLENE FILM (PP)
1.5
0.5
Polypropylene film has superior electrical characteristics.
0.4
0.01
The film features very low dielectric losses, a high insulation
resistance, a low dielectric absorption, and a very high
dielectric strength. The film provides furthermore an
excellent moisture resistance and a very good long-term
125
100
+ 400, 200
- 200, 100
CAPACITANCE
Capacitance change at 1 kHz as function of temperature
(typical curve)
Capacitance change as a function of frequency
at room temperature (typical curve)
DISSIPATION FACTOR
Dissipation factor as function of temperature
(typical curve)
Dissipation factor as a function of frequency
at room temperature (typical curve)
Revision: 17-May-17
Document Number: 26033
2
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
www.vishay.com
Vishay Roederstein
Notes
INSULATION RESISTANCE
•
Dielectrics according to IEC 60062:
KT = Polyethylene terephthalate (PET)
KP = Polypropylene (PP)
KI = Polyphenylene sulfide (PPS)
KN = Polyethylene naphtalate (PEN)
•
•
Polyethylene terephthalate (PETP) and polyethylene naphtalate
(PEN) films are generally used in general purpose capacitors for
applications typically with small bias DC voltages and/or small
AC voltages at low frequencies.
Polyethylene terephthalate (PETP) has as its most important
property, high capacitance per volume due to its high dielectric
constant and availability in thin gauges.
•
•
Polyethylene naphtalate (PEN) is used when
a higher
temperature resistance is required compared to PET.
Polyphenylene sulfide (KI) film can be used in applications where
high temperature is needed eventually in combination with low
dissipation factor.
•
Polypropylene (KP) films are used in high frequency or high
voltage applications due to their very low dissipation factor and
high dielectric strength. These films are used in AC and pulse
capacitors and interference suppression capacitors for mains
applications.
Insulation resistance as a function of temperature
(typical curve)
•
Typical properties as functions of temperature or frequency are
illustrated in the following chapters: “Capacitance”, “Dissipation
factor”, and “Insulation resistance”.
DEFINITIONS
P x 1000
ΔT = ----------------------- = -----------------------
A x α
P x 1000
The following definitions apply to both film/foil capacitors
and metalized film capacitors.
G
ΔT - Temperature rise (°C)
RATED VOLTAGE (UR)
A - Surface area of the capacitor (cm2)
The rated voltage is the voltage for which the capacitor is
α - Heat transfer coeff. [mW/(°C x cm2)]
designed. It is defined as the maximum DC (UR) or AC (URAC
)
(α = 0.96 for plastic boxes with a smooth surface)
G - Component heat conductivity (displayed in datasheet)
voltage or the pulse voltage that may continuously be
applied to the terminals of a capacitor up to an operating
temperature of + 85 °C. The rated voltage is dependent
upon the property of the dielectric material, the film
thickness and the operating temperature. Above + 85 °C,
but without exceeding the maximum temperature, the rated
voltage has to be derated in accordance to the dielectric
material used.
Heat coefficient for the capacitor is presented in datasheet
for ΔT calculation.
For critical applications, please forward your voltage and
current waveforms (worst case conditions) for our capacitor
proposal.
TEST VOLTAGE OR DIELECTRIC STRENGTH
MAXIMUM APPLICABLE PEAK TO PEAK RIPPLE
VOLTAGE
When an AC voltage is superimposed to a DC voltage, the
sum of both the DC voltage (UDC) and the peak value of the
AC voltage (Upk) must not exceed the rated DC voltage (UR)
of the capacitor.
The test voltage of a capacitor is higher than the rated DC
voltage and may only be applied for a limited time. The
dielectric strength is measured between the electrodes with
a test voltage of 1.5 x UNDC for 10 s, at metalized film
capacitors and of 2 x UNDC at film/foil capacitors for typically
2 s. The occurrence of self-healing or clearing-effects during
the application of the test voltage is permitted for metalized
film capacitors.
