HM28-25030LF

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Common Mode Chokes

Common mode chokes are electronic components used to reduce noise or provide a filter. They are heavily used in the automotive industry, military, aerospace, medical, telecommunications and industrial applications. Common mode chokes use coils wound around a core of magnetic material, such as ferrite or iron, to create an inductor. This inductor’s impedance increases with frequency. The two coils interact with each other to create a choke that is able to restrict the passage of alternating current while allowing direct current to pass. Such components are commonly known as EMI or RFI chokes.

HM28-25030LF Application Field and Working Principle

The HM28-25030LF is a common mode choke designed for use in noise reduction applications, also known as EMI/RFI filters. This device is typically used in applications that require a very low profile device, such as automotive, medical, and telecommunications. The HM28-25030LF consists of two cores encased in a single case, each with two coils wound around them. The four coils interact to form a choke that blocks alternating current while allowing direct current to pass. The HM28-25030LF has a higher tolerance for frequencies below 100kHz and a higher impedance at frequencies above 1MHz. The HM28-25030LF also has high isolation between the winding and the ground.

The device has excellent common mode noise suppression which is ideal for car radio/audio systems, as well as for other high frequency applications. The device also has a high self-resonance frequency that makes it suitable for high speed, long distance data transmission applications. The HM28-25030LF has a working temperature range of -55°C to +125°C, making it suitable for a wide range of environmental conditions.

The working principle of the HM28-25030LF is quite simple. The four coils interact to form an inductor, which restricts the passage of alternating current, while allowing the passage of direct current. Because of its low profile, the device is easy to install in electronic equipment and boards with very limited space. The device also has an integrated shield that allows for the removal of stray noise. The shield acts as a barrier between the device and its environment, filtering out noise and interference.

The HM28-25030LF is an excellent choice for applications that require a low profile common mode choke with excellent common mode noise suppression and a high self-resonance frequency. The device is suitable for a wide range of environmental conditions and has a high tolerance for frequencies below 100kHz. The device also has an integrated shield that allows for the removal of stray noise. Overall, the HM28-25030LF is an excellent choice for those applications that require a low profile common mode choke.

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