49470SC Inductors, Coils, Chokes

DC Resistance (DCR):	100 mOhm Max
Height - Seated (Max):	0.315" (8.00mm)
Size / Dimension:	0.480" L x 0.480" W (12.20mm x 12.20mm)
Supplier Device Package:	--
Package / Case:	Nonstandard, 4 Lead
Mounting Type:	Surface Mount
Inductance Frequency - Test:	10kHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	9MHz
Q @ Freq:	52 @ 1MHz
Series:	4900S
Shielding:	Shielded
Current - Saturation:	--
Current Rating:	2.3A
Tolerance:	±20%
Inductance:	47µH
Material - Core:	--
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: 49470SC Application Field and Working Principle

Inductors, often referred to as coils or reactors, are elements that store energy in the form of a magnetic field when a current flows through them. There are various types of inductors, including fixed inductors, such as the 49470SC series from TDK Corporation. This particular series is used in a spectrum of applications and is characterized by its high accuracy and reliability. This article will explain the application field of the 49470SC and its underlying working principle.

Applications of 49470SC Inductors

The 49470SC series of fixed inductors are designed for minimal size applications and are mainly used in automotive and industrial applications. Some common uses for the 49470SC series include:

• Electromagnetic interference (EMI) filtering
• Timing circuits
• MEMS devices
• DC-DC converters
• Pulse-width modulation (PWM) control applications
• Power supplies

Some specific automotive applications include valve lift control, multi-port fuel injection (MPFI) systems, airbag systems, electronic differential locks, and electric power steering. Industrial applications include LED lighting, motor control circuits, appliance circuits, and other applications requiring high accuracy and reliability.

Working Principle of the 49470SC Series

The 49470SC series of inductors is designed to have a high rated DC current capacity of 10A, enabling the part to be used in high-load power systems. Additionally, these inductors are able to handle high pulse currents up to 20A.As for its basic working principle, these inductors work by storing electrical energy in the form of a magnetic field and releasing that stored energy when the inductor is disconnected from a power source. As current flows through the inductor, magnetic flux builds up which creates an electromagnetic field. This field is maintained by the inductor’s core material.The core material, which is usually ceramic, has the ability to increase the inductor’s strength and provide greater inductance. In other words, a larger core material provides greater inductance and enables the inductor to handle higher current levels. The inductance of the 49470SC series is adjustable, allowing it to be adapted for different applications. In summary, the 49470SC series of fixed inductors is designed for minimal size applications and is used in a variety of automotive and industrial applications. These inductors are characterized by their high accuracy and reliability, as well as their ability to handle up to a 10A DC current and pulse currents up to 20A. The working principle of the 49470SC series is rooted in the concept of storing electrical energy in the form of a magnetic field and releasing that stored energy when the inductor is disconnected from a power source.

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