UR ≥ UDC + Upk
PULSE VOLTAGE
AC VOLTAGE
The RMS value of a pulse voltage (URMS(pulse)) must not
The AC voltage ratings refer to clean sinusoidal voltages
without transients. The capacitors must not, therefore, be
operated in mains applications (e.g. across the line). This
applies also to capacitors that are rated with AC voltages
≥ 250 VAC. Capacitors especially designed for mains
operations (X and Y capacitors) are listed as “RFI
Capacitors”. For operations in the higher frequency range,
the applied AC voltage has to be derated. The derated AC
voltages are provided in the graphs “Permissible AC Voltage
Versus Frequency” on the capacitor datasheet. The
calculations of the graphs are based on the assumption that
the temperature rise measured on the surface of the
capacitor under working conditions does not exceed 10 °C.
exceed the rated AC voltage URAC
.
URAC ≥ URMS(pulse)
The peak value of the pulse voltage (Upk) must not exceed
the rated DC voltage.
UR ≥ Upk
NOMINAL CAPACITANCE (CN)
The nominal capacitance is defined as the capacitive part of
an equivalent series circuit consisting of capacitance and
equivalent series resistance (ESR). CN is the capacitance for
which the capacitor is designed. It's value is typically
measured at a frequency of 1 kHz 20 %, at voltage of
0.03 x URDC (max. 5 VAC) and a temperature of 20 °C.
The capacitance tolerance indicates the acceptable
deviation from the rated capacitance at 20 °C. Since the
dielectric constant of plastic film is frequency dependent,
the capacitance value will decrease with increasing
frequency. High relative humidity may increase the
capacitance value. Capacitance changes due to moisture
are reversible.
P = URMS2 x ω x C x tan δ
P - Dissipation power (W)
ω - Angular frequency (rads/s)
C - Capacitance (F)
tan δ - Dissipation factor at frequency (f)
Revision: 17-May-17
Document Number: 26033
3
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
www.vishay.com
Vishay Roederstein
CAPACITANCE DRIFT (LONG TERM STABILITY)
INSULATION RESISTANCE (Ris) AND TIME CONSTANT (τ)
In addition to reversible changes the capacitance of a
capacitor is also subject to irreversible changes also known
as capacitance drift. The capacitance drift is dependent
upon the dielectric material. The drift decreases gradually
over the time. Frequent and extreme temperature changes
may accelerate the process.
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 %.
UDC
Ris = -------------(Ω)
TEMPERATURE COEFFICIENT (TC)
Ileack
The temperature coefficient is the average capacitance
change over a specified temperature range. It indicates how
much the capacitance changes referred to 20 °C, if the
temperature changes by 1 °C. The TC is typically expressed
in ppm/°C (parts per million per °C). Depending upon the
dielectric material the TC can either be positive, or negative.
The insulation resistance is determined by the property and
the quality of the dielectric material and the capacitor's
construction. The Ris decreases with increasing
temperature. A high relative humidity may decrease the
insulation resistance. Ris changes due to moisture are
reversible. The Ris is shown as time constant (τ). It is the
product of insulation resistance and capacitance and is
expressed in seconds.
C2 - C1
TC = ----------------------------------------
C20 x (T1 - T2)
C1 - Capacitance at temperature T1
C2 - Capacitance at temperature T2
C20 - Reference capacitance at 20 °C 2 °C
τ = Ris x C
INDUCTANCE (L)
The inductance of a capacitor depends upon the geometric
design of the capacitor element and the length and the
thickness of the contacting terminals. All Vishay film
capacitors have an extended metalized film or foil
construction and exhibit thus a very low inductance. The
inductance of radial leaded capacitor types are typically
measured with 2 mm long lead wires. Typical values are less
than 1.0 nH per mm of lead length.
DISSIPATION FACTOR (tan δ)
The dissipation factor (tan δ) is the ratio of the ESR to the
capacitive reactance XC (series capacitance) or the active
power to the reactive power at a sinusoidal voltage of a
specified frequency.
ESR
RESONANT FREQUENCY (fr)
The resonant frequency is a function of the capacitance
and the inductance of a capacitor. At resonant frequency
the capacitive reactance equals the inductive reactance
(l/ωC = ωL). At its lowest point of the resonant curve only the
ohmic value is effective, this means the impedance equals
the ESR. Above the resonate frequency the inductive part of
the capacitor prevails.
XC
δ
IMPEDANCE (Z)
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.
The impedance Z is the magnitude of the vectorial sum of
ESR and the capacitive reactance XC in an equivalent series
circuit under consideration of the series inductance L.
