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Capacitors

Capacitors are passive devices that are used in almost all electrical circuits for rectification, coupling and tuning. Also known as condensers, a capacitor is simply two electrical conductors separated by an insulating layer called a dielectric.  The conductors are usually thin layers of aluminum foil, while the dielectric can be made up of many materials including paper, mylar, polypropylene, ceramic, mica, and even air. Electrolytic capacitors have a dielectric of aluminum oxide which is formed through the application of voltage after the capacitor is assembled. 

Characteristics of different capacitors are determined by not only the material used for the conductors and dielectric, but also by the thickness and physical spacing of the components. 

All capacitors have a voltage rating that should not be exceeded. Exceeding the voltage rating of a capacitor can cause it to fail. As the voltage rating increases, the dielectric must be thicker, making high-voltage capacitors larger per capacitance than those rated for lower voltages. 

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C-PEICapacitor - 100V, Polyester Film Inductive (Package of 5)
Polyester film dielectric, aluminum foil electrode, copperply leads and epoxy resin coating in inductive type.
  • Small size, light weight and low cost
  • Dissipation factor is small because the leads are directly welded to electrodes
  • Epoxy resin vacuum-dipped enhances the mechanical strength, humidity resistance
  • 100 volt rating
  • Operating temperature range: -40°C to +85°C.
  • Package of 5
Starting at $0.45
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C-D-100VCapacitor - 100V, Ceramic Disc, ± 10%
± 10% tolerance.
Starting at $0.20
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C-ET25-25Capacitor - 25V, 25µF, Axial Lead Electrolytic
High quality low leakage tubular electrolytic capacitor. Rated for 85° C operation.
Tolerance -20%, +50%.
Measures .52" in length x .25" in diameter
$0.25
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C-ET47-50Capacitor - 50V, 47µF, Axial Lead Electrolytic
High quality low leakage tubular electrolytic capacitor. Rated for 85° C operation.
Tolerance -20%, +50%.
Size .32" dia. x .63" length.
$0.25
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C-ET-50Capacitor - 50V, Axial Lead Electrolytic
High quality low leakage tubular electrolytic capacitor. Rated for 85° C operation. Tolerance -20%, +50%. 
Starting at $0.25
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C-D-2000VCapacitor - 2000V, Ceramic Disc, ± 10%
Ceramic disc capacitors rated for up to 2kV, 10% tolerance.
Starting at $0.30
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C-LCapacitor - 630V, Polypropylene, radial leads

Polypropylene film capacitor.



  • Tolerance: ±10%
  • Radial leads
  • Voltage rating: 630VDC

Starting at $0.34
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C-ET2D2-100-ILCapacitor - Illinois, 100V, 2.2µF, Axial Lead Electrolytic
Polarized electrolytic capacitor with axial leads. Capacitance of 2.2uF and rated for 100V max.
$0.35
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C-ET1-50-ILCapacitor - Illinois, 50V, 1µF, Axial Lead Electrolytic
Polarized electrolytic capacitor with axial leads. Capacitance of 1uF and rated for 50V max.
$0.35
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C-ET4D7-50-ILCapacitor - Illinois, 50V, 4.7µF, Axial Lead Electrolytic
High quality low leakage tubular electrolytic capacitor. Rated for 85° C operation. Tolerance -20%, +50%.
$0.35
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