4922-03K

DC Resistance (DCR):	20 mOhm Max
Height - Seated (Max):	0.230" (5.84mm)
Size / Dimension:	0.520" L x 0.250" W (13.21mm x 6.35mm)
Supplier Device Package:	--
Package / Case:	2-SMD
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	4922
Shielding:	Unshielded
Current - Saturation:	4.45A
Current Rating:	4.45A
Tolerance:	±10%
Inductance:	1.5µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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1. Introduction to fixed inductors, particularly 4922-03K

Fixed inductors are electrical components integral to many circuits’ functions, and their presence can be seen all over modern technology. A type of inductor in particular, the 4922-03K, is widely used in a range of applications due to its specific characteristics. This paper will discuss the structure, application field, and the working principle of this device.

2. Structure of 4922-03K fixed inductors

The 4922-03K is a relatively simple component, consisting of a pair of cylindrical, nonmagnetic sheaths. The inner sheath is made of a conductive material like copper, which is then filled with a winding of wire. On either side of the winding are two small cores made of soft iron, providing magnetic permeability to the device. This construction creates a double-doing inductor, where the windings are one inner and one outer set, winding in opposite directions. This allows for the creation of a high inductance value with a relatively small overall size.

3. Application Field of 4922-03K fixed inductors

For most applications, the 4922-03K has several advantages which makes it suitable for certain tasks. Firstly, it is relatively small, which makes it suitable for compact designs. Additionally, it is a double-winding type inductor, allowing for high inductance values in a limited space. Furthermore, it is particularly efficient, boasting an inductance versus current value that is higher than many other types of inductor. As a result, this device is widely used in relay circuits, power control systems, low-frequency signal amplifying circuits, and many other applications.

4. Working Principle of 4922-03K fixed inductors

The working principle of the 4922-03K device is relatively simple. To begin, the conductor is fed an alternating current (AC) signal. This causes the copper wire inside the inductor to form a magnetic field in response to the current. The two small magnetic cores then act to transform this magnetic field into a flux, which then cuts across the wire. This flux generated in the wire induces an electrical voltage – an electromagnetic induction – which works together with the flux to create a stronger magnetic field. This induction voltage then causes a counter EMF, further strengthening the magnetic field and preventing the AC from passing across the wire. This self-regulating effect weakens the current, creating resistance and filtering out some of the high-frequency signals.In conclusion, the 4922-03K fixed inductor is a useful and versatile electrical component, allowing for efficient inductance and current control in small, compact devices. Its structure is simple yet highly effective, and its working principle is essential to the operation of many modern technological devices.

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