Film Capacitors

Film capacitors are components that frequently substitute for electrolytic and ceramic capacitors in mission-critical applications. They can be used for AC line filtering, coupling, decoupling, power factor correction, and signal snubbing. Their main features include high reliability, stability and excellent temperature characteristics.

BFC237673752 Application Field and Working Principle

BFC237673752 film capacitors are high-Performance polypropylene capacitors with dry construction with metalized film as dielectric and design, which is ideal for AC line filtering and signal snubbing. It can withstand most of the extreme operating conditions and provides optimized performance for many commercial and industrial applications. Their main features include high capacitance stability over temperature, low ESR, ESL, and temperature coefficients.

BFC237673752 capacitors have an extended frequency bandwidth, making them ideal for many applications. They feature a capacitance ranging from 18pF to 470uF, rated voltage from 250V to 450V AC, operating temperature from -40°C to +105°C, and dissipation PH-value of 0.06W/K@ 20C.

The working principle of Film capacitors is based on the fact that two parallel plates that are facing each other separated by an insulating film form a capacitor when they are connected in an electric circuit. The electric field between the two plates creates a potential difference between them, allowing current to flow between them. When two plates are used the outmost plate is usually referred to as the anode and the innermost plate as the cathode. When a voltage is applied the capacitor charges until a balance, also known as equilibrium is reached.

The charge is stored between the plates of the Film capacitor and it is directly proportional to the applied voltage. During discharge, the electric charge stored in the capacitor decreases due to the current drain from the circuit. When the discharge is complete, the capacitor returns to an uncharged state and is ready to store charge again. This repeating cycle gives the capacitor its power.

BFC237673752 film capacitors are mainly used for AC line filtering, signal snubbing and power factor correction applications. They are used in medical, automotive, industrial and power electronics applications. Due to their low ESR, ESL and temperature coefficient, they have significantly higher noise immunity and better stability in high temperatures and extreme environmental conditions. Their high performance and long life span make them an ideal choice for many commercial and industrial applications.