PCMF2DFN1XL Filters

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Common Mode Chokes are electrical components used in power, signal and data transmission to eliminate common mode currents in the differential signal. The PCMF2DFN1XL is a common mode choke designed for applications that require high performance in a small size. It is ideal for applications such as medical, industrial, automotive, communications and consumer electronics.

The PCMF2DFN1XL is a two-pin surface mount component that is designed for the miniaturization of common mode filters into a very small footprint. The component has a common-mode inductance of up to 1000nH and a differential-mode inductance of up to 3µH. The high inductance of the choke makes it ideal for applications that require high amounts of energy storage and filtering.

The PCMF2DFN1XL is a ferrite based technology that improves EMI suppression efficiency up to -50dB for common-mode noise and up to -30dB for differential-mode noise. The component is manufactured using a low-loss and high-frequency ferrite core material, allowing for a very high performance common mode choke with minimal size, weight and cost. The PCMF2DFN1XL uses an advanced winding and packaging process, which results in a homogenous wave-formed inductance, as well as a high self-resonance frequency.

The PCMF2DFN1XL is designed to reduce unwanted radio frequency interference (RFI) and electromagnetic interference (EMI) in power and signal lines. The common mode choke works by allowing differential mode signals such as digital signals to pass, while attenuating common mode signals. It does this by creating an inductance between two terminals of the common mode filter which diverts the common mode current to ground, while allowing the differential-mode signal to pass unaltered. The common mode filter also acts as an EMI shield, blocking out external sources of interference.

The working principle of the PCMF2DFN1XL is based on Faraday’s law of induction. When an alternating current is applied to one winding of the inductor, an alternating magnetic field is produced. This magnet field induces a current into the second winding. The magnitude and phase of the induced current depend on the mutual inductance, the frequency of the applied current, and the resistance of each winding. In the case of the PCMF2DFN1XL, the inductance is high and the resistance is low, which results in a high mutual inductance and a large amplitude of the induced current.

The PCMF2DFN1XL is a versatile component that is suitable for a wide range of applications. It is designed for applications that require high levels of power transmission, low EMI output and for tight-space installations. Common applications for the PCMF2DFN1XL include surge protectors, automotive infotainment systems, control systems, PLCs, LED displays, power supplies, sound systems, and medical test equipments.

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