684PSB700K4H

Film Capacitors

Film capacitors are capacitors in which the capacitance element is made of a film of plastic (mostly polyester). The characteristics of film capacitors lie between those of ceramic capacitors and those of electrolytic capacitors due to their larger size and larger capacitance values. They have excellent temperature performance and stability, a wide capacitance range and low ESR. Film capacitors are used for applications such as bypass, AC DC coupling, signal coupling and filtering.

684PSB700K4H Application Field and Working Principle

684PSB700K4H is a thermal-insulated polypropylene film capacitor manufactured by TDK Corporation. This capacitor is widely used for applications such as AC input/DC output DC coupling, AC/DC bypass, EMI/RFI suppression, signal coupling, AC line bypass, power conditioning, power supply filtering and decoupling.

The 684PSB700K4H features several distinct advantages over ceramic capacitors, such as wider capacitance range, higher capacitance values, and higher temperature range. The capacitance range is from 0.1uF (microfarad) to 1000uF. The temperature range is -55°C to +125°C.

The 684PSB700K4H features two electrodes which are made of tin-plated electrolytic copper. These electrodes are separated by an electrical insulation barrier, which is usually made of polyester. The capacitance element is encapsulated by a heat-resistant, moisture-resistant sleeve, and is then press-fitted into the aluminium cans. The cans are fitted with crimpable posts, or solder lugs, for electrical connection.

When a voltage is applied across the electrodes of the 684PSB700K4H, a dielectric field column is created between the two electrodes. This dielectric field resists the flow of electrons, allowing for the accumulation of charges on the capacitor’s plate and the formation of an electric field. This electric field stores energy in the form of electric potential, and this potential is what makes the capacitor a functional part of the electrical circuit.

In summary, the 684PSB700K4H is a thermal-insulated polypropylene film capacitor designed for applications such as AC input/DC output DC coupling, AC/DC bypass, EMI/RFI suppression, signal coupling, AC line bypass, power conditioning, power supply filtering and decoupling. It features a capacitance range from 0.1uF to 1000uF and wide temperature range from -55°C to +125°C. Its electrodes are made of tin-plated electrolytic copper, and its dielectric element is made of polyester.

The 684PSB700K4H is a reliable and cost-effective solution for a wide range of applications requiring stable, reliable performance, high capacitance values and wide temperature range.