S0402-22NF3S

DC Resistance (DCR):	350 mOhm Max
Height - Seated (Max):	0.030" (0.76mm)
Size / Dimension:	0.043" L x 0.025" W (1.09mm x 0.64mm)
Supplier Device Package:	0402 (1005 Metric)
Package / Case:	0402 (1005 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	250MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	2.8GHz
Q @ Freq:	24 @ 250MHz
Series:	S0402
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	400mA
Tolerance:	±1%
Inductance:	22nH
Material - Core:	Alumina
Type:	Wirewound
Part Status:	Active
Packaging:	Bulk

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Introduction to fixed inductors
Fixed inductors are passive components that store magnetic energy in their coils. They are used in a variety of electronic circuits, such as radio and TV receivers, power supplies, audio amplifiers, and digital circuitry. Inductors are important components in the fields of power supply, switch mode power supplies, and filters.

S0402-22NF3S application field and working principle
S0402-22NF3S is a fixed inductor. It has a low profile surface-mount design and a Ferrite core for high current and high temperature applications. This part has been designed to provide high inductance values in a small package. It provides a cost-effective solution for many applications.

The S0402-22NF3S is commonly used in applications such as power supplies, switch mode power supplies and filters. It can also be used in circuits where high current or high temperature is required. This inductor is built of a Ferrite core for high current and high temperature applications and a low profile surface-mount design. Its construction makes it suitable for use in a variety of environments.

When an alternating current (AC) passes through an inductor, the field generated by the current induces a voltage in the coil. This voltage acts to oppose the current, which is referred to as a self-inductance effect. This effect is not present in a capacitor, where the changing voltage induces a current instead. Thus, an inductor can be used as a low-pass filter, suppressing high-frequency AC while allowing low frequency signals to pass through.

The S0402-22NF3S can also be used to reduce the ripple of a switched-mode power supply, a process whereby an AC voltage is made to produce DC current. The inductor works by reducing the ripple in the output current by storing energy. This stored energy is released as the switch opens or closes, helping to reduce the output ripple voltage.

The S0402-22NF3S is also commonly used as an impedance-matching device. Impedance matching is the process by which a signal is optimized for transmission, by balancing its source and load impedances. Inductors are particularly useful in this process, as they can help to reduce "reflections" or signal losses.

Conclusion
The S0402-22NF3S is a fixed inductor with a low profile surface-mount design and a Ferrite core for high current and high temperature applications. It is commonly used in a variety of applications, such as power supplies, switch mode power supplies, filters, impedance matching, and low-pass filtering. By understanding the working principle of inductors, we can better choose the right inductor for the job.

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