Our Square Air Core Inductors (SMAR Series) deliver exceptional high-frequency performance in ultra-compact SMD packages. Engineered with precision-wound non-magnetic construction, these true Air Core Inductor components eliminate magnetic saturation and core losses, making them superior to ferrite-core alternatives in critical RF applications. The square geometry ensures optimal PCB space utilization and mechanical stability during automated assembly.

Unlike traditional Power Inductor or Transformers, these square Air Core Inductor components achieve zero core losses and minimal DCR (as low as 3.4mΩ). The optimized winding geometry reduces parasitic capacitance by 30% compared to cylindrical coils, enabling superior performance in noise-sensitive Sensor interfaces and EMC Filter networks. UV-resistant insulation guarantees long-term reliability in harsh environments.
For EMI-sensitive designs, combine with our RF Inductor and EMC Filter product lines to achieve full FCC/CE compliance.
Series in this family
| Product Series | Length(mm) | Height(mm) | Width(mm) | DCR Max(mΩ) |
| SMAR quadrate coils | 1.30-2.97 | 1.40-1.83 | 1.83-2.14 | 3.4-10.0 |

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Main Product:
Power Inductor ,
RF Inductor,
Transformers,
EMC Filter - EMI/RFI,
Sensor,
Power Converter