SPM3015T-3R3M-CA

Series:	SPM-CA
Packaging:	Bulk
Part Status:	Not For New Designs
Type:	Wirewound
Material - Core:	Iron Powder
Inductance:	3.3µH
Tolerance:	±20%
Current Rating:	2A
Current - Saturation:	2.4A
Shielding:	Shielded
DC Resistance (DCR):	151.9 mOhm Max
Q @ Freq:	--
Frequency - Self Resonant:	--
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Inductance Frequency - Test:	100kHz
Mounting Type:	Surface Mount
Package / Case:	Nonstandard
Supplier Device Package:	--
Size / Dimension:	0.126" L x 0.118" W (3.20mm x 3.00mm)
Height - Seated (Max):	0.059" (1.50mm)

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Introduction

Fixed inductors are electronics components used to store energy in the form of electromagnetic field. They offer protection from voltage spikes, help reduce electromagnetic interference (EMI) and are commonly used in commercial and avionics application when space is limited. The SPM3015T-3R3M-CA is a fixed inductor manufactured by Pulsar Rockwell Automation and is available in a compact, low profile package. This article will discuss the application fields and working principle of the SPM3015T-3R3M-CA.

Application Fields

The SPM3015T-3R3M-CA is designed for use in high frequency switching circuits, DC-DC converters, power supplies, and low voltage motors. The inductor is suitable for surface mount technology as well as through-hole mount, depending on the application. It is suitable for applications operating in temperatures ranging from -40°C to +105°C. The device is ideal for use in space constrained commercial, automotive, avionics, and other electronic devices. The device is also able to reduce power supply ripple, absorb electromagnetic energy, and decrease noise in power supply circuits. The SPM3015T-3R3M-CA is also ideal for preventing the generation of electromagnetic interference as well as electromagnetically sensitive devices. The inductor is also able to increase efficiency in power and extend battery life in portable devices.

Working Principle

The SPM3015T-3R3M-CA is a fixed inductor composed of a ferrite core and a copper wire winding which effectively store energy in the form of a magnetic field. The inductor is able to convert fluctuations in current to changes in magnetic field which are then able to resist changes in current flow, thus maintaining a steady current. As current flows through the inductor, the direction of the current will alternate, this causes the magnetic field generated by the inductor to also alternate. This alternating magnetic field induces an electromotive force into the inductor, this electromotive force is the inductor’s resistance to changing current, and is what allows the inductor to maintain a constant current.

Conclusion

The SPM3015T-3R3M-CA fixed inductor is a device designed for use in high frequency switching circuits for applications such as voltage spikes, EMI reduction, and power supplies. It is also suitable for use in surface mount technology and through-hole applications and can operate in temperatures ranging from -40°C to +105°C. The inductor is composed of a ferrite core and a copper wire winding and the inductor is able to maintain a steady current by converting fluctuations in current to changes in magnetic field.

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