BK2125HS750-TV Filters

Series:	BK
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Filter Type:	--
Number of Lines:	1
Impedance @ Frequency:	75 Ohms @ 100MHz
Current Rating (Max):	1A
DC Resistance (DCR) (Max):	100 mOhm
Ratings:	AEC-Q200
Operating Temperature:	-55°C ~ 125°C
Package / Case:	0805 (2012 Metric)
Mounting Type:	Surface Mount
Height (Max):	0.041" (1.05mm)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)

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Ferrite Beads and Chips

Ferrite beads and chips are a type of magnetic material commonly used in electronics, and a good example of this is the BK2125HS750-TV. To understand how they work and their application field, let\'s first look at their structure.

Structure

Ferrite beads and chips are composed of a ferrite core, which is an oxide of iron and other elements, and has a high electrical resistance and can be magnetized in both directions. They also have an insulated wound coil of fine copper wire encased in a plastic casing, and this wound coil is connected to electrical terminals, either on the device or on the PCB (Printed Circuit Board).

Application Field

The BK2125HS750-TV is used in many applications, including radios, television receivers, and cellular phones. It is also used in computer applications such as Ethernet cards, and in many other applications where EMI (electromagnetic interference) needs to be eliminated. It can also be used in power supply applications to reduce and suppress conducted and radiated emissions.

Working Principle

The BK2125HS750-TV works by absorbing electromagnetic radiation and dissipating the energy as heat. It does this by creating a magnetic field when an electrical current is passed through the coil. This magnetic field creates an inductive loop which acts as an additional path for the EMI radiation to follow. The radiation is then channeled through the ferrite core, which provides a high-resistance path for the current, thereby dissipating the energy as heat.The ferrite beads and chips are used to eliminate interference on the frequencies between 30 MHz and 1 GHz, allowing for the signal to remain clear and intact. In addition, the inductive loop created by the magnetic field helps to reduce reflected radiation caused by impedance mismatch at the ends of the circuit. This reduces signal reflections thus improving signal clarity.

Conclusion

The BK2125HS750-TV is a useful component used in a variety of applications, including those where EMI needs to be eliminated or reduced. It works by absorbing electromagnetic radiation and dissipating the energy as heat, thereby reducing the amount of interference on the circuit. It can also be used to reduce reflections on the circuit, thus improving signal clarity. As a result, it is an important component of many electronic devices and systems.

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