S1210-121J

DC Resistance (DCR):	170 mOhm Max
Height - Seated (Max):	0.101" (2.57mm)
Size / Dimension:	0.138" L x 0.105" W (3.51mm x 2.66mm)
Supplier Device Package:	1210 (3225 Metric)
Package / Case:	1210 (3225 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	350MHz
Q @ Freq:	40 @ 25MHz
Series:	S1210
Shielding:	Shielded
Current - Saturation:	--
Current Rating:	1.062A
Tolerance:	±5%
Inductance:	120nH
Material - Core:	Iron
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed inductors refer to the inductors that are used as energy storage devices in electric circuits. The S1210-121J is a kind of fixed inductor, which is specially designed to provide power for a variety of industrial and commercial applications. This inductor has a power rating of 2.5A, a height of 10mm, and a diameter of 10.3mm. It is made of a ferrite core with a wire winding around it, and is categorized as a radial-leaded type of inductor.
Applications
Fixed inductors such as the S1210-121J are widely used in a variety of applications in both industrial and commercial settings. Some of the most common applications that can benefit from this type of inductor are power supply filtering, noise reduction, and DC/DC conversion. In industrial settings, the inductor can be used in motor-control circuits, as well as in inverter and converter circuits. In addition, it can be used in oscillator circuits and audio circuits for filtering and signal conditioning.
Working Principle
The working principle of a fixed inductor such as the S1210-121J is based on the fact that they act as energy storage devices. When an alternating current (AC) passes through the inductor, it stores energy in the form of a magnetic field in its core. This energy is then released back into the circuit when the current flowing through the inductor drops. The energy released by the inductor helps to maintain the current within the circuit and helps to reduce any spikes in the current caused by sudden changes in the input voltage.
The other function of the inductor is to help reduce any noise generated by the circuit. By providing a path for the current to flow through, the inductor helps to reduce the amount of noise generated by the other components in the circuit. This has the effect of making the circuit run more smoothly and reducing the risk of damage to the other components.
Conclusion
The S1210-121J is a type of fixed inductor that is used in a variety of industrial and commercial applications. It is designed to provide power, reduce noise, and filter signals in electric circuits. It works by storing energy in its core in the form of a magnetic field. When this field is released back into the circuit, it helps to maintain the current within the circuit and reduce noise.

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