52F188-002-A

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EMI/RFI Filters (LC, RC Networks)

Electromagnetic interference and radio frequency interference (EMI/RFI) filters are essential components used to improve the integrity of a product’s electrical system and facilitate compliance with electrical and safety regulations. EMI/RFI filters supress undesired signals by restricting high frequencies while permitting the desired frequencies to pass. This type of filter is most commonly implemented using LC or RC networks. Among the applications for this type of filter type is the 52F-188-002-A, which is designed to reduce line-borne and conducted radiated noise.

The 52F-188-002-A is a MIL-PRF-39003 component featuring MIL-STD-1525 Qualification. It is a standard way to reduce conducted and radiated frequencies between the input line and chassis. The filter design consists of two components: an LC filter for common-mode suppression, and an RC filter for differential mode suppression. It is designed to provide maximum suppression for frequencies up to 4MHz, and offers a reduction of up to 30dB in certain circuits.

LC filter networks are made up of inductors and capacitors. The LC filter attenuates interfering frequencies by restricting them to a specific path, thus preventing them from disturbing the other electrical components. The capacitors allow high frequency AC signals to pass, while the inductors restrict AC signals to a specific path, thus acting as a filter. The inductors used in the 52F-188-002-A filter are low resistance, allowing the AC signals to pass through without any impedance. The filter also features a VSWR of less than 1.5 to ensure signal transmission is accurate and reliable.

The RC filter networks are made up of resistors and capacitors. The RC filter is used to reduce differential mode interference, which is the unwanted effect of AC signals from one circuit disturbing another circuit. The resistors are used to reduce the flow of AC signals, while the capacitors allow the AC signals to pass. The RC filter network in the 52F-188-002-A filter is designed to reduce interference up to 40dB. The RC filter also features a parasitic capacitance of less than 50nF which ensures the best signal suppression performance.

The 52F-188-002-A is designed for a wide range of applications including AC power conditioning, power supplies, touchscreens, and automotive electronics. It is designed to reduce the noise from entire systems, ensuring that the system operates reliably and that the highest quality signals are achieved. Furthermore, the filter features an operating temperature range of -40°C to +85°C and is ROHS compliant, making it an ideal choice for applications with high reliability requirements.

The 52F-188-002-A provides protection for electrical systems against the effects of electrical noise, ensuring signal integrity and preserving product performance. The LC filter attenuates higher frequencies and the RC filter attenuates lower frequencies, allowing for maximum noise suppression. With its rugged design, wide range of applications, and its ability to maintain signal integrity, the 52F-188-002-A is an ideal choice for noise suppression systems.

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