M1331-561K

DC Resistance (DCR):	230 mOhm Max
Height - Seated (Max):	0.145" (3.68mm)
Size / Dimension:	0.320" L x 0.125" W (8.13mm x 3.18mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 105°C
Ratings:	--
Frequency - Self Resonant:	210MHz
Q @ Freq:	41 @ 25MHz
Series:	M1331
Shielding:	Shielded
Current - Saturation:	440mA
Current Rating:	440mA
Tolerance:	±10%
Inductance:	560nH
Material - Core:	Iron
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: M1331-561K Application Field and Working Principle

The M1331-561K from Murata is a low DCR SMT power inductor that can be used in a variety of applications including power line filtering, bridge circuits, DC-DC converters, and general purpose electromagnetic interference (EMI) filtering. The power inductor is designed for use in high density circuits, and has an excellent self-resonance frequency due to its high permeability core material.The M1331-561K has a typical DCR of 72.3 mΩ and a contact temperature of 125°C. Its maximum DC resistance is 78.3 mΩ at 20A direct current. The inductor also has a maximum rated current of 27A and an inductance of 560 nH. The inductor is able to maintain a high current efficiency while providing excellent thermal and mechanical stability.The M1331-561K’s high permeability core material gives it excellent performance over a wide frequency range. This allows for a wide band filter application, making it suitable for different circuit designs. It also has an excellent high-frequency response with a quality factor of 0.67, making it suitable for high frequencies and high current applications.The power inductor has a characteristic frequency of 3.2MHz, enabling it to operate at lower noise levels than alternative inductors. This makes it effective for EMI filtering, as it is able to attenuate unwanted noise. The inductor also has a high saturation current of 40A, allowing it to operate in higher current applications.The M1331-561K is constructed with an epoxy resin and solderable nickel-plated steel construction, making it compatible with most surface mount technology (SMT) processes. This construction allows for a strong, reliable connection between the inductor and the circuit board, increasing the performance of the circuit.Overall, the M1331-561K is an excellent power inductor that combines low DCR, high saturation current, and wide frequency range in a compact SMT package. It is suitable for high density circuits, such as power line filtering, DC-DC converters, bridge circuits, and general purpose EMI filtering. The epoxy resin construction ensures a strong connection to the circuit board, while the solderable nickel-plated steel construction enables compatibility with various SMT processes.

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