LQH43MN680K03L

DC Resistance (DCR):	1.9 Ohm Max
Height - Seated (Max):	0.110" (2.80mm)
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:	1MHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	8.4MHz
Q @ Freq:	35 @ 1MHz
Series:	LQH43
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	180mA
Tolerance:	±10%
Inductance:	68µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Fixed Inductors

Fixed inductors are passive electronic components that store energy in a magnetic field when an electric current is passed through them. They are primarily used to filter the signal in electronic circuits, channel electromagnetic radiation or shunt current to ground. Fixed inductors are usually a component of a larger circuit, such as an AC mains filter or output filter, while a free-standing inductor can also be used.High frequency fixed inductors, such as the LQH43MN680K03L, are often used in high-frequency applications such as mobile phone transmitters and tuner circuits. This type of inductor has a small form factor, low power requirements, and typically, relatively high quality factor (Q) values, meaning they can be effective in a variety of applications.

Application Field of LQH43MN680K03L

The LQH43MN680K03L is a type of high-frequency fixed inductor, typically used in open or short circuit conditions where keeping the signal level low is important. It is commonly used in RF transmission applications, such as mobile phone transmitters, where an inductor is required to filter the signal.The LQH43MN680K03L\'s form factor and estimated inductance makes it suitable for very high frequency circuits of 3GHz and above. Accordingly the type of applications suitable for the LQH43MN680K03L include TV-tuners, GPS navigation systems, ultra wide band (UWB) transceivers, WLAN transceivers, WiMax transceivers and point-to-multipoint base station transceivers.

Working Principle of LQH43MN680K03L

The LQH43MN680K03L operates according to the principle of reluctance current. This type of current flow occurs in the presence of a magnetic field and a current carrying conductor within a particular resistance range. The chokes of this type of variable inductor are formed with wires compacted together and increase the magnetic reluctance. The current flow in the inductor can be determined by the reluctance of the magnetic path and the applied current. The flux generated by the inductor behaves like a drag force on the electrons in the wire, causing them to slow down or speed up as they are pushed and pulled. This is what is known as inductance.At low currents, the outer layers of the LQH43MN680K03L act to reduce the overall magnitude of the inductance, while under higher current the effect of the inner layers is more pronounced, leading to an increase in induced voltage. This is the principle by which the inductor operates.

Conclusion

The LQH43MN680K03L is a type of high-frequency fixed inductor which is used in a wide range of applications. Examples of the applications this type of inductor is well suited to include RF transmission, TV-tuners, GPS navigation systems, UWB transceivers, WLAN transceivers, WiMax transceivers and point-to-multipoint base station transceivers.The LQH43MN680K03L operates according to the principle of reluctance current. This type of current flow occurs in the presence of a magnetic field and a current carrying conductor within a particular resistance range. The flux generated by the inductor behaves like a drag force on the electrons in the wire, causing them to slow down or speed up as they are pushed and pulled, leading to an increase in induced voltage.

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