ASPI-104S-121M-T

DC Resistance (DCR):	350 mOhm Max
Height - Seated (Max):	0.157" (4.00mm)
Size / Dimension:	0.398" L x 0.394" W (10.10mm x 10.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	ASPI-104S
Shielding:	Shielded
Current - Saturation:	1.2A
Current Rating:	1.08A
Tolerance:	±20%
Inductance:	120µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Fixed Inductors

Fixed inductors, also known as chokes, are passive components used in electronics circuit designs for two distinct purposes: to store energy temporarily and to block or filter certain frequencies of current. Fixed inductors are commonly used across a wide range of applications, including power supplies, signal processing, and entertainment systems.

Types of Fixed Inductors

The two main types of fixed inductors are: air core inductors and ferrite core inductors. Air core inductors are constructed from two insulated wire coils that are wrapped around a ferromagnetic core, which can be made from anything from iron to aluminum foil. Air core inductors, while inexpensive and easy to manufacture, are prone to eddy currents, which often cause instability at higher frequencies. Ferrite core inductors have a ferromagnetic ferrite core, which provides higher frequency stability and higher inductance, as well as greater resistance to electrical noise.

ASPI-104S-121M-T Fixed Inductor

The ASPI-104S-121M-T fixed inductor is a surface-mount air core inductor, featuring a low profile, ferromagnetic core, and wide operating temperature range. This inductor is commonly used in applications that require filtering of high frequency currents, including medical equipment, communications, and wireless systems.

ASPI-104S-121M-T Working Principle

Fixed inductors operate on the principle of inductance, whereby coils of wire are wound around a ferromagnetic core, creating a magnetic field when a current flows through the coil. The magnetic field induces a counter voltage in the coil, creating an opposing force, which opposes the current flowing through the inductor. This opposing force stores some of the energy as an electrical field, which can then be released as the current strength declines.

ASPI-104S-121M-T Application Field

The ASPI-104S-121M-T is a low profile, surface-mount air core inductor with a wide operating temperature range and is most commonly used in applications that require filtering of high frequency currents. Common applications of this inductor include medical equipment, communications, and wireless systems.The ASPI-104S-121M-T inductor has a variety of features that make it well-suited for use in high frequency filtering applications. Its low profile allows for a minimal footprint on the circuit board, while the ferromagnetic core ensures a reliable constant inductance over a wide range of frequency variations. Additionally, the wide operating temperature range ensures reliable operation in extreme environments.

Conclusion

Fixed inductors are versatile components that can be used in a variety of applications, from power supplies and signal processing to medical equipment and wireless communication. The ASPI-104S-121M-T fixed inductor is a low profile, surface-mount air core inductor with a wide operating temperature range, making it an ideal choice for high frequency filtering applications.

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