Film Capacitors

DPPM12D33K Application Field and Working Principle

Film capacitors, also known as polyester capacitors, are important components for many electrical and electronic applications. They feature several advantages such as low losses and high insulation resistance. Capacitors are widely used in energy conversion, signal filter, signal detection, power supply, and other applications. The DPPM12D33K is a specific type of film capacitor.

The DPPM12D33K is a surface-mount polyester film capacitor obtained from the manufacturer Changzhou CDM Electronics Co., Ltd. DPPM12D33K offers a low capacitance in the range of 10-355pF in a small package, making it suitable for various applications. It is commonly used for signal process, filter, detection, power supply, and communications. The construction of a capacitor and its operation are heavily dependent on the type of material used and configured. The core component of DPPM12D33K is a thin layer of polyethelene terephthalate (PET) film coated with metallized aluminum foil. This type of construction is known as an metallized film capacitor.

The metallized film is produced by coating thin layer of metal, usually aluminum, onto the film. The metal is usually applied in a vacuum chamber. This method ensures uniform and consistent coating while optimizing the density of the resulting metal film. The foil also serves as the top and bottom layers of the capacitor as only two layers are needed for the construction. The aluminum layer acts as electrodes while providing the high-level insulation required by the device.

As a passive loading resistor, the film capacitor has a very small value of impedance and a fast response time. Its response speed has multiple order of magnitude compared to the speed of an electrolytic capacitor and it produces no temperature drift. The device is designed to be resilient to permeable materials such as dielectric oil, humidity, and dust. It can also survive higher applied voltage levels, an important safety feature in industrial areas. DPPM12D33K is also designed to operate reliably in temperatures of -40℃ to +85℃ with a capacity tolerance of ±20%.

The DPPM12D33K is a reliable and versatile device suitable for many applications. The compac size of the device and its construction make is suitable for design with limited layout space. The high insulation resistance and tight tolerance ensure the reliability of the device in a wide range of operating conditions.

In conclusion, the DPPM12D33K is a polyester film capacitor made for general surface-mount applications. With its small size and thin construction, the device can fit in spaces with limited layout. The device also offers high insulation resistance, fast response time, and higher applied voltage. It is reliable and can survive extreme temperature changes and other permeables that may present in industrial and other operation environments.