B82725S2802N21

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Common Mode Chokes, also known as CM Chokes, are electronic devices capable of blocking the flow of undesired transient interference signals while allowing desired signals to pass through. They are constructed from inductor coils wound around iron cores, and offer effective protection to cables and circuits carrying analog signals as well as preventing the buildup of electrostatic fields in connected equipment. B82725S2802N21 is a type of common mode choke, designed for use in industrial power supplies, switch mode power supplies (SMPS), and high frequency applications. With its five-layer construction, it offers excellent attenuation of common mode noise and is capable of suppressing frequencies up to 1MHz.

The B82725S2802N21 is designed to reject both common mode and differential mode noise and has good dynamic characteristics. Its construction consists of two windings, two ferrite cores, and a shield. The two windings create an inductor, which forms the basis of the choke. The two cores are concentric tubular Ferrite materials of different material constants. This allows the core to be operated over a wide range of temperatures without a decrease in performance. Lastly, a shielding material, usually metal foil, is used to reduce the amount of electromagnetic interference the choke produces and to shield against external interference.

The B82725S2802N21 choke has a very good interference attenuation at a range of frequencies, most notably on the differential mode. This means that the choke can reduce differential mode noise by up to 90 dB, or a 100,000:1 ratio, at frequencies up to 1MHz. Furthermore, it can reduce common mode noise by up to 30 dB, or 1,000:1, at frequencies up to 200 kHz. The choke also has a very long operating life, as well as a high peak pulse current and excellent overload characteristics.

As its application requires a wide range of operating conditions, the B82725S2802N21 common mode choke must also have excellent thermal characteristics. In addition to having a large heat dissipation area, the choke is made with two hollow Ferrite cores designed to have low losses, and a metal foil shield which improves the heat dissipation performance. The combination of these features ensures the choke has excellent thermal characteristics over the entire temperature range from -55°C to +125°C.

The B82725S2802N21 common mode choke is typically used in high frequency applications and is ideal for power supply filtering in consumer electronics, industrial machinery, medical electronics, and automotive applications. The characteristics of the choke make it an excellent solution for reducing the level of noise such as switching noise, radiation noise, EMI, and EMC in the signal lines. It also helps reduce the common mode current and the risk of over-voltage problem in the system.

The B82725S2802N21 common mode choke works by providing an electrical barrier between the circuit and external interference sources. It consists of two inductor coils wound around iron cores, which interact with the external interference source and the desired signal. The two coils behave like a transformer, and the coupling of the two coils produces a constant impedance across a wide frequency range, which acts as a barrier to the transmission of noise signals between the two connected circuits. The resistance of the choke reduces with increasing electrical frequency, allowing the maximum attenuation of the noise. The choke then captures the interference and dissipates it as heat.

The B82725S2802N21 common mode choke is an excellent choice for a variety of applications requiring robust noise suppression. The choke offers high performance at different frequencies, excellent thermal characteristics, and a long operating life. With its five-layer construction, it offers excellent common mode noise attenuation and can suppress frequencies up to 1MHz.

The specific data is subject to PDF, and the above content is for reference