SD7030-121-R

DC Resistance (DCR):	755 mOhm Max
Height - Seated (Max):	0.118" (3.00mm)
Size / Dimension:	0.276" L x 0.276" W (7.00mm x 7.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	SD7030
Shielding:	Shielded
Current - Saturation:	500mA
Current Rating:	670mA
Tolerance:	±30%
Inductance:	115.2µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Inductors, also known as coils, reactor, inductor and loading coil, are passive two-terminal electrical components consisting of a conductor that stores energy in the form of an magnetic field in the air or other material when an electric current occurs in the winding conductor. Inductors can play an important role in electronic circuits and enable various functions. There are two main categories of inductors, namely fixed inductors and adjustable inductors, with some overlapping characteristics.

SD7030-121-R Application Field and Working Principle

SD7030-121-R are Fixed Inductors. SD7030-121-R are a type of inductor designed to have stable electrical characteristics with specified electrical parameters in a wide range of frequencies. They are suitable for use in manual and automatic placement production processes, and are often used in apps with tight tolerance requirements. SD7030-121-R is mainly composed of ferrite devices such as ceramic substrate, copper wire, flux, injected wire and fluxing system. The core of the SD7030-121-R inductor is saturated with air. When the current flowing through the inductor is small, the voltage between the ends of the coil is almost the same as the voltage of the source. However, when the current increases, the voltage across the ends of the coil increases. This phenomenon is called "self-induction". The magnitude of the self-induction depends on the size of the wire parameters and the character of the magnetic field.The magnetic field of an inductor depends on the current it carries. As the current changes, the magnetic field will change, and this signal is transmitted to other components through the air and the magnetic field. This leads to the ability of the coil to store large amounts of energy when the current increases, which can be useful for AC power transmission and can be used as a filter in audio circuits.The structure of the SD7030-121-R inductor is usually made of ceramic body, core material, wire winding and winding system. In terms of core material, it mainly includes ferrite, iron powder, etc. Iron powder can effectively reduce the loss in the process of high frequency current flow. The wire of the SD7030-121-R is wrapped around the core, and the thickness and number of the line winding are predetermined according to the current flow required by the circuit loop. The winding method can be divided into hand-winding and automatic winding. And Used in any device that requires a constant voltage-current ratio, such as audio filters, DC-DC converters, linear regulators, switching power supplies, and switching regulators.In conclusion, Fixed inductors such as SD7030-121-R are designed to have a stable electrical characteristics with specified electrical parameters in a wide range of frequencies. They are mainly composed of ferrite, ceramic substrate, copper wire, flux, injected wire and fluxing system and play an important role in our daily life. Used in any device that requires a constant voltage-current ratio, such as audio filters, DC-DC converters, linear regulators, switching power supplies, and switching regulators.

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