2
2
l
Z = ESR + ωL - --------
ESR
tan δ = -----------
XC
ωC
The impedance is typically measured on capacitors (radial
types) having 2 mm long leads.
The reciprocal value of tan δ is also known as Q-factor.
1
Q = ------------
tan δ
DIELECTRIC ABSORPTION (DA)
The DA depends upon the dielectric material and is a
measure of the reluctance of a dielectric to discharge
completely. After a fully charged capacitor is discharged the
residual charge (recovery voltage) is expressed as a
percentage of the initial charge. DA measurements are
normally performed in accordance to IEC 60384-1.
U1
EQUIVALENT SERIES RESISTANCE (ESR)
The ESR is the ohmic part of an equivalent series circuit. Its
value assumes all losses to be represented by a single
resistance in series with the idealized capacitor.
Rpol
DA = 100 x ------(%)
U2
L
RS
U1 - Recovery Voltage
U2 - Charging Voltage
AMBIENT TEMPERATURE (Tamb
)
Ris
The ambient temperature is the temperature in the
immediate surrounding of the capacitor. It is identical to the
surface temperature of an unloaded capacitor. At pulse or
AC load operations the surface temperature may, due to an
internal temperature increase, rise above the ambient
temperature.
The ESR comprises the polarization losses of the dielectric
material (Rpol), the losses caused by the resistance of the
leads, termination and electrodes (Rs) and the insulation
resistance (Ris).
tan δ
ESR = ---------------
ω x C
Revision: 17-May-17
Document Number: 26033
4
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
www.vishay.com
Vishay Roederstein
MAXIMUM TEMPERATURE (Tmax.
)
- Maximum pulse voltage (Upulse
- Pulse shape
- Pulse rise or fall time (du/dt)
- Repetition frequency of the pulse
- Ambient temperature
- Heat dissipation (cooling)
)
The maximum temperature or upper category temperature
is the highest temperature at which a capacitor may still be
operated. At pulse or AC load operations, the sum of the
ambient temperature (Tamb) and the temperature increase
(ΔT) caused by the load conditions, must not exceed the
maximum temperature (Tmax.).
The maximum pulse current depends upon the capacitance
and the permissible du/dt value.
Tmax. ≥ Tamb + ΔT
Imax. = (du ⁄ dt) x C (A)
CLIMATIC CATEGORY
The climatic category indicates the climatic conditions
which the capacitor may be operated. According to
IEC 60068-1 the climatic category is expressed by a three
group coding e.g. 55/100/56.
For high voltage and high current pulse loads Vishay film
capacitors offers also a series of special capacitors. For
example capacitors with a heavy-edge or a double-sided
metallization and capacitors that combine a film/foil and a
metalized film design in one unit.
- The first group indicates the lower category temperature
(- 55 °C).
- The second group the upper category temperature
(+ 100 °C).
- The third group indicates the number of days (56) which
the capacitor can withstand within specified limits if
exposed to a relative humidity of 95 % and a temperature
of + 40 °C.
For critical applications, please forward your voltage and
current waveforms (worst case conditions) for our
capacitor proposal.
CORONA STARTING VOLTAGE
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.
(IEC 60068-1)
PULSE RISE TIME (du/dt)
The pulse rise time indicates the ability of a capacitor to
withstand fast voltage changes and hence high current
peaks. The du/dt value, expressed in volts per μs (V/μs),
represents the steepest voltage gradient of the pulse (rise or
fall time). Its value is dependent upon the properties of the
dielectric material, the film thickness and the capacitor's
construction. If the applied pulse (Upulse) voltage is lower
than the rated voltage (UR) higher pulse rise times are
permitted.
NON-FLAMMABILITY
Non-flammability of capacitors is accomplished by the
usage of flame-retardant materials. Non-flammability is
periodically checked according to IEC 60384-1 and IEC
60695-2-2. All plastic case materials used comply with
UL-class 94 V-0.
UR
du ⁄ dt(max.) = (du ⁄ dt) x ----------------
GENERAL TEST CONDITIONS
Upulse
Unless otherwise specified, all electrical data refer to an
ambient temperature of + 23 °C, an atmospheric pressure of
86 kPa to 106 kPa and a relative humidity of 45 % to 75 %.
