Polyester film capacitors are a type of capacitor (devices made of one or more pairs of conductors separated by an insulator, used to store an electrical charge), where the polyester film (PET) is used as the insulation material. Compared to other capacitors, polyester has great benefits. They’re a very popular and cheap capacitor making them brilliant use for all applications.
Applications
Polyester film capacitors are typically used as general purpose capacitors so can be used in a variety of products. They’re low cost, small and most have a high capacitance value. Typically they’re used for DC (Direct Current) applications or semi-critical circuits. Polyester film capacitors are also not polarized so they could be used for AC (Alternating Current) signal and power usage.
Most polyester film capacitors can be used in harsh environments where they need to withstand heat & moisture and some other characteristics. They make a great used for all applications.
Key characteristics
High dielectric (insulation) strength - The polyester dielectric used in these capacitors (Also referred to as PET) offers a high level of insulation
Operating temperatures - With the properties of the polyester dielectric our polyester capacitors can work up to temperatures of 125°C making them great use for harsh environments.
Tolerance - Many polyester film capacitors have a tolerance of 5% or 10%, but this is adequate for plenty of applications where insulation strength or temperature resistance are of greater concern.
Humidity resistance - Polyester film capacitors tend to have a brilliant resistance to moisture so makes them a great use in more harsh environments.
Description:
Kemet MMK series metallized polyester capacitors with radial
leads. The MMK series are encapsulated in a self-extinguishing material, with electrically welded tinned wire radial leads. The MMK series are designed for general purpose high reliability use, as well as bypassing ...
Description:
Typical applications are general purchase blocking, coupling, decoupling,
bypassing, and RFI for automotiveHigh pulse strengthHigh contact reliabilityStacked-film technologyPlastic case with epoxy resin sealing (UL 94 V-0).
Description:
KEMET R60 Series polyester capacitors are designed with
radial lead of tinned wire. The capacitors are electrically welded to the contact metal layer on the ends of the capacitor winding and covered in a self-extinguishing solvent resistant plastic case with ...
Description:
From Wima, the MKS2 series of PET capacitors
are available in capacitance options from 0.01uF to 10uF, with rated voltages between 50 V dc and 630 V dc. These metallised polyester capacitors are constructed with vacuum deposited electrodes and a ...
