DA1206E300R-00

Series:	DA
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Filter Type:	--
Number of Lines:	4
Impedance @ Frequency:	30 Ohms @ 100MHz
Current Rating (Max):	500mA
DC Resistance (DCR) (Max):	300 mOhm
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Package / Case:	1206 (3216 Metric), Array, 8 PC Pad
Mounting Type:	Surface Mount
Height (Max):	0.032" (0.80mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)

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FROM : Ferrite Beads and ChipsFerrite beads and chips are essential for modern technologies due to the effects of electromagnetic interference (EMI). Radio-frequency devices increasingly require ferrite components to ensure that digital signals aren’t disrupted or degraded by other sources. The DA1206E300R-00 is a popular common-mode choke from Murata. This component has numerous applications, ranging from IEC-60250-3 DC motor control systems to automotive applications. Here, we explore the application field and working principles of the DA1206E300R-00.Application FieldThe DA1206E300R-00 can be used in a variety of applications. In a motor control system, it can reduce both noise and current leakage. The component can also be used in stepper motor drives, brushless DC motors, inverters, and adjacently connected circuits. Automotive applications include transmitting data within a distributed electric system, reducing instance of EMI, and filtering power sources. In aviation, the DA1206E300R-00 can suppress interference between navigation and communications systems. At the highest level, this component forms part of the design for airplanes in order to comply with electromagnetic compatibility (EMC).Working PrincipleThe DA1206E300R-00 features an inductor winding mounted on a thermoplastic core. This is the central element of the choke, and provides the desirable electrical characteristics, whatever the application. Essentially, these components provide a low impedance path for a common-mode signal like a low frequency line current. The magnetic field created by the inductor winding creates a circulation path that acts on magnetic flux, opposing unwanted voltage. This in turn eliminates or reduces noise.Initially, there may be some voltage across the inductor, but as its core can’t store energy, the frequency of the signal must be held constant. But this desirable aspect is also slightly detrimental. In a pulse width modulation (PWM) application, the inductor may not prevent the circulation of current above a particular frequency. When choosing the DA1206E300R-00, it’s important to remember that its core won’t store energy, and therefore shouldn’t be used with high saturation pulses.ConclusionThe key feature of the DA1206E300R-00 is that the inductor winding on a thermoplastic core acts with a low impedance path for common-mode signals like low frequency line currents. This component is compatible with a wide variety of devices, from motor control systems to brushless DC motors, IEC-60250-3 DC motors, and adjacently connected circuits. Perhaps the most important feature is the elimination of EMI that’s the result of the creation of a magnetic field by the inductor winding. As long as frequency is kept constant, this component ensures the desired electrical characteristics depending on the application.

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