PM42S-3R3

DC Resistance (DCR):	110 mOhm Max
Height - Seated (Max):	0.079" (2.00mm)
Size / Dimension:	0.189" L x 0.189" W (4.80mm x 4.80mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	7.96MHz
Operating Temperature:	-30°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	PM42S
Shielding:	Shielded
Current - Saturation:	--
Current Rating:	1.04A
Tolerance:	±30%
Inductance:	3.3µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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< html >< body >< h2 > Fixed Inductors < p > The PM42S-3R3 belongs to a group of electrical components called fixed inductors, also known as chokes or coils. These components are found in many types of electronic circuits, including power supplies, radio frequency (RF) circuits, and audio circuits. Fixed inductors can also be used in filter circuits for removing high- or low-frequency noise. They are also sometimes used for coupling and decoupling different sections of electronic circuits. < h3 > Mechanism < p > Fixed inductors typically consist of a coil of wire wrapped around a magnetic core, either air or more often a ferrite material. An electric current is passed through the wire winding and a magnetic field is generated due to the flow of current. The core material increases the strength of the magnetic field and provides more inductance. The inductance of an inductor is a measure of how much it resists changes in current. < p > As a result, an inductor will store energy in the form of magnetic field, and when the current stops, this stored energy will be released. This is commonly used in circuits to smooth out any sudden changes in voltage or current, which is known as “smoothing”. It can also be used to prevent interference from unwanted signals in a circuit. < h3 > PM42S-3R3 application field < p > The PM42S-3R3 is a type of fixed inductor designed primarily for high-frequency applications. It is used in RF circuits, such as in communications systems and radar systems. It is also suitable for high-power amplifier circuits as it can handle high currents with good efficiency. It is also a popular choice in audio circuits as it has a wide inductance range and produces relatively low distortion. < h3 > Working Principle < p > When a current passes through the wire windings on the PM42S-3R3 inductor, a magnetic field is created in the core material. This magnetic field opposes any changes in the current, which is known as inductance. The inductance of the PM42S-3R3 is relatively high and it can produce a stable voltage output over a wide frequency range. This is due to its high-quality ferrite core material, which minimizes any losses in the coil. < p > In RF circuits, the PM42S-3R3 inductor can also be used as an impedance matching device. This is because the inductance of the component can be precisely adjusted to match the input impedance of the circuit, which allows for maximum energy transfer between the two. < p > The PM42S-3R3 is a versatile fixed inductor with a wide range of applications in RF, power supply, and audio circuits. Its low losses and high inductance make it an ideal choice for these types of circuits.

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