SD3812-470-R

DC Resistance (DCR):	1.809 Ohm
Height - Seated (Max):	0.047" (1.20mm)
Size / Dimension:	0.157" L x 0.157" W (4.00mm x 4.00mm)
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:	SD38
Shielding:	Shielded
Current - Saturation:	361mA
Current Rating:	327mA
Tolerance:	±15%
Inductance:	47µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Fixed Inductors – SD3812-470-R Application Field and Working PrincipleInductors, being one of the most common components found on almost every electronic circuit, ensure a wide variety of applications. SD3812-470-R series fixed inductors demonstrate remarkable performance in various applications ranging from consumer electronics to industrial equipment. Featuring excellent saturation characteristics with low DC and AC resistance, they offer high current and voltage capabilities. They’re especially suitable for power supplies as they’re designed to deliver optimal levels of power with high efficiency and reliability.The SD3812-470-R series of fixed inductors are sophisticated integrated circuits (ICs) that incorporate an inductor, a controller, and a switch into a single chip. They are Leaded, meaning that the chip is mounted onto a circuit board using a leaded solder joint and are classified as “fixed” due to their permanent, set inductance value. The inductors feature a wide range of inductance values – from 2.2nH to 470 nH – and are optimal for coil applications through their high temperature stability, excellent shock & vibration resistant characteristics, and exceptional moisture proofing properties.The basic principle of fixed inductors is simple, yet effective. Their core material is usually composed of ferrite or iron powder, which can be wound with a fixed number of wire turns. This produces an inductor with a set inductance value. The “fixed” moniker refers to the immutability of the inductance of the component, which cannot be changed without changing the physical construction.At the heart of the SD3812-470-R series is the QRTech controller, a complex and advanced control circuit that allows users to implement a high degree of control and flexibility over their circuits. The addition of switches and capacitors enable it to be implemented into a wide range of power management systems without requiring extra components. It can also be designed to work in tandem with another circuit to provide synchronous or asynchronous regulation, or with a voltage reference to generate a robust voltage regulation.In addition to being able to precisely control the circuit, the SD3812-470-R series also feature a thermal protection circuit. This detects when the component gets too hot, allowing it to safely dissipate the heat without impacting the circuit’s performance or reliability. Furthermore, its standard packaging allows for easy and reliable surface mounting.The SD3812-470-R series of fixed inductors are an excellent and reliable choice for engineers looking to achieve precise results in their circuits with minimal component count. Their advanced design makes them optimal for power supplies and other applications where accurate current flow and robust voltage regulation is required.

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