CDR7D43MNNP-5R8NC Inductors, Coils, Chokes

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Fixed inductors are a type of electronic device often used in circuit design, in particular, in radio-frequency and switching power supplies. The CDR7D43MNNP-5R8NC is a fixed inductor produced by Standex Electronics that is commonly used in capacitor-coupled resonant loads, in order to filter and shape voltage signals. The device consists of an encapsulated laminated core and a cylindrical ferrite, which are wound in a specific pattern in order to achieve its intended function.

The CDR7D43MNNP-5R8NC has an inductance of 4.3 mH (microhenrys). This allows it to function as a narrow band high-current peak filter in capacitor-coupled resonant loads, thus providing filtering with fast switching times and high currents. It is also designed to absorb or store energy in the capacitor-coupled resonant loads, and this means that it has a high tolerance to overvoltage transients. As a result, it is suitable for use in high-frequency control systems, such as in automotive and aerospace applications, for which high-current peak filtering is required.

The CDR7D43MNNP-5R8NC has a maximum DC current of 800 mA, and its DC resistance is 0.17 ohm. These parameters are considered to be fairly high for its size, and this makes it suitable for use in capacitor-coupled resonant circuits. The device is also capable of operating at a maximum voltage of 80 VDC and has a maximum stored energy of 22.2 J. Its rated life is 4,000 hours, and its operating temperature range is -55 to +125 °C.

In operation, the CDR7D43MNNP-5R8NC acts as an energy storage element, storing the energy from the applied voltage, which is then released when the voltage level changes. This energy storage enables the device to suppress voltage transients, thereby providing protection to the capacitor-coupled resonant load. Additionally, the inductor can act as a bandstop filter, as it is capable of rejecting frequencies outside of its designed operating range.

The CDR7D43MNNP-5R8NC has advantages over other inductors, such as the ultra-miniature common-mode choke, as limited by its size. It is also capable of dealing with high energy pulses up to 800 mA, which makes it suitable for use in high-frequency control systems. Additionally, the device is designed to withstand extreme temperatures, so it is suitable for use in harsh environments, such as in industries where high temperatures are encountered.

In conclusion, the CDR7D43MNNP-5R8NC is a fixed inductor which is suitable for use in capacitor-coupled resonant loads, as it can provide filtering with fast switching times and high currents. Its high tolerance to overvoltage transients makes it well-suited for use in high-frequency control systems, such as in automotive and aerospace applications. Furthermore, the device is capable of dealing with high energy pulses of up to 800 mA and is designed to withstand extreme temperatures, so it is suitable for various industrial applications.

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