BLM31KN801SZ1K

Part Status:	Active
Filter Type:	Power Line
Impedance @ Frequency:	800 Ohms @ 100MHz
Current Rating (Max):	2.5A
DC Resistance (DCR) (Max):	50 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)
Series:	BLM
Packaging:	Tape & Reel (TR)

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Ferrite Beads and Chips Ferrite beads and chips are electronic components used in many commercial and industrial products, as well as electronic circuits. They are typically applied in high-frequency circuits, generating a reactive element that suppresses high-frequency noise. One of these components, the BLM31KN801SZ1K ferrite bead, is a high-frequency noise filter component. The BLM31KN801SZ1K ferrite bead is characterized by its high frequency noise filtering capability, as well as its low power consumption. It can be applied in various electrical and electronic circuits to suppress high-frequency noise of 3 MHz to 1 GHz, with impedance ranging from 100 Ohm to 200 Ohm at 3 MHz. The peak operating current of the BLM31KN801SZ1K is 150 mA, and it has a low-resistance DC current capacity of 8 A. ApplicationsDue to its high frequency noise blocking capabilities and low power consumption, the BLM31KN801SZ1K is suitable for a wide range of applications. The most common use of BLM31KN801SZ1K is in datalines, such as in USB cables, where the ferrite bead works to suppress electromagnetic interference (EMI) and an enemy of data signal integrity. It is also applied in the power line, Wi-Fi, or wired ethernet network area. It is also used to suppress Shielded Differential Pairs (SDP) noise, thus protecting the delicate differential signals from external noise. The BLM31KN801SZ1K is also commonly used in sensitive industrial control circuits. This ferrite bead can be applied in medium-high speed data lines, such as in measuring and control circuits, industrial automation systems, and communication networks. It can also be applied in the power circuits of electric drive systems, to reduce noise emissions.Working Principle The BLM31KN801SZ1K ferrite bead works by creating a bottleneck for the high-frequency current, allowing low-frequency currents to pass unfettered. The current is first coupled into an inductor-like circuit, which works to reduce the amplitude of both AC and high-frequency noise signals. As the AC signal passes through the ferrite bead, its amplitude decreases. The high-frequency signals get blocked, while the low-frequency signals still remain at their original amplitudes. This allows the circuit to run more quietly and prevent interference from external EMI sources. The ferrite core material of the BLM31KN801SZ1K also works to reduce the emission of electro-magnetic radiation from the circuit. This helps reduce any potential disruption to signals in the circuit, since the emission of the EMI is blocked. The ferrite bead is also useful in preventing interference generated by one circuit from entering other circuits, thus reducing the risk of damaging delicate components. ConclusionThe BLM31KN801SZ1K is an ideal component for reducing high-frequency noise in a wide range of applications, due to its excellent noise filtering capabilities and low power consumption. With its low DC resistance and high-frequency current reactive element, the BLM31KN801SZ1K ferrite bead helps reduce the current flow in the high-frequency circuit, allowing only the low-frequency signals to pass. It is also effective in reducing external EMI sources and electro-magnetic radiation, thus ensuring signal integrity and preventing damage to components.

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