KNH21473-3AA

Current:	2A
Height:	0.037" (0.95mm)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Package / Case:	0805 (2012 Metric)
Mounting Type:	Surface Mount
Voltage - Rated:	50V
Applications:	General Purpose
Operating Temperature:	-25°C ~ 85°C
ESD Protection:	No
Values:	C = 0.047µF
Series:	KNH, Kyocera
Resistance - Channel (Ohms):	0.02
Attenuation Value:	--
Center / Cutoff Frequency:	--
Technology:	LC
Filter Order:	--
Type:	Low Pass
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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EMI/RFI Filters (LC, RC Networks)

The use of electromagnetic interference (EMI) and radio frequency interference (RFI) filters has become increasingly prevalent in the modern age due to the proliferation of devices that can generate and be affected by these forms of interference. Among these is the KNH21473-3AA, a high-performance EMI/RFI filter designed to shield sensitive circuitry from the potentially damaging effects of environmental noise. Its application field and working principle are discussed below.

Application Field

The KNH21473-3AA EMI/RFI filter is designed for use in high-speed, high-frequency data communication systems, especially those using differential signaling and line drivers. These systems often require robust EMI/RFI filtering solutions that can reduce the amount of interference reaching sensitive components and ensure reliable operation without compromising signal integrity.The filter offers high attenuation of EMI/RFI signals in the frequency range of 50 MHz to 1 GHz, with a maximum insertion loss of 0.08 dB and a maximum return loss of 30 dB. It is suitable for applications in medical, military, networking, and industrial automation systems, among others.

Working Principle

The KNH21473-3AA EMI/RFI filter is based on a combination of LC and RC networks. These networks are designed with an impedance-matching topology that provides maximum attenuation of EMI/RFI signals while maintaining a low insertion loss. The filter is also constructed using high-precision components, including chip inductors, capacitors, and resistors, to ensure maximum accuracy and consistent performance.The filter is also designed to be highly configurable. It can be easily adapted to different requirements and applications, with the ability to configure the number of filter channels, the number of capacitors, and the range of frequencies. This allows the filter to be tailored to the exact needs of the application while providing maximum protection against EMI/RFI interference.The KNH21473-3AA EMI/RFI filter is an ideal solution for a wide range of applications and systems. Its combination of robust EMI/RFI protection and low insertion loss makes it an ideal choice for differential signaling and line driver components. The filter is also designed for easy configuration and customization, allowing it to provide a tailored, reliable solution for any application.

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