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Your Leading SPI Power Inductors Supplier

 

Magsonder Innovation (Jiangsu) Co., Ltd. is a Shanghai-based manufacturer specializing in high-quality power inductors and transformers for power electronics applications. We have many types of inductors, including CD power inductors, magnetically shielded chokes, CDRH-R magnetically shielded inductor, molded inductors, data line EMI filters, DPI flat wire chip inductor, KLF SMD common mode chokes, magnetically shielded inductors, MBS drum core SMD inductors, NR inductors, RLF common mode chokes and SPI power inductors. They resist changes in current, making them vital for everything from noise suppression to energy transfer.

 

 
  • 2918 Series Inductors
    2918 Series Inductors
    The SPI2918 Series is a high-current SMD Power Inductor designed with a unique flat wire winding and a sturdy assemblage design. This robust construction, featuring a large 29.0 mm × 29.0 mm
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Why Choose Us?

 

Rich Experience

Our management team brings over ten years of industry experience, with core members from leading power electronics companies, ensuring strong technical judgment and stable operational management.

Professional Team

With 160 skilled employees, modern production facilities, and lean manufacturing processes, we maintain efficient production, controlled lead times, and consistent product performance.

High Productivity

Our factory supports a monthly output of 30–40 million units, enabling stable supply for large-volume orders, long-term programs, and fast response to market demand.

Quality Control

We hold more than 30 domestic and international patents, including 10 authorized invention patents, and operate under ISO9001 and ISO14000 systems to ensure consistent quality and environmental compliance.

 

2918 Series Inductors

 

Types of SPI Power Inductors

2918 Series Inductors
The SPI2918 Series is a high-current SMD Power Inductor designed with a unique flat wire winding and a sturdy assemblage design. This robust construction, featuring a large 29.0 mm × 29.0 mm footprint, achieves an extremely low DC Resistance (DCR) and low profile, making it ideal for high-efficiency, high-power-density applications.

 

CD Series 54 Inductors
The CD5845 Series is a high-performance, cost-effective wire-wound SMD Power Inductor. It features a 4.5mm profile and is engineered for applications demanding excellent current handling, offering a high saturation current (Isat) of up to 9.50A.

 

Specifications of SPI Power Inductors

 

Part No.

Inductance (L) (µH) (±20%)

Test condition


DCR (mΩ) TYP.

DCR (mΩ) MAX.

Isat (A) TYP.

Idc (A) TYP.

SPI2918-1R0M

1

100kHz, 0.1V

0.5

0.6

120

60

SPI2918-1R5M

1.5

100kHz, 0.1V

0.87

0.72

110

50

SPI2918-2R2M

2.2

100kHz, 0.1V

0.72

0.87

85

50

SPI2918-3R3M

3.3

100kHz, 0.1V

2.86

2.6

91

28

SPI2918-4R7M

4.7

100kHz, 0.1V

2.6

2.86

61.2

28

SPI2918-6R8M

6.8

100kHz, 0.1V

2.86

2.6

45

28

SPI2918-100M

10

100kHz, 0.1V

2.86

2.6

31.2

28

SPI2918-150M

15

100kHz, 0.1V

2.6

2.86

21.2

28

SPI2918-220M

22

100kHz, 0.1V

2.6

2.86

14

28

SPI2918-330M

33

100kHz, 0.1V

2.6

2.86

8.7

28

 

Product related videos

 

 

 

 

Common Materials of SPI Power Inductors

The core material forms the foundation of industrial power inductors. It determines their efficiency and performance. Manufacturers often use materials like ferrite, powdered iron, or laminated steel. Ferrite cores excel in high-frequency applications due to their low energy loss. Powdered iron cores handle higher currents and offer better saturation resistance. Laminated steel cores suit low-frequency applications, providing durability and stability. Each material serves specific purposes, ensuring the inductor meets the demands of its intended application.

 

Core materials influence the inductor's ability to store energy and resist current changes. They also affect the magnetic field strength and overall efficiency. Selecting the right core material ensures optimal performance in industrial systems. Engineers consider factors like operating frequency, current capacity, and thermal stability when choosing a core material.

2918 Series Inductors

 

 
Uses of SPI Power Inductors
 
01/

Energy Storage Function: Power inductors are able to store electrical energy, similar to capacitors, but they store electrical energy in the form of magnetic fields rather than charges. This enables them to smooth current waveforms and reduce voltage and current spikes in power systems.

02/

Inductance Value: The inductance value of power inductors is usually measured in Henry (H), usually in the range of microhenry (µH) to millihenry (mH), depending on the application requirements.

03/

Low Resistance: In order to reduce power loss and heat loss during energy transfer, power inductors usually have low resistance characteristics to improve efficiency.

04/

Current Capacity: Power inductors are designed to handle large currents and therefore have a large current capacity to withstand the rated current load.

05/

Switching Power Supply: Power inductors are widely used in switching power supplies and DC-DC converters. They help stabilize the output voltage, reduce power supply noise, and improve power supply efficiency.

06/

Power Supply Filtering: In the power supply filtering circuit, power inductors are used to remove high-frequency noise and ensure that the power supply ripple voltage remains at an acceptable level.

 

Customization Options

 

Materials: Core material selection, winding type, insulation class

1

>>

Electrical Specifications: Inductance value, rated current, saturation current, DC resistance

2

>>

Structure: Customizable

3

>>

Size: Customizable

4

>>

Package: Available in SMD and through-hole packages

5

 

Ordering Process

 

 

Send Us Inquiry → Receive Our Quotation → Negotiate Details → Confirm the Sample → Sign Contract/Deposit → Mass Production →cargo Ready → Balance/Delivery → Further Cooperation

 

Payment Terms

T.T with 30% downpayment, 70%before shipment.

Paypal or West Union also accept.

 

Packing & Transportation

 

 

Packaging

Protective film, cardboard box, wooden crate

Shipping

By logistics; by shipping; by air.

 

productcate-509-410

 

FAQ

Q: What is the self resonant frequency of a SPI power inductor?

A: The self-resonant frequency (fR) of an inductor is the lowest frequency at which the inductor resonates with its self-capacitance. At the resonant frequency, the impedance is at its maximum peak, and the effective inductance is zero.

Q: What is the difference between RF and power inductors?

A: RF inductors often feature ceramic or air cores to minimize energy losses and ensure stability at high frequencies. Power inductors use ferrite cores to achieve higher inductance values.

Q: What is the difference between inductor and power inductor?

A: Chip inductors generally perform well in high-frequency applications, featuring small inductance values and low losses. In contrast, power inductors emphasize stable current performance and higher current capacity, making them more suitable for low-frequency applications.

Q: What industries commonly use power inductors?

A: Power inductors are widely used in power supplies, automotive electronics, industrial control, telecom, and renewable energy systems.

Q: What is the difference between power inductors and signal inductors?

A: Power inductors handle higher current and energy storage, while signal inductors focus on filtering and noise control in low-power circuits.

We're well-known as one of the leading spi power inductors manufacturers and suppliers in China. Please feel free to buy cheap spi power inductors in stock here from our factory. Quality products and reasonable price are available.

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