DC Resistance (DCR):	23 Ohm Max
Height - Seated (Max):	0.295" (7.50mm)
Size / Dimension:	0.307" Dia (7.80mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	1kHz
Operating Temperature:	-30°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	RL875S
Shielding:	Shielded
Current - Saturation:	--
Current Rating:	89mA
Tolerance:	±10%
Inductance:	6.8mH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Bulk

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Introduction

Fixed inductors are becoming an increasingly popular method of providing storage, smoothing, or blocking of electrical energy in a variety of applications. The RL875S-682K is an example of a fixed inductor, commonly used as an inductor in DC-DC power converters and as a filter in regulated AC power supplies. In this article, we will discuss the various applications and principles of operation of the RL875S-682K.

Applications

The RL875S-682K is a high-current, fixed inductor commonly used in applications where storage or filtering of electric energy is required. In DC-DC converters, the inductor is used in conjunction with an SCR, switching regulator, or switching power supply to create a switchable power source. When current is required, the SCR or switching regulator will open, and the RL875S-682K will provide a path for current to flow from the input voltage source to the output voltage source. In regulated AC power supplies, the RL875S-682K can be used to filter the incoming voltage, allowing for the attenuation of high frequency noise and ripple voltage. The RL875S-682K can also be used as a noise filter in audio applications. It is especially useful in consumer audio devices, where power supplies may be noisy or contain electromagnetic disturbances. The inductor is also used to provide lagging, or out-of-phase, current in motor or lighting circuits, preventing potentially damaging currents from being propagated through the system.

Working Principle

The RL875S-682K is a fixed inductor, meaning that it has a predetermined inductance value that is constant over the frequency range of operation. This inductance value is determined by the construction of the inductor itself and cannot be altered or adjusted in any way. The RL875S-682K consists of a coil of insulated wire wound around a magnetic core, providing the inductance that is required in different applications.When current is passed through the RL875S-682K, a magnetic field is created that opposes any attempts to reduce the current, creating a "back-EMF" or voltage spike that is proportional to the rate of change of current. This "back-EMF" provides a constant path for the current to flow, allowing it to be filtered or buffered as desired. In DC-DC converters, it also provides a stable voltage source, allowing for the production of regulated DC power. In regulated AC power supplies, the back-EMF of the RL875S-682K is used to filter incoming high-frequency noise, providing a clean and accurate voltage source for sensitive consumer electronic devices. In audio applications, the RL875S-682K can also be used to reduce unwanted low-frequency noise, allowing for the production of a clear and distortion-free audio signal.

Conclusion

The RL875S-682K is an excellent choice for applications where energy storage, smoothing, or blocking is required. Its back-EMF provides a stable voltage source for DC-DC converters and a filter for regulated AC power supplies, allowing for clean and accurate power in a variety of applications. It can also be used as a noise filter in audio applications, providing pristine and distortion-free sound. Whatever your requirements, the RL875S-682K is a great choice for reliable and accurate power.

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