SPM3012T-1R0M-LR

DC Resistance (DCR):	59.4 mOhm Max
Height - Seated (Max):	0.047" (1.20mm)
Size / Dimension:	0.126" L x 0.118" W (3.20mm x 3.00mm)
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	SPM-LR
Shielding:	Shielded
Current - Saturation:	5A
Current Rating:	3.4A
Tolerance:	±20%
Inductance:	1µH
Material - Core:	Metal
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Fixed inductors, also known as fixed coils, are electronic components whose physical structure consists of a wire wound in a coil shape and encapsulated in a cylindrical plastic case. This type of inductor is mainly used for AC line filtering, RF shielding, and signal noise reduction. One example of a fixed inductor is the SPM3012T-1R0M-LR. In this article, the application field and working principle of the SPM3012T-1R0M-LR will be discussed.

Application field

The SPM3012T-1R0M-LR is a surface mount power inductor, which is mainly suitable for portable devices such as mobile phones, tablets, PDAs, and laptops. This inductor is also used in DC-DC converters, switching power supplies, on-board power supplies, and digital circuitry. When used in DC-DC converters, the SPM3012T-1R0M-LR helps to smoothen the voltage and current fluctuations present on the power supply rail. This inductor is robust enough to handle high frequency and high current applications without any issue. Additionally, it is able to maintain a low DC resistance (DCR) to ensure high power conversion efficiency and low power losses.

Working Principle

The working principle of the SPM3012T-1R0M-LR is based on the fundamentals of inductors. An inductor is an electrical component that stores energy in the form of a magnetic field. It works by inducing a current when a varying voltage is applied to its terminals. The current generates a magnetic field which increases with increasing current. As the inductor stores energy, it also resists current. The amount of resistance is proportional to the rate at which the current is increasing. The SPM3012T-1R0M-LR has a nominal inductance of 1.0uH and a maximum current rating of 8.2A. This inductor also comes with a high saturation current rating of 13A, which allows it to handle high current applications. Additionally, it has a small profile which makes it suitable for applications where space is a constraint. The inductor’s ferrite core material ensures high temperature resistance and low DCR.

Conclusion

In conclusion, the SPM3012T-1R0M-LR is a fixed inductor that is mainly used for AC line filtering, RF shielding, and signal noise reduction in portable devices such as mobile phones, tablets, PDAs, and laptops, as well as in DC-DC converters and switching power supplies. This inductor is robust enough to handle high frequency and high current applications while maintaining a low DC resistance to ensure high power conversion efficiency and low power losses. Its working principle is based on the fundamentals of inductors and it comes with a nominal inductance of 1.0uH, a maximum current rating of 8.2A, and a high saturation current rating of 13A.

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