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Polyester capacitor

Polyester capacitor refers to the use of two metal foils as electrodes, sandwiched in a very thin insulating medium, rolled into a cylindrical or flat cylindrical core, the dielectric is polyester, polyester film capacitors, high dielectric constant, small volume, large capacity , Good stability, suitable for bypass capacitors.

Description

Type:Polypropylene Film Capacitor
Rated Voltage:100VDC,250VDC,400VDC,630VDC
Operating Temperature:-40℃~85℃
Application:General Purpose
Capacitance:0.010uF~2.2uF

Definition

Polyester capacitor refers to the use of two metal foils as electrodes, sandwiched in a very thin insulating medium, rolled into a cylindrical or flat cylindrical core, the dielectric is polyester, polyester film capacitors, high dielectric constant, small volume, large capacity , Good stability, suitable for bypass capacitors.

Features

1. Wide capacitance range,small size and light weight

2. Long life due to self-healing effect

3. Flame retardation epoxy resin powder coating provides safety

4. Suitable for blocking,by-pass and couping of DC and

5. Signals to VHF range

6. Widely used in fifter and low pulse circuits

Function and role

Polyester capacitor is an indispensable basic element in electronic products. It plays a role in filtering, oscillating, decoupling power, bypassing and coupling pulse signals in the circuit.

Film capacitors have better accuracy, loss angle, insulation resistance, temperature characteristics, reliability, and environmental adaptability than electrolytic capacitors and ceramic capacitors.

Structure

The simplest structure of polyester capacitors consists of a layer of insulating dielectric sandwiched between two metal plates. By applying a voltage between two metal plates (plates), the plates can store charge. The stored charge is proportional to the voltage between the plates and the area (capacity) of the plates, and inversely proportional to the distance between the plates.

Classification

There are many small classifications of polyester capacitors, such as the common CL11, CL21; the difference is that the inner wall of the CL21 capacitor uses metallization technology, which is much smaller than CL11, but the overall performance is not as good as CL11.

Application

Used in various DC or low-frequency pulsating circuits. Suitable for use as a bypass capacitor.

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