For arbitration cases measurements at 20 °C and a relative
humidity of 50 % 2 % are mandatory.
du/dt = Datasheet value.
The pulse rise time (du/dt) is tested with values that are 5 to
10 times above the datasheet value.
For film/foil capacitors the applied pulse rise time (du/dt) is
not limited. At higher repetition frequencies, however, the
heat generated in the capacitor during the pulse operation
must not rise by more than 10 °C.
SOLDERING CONDITIONS
Regarding the resistance to soldering heat and the
solderability, our products comply with “IEC 60384-1” and the
additional type specifications.
PULSE LOAD AND CURRENT HANDLING CAPABILITY
The pulse load and current handling capability is the load of
a non-sinusoidal AC voltage that may be applied to a
capacitor. To prevent the capacitor from overheating the
following operating parameters have to be considered:
For all capacitors, we refer to the paragraph “Soldering
Conditions” in the type specifications.
For more detail, we refer to the document “Soldering
Guidelines for Film Capacitors”: www.vishay.com/doc?28171
SEVERITIES FLAME EXPOSURE TIME (s) FOR
MAXIMUM
CATEGORY OF
FLAMMABILITY
CAPACITOR VOLUME (V) (mm3)
PERMITTED
ADDITIONAL REQUIREMENTS
BURNING TIME (s)
V = 250 250 < V = 500
500 ≤ V = 1750 V > 1750
A
B
C
15
10
5
20
20
10
60
30
20
120
3
Burning droplets or glowing
parts falling down shall not ignite
the tissue paper.
60
10
30
30
Revision: 17-May-17
Document Number: 26033
5
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
Vishay Roederstein
www.vishay.com
SHELF LIFE OR STORAGE CONDITIONS
FAILURE RATE
Film capacitors should be stored under temperatures
conditions from - 25 °C up to 35 °C, with relative humidity
maximum of 75 % without condensation.
The failure rate is expressed in “FIT” (failures in time) and
indicates the number of failures per 109 component test
hours.
1 fit = 1 x 10-9/h (1 failure per 109 component hours)
The following shelf life is applicable:
Parts supplied on tape or bulk:
n
λref = ---------------
N x tb
Minimum shelf life of two years without impairing the
electrical parameters.
n = Number of components tested
N = Number of failures
Parts soldered on a PC board:
Minimum shelf life of 10 years without deterioration of
quality.
tb = Test time in hours
The calculations of the failure rates are based on
IEC 601709. The fit ratings provided refer to 40 °C, 0.5 x
CLEANING PROCEDURE
The influence of high temperatures or vapor accelerates the
purifying but also the destructive progress.
Please consult Vishay film capacitors 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.
U
RDC and an upper confidence level of 60 %.
The failure criteria is defined as follows:
Critical defect:
Short circuit or open circuit, ΔC/C > 50 %
Defect by the change of limiting values:
ΔC/C > 10 % (MKT)
BATH TUBE CURVE
ΔC/C > 5 % (KP, MKP)
It represents the characteristic shape of the failure rate over
the operation period. Its course may be divided into three
time phases:
Δ tan δ > 2 x initial limit (MKT)
Δ tan δ > 3 x initial limit (KP, MKP)
Ris < 0.5 % (MKT) of initial limit
Ris < 1.5 % (KP, MKP) of initial limit
λ
FIT ratings of other voltage and temperature conditions can
be converted according with IEC 601709 as follows:
Early failures
Wear out failures
VOLTAGE CONVERTION FACTORS (πU)
Constant failure rate
LOAD RATIO
MKT
MKP
KT
KP
(U/Urat
)
I
II
III
1.00
6.1
2.5
1.0
0.4
0.2
11.0
3.0
1.0
0.4
0.2
t
0.75
I. Early failure phase
II. Application phase
III. Wear-out phase
0.50
0.25
0.10
The failure rate at phase II can be assumed to be constant.
BURN-IN
TEMPERATURE CONVERTION FACTORS (πU)
The burn-in or artificial aging of components is a measure to
minimize early failure rates. In the burn-in test the
components are generally subjected to an electrical and
thermal stress.
KT
MKT
KP
MKP
TEMPERATURE
≤ 40 °C
55 °C
1
2
1
2
FAILURE
70 °C
5
5
A failure means the unacceptable deviation from at least one
property of a component that was without a defect at the
beginning of its application. There are critical failures (e.g.
short or open circuit) and failures caused by exceeding
limiting values.
