744045821 Inductors, Coils, Chokes

DC Resistance (DCR):	20 Ohm Max
Height - Seated (Max):	0.114" (2.90mm)
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)
Supplier Device Package:	1812
Package / Case:	1812 (4532 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	2MHz
Q @ Freq:	50 @ 796kHz
Series:	WE-LQ
Shielding:	Unshielded
Current - Saturation:	150mA
Current Rating:	85mA
Tolerance:	±10%
Inductance:	820µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Introduction To 744045821

Fixed Inductors are an integral part of the power electronics industry, providing performance and reliability. The 744045821 series is a high-efficiency device that combines the features of an inductor and a resistor. This device is widely used in power distribution, consumer electronics, and motor control applications.

Application Field

The 744045821 series is a self-contained inductor-resistor combination suitable for a wide variety of applications. It is designed for use in high voltage and/or high current circuits that need to be protected from overcurrent, short-circuits, and overtemperature. In consumer electronics, the device is used to regulate power supply lines and control electric motors. In power distribution, the device is used for current sensing, voltage and current balancing, and surge protection.

Working Principle

The 744045821 series works on the principle of self-regulation. The device consists of two components, an inductor and a resistor. When current flows through the inductor, it produces a magnetic field that generates a voltage across the resistor. This voltage is proportional to the current, which creates a self-regulating circuit. As current increases, the voltage generated by the inductor pushes current through the resistor so that current remains within defined limits. This self-regulating circuit reduces or eliminates the need for external protection.

Advantages

The 744045821 series offers several advantages compared to traditional components. The self-regulating feature eliminates the need for external protection. The inductor-resistor combination also reduces space and cost by integrating the functionality of two components into one. The device is also designed to be robust and tolerant of high temperatures and vibration, making it suitable for use in harsh environments. Finally, the device is RoHS compliant, making it safe for the environment.

Conclusion

The 744045821 series is a high-efficiency device that combines the features of an inductor and a resistor. This device is widely used in power distribution, consumer electronics, and motor control applications, and offers several advantages, such as cost-effectiveness, robustness, and environmental compliance. This device is an essential component in the power electronics industry, providing reliable performance in even the harshest of applications.

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