RCH875NP-121K

DC Resistance (DCR):	360 mOhm Max
Height - Seated (Max):	0.295" (7.50mm)
Size / Dimension:	0.307" Dia (7.80mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	RCH-875
Shielding:	Unshielded
Current - Saturation:	810mA
Current Rating:	500mA
Tolerance:	±10%
Inductance:	120µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: RCH875NP-121K Application Field and Working PrincipleInductors are important electronic components used in a variety of electrical and electronic circuits. Fixed inductors, as the name implies, are inductors that are designed to remain fix with a specific inductance value even at a variety of frequency, voltage and current range. Fixed inductors are widely used in a variety of applications including power supplies, audio amplifiers, radio or TV tuners, switching power supply, and RF and microwave circuits.One of the popular fixed inductors in the market is RCH875NP-121K. This inductor features a molded construction and an inductance of 1.21 μH +/-20%. It has a rated current of 1.85 Amperes maximum and a minimum saturation current of 4.50 Amperes. It also has a self-resonant frequency of 45 MHz, insulation resistance of 100 MΩ, a thermal resistance of 44 °C/W, and dimensions of 8.0 mm height and 7.5 mm width.The principle of operation of the RCH875NP-121K is mainly based on Faraday’s Law of electromagnetic induction, which states that when a conductor is placed in an alternating magnetic field, an electric current is induced. Therefore, the primary purpose of a fixed inductor is to introduce a controlled amount of inductance into an electrical circuit. When an alternating electric current is introduced to a coil of wire, the variety of the current induces a magnetic field in the form of an alternating flux density(B). This produces a voltage, often referred to as the back EMF, is generated back in the coil in self-resonanceIn terms of physical construction and design, this type of fixed inductor is composed of a ferrite core or Copper winding and is usually round or flat in shape. The number of turns in the coil, the type of the core and its geometry, the size of the core and the type of the winding are all factors that affect the inductance and the impedance of the inductor.The RCH875NP-121K is a perfect for various applications like switching power supplies, mobile phone power, LCD TV power, video advertising machines, communication, digital products, and other use where high-frequency device is needed.Overall, the RCH875NP-121K is a convenient fixed inductor that is designed to provide a reliable performance at a variety of frequency, voltage, and current range. It provides a great choice for various applications due to its superior construction, reliable performance, and cost-effectiveness.

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