85 °C
12
33
350
12
33
100 °C
125 °C
In case of claims the following information will be required
by the manufacturer:
λ = λref x πU x πT
• Kind of defect observed
FMEA
• Occurrence of the defect (e.g. incoming inspection,
The “Failure Mode and Effects Analyses” is a method that
analyses systematically the potential defects as to their
importance, the probability of their occurrence and the
probability of detecting them (Pareto Analysis). This analysis
is carried out during development and manufacturing. The
results are used for a continuous improvement of quality.
burnin, reliability test, field)
• Operating conditions
• Date code (on the component)
• Number of pieces rejected
• Lot size
• Lot number (on the label of the box)
• Return defect samples for failure analysis
This information will allow the manufacturer to solve the
problem as quick as possible and to initiate the appropriate
corrective actions.
Revision: 17-May-17
Document Number: 26033
6
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
Vishay Roederstein
www.vishay.com
TEST INFORMATION
Damp heat cyclic (Db)
This test determines the suitability of capacitors for use and
storage under conditions of high humidity when combined
with cyclic temperature changes and, in general, producing
condensation on the surface of the capacitor. One cycle
consists of 24 h exposure to 55 °C and 95 % to 100 %
relative humidity (RH).
Robustness of leads
Tensile strength of leads (Ua) (load in lead axis direction)
Lead diameter 0.5 mm, 0.6 mm and 0.8 mm:
Load 10 N, 10 s.
Bending (Ub)
Lead diameter 0.5 mm, 0.6 mm and 0.8 mm:
Load 5 N, 4 x 90°.
Cold (Aa)
Lead diameter 1.0 mm:
Load 10 N, 4 x 90°.
This test determines the ability of the capacitors to be used
or stored at low temperature. The standard test is 2 h at the
lower category temperature.
Torsion (Uc) (for axial capacitors only)
Severity 1: Three rotations of 360°.
Severity 2: Two rotations of 180°.
Damp heat steady state (Ca)
This test determines the suitability of capacitors for use and
storage under conditions of high humidity. The test is
primarily intended to permit observation of the effects of
high humidity at constant temperature over a specified
period.
Rapid change of temperature (Na)
The rapid change of temperature test is intended to
determine the effect on capacitors of a succession of
temperature changes and consists of 5 cycles of 30 min at
lower category temperature and 30 min at higher category
temperature.
The capacitors are exposed to a damp heat environment,
which is maintained at a temperature of 40 °C and an RH of
90 % to 95 % for the number of days specified by the third
set of digits of the climatic category code.
Dry heat (Ba)
This test determines the ability of the capacitors to be used
or stored at high temperature. The standard test is 16 h at
upper category temperature.
FILM CAPACITORS
Metal spray
MKP metalized polypropylene film
layer
Metal spray
MKT metalized
layer
polyester film
Connecting
wire
Connecting
wire
MKP1848
Extended Metalized Film Design
F1772-2
Extended metalized film with internal series connection design
Double-sided metalized
polyester carrier film
Double-sided metalized
polyester carrier film
Polypropylene film dielectric
Polypropylene film dielectric
Single-sided metalized
polypropylene film
Metal-sprayed contact layer
Metal-sprayed contact layer
MMKP383 (250 V to 630 V)
Extended double-sided metalized film design
MMKP383 (1000 V to 1400 V)
Extended double-sided metalized film with
internal series connection design
Revision: 17-May-17
Document Number: 26033
7
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
General Technical Information
www.vishay.com
Vishay Roederstein
Metal spray
Metal spray
layer
layer
MKP metalized
polypropylene film
MKP metalized
polypropylene film
Connecting
wire
Connecting
wire
MKP385 (1600 V to 2000 V)
Extended metalized film with internal series connections
(3 sections) design
MKP385 (2500 V) Extended metalized film with
internal series connections (4 sections) design
Polpypropylene film dielectric
Double-sided metalized polyester
Metal foil
Metal-sprayed contact layer
KP1836
Extended foil design with internal series connection and
double-sided metalized carrier film
Revision: 17-May-17
Document Number: 26033
8
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
相关型号：
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