MMZ2012Y102BTD25 Filters

Series:	MMZ
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Filter Type:	Signal Line
Number of Lines:	1
Impedance @ Frequency:	1 kOhms @ 100MHz
Current Rating (Max):	500mA
DC Resistance (DCR) (Max):	300 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

An MMZ2012Y102BTD25 ferrite bead is a specialized component that acts as an electrical filter. It is employed in a wide variety of electronics and radio frequency (RF) applications that require selective signal blocking. Since its discovery in 1903, ferrite bead technology has progressed significantly, leading to more efficient and effective electrical filtering solutions.

What is an MMZ2012Y102BTD25?

An MMZ2012Y102BTD25 is a type of ferrite bead specifically designed to operate in the frequency range of 10-6000 MHz. It is composed of an encased bead of ferric oxide which is composed of a combination of two or more rare earth elements. The bead is mounted onto a lead frame and then dipped into a proprietary sealing compound to create a low-inductance, air core capacitor.

Application Field

The MMZ2012Y102BTD25 is ideal for high frequency power supplies, automotive, avionics, and catalytic reformers. The bead\'s ability to effectively filter out high frequency interference makes it ideal for electronic designs that require minimal disruption when exposed to high frequencies or strong RF fields, which can disrupt circuitry and cause electromagnetic interference (EMI). Additionally, the bead is a popular choice for RF applications due to its wide bandwidth and low insertion loss.

Working Principle

The core of an MMZ2012Y102BTD25 functions in a similar manner to an inductor in that it exhibits self-resonance, or LC resonance. This self-resonance is caused by a buildup of electrical charge inside the ferrite bead due to current in the form of radio frequency (RF) energy flowing through it. The buildup of electrical charge causes the bead to “ring” or vibrate at a specific frequency, which produce a resonance frequency that acts to absorb any unwanted RF energy.The bead will pass any signal below its resonance frequency, while any signal above the frequency is absorbed and blocked. This allows the MMZ2012Y102BTD25 to act as a band-pass filter, and act as an efficient electrical filter and noise suppression device.

Advantages

The MMZ2012Y102BTD25 has many advantages over other types of ferrite beads. First, it has a wide bandwidth, allowing it to filter out a wide range of frequencies. Second, it has low insertion loss, which means that it does not reduce the signal strength when a signal passes through it. Lastly, it is highly resistant to temperature variations and to moisture, making it an ideal choice for applications in harsh environments.

Disadvantages

Despite the various advantages of the MMZ2012Y102BTD25, it does come with certain disadvantages as well. One of the main disadvantages is that because the bead is air-core, it has a higher inductance than standard ferrite beads, making it more expensive. Additionally, it has a higher self-resonance frequency, which reduces its effectiveness in some applications.

Conclusion

The MMZ2012Y102BTD25 is an excellent choice for a wide variety of RF filtering applications. With its wide bandwidth, low insertion loss, and resistance to harsh environments, the bead is well-suited for many applications. However, it does come with some drawbacks, such as its higher cost and lower self-resonance frequency. Despite these drawbacks, the MMZ2012Y102BTD25 is still a great choice for any application requiring efficient RF filtering.

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