The flat-wire block inductor is a power inductor formed by winding flat rectangular conductors around or within a block-type molded magnetic core. Its key attributes—high current capacity, low loss, and efficient heat dissipation—make it well-suited for high-frequency, high-power electronic equipment.
High-current Flat-wire Block Core Inductor
Designed for high-power photovoltaic applications, this flat-wire block core inductor is widely used in commercial PV inverters and energy storage systems. It plays a key role in DC-to-AC power conversion by providing efficient energy storage, current filtering, and harmonic suppression. Featuring a high-current design and robust silicone potting protection, it delivers reliable performance in harsh outdoor environments. With excellent thermal stability and durability, it helps improve the efficiency and long-term reliability of solar power systems.

Key Features
Flat-wire winding for higher efficiency – Compared to round wire, flat wire offers a higher copper fill factor and lower DCR, reducing losses and improving efficiency.
Molded core for better stability – The one-piece metal-alloy powder core provides inherent magnetic shielding, stable inductance over high frequency and temperature, and high saturation current capability.
Superior thermal and high-frequency performance – The flat conductor maximizes heat dissipation area, while effectively minimizing skin and proximity effects, making it ideal for high-frequency applications with SiC and GaN semiconductors.
| Electric Current (A) | Inductance uH |
| 0 | 465 |
| 20 | 448 |
| 40 | 406 |
| 60 | 346 |
| 80 | 280 |
| 100 | 210 |
| 120 | 171 |
| 140 | 147 |
| 160 | 124 |
| 180 | 99 |
Winding Specification
| Winding | Terminal | Wire Specification | Turns | Remarks |
| N1 | 1-2 | QZY-2/180 1.8*9 | 48TS | Reference turns |
Material
| Item Name | Specification |
| Enamelled Wire | QZY-2/180 1.8*9 |
| Magnetic Core | NPFRH924860-060 |
| Base | 76*95/T2.0 |
| Epoxy glue | 6065H |
| Insulating paper | 120*60/T0.13/#410 |
| Solder / Solder Tin | Sn99.3Cu0.7 |
Electrical Parameters
| Inductance #1 | 400uH Min(20KHz/1V ) |
| Inductance #2 |
200uH Min(20KHz/1V/100A ) |
| DC Resistance (DCR) | 10 mΩ Max |
| Insulation Dielectric Voltage (Hi-pot) | 2.0KVac 2mA-3S |
| Insulation Resistance (IR) | 100MΩ Min(DC500V) |
Target Applications
Inductors are engineered for high-performance, high-power filtering and power factor correction:
E-Mobility: EV onboard chargers (OBC) & DC-DC converters.
Renewable Energy: Photovoltaic (PV) inverters & grid-tied energy storage systems (ESS).
Power Quality: High-power PFC (Power Factor Correction) circuits and industrial switching power supplies.
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.
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