B85121A2475A201

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B85121A2475A201 belongs to the Feed Through Capacitors category. Feed Through Capacitors, usually referred to as FTPs, are specialized types of capacitors that are designed for use in high frequency switching-mode power supplies (SMPS), usually in conjunction with Pulse-Width Modulated (PWM) designs.

Feed Through Capacitors are typically designed to reduce the amount of switching noise produced by power supplies or to reduce the transmission of certain types of airborne noise from electronic circuits. The use of Feed Through Capacitors helps to minimize the unwanted interference on the output of the power supply, which can cause system instability or damage the circuits connected to the power supply.

The application field of B85121A2475A201 is mainly for controlling, filtering, and smoothing the radio frequency (RF) signal, which helps to reduce the external sources of interference and ensures reliable operation of the system. It can also be used for filtering out noise generated by high frequency switching which can cause system instability.

The working principle of B85121A2475A201 is to act like a low-pass filter. It consists of a dielectric material, usually ceramic, between two metallic layers. Electrical energy is transmitted through the ceramic material, and the alternating current (AC) component of the signal is blocked from the output. This is done by trapping the AC signals within the dielectric material, which allows only the DC component of the signal to pass through.

In addition to acting as a low-pass filter, B85121A2475A201 also serves as an RF damping or decoupling component. By connecting these capacitors in series with the power supply output, they act as an impedance matching circuit that dampens the high-frequency energy of the supply signal. This helps reduce the amplitude of the RF noise generated by the power supply, which can be an issue when working with sensitive digital circuitry.

In summary, B85121A2475A201 is a feed through capacitor that is designed to reduce RF noise in high frequency switching power supplies. It acts as both a low-pass filter and an RF decoupling component, which helps to protect against system instability and interfering signals. It is typically used in conjunction with Pulse-Width Modulated (PWM) power supplies.

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