This high-efficiency flat-wire common-mode inductor is designed specifically for high-power-density power systems. Its flat-winding structure effectively minimizes the skin effect and DC resistance, significantly enhancing current-carrying capacity and thermal dissipation efficiency. With its excellent electromagnetic interference (EMI) suppression capabilities and compact footprint, it is an ideal choice for cutting-edge industrial applications such as new energy vehicles, photovoltaic inverters, and high-frequency switching power supplies.
High-Efficiency Flat-wire Common-mode Choke for Advanced Power Systems
Engineered with rectangular-section copper wire instead of traditional round magnet wire, our next-generation flat-wire common-mode chokes deliver a quantum leap in size reduction and high-frequency noise suppression. Designed specifically for high-density power systems, they save up to 30% of winding space and drastically reduce PCB footprints without compromising inductance, giving you maximum performance in a fraction of the space.
By offering significantly lower DCR, higher current capacity, and minimized parasitic capacitance, these chokes ensure cooler operation and cleaner filtering even under the most demanding conditions. Flat-wire technology is the new standard for next-generation power supplies, EV chargers, and industrial drives—smarter filtering that cuts noise, saves space, and handles more power.
SQ type: Automation-driven, mainstream-bound.
SQ type – built for automation, chosen for scale.
SQ type: The automated choice for modern designs.
Key Features
DC-Dias Leakage-induced| Electric Current (A) | Inductance uH |
| 0 | 60 |
| 2 | 60 |
| 4 | 60 |
| 6 | 60 |
| 8 | 60 |
| 10 | 60 |
| 12 | 60 |
| 14 | 60 |
| 16 | 55 |
| 18 | 52 |
Winding Specification
| Winding | Terminal | Wire Specification | Turns | Remarks |
| N1 | 1-2 | 2UEW-H 0.55*1.8 | 29TS | Reference turns |
| N2 | 3-4 | 2UEW-H 0.55*1.8 | 29TS | Reference turns |
Material
| Item Name | Specification |
| Enamelled Wire | 2UEW-H 0.55*1.8 |
| Magnetic Core | SQ3325C/R7K |
| Bobbin / Coil Former | 31.5*18.8*30.5/T375HF/黑色 |
| epoxy adhesive | 116P-1 A/B |
| Solder / Solder Tin | Sn99.3Cu0.7 |
Electrical Parameters
| Inductance L | 4mH Min(1KHz/1V) |
| impedance Z | 6 KΩ Min(500KHz/1V) |
| DC Resistance (Rdc) | 30 mΩ Max |
| Insulation Dielectric Voltage (Hi-pot) | 1.8KVac 2mA-3S |
| Insulation Resistance (IR) | 100MΩ Min(DC500V) |
Target Applications
High-power switch-mode power supplies, industrial power supplies, UPS (1kW–2kW range)
Inverters, motor drives
Telecom power supplies, server power supplies
Automotive electronics, renewable energy systems
Smart home devices, portable consumer electronics
Proven Industry Expertise: With over 20 years of industrial experience and a solid foundation established in 2013, we operate five major core industrial lines across multiple specialized manufacturing bases to ensure top-tier product scale and stability.
Global Quality Certifications: Our facilities strictly adhere to international automotive and industrial standards, backed by a complete set of major credentials including IATF16949, ISO9001, ISO14001, ISO45001, and ISO50001.
Strong R&D & Technical Innovation: Driven by dedicated research teams and specialized new-design laboratories, we possess extensive patent portfolios and advanced testing capabilities to provide highly reliable, customized magnetic solutions.
Smart & Scalable Manufacturing: We leverage advanced ERP and MES-managed smart manufacturing systems to optimize production capacity, securing a highly dependable supply chain for international clients across the EU, US, and globally.
FAQ
Q1: What are the main advantages of an amorphous core inductor?
A1: Compared to traditional silicon steel, amorphous cores cut energy losses by 80% to 90%, meaning much less heat generation. They also handle higher currents while being only a fraction of the size of standard inductors.
Q2: What is the benefit of the CD-type split-core design?
A2: The CD-type split-core design allows us to easily adjust the air gap. This flexibility means we can precisely customize the electrical performance to match your exact circuit and ripple current needs.
Q3: Will these inductors cause audible buzzing or noise?
A3: No. Our amorphous alloy material eliminates high-frequency core "squealing" or humming. This near-silent operation makes them ideal for noise-sensitive applications like electric vehicles (EVs) and audio systems.
Q4: Can I request customized specifications for my project?
A4: Yes, we provide full custom design services. We can adjust the inductance, current ratings, wire specs, and physical dimensions to ensure the component fits your specific power system requirements.
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