A polypropylene capacitor is the type of capacitor that uses the polymer polypropylene as a dielectric and is also known as a PP capacitor. Polypropylene is a dielectric material used primarily for capacitors required large and powerful capacitors. They are commonly utilized for high power and high-frequency applications like induction heating, pulse power discharge applications, and AC capacitors used for electric distribution.
Polypropylene capacitors are commonly used in many electric types of equipment. They are constructed using two thin-film plastic pieces and are charged with electrodes as their dielectric. They can be used in place of electrolytic capacitors, especially in applications where the voltage is above 500 V.
Enrgtech has a wide variety of these polypropylene film capacitors with varying capacitances, voltage ratings, and tolerances to meet your electric requirements and complete the tasks.
Characteristics of Polypropylene Capacitors
Polypropylene capacitors are widely available and used for various applications, even though there are some limitations to them. Some of the main factors regarding these capacitors are as follows:
Polypropylene capacitors are used for applications where increased tolerance is needed. You will be able to find capacitors with even 1% tolerance.
These capacitors are also used for applications requiring a stable level of capacitance because very little change of capacitance occurs over time. With the voltage applied, they are ideal for the purpose. Polypropylene capacitors have a temperature coefficient negative and linear.
You will find PP capacitors being available as leaded components. Various ceramic capacitors are widely used, whereas surface mount versions are not available.
Polypropylene capacitors have low ESR and equivalent series resistance, and many also have low inductance levels.
These capacitors can effectively operate with high voltages. Even the most miniature PP capacitors are known to work at voltages of 630 V or even 1 kV.
PP capacitors work even at 100°C and sometimes with suitable de-rating. However, it is still essential to check for the manufacturer’s specifications before designing them in a specific component.
PP capacitors are available in a wide range of capacitance values. Commonly they are available in capacitance ranging from 100pF up to 10 nF and more.
Applications of Polypropylene Capacitors
PP capacitors are used in many areas of electronics for a variety of applications.
- They are utilized in high power or high AC voltage circuit applications.
- Circuits that operate with high peak current levels also require PP capacitors.
- PP circuits are used in high-frequency resonant circuits.
- Precision timing circuits use PP capacitors.
- They are used in lighting ballast systems.
Polypropylene capacitors are used in many audio applications, and according to users, many believe that it improves performance and offers better sound quality.
- They are used in high-frequency pulse discharge storage
- Since PP capacitors have high resistance levels, they enable low self-discharge, due to which they are ideal for energy storage circuits.
- PP circuits are used to switch power supplies and sample and hold courses.
Roles of Polypropylene Capacitors
Film capacitors are among the commonly used capacitors. Their insulation impedance is high with a greater frequency response and no polarity. Therefore, a film capacitor is often used in analog circuits, integrated circuit boards, and other circuits. The prominent roles of PP capacitors in practicality are:
- Suppressing electromagnetic interference from a power supply
- Impedance reduction
