4610H-701-500/390L

Number of Channels:	9
Center / Cutoff Frequency:	--
Attenuation Value:	--
Resistance - Channel (Ohms):	50
Values:	R = 50 Ohms, C = 39pF
ESD Protection:	No
Operating Temperature:	-30°C ~ 85°C
Applications:	General Purpose
Voltage - Rated:	50V
Mounting Type:	Through Hole
Package / Case:	10-SIP
Size / Dimension:	0.998" L x 0.150" W (25.35mm x 3.81mm)
Height:	0.335" (8.50mm)
Series:	700
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Low Pass
Filter Order:	1st
Technology:	RC

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Introduction to EMI/RFI Filters (LC, RC Networks)

Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI) are becoming increasingly problematic as technology advances. EMI refers to electrical noise generated by nearby electronic devices that can disrupt data transmission, and RFI refers to environmental interference that can affect the quality of radio signals. In order to counteract these intrusive and frustrating signals, engineers often employ special filters referred to as EMI/RFI filters.

What Is an EMI/RFI Filter?

EMI/RFI filters are electronic components used to limit and restrain electrical noise. These filters are typically available in two main varieties - inductive and capacitive. Inductive filters contain inductors, or “coils,” while capacitive filters contain capacitors. Together, these components form LC (inductor-capacitor) or RC (resistor-capacitor) networks that can be employed to reduce EMI/RFI emissions.

4610H-701-500/390L Application Field and Working Principle

The 4610H-701-500/390L is a specific type of EMI/RFI filter developed by Murata Electronics. These filters are designed for general-purpose applications such as personal computers, consumer electronics, and communication equipment. The 4610H-701-500/390L is an LC network that consists of a 470 Ohm resistor connected to a 390uH inductor. This inductor-resistor combination works in tandem with a 500V capacitor in order to filter out EMI or RFI signals.The resonance circuit formed by the LC network works with the main filtering capacitor to provide maximum filtering efficiency. At a given frequency, the LC network has low impedance, blocking out the incoming signal before it reaches the capacitor. At this frequency, the filter\'s self-resonance point is reached and the inductor acts as an open circuit to block out any incoming signals. The resistor also reduces the impedance, allowing the capacitor to filter out any remaining signals. In summary, the 4610H-701-500/390L filter combines inductors, capacitors, and resistors to create an effective LC network that can block out EMI/RFI signals. The filter\'s main component - the 500V capacitor - functions as the main filter, while the resistor and inductor cooperate to reduce impedance. This combination of components ensures maximum filtering performance and provides the necessary protection from intrusive EMI/RFI signals.

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