PM40-R18M

DC Resistance (DCR):	280 mOhm Max
Height - Seated (Max):	0.126" (3.20mm)
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)
Supplier Device Package:	1812
Package / Case:	1812 (4532 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	25.2MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	400MHz
Q @ Freq:	30 @ 25.2MHz
Series:	PM40
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	450mA
Tolerance:	±20%
Inductance:	180nH
Material - Core:	Non-Magnetic
Type:	Molded
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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PM40-R18M is a fixed inductor product which is widely applied in electronic equipment. It is a kind of passive components which can store energy and can change electrical energy to magnetic energy.The basic working principle of the fix inductor is that it consists of conductance wire. When the current passes through the wire coil, a certain magnetic field will be created within it and an electrical field is also formed. In the process, some of the energy stored in the inductor is lost due to the resistance of the circuit and to the losses in the material of the inductor. The inductance of the inductor is determined by the size, shape, material and the number of turns in the coil.In the PM40-R18M, it is composed of ferrite, axial core, and band terminal, etc. It has a high Q factor of work frequency, and is able to operate with a current as high as 5A.The PM40-R18M is applicable in different fields as well. It can be used to provide signal path to an oscillator circuit, such as amplifier circuit, or for other electronic signals. Moreover, it can be used to supply power to a digital circuit, in order to help it process digital signals more quickly. Parts of the motor drive circuit, such as servo motor, stepper motor, and brushless motor, can also use this product to achieve higher precision. It is also used in the harmonic filter circuit, for example, to reduce the interference effect on the power system and increase the system reliability.The PM40-R18M is also applied as an important component in the pulse circuit. The pulse circuit can control the time duration and current magnitude of the target circuit precisely. It can also regulate the amplitude and frequency of AC signal in AC drive circuit, AC current filter circuit, and inductive resistance compensation circuit, as well as detect the position of certain electrically powered device.The specific working principle of the PM40-R18M is complex. But in summary, when current flows through it, the inductor will generate a variety of magnetic fields, and the magnetic inductance and kinetic energy will be produced, storage, and transfer from the inductor core to the surface of the inductor.The PM40-R18M is widely used in many electronic equipments because of its high performance level. It has a low temperature drift coefficient and it can produce higher quality signals compared to other inductors. Its main performance includes low leakage on current and voltage, high reliability under high frequency operation, high saturation current, high accuracy, resistance to high temperature and high electromagnetic interference. When designers select the inductor product, they should firstly pay attention to the currently used inductors and its working parameters, such as the rated inductance, rated current, and rated frequency of operation. After that, the designers need to determine the other conditions such as the working temperature prerequisites and environmental prerequisites. Finally, based on the total cost and environmental protection requirements, designers can select the most suitable Product for the project.The PM40-R18M is one of the most effective electronic components in the fixed inductor industry. It has multiple models and is available in a wide variety of sizes, shapes, and specifications to meet the needs of different customers. With its high efficiency and stability, it is a perfect choice for high frequency power supply project.

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