MI1812K121R-00

Series:	MI
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Filter Type:	--
Number of Lines:	1
Impedance @ Frequency:	120 Ohms @ 100MHz
Current Rating (Max):	1.5A
DC Resistance (DCR) (Max):	55 mOhm
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Package / Case:	1812 (4532 Metric)
Mounting Type:	Surface Mount
Height (Max):	0.065" (1.65mm)
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)

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Ferrite Beads and Chips - MI1812K121R-00 Application Field and Working Principle

Ferrite beads and chips are components used to provide shielding to electronic components against electromagnetic interference (EMI). The MI1812K121R-00 is a ferrite bead used in high-frequency circuits, such as in cell phone antennas, and its application field and working principle are discussed in this article.The MI1812K121R-00 is a high-frequency ferrite bead intended for use in high-frequency circuits, such as those found in mobile phones. This device helps prevent EMI interference to other devices in the circuit or nearby. It attenuates signals in the range of 1 MHz to 5 GHz, and its resistance level can reach up to 28.5 ohms.This device is composed of an inner core made of soft ferrite and a body of dielectric material. The inner core is made of a ferrite material that can absorb and reduce interference to other radio frequencies in the area. This makes it ideal for use in mobile phones and other wireless devices that may encounter interference from other radio devices. The working principle of the ferrite bead is based on two core concepts - inductance and impedance. When radio frequency current flows through the ferrite beads, a magnetic field will form around them, introducing an inductance. This inductance then causes current to be resisted by the ferrite bead and introduces an impedance to it. This impedance reduces the amount of current that can flow through the device, and therefore reduces the amount of interference that is created or received.In addition to its use in mobile phones and other wireless devices, the MI1812K121R-00 can also be used in other high-frequency systems, such as RF signal sources and antennas, as well as in medical and automotive applications.Overall, the MI1812K121R-00 ferrite bead is an excellent device for use in high-frequency circuits. It has the ability to attenuate unwanted RF signals, and is composed of a soft ferrite core and body of dielectric material. Additionally, its working principle is based on inductance and impedance, thereby enabling it to reduce interference and provide a higher level of operation.

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