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MKS-MKP.php    7693 Bytes    13-12-2023 12:50:08


What's all this MKS stuff anyhow ?


An Overview ... based on DIN 41379






Metal-Plastic Capacitors (MK capacitors) consist of a thin Plastic Foil on which a thin layer of Metal (mostly Aluminium) is vapour-deposited. Very often the Foil is rolled up to save space. That is why such Capacitors sometimes are also called Film Capacitors or Wound Film Capacitors.

The Overview below sums up some characteristics of the different dielectrica.



MKT • MKH




DielectricPolyester, Polyethylene terephthalate (PET)
ConductorAluminium
AdvantagesGood pulse handling capability, little moisture-dependent, solvent-stable, high insulation resistance, high dielectric strength, small dimensions, very good self-healing performance
Disadvantagestemperature dependence is large and non-linear
large dissipation factor, 0.5% at 1 kHz
audible distortion in hi-fi applications
ApplicationsGeneral applications, HF switch mode power supplies,
operation up to 125°C



MKC • MKM




DielectricPolycarbonate
ConductorAluminium
Advantageslow temperature influence, small dimensions, good long-term stability
DisadvantagesNot suiteable for High Frequency
ApplicationsSuitable for Audio Frequency, automotive electronics,
operation up to 100°C



MKU • MKL




DielectricCellulose Acetate (Synthetic Resin)
Conductorvarious
Advantagesmedium loss factor, self-healing, particularly high overload capacity, small dimensions
DisadvantagesNot suitable for surge discharge circuits, dielectric breakdown of 63 V
ApplicationsGeneral purpose



MKS • MKY




DielectricPolystyrene, Polyethylene terephthalate
ConductorAluminium
Advantagesextremely low loss, and excellent electrical characteristics, specifically capacitance change over temperature, which is typically +-1% over the temperature range of -55 to 85°C
Disadvantagesvery low dielectric constant (k) of 2.1, only small values available !
ApplicationsResonant Circuits, Bypass, Timing, DC-Block



MKP, Metallized polypropylene film capacitors




DielectricPolypropylene
ConductorAluminium
Advantageshigh pulse handling capability, high voltages up to 2000 V, low moisture absorption, low loss factors, and capacitance stability throughout the temperature range
Disadvantagestemperature sensitive above 85 °C
ApplicationsResonant Circuits, For critical electrical conditions




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t1 = 6586 d

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