Hit enter to search or ESC to close
For Purchasing Managers, Technical Directors & Operations Leaders who need reliable magnetic cores without hidden costs or delays.
1. High Unit Cost & Hidden Fees – 42% of procurement teams report price variance >15% between quoted and invoiced amounts (2024 IDC Survey).
2. Inconsistent Quality & Failed Compliance – 37% of returned shipments fail CE/UL testing, causing costly re‑engineering.
3. Long Lead Times & Unreliable Logistics – Average 8‑week lead for non‑OEM cores versus 2‑week for qualified suppliers.
4. Limited Technical Documentation – Missing datasheets force engineers to spend up to 12 hours per part on reverse‑engineering.
5. Lack of OEM/ODM Flexibility – Custom inductance or winding patterns are often unavailable, slowing product launches.
| Parameter | Value | Unit | Tolerance |
|---|---|---|---|
| Core Material | Mn‑Zn Ferrite | - | ±0% |
| Effective Area (Ae) | 28 | mm² | ±2% |
| Maximum Flux Density (Bmax) | 0.35 | T | ±5% |
| Operating Temperature | -40 ~ 150 | °C | ±3°C |
| Weight | 12.5 | g | ±1% |
| Compliance | RoHS, REACH, CE | - | - |
ei-28-transformer ei30-transformer hf-common-mode-choke emi-common-mode-choke
“Switching to Xinchangda’s ei28 cores cut our BOM cost by 18% and the first batch passed all FCC tests on day‑one.” – John Lee, Procurement Director, AudioTech Corp.
Certificates & Standards: CE, FCC, GS, CB, RoHS, VDE, ISO 9001, ISO 13485 (Medical), HACCP/GMP, IPPC.
The standard MOQ is 5,000 pieces. For OEM/ODM projects we can accommodate 2,000 pieces with a 5% surcharge.
Yes. Our R&D team offers full OEM design services. Lead time for a custom prototype is 10 working days.
We support FOB, DDP, and air‑freight. Typical DDP delivery to Los Angeles port is 7‑9 business days.
All cores undergo pre‑production testing in our in‑house lab and are accompanied by a full test report (CE, FCC, RoHS).
24/7 technical hotline, 30‑day replacement guarantee, and a dedicated account manager for ongoing projects.
Act within 7 days to secure the sample and lock in the discount. No credit card required.
WhatsApp Us Now Email Request
Emily Chen, Senior Buyer – SolarTech USA
“The ei28 cores arrived on schedule, and the performance exceeded our specs. We saved $12 k on our last batch.”
Michael Patel, Engineering Manager – MedPulse Inc.
“Compliance documentation was complete and easy to file. Our FDA audit passed with zero comments.”
Laura Gómez, Procurement Lead – AudioMax Europe
“OEM design support cut our development cycle from 6 weeks to 3 weeks. Highly recommend Xinchangda.”
Dr. Alex Wu – Senior Magnetic‑Component Engineer, 12 years in OEM/ODM production, published author of “Advanced Ferrite Design” (Springer, 2023). Leads the R&D team at Huizhou Xinchangda Electronic, overseeing over 14,000 k annual core output.
Contact: grace01@xcdmagnetic.com | Phone: +86 131 2825 6415
Huizhou Xinchangda Electronic – 14th Floor, Building A, Pushengwang Industrial Park, Sanhe Street, Huiyang District, Huizhou City, Guangdong Province, China
Tel: +86 131 2825 6415 | +86 0752‑3388753 | Contact Page
