105-472F

DC Resistance (DCR):	3.1 Ohm Max
Height - Seated (Max):	0.075" (1.91mm)
Size / Dimension:	0.100" L x 0.100" W (2.54mm x 2.54mm)
Supplier Device Package:	--
Package / Case:	Nonstandard, 2 Lead
Mounting Type:	Surface Mount
Inductance Frequency - Test:	7.9MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	52MHz
Q @ Freq:	30 @ 7.9MHz
Series:	105
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	175mA
Tolerance:	±1%
Inductance:	4.7µH
Material - Core:	Iron
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionFixed inductors, also known as non-variable inductors, are electronic components used in various high frequency circuits. They are preferred over traditional variable inductors due to their small size, low cost, wide operating temperature range, and ability to maintain a fixed inductance. The 105-472F, or model F, is a popular fixed inductor typically employed in power supply, switching, voltage regulator, and op-amp circuits. It has a wide operating temperature range between -40 Celsius and +105 Celsius, making it suitable for a diverse range of applications. Additionally, the model F is constructed using a molded SGS-THOMSON incapsulated ferrite core that gives it enhanced electrical characteristics and excellent high frequency stability.Application Field The 105-472F fixed inductor contains three distinct terminals – two inputs and one output – and has an operating inductance range of 1.06 microhenry to 4.7 microhenry. It is recommended for use on power supplies and similar high-frequency circuits where it can provide up to 5 amps of AC current. It is also commonly used in applications that require precise control of input, output, and switching signals, such as in signal conditioning and instrumentation systems. It is also suitable for use in general purpose operations, such as in medical diagnostic instrumentation, avionics, radio frequencies, cable modems, and digital energy meters.The105-472F fixed inductor is also suitable for use in automotive, manufacturing, and industrial applications. Its high temperature stability and robust construction make it suitable for harsh operating environments. In automotive applications, it can be employed to control unwanted emissions, regulate power supply, and reduce noise on signal lines. In industrial applications, it can be used in rectifier circuits to control voltage and power supply, as well as in switching applications to reduce noise and improve operating performance.Working PrincipleThe model F fixed inductor works by generating an electromagnetic field when current flows through it. This field induces a voltage into the device that is proportional to the rate of change of a current passing through it, an effect known as inductance. The greater the inductance of a device, the greater the voltage. The model F operates within a specific range of inductance and is designed to maintain a stable, constant value regardless of the operating conditions.In operation, the 105-472F fixed inductor works by moving the necessary electrical current into the terminals of the device. This movement creates a linear movement of electrons, creating a magnetic field, which induces a voltage to the inductor terminals. The magnitude of the voltage depends on the resistance in the inductive circuit and the rate of change of the current. This voltage changes as the current changes within a specific operating frequency. The 105-472F also features a unique core construction. In this design, the ferrite core is an inductor with a flux path is completely encapsulated in the epoxy shell. This allows for a higher inductance, higher frequency stability, and greater temperature stability. The model F is also designed to be electrically insensitive to cable vibration, offering greater reliability in harsh environments.ConclusionThe 105-472F fixed inductor is a reliable, cost-effective component particularly suitable for high-frequency circuits. It has a wide operating temperature range and a molded SGS-THOMSON encapsulated ferrite core that provides stable inductance characteristics, making it suitable for a range of applications. Its three terminals and linear movement of electrons create an electromagnetic field that induces a voltage, thus allowing the accurate control of input, output, and switching signals. The model F is ideal for automotive, manufacturing, and industrial applications, offering high temperature stability and protecting vulnerable circuits from noise and interference.

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