SD3814-681-R

DC Resistance (DCR):	15.78 Ohm
Height - Seated (Max):	0.055" (1.40mm)
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:	102mA
Current Rating:	100mA
Tolerance:	±15%
Inductance:	680µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Fixed InductorsInductors are electronic components primarily designed to store electrical energy in the form of magnetic energy, and are among the most widely used components in electronic circuits. Fixed inductors are a type of inductor with a fixed inductance that does not change with frequency or other time-varying parameters. Examples of this type of inductor include SD3814-681-R type inductors.The SD3814-681-R is a fixed inductor series designed by Sumida, a leading Japanese manufacturer of electronic components. This series is designed for use in various power supplies, including telecom, computers, DC/DC converters, computing equipment, and other consumer electronics. Its primary purpose is to filter high frequency noise and provide even current flow.In terms of physical design, the SD3814-681-RSeries features a robust metal alloy shell with a high-temperature insulative coating. The terminal pins are made of phosphor bronze with gold-plated contacts for superior electrical conductivity and durability. The inductance range of the series ranges from 1.0u to 100uH, with an operating temperature range of -40°C ~ +105°C.The working principle behind the SD3814-681-R series is based on the fundamental law of electromagnetic induction. According to the law, an electric current can be induced in a conductor, or any other material that is exposed to a changing magnetic field. In the case of the SD3814-681-R series, when an alternating current is passed through the inductor, a proportional magnetic field is generated. This, in turn, induces an electric current in the inductor, which produces a back electromotive force in opposition to the main current. This reaction creates an inductive reactance, or resistance to current flow, and serves to filter out high frequency noise.In addition to filtering high frequency noise, the SD3814-681-R series can also be used to regulate current flow. This is done by using the inductance of the inductor along with a pair of resistors to create a parallel band-pass filter. The advantage of this approach is that it allows for precise control of the current, allowing for higher efficiency and performance in electronic circuits.Apart from its applications in power supplies, the SD3814-681-R series can also be used in antennas and other passive devices that require inductive reactance. As a fixed inductor, the SD3814-681-R series is ideal for a variety of applications, and its robust construction ensures superior performance and reliability.

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