ER1840-12KR

DC Resistance (DCR):	485 mOhm Max
Height - Seated (Max):	--
Size / Dimension:	0.187" Dia x 0.437" L (4.75mm x 11.10mm)
Supplier Device Package:	--
Package / Case:	Axial
Mounting Type:	Through Hole
Inductance Frequency - Test:	7.9MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	170MHz
Q @ Freq:	30 @ 7.9MHz
Series:	ER1840
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	720mA
Tolerance:	±10%
Inductance:	1.5µH
Material - Core:	Phenolic
Type:	Molded
Part Status:	Active
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fixed Inductors: ER1840-12KR Application Field and Working Principle

Fixed inductors are electrical components consisting of a wire, conductor, or other material wound around a given core material. They are passive devices primarily used in the electrical field for energy storage and filtering applications. One of the most common types of fixed inductors is the ER1840-12KR. This article will provide an overview of its application field and working principle.

Applications

The ER1840-12KR is a unique type of fixed inductor that has a variety of applications. It is commonly used in filter applications, voltage regulators, pulse transformers, and signal generators. These fixed inductors are particularly useful in power supply circuits due to their ability to store energy and filter noise. ER1840-12KR inductors are also often incorporated into more complex circuits for further noise and power filtering applications. In addition to these standard uses, the ER1840-12KR is also highly sought after for its low-phase-noise performance. As such, it is commonly used in high-precision RF circuits that require very low levels of noise.

Design

The ER1840-12KR is composed of two magnetic cores with a ferrite coil wound between them. The coil is housed in a shielded case and secures the two cores together. This design is quite simple yet highly efficient, as the coil and core combination provides the inductor with optimal shielding from noise and power losses. The ER1840-12KR is available in a variety of sizes and configurations, allowing it to be adaptable for various applications. Its wide-surface-area-structure also lends itself to be a more effective inductor in cases where the user needs significant noise nuisance suppression.

Working Principle

Fixed inductors, such as the ER1840-12KR, work according to Faraday’s Law. According to this law, a changing electric field produces a changing magnetic field and vice versa. In the case of the ER1840-12KR, the core serves as the ‘body’ of the inductor while the coil serves as the component that creates the electromagnetic field. When an AC current is applied to the coil, it produces an electromagnetic field that interacts with the core. This interaction between the core and coil produces a secondary EMF, which is then linked to the primary source, and hence forming a magnetic circuit. This primary-secondary loop is known as an induction loop, and it is this induction loop that serves as the basis for the ER1840-12KR’s energy storage and filtering capabilities.

Conclusion

The ER1840-12KR is a popular fixed inductor whose primary applications can be found in filter and energy storage applications. Its design is quite simple, but effective, consisting of a ferrite-core coil wound between two magnetic cores. It is used in a variety of configurations and shapes, and is sought after for its high-precision performance. Finally, its working principle is based on Faraday’s Law of electromagnetic induction, where an EMF is produced by the interaction of the primary and secondary sources.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description