HF1008-121J

DC Resistance (DCR):	910 mOhm Max
Height - Seated (Max):	0.095" (2.41mm)
Size / Dimension:	0.115" L x 0.105" W (2.92mm x 2.66mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	850MHz
Q @ Freq:	30 @ 25MHz
Series:	HF1008
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	405mA
Tolerance:	±5%
Inductance:	120nH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Inductors are electronic devices consisting of wire wound around a ferromagnetic core, which store energy in the form of a magnetic field. Fixed inductors, also known as ceramic chip inductors, are miniature components used in a variety of common electronic circuits, such as: audio amplifiers, radio receivers, and other analogue and digital applications. The HF1008-121J (also known as HF121J) is a type of fixed inductor that utilizes ceramic as its core and copper or aluminium as its wire conductor. This article will discuss the application fields and working principle of this specific inductor.

Application fields

The HF1008-121J is a highly versatile component made of a ceramic core and is ideal for many different common applications. Most directly, it is commonly used as a part of amplifiers, radio receivers, and other types of circuitry where its inductive property can be of use. Because of its small size, it can also sometimes be used to emulate integrated circuits, and offers a high resistance to both physical and environmental stress. Furthermore, it is also a crucial part of pico-watt radio receivers and multi-stage amplifiers, as well as products with high frequency switching regimes and high-sensitivity and high-stability lasers.

Working principle

The HF1008-121J is an example of a ceramic chip inductor. It works on a simple principle - when electric current passes through a conductor, it creates a magnetic field around it, which results in the phenomenon of inductance. The inductance is usually measured in henries (H), and it is used to describe the ability of a component or circuit to store energy in the form of a magnetic field. This particular model is made of a ceramic core and copper or aluminium wire, and its working range is from 1 MHz to 10 MHz.The most visible effect of the HF1008-121J is an increase in resistance to current, which ‒ when in combination with other components ‒ can produce complex circuit behaviors. This is because when a signal passes through an inductor, a phase difference is created, which can shift the input waveform or voltage. This means that this inductor can be used to alter the signal’s response to frequency changes, making it particularly useful in resonant circuits.

Conclusion

The HF1008-121J ceramic chip inductor is a versatile and popular part used in many different kinds of circuits and products. Its ceramic core and copper or aluminium wire enable it to create a relatively high level of inductance, at ranges way beyond those achievable with conventional inductors. Thanks to its wide usage in amplifiers, radio receivers, and other components, it can be a great asset in a wide variety of applications.

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