SDS850R-274M

DC Resistance (DCR):	1.4 Ohm Max
Height - Seated (Max):	0.189" (4.80mm)
Size / Dimension:	0.413" L x 0.315" W (10.50mm x 8.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	SDS850R
Shielding:	Shielded
Current - Saturation:	--
Current Rating:	270mA
Tolerance:	±20%
Inductance:	270µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed inductors play an important role in power supplies, circuit filtering, and other applications. The SDS850R-274M is one of the most popular fixed inductor products on the market. This article will explore the application field and working principle of the SDS850R-274M.ApplicationsThe SDS850R-274M is specifically designed for high frequency (HF) transformer coupled circuits. It has a wide range of applications in HF radios, low power amplifiers, pulse drivers, and switching regulators. Additionally, it is a great choice for any circuit that requires precise pulse width modulation.The SDS850R-274M also has various advantages over traditional inductors. It has a very low DC resistance, which means it does not require an input filter capacitor when used in circuit filtering applications. Furthermore, this inductor has a high current capacity, which makes it suitable for use in high-current circuit designs.Working PrincipleThe SDS850R-274M fixed inductor consists of three parts: a closed magnetic core, a coil of wire, and a coil former. When an alternative current is applied to the core, the core and the coil of wire create a magnetic field. This field in turn creates an electric current, which produces a magnetic field in the opposite direction. Through this cyclic process, the inductor creates a constant magnetic field.The SDS850R-274M can also be used in switched mode power supplies (SMPS). In this application, the inductor acts as a storage device that stores excess energy when the load is not needed and then releases it when the load is present. This helps the power supply maintain a constant output voltage, regardless of the load conditions.ConclusionThe SDS850R-274M fixed inductor is an ideal choice for HF transformer coupled circuits, low power amplifiers, pulse drivers, switching regulators, and SMPS designs. Its low DC resistance and high current capacity make it an excellent choice in many applications. Additionally, its ability to create a constant magnetic field and store excess energy when needed make it an invaluable part of any circuit design.

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