Square Air Core Inductors feature a coreless air-wound construction that fundamentally eliminates magnetic core losses, delivering an exceptionally high Q factor and ultra-low high-frequency loss. This makes them particularly well suited for impedance matching and tuning in narrowband RF amplifier applications where signal integrity and efficiency are critical.Engineered with tight inductance tolerances and a flat top-and-bottom profile, these inductors are optimized for automated surface-mount assembly, ensuring consistent placement accuracy and manufacturing reliability. High-reliability versions are also available for mission-critical applications in aerospace, defense, and other demanding industries.
The Square Air Core Inductor series can be used alongside RF inductors and variable inductors to build high-performance RF circuit solutions for applications requiring low insertion loss, high selectivity, and stable high-frequency performance.
Key Features
- Inductance range: 5.5 nH to 27.3 nH
- High self-resonant frequency (SRF)
- Ultra-miniature size: Down to 1.30×1.83×1.40mm
- High current rating: Up to 4.4 Amps
- Tight tolerances: ±2% and ±5% available
- Ag-solder coated leads: Ensure reliable soldering
- Operating temperature: -40°C to +125°C
- RoHS compliant
Applications
- RF amplifier input/output matching
- Frequency tuning for wireless devices
- Broadband filter network components
- RF decoupling & noise suppression
- Aerospace & defense applications
- Wireless communication equipment use
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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 | ✉ |
FAQ
Q: What is the difference between a square air core inductor and a round air core inductor?
A: A square air core inductor uses a square or rectangular coil structure, providing a more regular package outline that is well suited for automated surface-mount assembly. A round air core inductor typically has a cylindrical coil structure. Their electrical performance characteristics are generally similar, so the choice is usually determined by PCB layout constraints and package preference.
Q: What are the advantages of an air core inductor compared with a magnetic-core inductor?
A: Because an air core inductor contains no magnetic core, it eliminates core losses and can achieve a higher Q factor with lower high-frequency loss. This makes it particularly suitable for RF amplifier matching networks and narrowband tuning circuits. The trade-off is that the achievable inductance value is typically lower, making air core inductors most suitable for applications in the nanohenry (nH) range.
Q: What frequency range is suitable for square air core inductors?
A: Square air core inductors are primarily used in high-frequency RF circuits. Typical operating frequencies range from tens of megahertz (MHz) to several gigahertz (GHz), depending on the inductance value, self-resonant frequency, and parasitic parameters of the device.
Shinhom is dedicated to setting a high bar of excellence for industries that integrate or utilize magnetics technologies in our Square Air Core Inductors products.
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