High Current Surface Mount Unshielded Inductors (SDR SERIES) | High Current Power Inductor Manufacturer | Coilmaster Electronics

High current non-shielded SMD power inductor | Coilmaster Electronics specialize in the production of SMD power inductors, common mode choke, high frequency transformers.

High current open magnetic circuit construction SMD power inductor

High Current Surface Mount Unshielded Inductors (SDR SERIES)

High current non-shielded SMD power inductor

The SDR Series is a family of wire-wound SMD high current power inductors featuring an unshielded construction. By eliminating the shielding core, these inductors deliver higher saturation current capability in a compact footprint. As demand grows for enhanced performance in smaller packages, Coilmaster’s latest miniature SDR Series provides improved electrical characteristics without compromising on size or profile.


With its unshielded construction and enhanced performance, the SDR Series empowers engineers to achieve superior efficiency and space savings, ultimately boosting the overall performance and reliability of today’s electronic systems.

Key Highlights

Open Magnetic Design
Maintains low core loss and supports high saturation currents, making it an optimal choice for modern DC-DC converters and power supplies.
Low DC Resistance & High Allowable Current
Ensures efficient energy conversion and reduces thermal issues.
Eco-Friendly & Flexible
Available in a broad range of sizes from 3 mm to 13 mm.
RoHS, REACH, and Halogen-Free compliant.
Supports custom designs for project-specific requirements—even beyond standard specifications.
Compact & Thin Profile
Ideal for applications where high mounting density is critical, such as smartphones, tablets, and other portable devices.

Features
  • Tiny size and thin
  • Open magnetic construction
  • The electrode with ferrite core directly, good for high mounting density.
Applications
  • Power Line Filtering in Smartphones, Tablets, and other Portable Devices
  • DC-DC Converters for optimized power delivery
  • General Power Supply Circuits demanding high current and low losses
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High Current Surface Mount Unshielded Inductors (SDR SERIES) | High Current Power Inductor Manufacturer | Coilmaster Electronics

Located in Taiwan since 1995, Coilmaster Electronics Co., Ltd. has been a manufacturer of magnetic components. Its main magnetic components include, High Current Surface Mount Unshielded Inductors (SDR SERIES), common mode chokes, SMD molding power chokes, chock coil inductors, SMD shielded and semi-shielded power inductors, low profile and high current power inductors, high voltage power inductors, ethernet and LAN power transformers, flat wire inductors, RJ45 jacks with integrated magnetics and high frequency transformers, and ceramic or air coil multilayer chip inductors.

Coilmaster is a professional manufacturer for inductor, common mode choke, chip beads and transformer. Our vision is “Creating high-performance inductors, reducing energy loss, and contributing to sustainable” To achieve this, our engineer team is keen to design the power inductor to have better efficiency. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.

Coilmaster Electronics has been providing customers with high current power inductors since 1995, with both advanced technology and 29 years of experience, Coilmaster Electronics ensures that each customer's requirements are met.