Capacitors for Use in Electronics
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General information on Iskra Capacitors for use in electronics Type Construction of capacitors Class Page KEU metallized polyester capacitors (MKT) 16 KNI metallized polypropylene capacitors (MKP) 29 KNU metallized polypropylene capacitors (MKP) 36

Contents Type Capacitence range Rated voltage Metallized polyester film (MKT) Metallized polyester film (MKT) Metallized polyester film (MKT) Metallized polypropylene film (MKP) Metallized polypropylene film (MKP) axial leads

General technical data ISKRA capacitors for use in electronics are made of dielectric materials as follow: - polypropylene film - olyester p (polyethyleneterephtalate). Survey of specific properties of individual dielectrics and use: Polyester (polyethyleneterephtalate) film Dielectric constant (25 °C/1 kHz): εr = 3,25; ASTM D 150-65T Dielectric loss (25 °C/60 Hz): tanδ ≤ 20,10-4 C; ASTM D 150-65T Dielectric strength (25 °C/60 Hz): 295 kV/mm; ASTM D 149-64, ASTM D 2305-67 Temperature coefficient of capacitance: TC ≈ + 500, 10-6 C/°C Temperature range max.: + 125 °C Water absorption (sink...

2. olerance of T rated capacitance Standard tolerances and belonging codes for marking tolerances of rated capacitances are as follow: Tolerance The narrowest possible tolerance is ± 1 pF (Z). Available tolerances of rated capacitances are stated at type descriptions in catalogue. 3. emperature dependence T of capacitance Temperature coefficient TC is defined for temperature range ϑ1… ϑ2 according to DIN 41380 as follows: C2 - C1 TC = —————— C3 (ϑ2 - ϑ1) C1 - apacitance c at temperature ϑ1 C2 - apacitance c at temperature ϑ2 C3 - apacitance c at temperature (25 ± 10) °C Temperature...

At single types of capacitors the data of allowed pulse loading is valuable for unlimited number of pulses (charging and discharging of capacitors) up to rated voltage Un. Minimum resistance in series with capacitor is then: The real capacitor has always incorrectnesses as serial inductance Ls and loss resistance Rs and Ri. The inductance can be reduced but not to zero. At certain frequency f0 the capacitance and inductance reactances are equal: UR = ated voltage r of the capacitor in V CR = rated capacitance in μF R = min. series resistance in Ohm At the pulses of lower voltage than rated...

Taping specification for radial capacitors acc. to IEC 60286-2

Taping specification for radial capacitors acc. to IEC 60286-2 Carrier tape width Hold-down tape width Hotel position Hold-down tape position Feed hole diameter Feed hole pitch Feed hole centre to lead Feed hole centre to component centre Height from feed hole centre to the component body Lead spacing Lead wire diameter Total tape thickness Extraction force for components Break force of the tape Component height Component alignment * Cumulative pitch error over any 20 pitches: max. ±1mm Package units for radial taped film capacitors:

Taped package units Capacitor thickness b (mm) Ammopack (pcs/box) Reelpack (pcs/reel) Taping specification for axial capacitors acc. to IEC 60286-1 Reel packing Capacitor diameter Body length of capacitor Outer spacing of tapes Inner reel width Tape width Lead length from the capacitor body to the adhesive tape Body location (permissible lateral deviation) Lmax (mm) Body length Component spacing Permissible deviation over 10 spacing

As dielectric high quality polyester film is used, electrodes are of tin or aluminium foil. The winding is extended foil design, terminals are electrically welded to electrodes on frontal side. Such version is little inductive and Pecause of good contacting suitaPle for pulse loading Typical electrical

radial leads, pitch 10 mm to 27,5 mm TECHNICAL DATA General tehnical data Dielectric: polyester (polyethyleneterephtalate) film non-inductive construction, flat shape tinned copper wire; standard lengths l1: 4±0,5; 6-1; 25±5. Other lead lengths on request. flame-retardant plastic case with flame-retardant epoxy resin seal, UL 94 V-0 Iskra symbol, capacitance, tolerance, rated voltage Climatic category: Temperature range: Complies with standards: Capacitance range: Standard values of capacitance (CR): Capacitance tolerance: Allowed alternative voltage up 60 Hz: to + 85 °C UC = UR; from + 85...

Dimensional data: KFU1910 Rated voltage UR Capacitance 100 V DC Imax. hmax. bmax. Imax. hmax. bmax. Imax. hmax. bmax. Imax. hmax. bmax. Imax. hmax. bmax.

Metallized polyester capacitors As a dielectric high quality polyester film with good electrical properties is used. Electrodes of capacitor are vacuum metallized aluminium. is self-regenerative after Preak down. The weak point in dielectric because of un-homogene material in some microseconds regenerate with energy of current bow of charged capacitor. In this process metallized layer of aluminium in the area of weak point without any damage of dielectric burns out. The weak point is blameless insulated. So metallized capacitor withstands breakdowns without a permanent short circuit with...

Capacitors Type KEU1930 Type KEU1930 taped radial leads, pitch 7,5 mm TECHNICAL DATA General technical data Dielectric: polyester (polyethylene terephthalate) film vacuum metallized aluminum on dielectric non-inductive flat shape tinned copper wire; standard lengths l1: 4±0,5; 6-1; 25±5. Other lead lengths on request. flame-retardant plastic case with flame-retardant epoxi resin seal, UL 94 V-0 capacitance, tolerance, rated voltage Climatic category: Temperature range: Complies with standards: Electrical data Capacitance range: Standard values of capacitance (CR): Capacitance tolerance:...

Insulation resistance (Ri) at 20 °C: Min. Ri or Ri × CR between terminals Dimensional data: KEU1930 Rated voltage UR Capacitance Taped version details data see page 10

radial leads, pitch 10 mm to 27,5 mm TECHNICAL DATA General technical data Dielectric: polyester (polyethylene terephthalate) film vacuum metallized aluminum on dielectric non-inductive flat shape tinned copper wire; standard lengths l1: 4±0,5; 6-1; 25±5. Other lead lengths on request. flame-retardant plastic case with flame-retardant epoxi resin seal, UL 94 V-0 Iskra symbol, capacitance, tolerance, rated voltage Climatic category: Temperature range: Complies with standards: Diameter of leads: Pitch r (mm) 10 Capacitance range: Capacitance tolerance: Allowed alternative voltage up to 60 Hz:...