MIL1812-684J

DC Resistance (DCR):	30 Ohm Max
Height - Seated (Max):	0.134" (3.40mm)
Size / Dimension:	0.189" L x 0.134" W (4.80mm x 3.40mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	790kHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	3MHz
Q @ Freq:	30 @ 790kHz
Series:	MIL1812
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	82mA
Tolerance:	±5%
Inductance:	680µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed inductors are passive electrical components used in a variety of electrical circuits. They consist of wire, metal, ferrite, or other materials. These inductors act as coils that restrict the flow of electrical energy and can be used for a variety of tasks, such as the blocking of signals, or the reduction of electrical noise. One popular fixed inductor is the MIL1812-684J, an inductor designed to provide excellent performance and robust construction in harsh environments.
The MIL1812-684J is a fixed inductor with a maximum inductance of 0.68μH. This inductor has a maximum DC resistance of 4.8mΩ, making it suitable for low current and power circuits. The inductor is constructed of a magnetic core, composed of nickel-plated ferrite, and its winding is composed of enamel-coated copper wire. The inductance is held steady under different environmental temperatures, while still providing effective filtering at a wide range of frequencies. The MIL1812-684J is designed to provide reliable performance, without the risk of EMI (electromagnetic interference) or ESD (electrostatic discharge).
The MIL1812-684J can be used in a variety of applications, from low frequency AC filtering to high frequency frequency AC coupling. One such application is motor control circuits. The inductor provides a low DC resistance, meaning that it can be used in circuits with high current pulses and still perform efficiently. The inductor can also be used in power circuit smoothing, radio frequency circuits, and LED driven circuits. One of the most important applications for the MIL1812-684J is in solar inverters, where it helps to ensure stable power output and provide effective protection for sensitive electronics.
The MIL1812-684J works by generating a “back electromotive force” (BEMF), when current through its coils changes directions. This back EMF acts as a resistance to the current, reducing the amount of energy that can pass through the inductor coil. This effect is known as inductance, and it is what makes a fixed inductor such an effective device. The inductance of the MIL1812-684J can be changed through the addition of capacitors to its circuitry, allowing it to filter out different types of noise.
In summary, the MIL1812-684J is a high-performance fixed inductor designed to provide reliable performance and robust construction in a wide range of electrical circuits. Its features make it suitable for applications such as motor control circuits, power circuit smoothing, LED driven circuits, and solar inverters. This inductor works by generating a back EMF, which acts as an electrical resistance, reducing the amount of energy that can pass through its coil. The MIL1812-684J has become one of the most popular fixed inductors due to its excellent performance and reliability.

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