SRR1210A-2R2Y Inductors, Coils, Chokes

DC Resistance (DCR):	90 mOhm Max
Height - Seated (Max):	0.394" (10.00mm)
Size / Dimension:	0.472" L x 0.472" W (12.00mm x 12.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	AEC-Q200
Frequency - Self Resonant:	54MHz
Q @ Freq:	10 @ 7.96MHz
Series:	SRR1210A
Shielding:	Shielded
Current - Saturation:	12.2A
Current Rating:	9.5A
Tolerance:	±30%
Inductance:	2.2µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Fixed inductors, also known as choke coils or inductor coils, are electrical components used to generate a magnetic field when electrical current passes through them. The magnetic field generated is typically used to store energy and to filter electrical signals. The most common application of fixed inductors is in high-frequency electronic circuits. As a component in electric circuits, they serve multiple purposes such as storage of energy, transfer of power, signal filtering, signal distribution, signal amplification, or as an impedance transformation unit.The SRR1210A-2R2Y inductor is a surface-mountable fixed inductor with an inductance of 2.2 uH ±20%. It has an inner and outer core made of ferromagnetic material such as iron or steel and its operating temperature range is from -40 to +85°C. The SRR1210A-2R2Y is RoHS-compliant and has a maximum DC current rating of 1.2 A, with the DC resistance de-rating at 0.1uH/A.

Application

The SRR1210A-2R2Y fixed inductor is widely used in a variety of consumer, commercial and industrial electronic applications. It is often used in switching power supplies, DC-to-DC converters, high frequency switching regulators, fluorescent lighting ballasts, battery-charging circuits, defense and telecommunications equipment, and other applications that require efficient operation and high-frequency switching.The SRR1210A-2R2Y can also be used as an EMI filter in order to help reduce the amount of electrical noise generated by modern electronic devices. It can be used as an impedance matching device, allowing signals to be transmitted and received across different components in order to ensure a consistent signal level. It is important to note that although the SRR1210A-2R2Y fixed inductor can be used for these applications, there are other components which may be more suitable.

Working Principle

Fixed inductors operate using electromagnetic induction. When a current passes through a primary coil made from a ferromagnetic material, it produces a magnetic field. This magnetic field then induces a current in a secondary coil, which carries the current to the load. In the context of SRR1210A-2R2Y fixed inductors, the primary coil is the part of the inductor where the current passes through, and the secondary coil is the part which produces the induced current.When the SRR1210A-2R2Y operates, current passes through the primary coil and creates a magnetic field around it. The magnetic field then induces a current in the secondary coil, creating a voltage. The magnitude of this voltage is dependent on the strength of the primary current, the frequency of the alternating current, and the value of the inductance. When the primary current is removed, the voltage across the inductor decays over time. This process is known as an ‘inductive kick’, and it is one of the ways in which fixed inductors can be used for signal filtering.

Conclusion

The SRR1210A-2R2Y fixed inductor is a useful and versatile component for many electronic applications. It has a wide temperature range and can be used for a variety of purposes such as storage of energy, transfer of power, signal filtering, signal distribution, and signal amplification. Its working principle is based on electromagnetic induction, and it can produce a voltage when a current passes through its primary coil and creates a magnetic field. It is an important part of many high-frequency electronic circuits, and its use can help reduce the amount of electrical noise generated.

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