BLM18PG221SN1D

Series:	EMIFIL®, BLM18
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Filter Type:	Power Line
Number of Lines:	1
Impedance @ Frequency:	220 Ohms @ 100MHz
Current Rating (Max):	1.4A
DC Resistance (DCR) (Max):	100 mOhm
Ratings:	--
Operating Temperature:	-55°C ~ 125°C
Package / Case:	0603 (1608 Metric)
Mounting Type:	Surface Mount
Height (Max):	0.037" (0.95mm)
Size / Dimension:	0.063" L x 0.031" W (1.60mm x 0.80mm)

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Ferrite beads and chips are important components in our electronics applications. When used properly, they can provide reliable results that are both efficient and cost effective. The BLM18PG221SN1D is a ferrite bead suitable for high frequency signal line application, which is also commonly referred to as a power inductor. In this article, we will discuss the application field and working principle of the BLM18PG221SN1D ferrite bead. The BLM18PG221SN1D ferrite bead is a compact, low profile component that is specifically designed for applications which require minimal board space and high frequency signal line noise suppression. It can be used in applications which require noise immunity and interference suppression such as power line communications, automotive ECU, LED illumination systems, and otherwise. It is also used in electronic circuits that require high frequency signal line noise suppression in order to inhibit interference and reduce radiation.The BLM18PG221SN1D ferrite bead is composed of several distinct components which work together to provide reliable performance. The components consist of a ferrite core, an inner lead and an outer lead. The ferrite core is made of a highly porous material which has high permeability and permittivity properties. This material is capable of absorbing electromagnetic energy and storing it in its core. The inner lead is connected to the ferrite core and suppresses harmful high frequency signals from entering the device, while at the same time allowing low frequency signals to pass through unattenuated. The outer lead, also known as the shield lead, is connected to the ferrite core and serves the purpose of dissipating the electromagnetic interference to the environment.The operation of the BLM18PG221SN1D ferrite bead is based on the principle of “bulk power dissipation”. This principle states that the amount of energy that is dissipated among the circuit components is proportional to the resistance of the core and the surrounding signal lines. As the resistance of the core and the signal lines increases, the amount of energy that is dissipated increases. This process results in the suppression of high frequency signals by limiting the amount of energy that is allowed to enter the device, while allowing low frequency signals to pass through with minimal attenuation.In conclusion, the BLM18PG221SN1D ferrite bead is an efficient and effective component for high frequency signal line noise suppression. Its application fields range from power line communications, automotive ECU, LED illumination systems, and more. Furthermore, it operates based on the principle of “bulk power dissipation” which suppress the harmful high frequency signals while allowing low frequency signals to pass through with minimal attenuation.

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