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Add : Room 701, Building A1, No. 55 Runfa Road, Jiangning District, Nanjing, China
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Our ultralow RDC air coil is a high-performance inductor independently developed for RF and high-current DC-DC converter systems, breaking the performance limitations of traditional iron core and ferrite core inductors. This high current air coil for RF DC-DC converters takes air as the magnetic core, with coreless structural design, realizing zero magnetic saturation and zero core loss, and is specially built for power module manufacturers, RF equipment integrators, industrial power supply enterprises and other professional enterprise-level users. Covering an inductance range of 22nH to 146nH, the ultralow RDC air coil has an ultra-high Q factor and excellent high-current bearing capacity, and is the core component to improve the efficiency and stability of high-frequency power conversion systems.
The core design of the ultralow RDC air coil adopts high-purity oxygen-free copper flat wire winding technology, which greatly reduces the DC resistance while ensuring high current carrying capacity, with the maximum RDC as low as 0.55mΩ. The coreless air structure fundamentally eliminates magnetic saturation and core loss problems, and the inductance value remains stable under the condition of high current and high frequency (clock frequency >4MHz). In terms of high-frequency performance, it has an ultra-high Q factor (minimum 211 at 100MHz), which effectively reduces high-frequency signal loss and is suitable for high-precision RF signal processing. The product uses high-temperature resistant engineering plastic skeleton, with an operating temperature range of -40°C to +125°C, and can work stably in harsh industrial environments such as high temperature, high humidity and strong vibration. In addition, the high current air coil has a high self-resonant frequency (up to 867MHz), which far exceeds the working frequency of ordinary inductors and is suitable for high-frequency RF application scenarios.
Order Code | L (nH) | Tol.L | Test Condition L | Qmin | Test Condition Q | RDC Max (mΩ) | IR (A) | fres (MHz) |
INF-1012-22nH | 22 | ±20% | 1 MHz | 280 | 100 MHz | 0.55 | 40 | 867 |
INF-1012-42nH | 42 | ±20% | 1 MHz | 240 | 100 MHz | 7.70 | 34 | 605 |
INF-1012-86nH | 66 | ±20% | 1 MHz | 245 | 100 MHz | 0.99 | 32 | 457 |
INF-1012-90nH | 90 | ±20% | 1 MHz | 226 | 100 MHz | 1.21 | 30 | 359 |
INF-1012-117nH | 117 | ±20% | 1 MHz | 211 | 100 MHz | 1.43 | 32 | 345 |
| Main Category | Subcategory | Details |
| MOQ | Prototyping & Small-batch | 10 piece minimum order |
| Sample Service | Free proofing & custom service, 5 free samples (shipping at buyer’s cost) | |
| Bulk Order | 5,000 pieces and above with bulk pricing | |
| Lead Time | All Standard Components | Shipped within 5–7 working days |
| Custom Inductance / Pin Design (Sample) | Sample order confirmed within 5–7 working days | |
| Custom Inductance / Pin Design (Mass Order) | Shipped within 15–30 working days | |
| Payment Terms | Main Payment Term | T/T in advance, L/C at sight |
| Procurement Standard | Complies with global enterprise procurement standard for passive components | |
| Quality Deposit | No quality security deposit required | |
| Accepted Terms | FOB Shanghai / Nanjing / Hong Kong, T/T Advance | |
Quality Assurance | Manufacturing Defects | Free replacement for issues caused by manufacturing defects |
| Inspection Report | Batch inspection reports available as certification upon customer request | |
Packaging Specifications | Updated Packaging (2026) | Blister tray packaging; Sealed Tape & Reel for SMD products |
| Optional Packaging | Vacuum sealed packaging for customers with strict moisture-proof requirements |
The ultralow RDC air coil for RF DC-DC converters is widely used in high-frequency, high-current power conversion and RF signal processing systems of enterprise-level equipment. Typical application scenarios include: high-current DC-DC converters with clock frequency exceeding 4MHz in industrial power supplies, RF power amplifiers of communication base stations and wireless communication equipment, RF voltage regulators of aerospace and military electronic equipment, high-current RF filters and chokes of industrial test instruments, and power supply modules of magnetically sensitive systems such as medical NMR equipment. It is also an ideal inductor for the research and development of new energy vehicle on-board chargers and high-power industrial frequency converters, effectively improving the energy conversion efficiency and working stability of the equipment.
We are a professional manufacturer of high-performance inductors for enterprise-level users, with a professional R&D team and advanced production testing equipment. Our ultralow RDC air coil product line has passed ISO/TS 16949 and MIL-STD-810G certification, and all products are 100% tested before leaving the factory to ensure zero defective products. For enterprise users, we provide customized winding design and inductance adjustment services to meet the personalized needs of different RF DC-DC converter systems. Our global technical support team provides 7×24-hour online technical consultation, including circuit matching simulation, product application guidance and after-sales maintenance. In terms of procurement, we support flexible cooperation modes such as long-term supply agreements and JIT just-in-time delivery, and provide a 5-year product quality warranty for bulk procurement customers.
Traditional iron core/ferrite core inductors have magnetic saturation and core loss problems under high current and high frequency conditions, which lead to reduced conversion efficiency and unstable signal. The air core structure of our ultralow RDC air coil fundamentally solves these problems, with ultra-low DC resistance and ultra-high Q factor, which can significantly improve the efficiency and stability of RF DC-DC converters.
A2: Yes, our product uses an integrated molding and fixing structure, with high mechanical strength, which can withstand vibration of 20G acceleration, and is fully applicable to high-vibration industrial environments such as industrial equipment and vehicle-mounted systems.
We provide free sample supply for enterprise-level users, and you can apply for samples through our official website or sales email, and we will deliver the samples to your designated address within 3 working days.
For enterprise-level procurement inquiries, sample testing and technical solution consultation of ultralow RDC air coil for RF DC-DC converters, please contact our exclusive sales manager for enterprise users through the following channels:
