ACF451832-331-TD01

Current:	300mA
Height:	0.079" (2.00mm)
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)
Package / Case:	1812 (4532 Metric), 3 PC Pad
Mounting Type:	Surface Mount
Voltage - Rated:	50V
Applications:	Data Lines for Mobile Devices
Operating Temperature:	-25°C ~ 85°C
ESD Protection:	No
Values:	--
Series:	ACF
Resistance - Channel (Ohms):	0.15
Attenuation Value:	25dB @ 115MHz ~ 205MHz
Center / Cutoff Frequency:	--
Number of Channels:	1
Technology:	LC (T-Type)
Filter Order:	3rd
Type:	Low Pass
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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.Introduction Electromagnetic interference (EMI) and radio frequency interference (RFI) are both unwanted forms of interference that can afflict electrical devices and their associated circuitry. In order to reduce the effect of such interference, there are a number of EMI/RFI filters available, with styles ranging from the traditional LC, RC networks, to multi-stage discrete components. One example of such a filter is the ACF451832-331-TD01. This article examines the application fields and working principles of the ACF451832-331-TD01 EMI/RFI filter.Application Fields The ACF451832-331-TD01 is a ceramic filter designed for use in a wide variety of consumer electronics, such as mobile phones and communications technology. It is also suitable for use in automobile electronics, navigation systems, and other devices that could be susceptible to EMI or RFI. The filter is suitable for operation in the range of 0.18-7GHz, meaning it can provide adequate protection for a wide range of applications.Working Principle The ACF451832-331-TD01 filter utilises an LC network design, whereby two inductors and two capacitors are connected in parallel to form a large-scale filter network. This type of filter takes advantage of the way in which inductors can block out high frequency noise (such as EMI/RFI), while capacitors can block out the low frequency noise. The filter also uses special ceramic filter elements, which are more efficient than conventional LC components, allowing for increased filtering performance.When the filter is in operation, it allows an uninterrupted signal to pass from the antenna to the device, while attenuating interference signals. The signal passes through the filter without being significantly attenuated (as it is only allowed through the capacitor), while noise is reduced as it is blocked by the inductors. This effectively reduces the amount of unwanted interference in the system, allowing for improved signal quality and performance.ConclusionThe ACF451832-331-TD01 EMI/RFI filter is a highly efficient filter designed for use in a wide range of applications. It utilises an LC network design, comprising two inductors and two capacitors, which effectively reduce the amount of unwanted interference in the system. The filter is suitable for operation in a range of 0.18-7GHz, meaning it can provide adequate protection for a wide range of consumer electronics, as well as automobiles, navigation systems, and other devices susceptible to EMI or RFI.

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