SDR0403-820KL

DC Resistance (DCR):	1.27 Ohm Max
Height - Seated (Max):	0.126" (3.20mm)
Size / Dimension:	0.177" L x 0.157" W (4.50mm x 4.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	10MHz
Q @ Freq:	25 @ 2.52MHz
Series:	SDR0403
Shielding:	Unshielded
Current - Saturation:	580mA
Current Rating:	420mA
Tolerance:	±10%
Inductance:	82µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Fixed inductors are devices used to store energy in the form of magnetic fields, offering a variety of functions in electronic circuits. One of the most popular types of fixed inductors is the SDR0403-820KL, with features such as high inductance, low DC resistance and low profile. This article will discuss the application field and working principles of the SDR0403-820KL, including its construction, applications and limitations.

Construction and Overview

The SDR0403-820KL is a fixed inductor, made up of a ferrite core wound with copper wire. It has a variety of features and a size that makes it suitable for a wide range of applications. The SDR0403-820KL is designed to fit into compact spaces, such as circuit boards and other electronic components. It features high inductance and a low DC resistance rating, making it an ideal choice for use in a variety of circuits.

Applications of the SDR0403-820KL

The SDR0403-820KL has a versatile range of applications. It can be used in an array of different circuits and systems, such as:• Connecting power amplifiers and speakers• Filtering audio signals• Reducing EMI/RFI noise• Reducing power-supply noise• Tuning antennae• Matching impedance in radio-frequency circuits• Improving power efficiency in AC/DC converters• Helping to reduce costs in large-scale production work

Working Principle of the SDR0403-820KL

The SDR0403-820KL works by storing energy in the form of a magnetic field. When an electric current passes through the device, a magnetic field is created. This field induces an opposing voltage in the wire, creating what is known as an inductance. This is done by allowing the magnetic field to collapse and build up an opposing voltage.When the current is removed, the magnetic field collapses and induces a negative voltage in the windings. This is known as the back EMF or counter electromotive force (CEMF), and it is what allows the SDR0403-820KL to store energy and release it when the circuit is completed. This process is what makes the SDR0403-820KL so useful in a variety of applications.

Benefits and Limitations of the SDR0403-820KL

The SDR0403-820KL has a number of benefits that make it ideal for applications such as power amplifiers and speakers, audio signal filtering and noise reduction. These benefits include its high inductance, low DC resistance and small size. It also has a relatively low cost, making it more cost-effective than some other types of fixed inductors.However, the SDR0403-820KL also has some limitations. Its small size means that it is not well-suited for high-power applications. It also has a relatively low inductance-to- voltage ratio, which means that it is not ideal for high-voltage circuits.

Conclusion

The SDR0403-820KL is a versatile fixed inductor with a wide range of applications. Its small size, high inductance and low DC resistance make it an ideal choice for a variety of circuits and systems. The device works by storing energy in the form of a magnetic field and releasing it when the circuit is completed. It also has a relatively low cost, making it a cost-effective solution for many applications. However, the SDR0403-820KL has some limitations, such as its small size and low inductance-to-voltage ratio, which may make it unsuitable for some applications.

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