DFKH-31-0008

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Common Mode Chokes, also known as CM chokes, are electrical components used in power transmission and measurement systems to filter out noise interference. The DFKH-31-0008 is a type of CM choke designed for applications wherein higher temperature ranges are present such as automotive and industrial power systems. It is made using the latest surface mount technology and is housed in a UL 94V-0 approved plastic casing.

The DFKH-31-0008 is a choke designed to reduce the amount of Common Mode noise in electronic circuits by providing inductance in both the positive and negative supply line. The choke\'s design is optimized to increase common-mode noise rejection while maintaining low insertion loss in the various frequency ranges at which the unit is designed to operate. This product is suitable for use in applications requiring a temperature range of -40°C to 125°C.

The working principle of a DFKH-31-0008 CM choke is based on the fact that the resistor-like material used for the winding has two resistances, one in common mode and one in differential mode. When line voltages in the circuit change rapidly, the current in the winding will quickly surge, resulting in a voltage drop across the winding and thus a filtering effect to reduce the interference generated by the line voltages. The filtering effect is a function of the inductance provided by multiple turns of the winding in the coil.

The core material used in the DFKH-31-0008 is designed to be an effective electromagnetic shield, allowing the high frequency interference more effectively to be dissipated instead of propagating into the circuit. The casing also offers additional protection against mechanical interference. The casing is made from UL 94V-0 approved plastic, making it particularly suitable for advanced automotive and industrial applications, where interfering signals can be particularly harsh.

The DFKH-31-0008 is suitable for use in a variety of applications, including automotive and industrial power systems, power supplies, single-phase and multi-phase motor controls, frequency inverters, AC/DC power converters, home appliance and LED lighting control systems, and digital control systems. It provides improved electromagnetic compatibility (EMC) and can reduce electromagnetic interference (EMI) in such systems. Moreover, its high temperature range suitability makes it ideal for applications with varying ambient temperatures, including harsh industrial environments.

The DFKH-31-0008 is an ideal choice for applications requiring an effective filter solution. Its optimized design and use of the latest surface mount technology combine to make a reliable and cost-effective Common Mode choke.

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