Series:	EMIFIL®, BLA31
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Filter Type:	--
Number of Lines:	4
Impedance @ Frequency:	120 Ohms @ 100MHz
Current Rating (Max):	150mA
DC Resistance (DCR) (Max):	200 mOhm
Ratings:	--
Operating Temperature:	-55°C ~ 125°C
Package / Case:	1206 (3216 Metric), Array, 8 PC Pad
Mounting Type:	Surface Mount
Height (Max):	0.039" (1.00mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Ferrite Beads and Chips

Ferrite beads and chips are among the most patented radio frequency interference (RFI) suppression products. They are primarily used to reduce the amount of current or voltage spikes in electronic equipment, thus helping protect it from damage. The BLA31AG121SN4D is an example of a ferrite bead and chip. In this article, we’ll look at its application and working principle.

Ferrite Beads

Ferrite beads are small cylindrical devices made of ferrite material and containing iron, zinc oxide, and other substances. They have a high magnetic permeability and act as inductors. Ferrite beads are preferred due to their ability to reduce high-frequency voltage and current spikes in electronic equipment without adversely affecting the signal quality.

Application of BLA31AG121SN4D

The BLA31AG121SN4D is designed to reduce electromagnetic interference (EMI) and radio frequency interference (RFI). It is often used in automotive, telecommunication, computing, medical and consumer electronics applications. It can be used to protect sensitive electronic components such as microprocessors, oscillators, and voltage regulators from damage due to voltage and current surges. It is also used to reduce battery drain and electromagnetic interference (EMI) from other sources such as cell phones, laptops, and televisions.

The Working Principle of the BLA31AG121SN4D

The BLA31AG121SN4D operates on the principle of inductive reactance. It contains a ferrite core that has a high electrical resistance, which allows it to impede the flow of alternating current (AC). This impedes the current, creating a “barrier” between the two conductors. The bead also prevents the buildup of a large voltage spike by stopping the high frequency currents from flowing across the component.When the current is blocked, it will dissipate as heat within the bead, thus limiting the amount of current that flows through the system and protecting the sensitive electronic components.

Advantages

The BLA31AG121SN4D ferrite bead has several advantages. It is small and lightweight, so it is easy and inexpensive to install and can be easily integrated into electronic designs. It is also not affected by temperature or humidity, so it is suitable for use in a wide variety of environments and applications. Finally, it is also effective in a wide frequency range and provides consistent RFI suppression throughout its lifetime.

Conclusion

The BLA31AG121SN4D is an example of a ferrite bead and chip used to reduce EMI and RFI in electronic equipment. Its small size, lightweight, and temperature and humidity resistance make it ideal for use in a variety of applications. Its inductive reactance works to stop high frequency currents, dissipating them as heat instead of allowing them to damage vulnerable components. With all these features, the BLA31AG121SN4D is an effective and reliable RFI suppressor.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description