BLA31BD121SN4D Filters

Series:	EMIFIL®, BLA31
Packaging:	Tape & Reel (TR)
Part Status:	Active
Filter Type:	Signal Line
Number of Lines:	4
Impedance @ Frequency:	120 Ohms @ 100MHz
Current Rating (Max):	150mA
DC Resistance (DCR) (Max):	300 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)

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Ferrite Beads and Chips: BLA31BD121SN4D Application Field and Working PrincipleFerrite Beads and Chips are electronic components used for EMI (electromagnetic interference) filtering and suppression. They are usually used in applications such as power supply noise reduction, signal line noise filtering, RF activation control, logic circuit interference control, grounding, surge absorption and other noise suppression applications. The ferrite beads and chips provide excellent performance against EMI on a wide range of frequencies. The ferrite bead BLA31BD121SN4D is a ferrite device with exceptional features for applications which require high frequency noise suppression.The BLA31BD121SN4D ferrite bead is a chip-like component which is composed of a ceramic body, a core, and two or more leads. The core consists of a material which has magnetic properties, such as ferrite, manganese, or iron. The active part of the component is the ceramic body, which consists of a ceramic and metal compound which provides high electrical resistance. The two or more leads are connected to the core and the ceramic body and are used to transport the current.The working principle of the BLA31BD121SN4D ferrite bead is based on its ability to absorb and attenuate high frequency noise. The ferrite material in the core of the device provides high impedance to the high frequency currents, resulting in the elimination of EMI (electromagnetic interference). The ceramic body also contributes to the noise absorber, as it limits the passage of current to the metallic leads, preventing high frequency noise from being transmitted to the circuit.The BLA31BD121SN4D ferrite bead can be used in a variety of applications requiring noise suppression, such as power supply noise reduction, signal line noise filtering, RF activation control, logic circuit interference control, grounding, surge absorption and other noise suppression applications. In addition, the BLA31BD121SN4D ferrite bead offers excellent surge protection characteristics and are highly recommended for applications which require high frequency noise suppression.The BLA31BD121SN4D ferrite bead is cost-effective and highly efficient in providing EMI suppression at high frequencies. The noise attenuation performance of these types of beads is between 25 dB to 50 dB, depending on the type of ferrite material used. The BLA31BD121SN4D ferrite bead is avaible in a range of sizes and configurations, and can be easily installed in the circuit as the leads are all easy to get to, and the component itself is compact.The BLA31BD121SN4D ferrite bead is an ideal choice for applications which require suppression of high frequency noise. This type of bead is highly reliable and cost-effective, and provides excellent noise attenuation. The component is small and compact and can be easily installed in the circuit, making it an ideal choice for any application requiring noise suppression.

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Part Number	Manufacturer	Price	Quantity	Description