PEMI2QFN/LK,115 Filters

Resistance - Channel (Ohms):	65
Height:	0.020" (0.50mm)
Size / Dimension:	0.057" L x 0.039" W (1.45mm x 1.00mm)
Package / Case:	6-XFDFN
Mounting Type:	Surface Mount
Voltage - Rated:	--
Applications:	LAN, PCS, WAN
Operating Temperature:	-40°C ~ 85°C
ESD Protection:	Yes
Values:	R = 65 Ohms, C = 13.5pF (Total)
Series:	PEMIxQFN
Attenuation Value:	15dB @ 800MHz ~ 3GHz
Center / Cutoff Frequency:	--
Number of Channels:	2
Technology:	RC (Pi)
Filter Order:	2nd
Type:	Low Pass
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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EMI/RFI Filters (LC, RC Networks): PEMI2QFN/LK,115 Application Field and Working Principle

EMI/RFI filters are used to protect electrical and electronic circuits and equipment from conducted electromagnetic interference (EMI) and radio frequency interference (RFI). The PEMI2QFN/LK,115 is one of the most common electrical interference filters and is commonly used in electronic equipment, such as computers, medical equipment, military equipment, and more. In this article, we will discuss the application field and working principle of the PEMI2QFN/LK,115.The PEMI2QFN/LK,115 is a two-stage EMI/RFI interference filter that consists of two parts: a physical filter and an electrical filter. The physical filter is a metal enclosure that is made of an aluminum alloy and has a 2mm-thick steel wall. The electrical filter comprises of four resistors, two capacitors, a common-mode choke, and a ground connection. It is designed to reduce the level of generated EMI/RFI within a given electrical circuit. The PEMI2QFN/LK,115 is commonly used in medical imaging equipment to reduce electromagnetic interference (EMI) and radio frequency interference (RFI). It is also used in various industrial and military applications. The filter is designed to attenuate signals within a specific frequency range, which reduces the level of EMI/RFI that can affect the operation of electronic components and circuitry. The filter provides isolation from external EMI/RFI and offers protection to the electronics it is connected to.The working principle of the PEMI2QFN/LK,115 is based on the concept of impedance matching. In a typical application, the filter is placed in series with the signal line. This allows the filter to detect and reduce the level of interference before it can reach the connected equipment. The resistance, capacitance, and common-mode choke of the filter form a network of components that provide impedance matching and provide effective attenuation of unwanted signals. The common-mode choke works in conjunction with the capacitors and resistors to reduce differential mode interference, while the capacitors and resistors act to reduce common-mode interference.The PEMI2QFN/LK,115 is a versatile EMI/RFI filter that is widely used across a variety of applications. It is suitable for use in equipment such as computers, handheld devices, portable medical devices, medical diagnostic equipment, and more. It is also suitable for use in environments with high levels of EMI/RFI, such as in industrial and military settings. The filter is designed to provide effective attenuation of unwanted signals without affecting the quality of the signal.In conclusion, the PEMI2QFN/LK,115 is a two-stage EMI/RFI interference filter that consists of a physical filter and an electrical filter. It is designed to reduce the level of generated EMI/RFI within a given electrical circuit. It is primarily used in medical imaging equipment and in a variety of industrial and military applications. The working principle of the filter is based on the concept of impedance matching and it is designed to provide effective attenuation of unwanted signals without affecting the quality of the signal.

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