RLB0812-820KL

DC Resistance (DCR):	500 mOhm Max
Height - Seated (Max):	0.433" (11.00mm)
Size / Dimension:	0.264" Dia (6.70mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	2.52MHz
Operating Temperature:	-40°C ~ 105°C
Ratings:	--
Frequency - Self Resonant:	4.5MHz
Q @ Freq:	30 @ 2.52MHz
Series:	RLB
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	340mA
Tolerance:	±10%
Inductance:	82µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Bulk

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Introduction

Inductors or coils are electrical components that store energy in the form of a magnetic field when a current flows through them. Fixed inductors are one type of inductor, which are designed to produce a fixed inductance for any given AC or DC current in a circuit. RLB0812-820KL is a popular fixed inductor that is used in wide range of power management, signal conditioning, high frequency regulation, circuit protection, and filtering applications. This article will discuss the application field and working principle of the RLB0812-820KL.

Application Field of RLB0812-820KL

The RLB0812-820KL is a surface mount fixed inductor widely used in power systems thanks to its high power efficiency, low resistance, and small footprint. It is suitable for DC-DC converters that require high-current function, and it is also suitable for non-isolated DC-DC converters, LED lighting, and power supply modules.In addition, the RLB0812-820KL is capable of providing high-frequency isolation and signal regulation for signal conditioning applications such as audio, video, and embedded systems. Its low frequency filter helps reduce high-frequency noise and its highly accurate inductance helps ensure reliable system performance over time.Aside from these, the RLB0812-820KL is also used in circuit protection applications to provide protection against over-current, over-voltage, and over-heating. Its low resistance helps reduce power loss and potentially hazardous situation, and its low voltage drop helps improve efficiency. Furthermore, its low impedance helps reduce losses and maintain stable voltage levels.

Working Principle of RLB0812-820KL

The working principle of the RLB0812-820KL is based on Faraday’s Law of Electromagnetic Induction, which states that when electricity flows through a coil, it induces a magnetic field that is proportional to the strength of the current. This is why the RLB0812-820KL is able to produce a fixed inductance regardless of the AC or DC current in a circuit. The operation of the RLB0812-820KL follows the same principle as other fixed inductors. It consists of two parts: a winding core, which is a copper wire wrapped around a magnetic material such as ferrite; and the metal case, which helps protect the components from external damage. In operation, an electric current flowing through the winding core induces a magnetic field and this magnetic field then attracts and repels nearby electrons, producing the inductance.In the RLB0812-820KL, the winding core is encased in a metal case, which helps to prevent any external damage. The case also helps to prevent any air vents, which can cause eddy currents and help to reduce the overall inductance value. Additionally, the air gap between the core and the case helps to reduce the inductance value of the component.

Conclusion

The RLB0812-820KL is a surface mount fixed inductor that is used in a wide range of power management, signal conditioning, high frequency regulation, circuit protection, and filtering applications. It works on the principle of Faraday’s Law of Electromagnetic Induction, where current flowing through the coil induces a magnetic field that is proportional to the strength of the current. The metal case helps protect the components from external damage, as well as air vents and air gaps, which contribute to its fixed inductance value.

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