ER1840-19JR

DC Resistance (DCR):	155 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 ~ 105°C
Ratings:	--
Frequency - Self Resonant:	65MHz
Q @ Freq:	30 @ 7.9MHz
Series:	ER1840
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	870mA
Tolerance:	±5%
Inductance:	3.6µH
Material - Core:	Iron
Type:	Molded
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: ER1840-19JR Application Field and Working Principle Fixed inductors are electrical components consisting of a coil of insulated wire wrapped around a core material. Fixed inductors are used to store energy in the form of a magnetic field for different applications. The ER1840-19JR is an example of a fixed inductor and it is typically used in power supplies, switching regulators, and filters. This article will discuss the application field and working principle of the ER1840-19JR fixed inductor.The ER1840-19JR fixed inductor is a component designed to be used in high frequency power circuits. It has a rated inductance of 27.8 uH and is designed for use in DC-DC converters, switching power supplies, and other applications requiring energy storage. The fixed inductor has a maximum operating frequency of 5MHz and is rated for an operating temperature range of -40 °C to +125 °C. The component also has a high thermal resistance of 2.9°C/W, allowing for better temperature regulation during operation.The working principle of the ER1840-19JR fixed inductor is based on Faraday’s law of induction. When a current is passed through the winding of the inductor, a magnetic field is generated. This magnetic field stores energy in the form of a magnetic flux, and the amount of stored energy is proportional to the magnitude of the current flowing through the inductor. This stored energy is released back into the circuit when the current flowing through the inductor decreases.The energy stored by the inductor is used for various types of applications. In power supplies, the waveform of the inductor’s output voltage can be changed depending on the load characteristics. The inductor’s output voltage is typically regulated by controlling the switching frequency of a power supply. In switching regulators, the inductor is used to store energy when the switch is in the off position. This stored energy is then released into the regulator when the switch is in the on position.In addition, the ER1840-19JR fixed inductor can be used in filters to reduce noise and to improve the quality of the signal. The inductor stores energy in the form of a magnetic field and this energy is then dissipated within the inductor. This reduces the amount of noise present in the circuit, allowing for a cleaner signal.In conclusion, the ER1840-19JR fixed inductor is a component designed for use in high frequency power circuits. It has a rated inductance of 27.8 uH and is designed for use in DC-DC converters, switching power supplies, and other applications requiring energy storage. The fixed inductor has a maximum operating frequency of 5MHz and is rated for an operating temperature range of -40 °C to +125 °C. The component also has a high thermal resistance of 2.9°C/W, allowing for better temperature regulation during operation. The inductor’s output voltage is typically regulated by controlling the switching frequency of a power supply, and it can also be used in filters to reduce noise and to improve the quality of the signal.

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