BLM31KN471SH1L Filters

Series:	BLM
Packaging:	Tape & Reel (TR)
Part Status:	Active
Filter Type:	Power Line
Number of Lines:	1
Impedance @ Frequency:	470 Ohms @ 100MHz
Current Rating (Max):	4A
DC Resistance (DCR) (Max):	20 mOhm
Ratings:	AEC-Q200
Operating Temperature:	-55°C ~ 125°C
Package / Case:	1206 (3216 Metric)
Mounting Type:	Surface Mount
Height (Max):	0.071" (1.80mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)
Features:	--

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Ferrite Beads and Chips

Ferrite beads and chips are components that are commonly used to suppress electrical noise in electronic applications. Their electrical performance and cost make them ideal for suppressing EMI/RFI interference on sensitive power and signal lines. The BLM31KN471SH1L is one such component, a multilayer EMI/RFI suppression chip that is specifically designed and manufactured for use in automotive applications.The BLM31KN471SH1L is a low-loss chip with both high common-mode and differential-mode impedance, while providing superior impedance characteristics over a wide range of frequencies. Its frequency range covers from 100 kHz to 1 GHz, making it highly suitable for use in automotive electronic control units (ECUs).The application field of BLM31KN471SH1L includes automotive audio/video systems, in-vehicle network systems, engine control systems, navigation systems, and many other automotive ECUs. Its housing material is flame retardant and its lines are epoxy sealed, which makes it suitable for applications that require high heat and vibration resistance.The BLM31KN471SH1L chip is designed to provide EMI/RFI suppression without affecting the functionality and performance of the system. It has a high input impedance, which ensures that the signal lines are not affected by outside interference. The parallel capacitances are optimized for maximum noise suppression and the inductance is adjusted based on the application’s frequency range.The BLM31KN471SH1L chip is also designed for ease of installation and use. It comes with integrated mounting pins and clips that make the installation of the chip simple. The chip also has an open-loop configuration, which allows for quick and easy optimization and adjustment of the electrical parameters.The working principle of the BLM31KN471SH1L chip is similar to other ferrite beads and chips: the inductance of the chip works to restrict the current flow in the power or signal lines while the parallel capacitance of the chip serves to dissipate the electrical noise. This combination of inductive and capacitive impedances effectively reduces the electrical interference between and within the circuits.In conclusion, the BLM31KN471SH1L is an effective solution for suppressing EMI/RFI signals in automotive applications. Its wide frequency range, high impedances, and compact size make it ideal for automotive ECUs, audio/video systems, in-vehicle network systems, and navigation systems. Its design also makes it easy to install and optimize, which makes it well suited for a variety of applications.

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