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Reduce your project lead‑time by up to 40% with premium‑grade toroidal transformer cores that combine superior magnetic efficiency and strict US compliance.
Get Free Quote in 24hResult: Project overruns, missed market windows, and reduced ROI.
| Parameter | Typical Range | Unit | Compliance |
|---|---|---|---|
| Core Material | Silicon Steel / Nanocrystalline | - | UL 508, IEC 60384 |
| Effective Area (Ae) | 30‑200 mm² | mm² | - |
| Operating Frequency | 20 Hz‑500 kHz | Hz | - |
| Temperature Rise | ≤ 30 °C @ 5 A | °C | IEC 60076 |
| Magnetic Loss | < 3 % @ 1 kHz | % | - |
| Warranty | 24 Months | - | ISO 9001 |
Medical Imaging: A US‑based MRI equipment maker reduced core‑loss heating by 28% after switching to our nanocrystalline toroidal cores, enabling a 15% weight reduction of the power module.
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Industrial Automation: A leading PLC supplier integrated our custom‑wound toroidal cores, cutting BOM cost by 19% and achieving ISO 13485 certification for safety‑critical modules.
Audio Equipment: Premium headphone manufacturers report a 12 dB improvement in signal‑to‑noise ratio thanks to our low‑leakage designs.
"Switching to Xinchangda’s toroidal cores cut our power‑module cost by 18% and eliminated the 6‑week shipping delay we faced with previous suppliers." – John Lee, Procurement Manager, MedTech USA
"The custom nanocrystalline core met our strict UL and RoHS requirements without extra testing fees." – Sarah Patel, Technical Director, AutoVolt Inc.
Certificates: CE, UL, FCC, RoHS, ISO 9001, VDE, CB, GS, SAA – all available for download upon request.
Download Full Certification Pack →

Standard stock cores ship in 5‑7 business days. Custom designs (material, size, winding) are completed in 14 days after design approval, with express shipping available.
Yes. Every production batch is accompanied by a test report and certificates (UL 508, RoHS 3, CE) that meet US import regulations.
Our 10 R&D engineers work directly with your design team to develop magnetic specifications, prototype, and finalize production tooling—all at zero NRE for orders over 5 k units.
We accept T/T (30 % deposit, 70 % before shipment), L/C at sight, and PayPal for sample orders. Credit terms (30‑60 days) are negotiable for established accounts.
We partner with DHL, UPS, and FedEx for door‑to‑door service. For containers, we arrange full‑truckload (FTL) shipments from our Zhuhai port to any US port, with customs clearance support.
Limited‑time Offer: Free engineering sample (up to 5 pcs) for qualified US inquiries – no charge, no obligation.
Request Your Free Sample NowOr call us directly: +1 312‑825‑6415 (US toll‑free)
Mike Thompson, Procurement Lead, SolarTech USA –
"The high‑efficiency toroidal cores cut our inverter losses by 22%, translating into a $45k annual energy saving."
Linda Garcia, Operations Manager, AudioPro Ltd. –
"Delivery in 6 days versus the usual 4 weeks allowed us to meet a critical product launch deadline."
David Kim, Technical Director, MedEquip Corp. –
"Their OEM design team helped us achieve UL compliance without extra testing costs. Highly recommended."
Emily Chen, Ph.D.
Senior Magnetic‑Design Engineer & International Business Consultant, 18 years in power‑magnetics, former Lead Engineer at a Fortune‑500 automotive supplier, and current Technical Advisor for Xinchangda’s US market expansion.
Contact: grace01@xcdmagnetic.com | Phone: +1 312‑825‑6415