38FD3740A-F

Film capacitors, also called plastic film capacitors, consist solely of thin film layers for the dielectric and form the largest capacitor family. The thin plastic films provide tighter tolerances and wider temperature range and higher capacitance range than ceramic or electrolytic capacitors. The 38FD3740A-F types are one of the more popular ranges in the film capacitor family.

The 38FD3740A-F film capacitors are a series of wide-temperature-range polyester film capacitors used in applications where higher temperatures and higher capacitance are required than those provided by ceramic or electrolytic capacitors. These capacitors come with axial leaded solderable terminations and offer high capacitance values with a wide operating temperature range of -55°C to +125°C.

The 38FD3740A-F capacitors are designed for use in telecommunications, medical, or automotive electronics where high reliability and excellent heat resistance are required. In the telecom industry, they are often used in landlines, mobile phones, radar systems, and other radio antenna applications. In medical equipment, they are used in CAT scanners and other medical applications where operation in high temperatures is necessary. In the automotive industry, they are often used both in safety-critical systems, such as airbags, as well as in infotainment systems such as radars and cameras.

The 38FD3740A-F film capacitors have a wide operating temperature range of -55°C to +125°C, which is beneficial in applications where operating temperatures range from high to very low. The capacitors are constructed using multiple layers of thin dielectric films of polyester, polypropylene, polycarbonate, or other plastics, resulting in isolated capacitive layers. The dielectric films are then rolled in a cylindrical or flat design and electrodes deposited on each side. This lattice design allows the dielectric films to be stacked together in a highly compact configuration, and the inert configuration gives the capacitor much higher capacitance values than other types of capacitors.

The working principle of the 38FD3740A-F is based on the electrostatic field generated by the electric charge stored on the metal plates. The charge on the capacitor plates creates an electrical field which is proportional to the charge. When a voltage is applied to the capacitor, the charge stored on each plate will be either positive or negative, depending on the applied voltage. This charge will cause an electric field to be established between the two plates, which in turn causes an electric current to flow through the capacitor plates.

The 38FD3740A-F capacitors are designed to maintain reliable operation despite wide-temperature changes and frequent vibrations of the application’s environment. The capacitors are able to store a specific amount of energy and provide certain rates of current delivery when the surrounding environment experiences temperature variations or sudden changes in voltage or frequency. They have self-healing and arc-resistant properties and can provide protection from spikes and sudden power outages. This makes them an ideal choice for mission-critical applications or any application where stability and reliability are required.

In summary, the 38FD3740A-F is a popular range of film capacitors designed for use in applications where higher temperatures or higher capacitance are required than traditional ceramic or electrolytic capacitors. They have a wide temperature range of -55°C to +125°C and offer high-capacitance values in a highly compact design. These capacitors are suitable for applications in telecommunications, medical equipment, and automotive electronics where high reliability and good performance in a wide range of operational temperature conditions is required.