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Power‑dense, low‑noise, and fully encapsulated transformers that eliminate overheating, EMI, and costly re‑work for your audio, medical, or renewable‑energy projects.
Get Free Quote in 24 h1️⃣ High price points from overseas OEMs inflate your BOM by up to 25 %.
2️⃣ Quality inconsistencies cause 12 % of shipments to fail final‑stage testing, leading to production delays.
3️⃣ Long lead times – average 45 days from order to delivery, jeopardizing tight project schedules.
4️⃣ Insufficient shielding results in EMI spikes that degrade audio clarity by 15 dB.
5️⃣ Regulatory non‑compliance (e.g., CE, FCC, RoHS) forces costly redesigns.
See How We Solve These Issues →| Parameter | Typical Range | Unit |
|---|---|---|
| Power Rating | 10 W – 500 W | W |
| Operating Voltage | 12 V – 240 V | V |
| Efficiency | ≥ 95 % | % |
| Encapsulation Material | Thermoset epoxy, silicone, or PU | - |
| Operating Temp. | -40 °C ~ +125 °C | °C |
| EMI Shielding | ≤ -80 dB | dB |
large-toroidal-transformer Push-Pull-Toroidal-Electronic-High-Frequency-Transformer power-transformer-design New-energy-transformer
“Xinchangda’s encapsulated toroidal transformer cut our prototype cycle by 40 % and saved $12 k on material costs.” – John M., Senior Engineer, MedTech USA
“The low‑noise performance exceeded our target by 15 dB, enabling award‑winning audio fidelity.” – Lisa K., Audio Product Manager, SoundWave Corp.
All units are CE, FCC, RoHS, GS, CB, VDE, ISO 9001 certified and comply with U.S. import regulations (ITAR‑free, EPA‑approved).
View Full Certification List →The minimum order quantity is 500 pcs for standard specifications; for fully custom designs, MOQ starts at 1,000 pcs.
Yes. We can issue UL, IEC 61800‑3, and FCC certifications on request. Our engineering team prepares all test reports within 10 working days.
Standard sea freight: 20‑25 days port‑to‑port; express air freight: 7‑10 days door‑to‑door for orders above 5 k units.
A free engineering sample (up to 5 pcs) is available after NDA signing; shipping cost is reimbursed on the first purchase.

24/7 technical hotline, on‑site troubleshooting within 48 hours, and a 12‑month warranty covering material and workmanship.
Limited‑time offer: Free engineering sample + 10 % discount on the first order (valid until 30 June 2026).
Email Quote WhatsApp NowOr call us directly: +86 131 2826 4155
Michael T., Procurement Lead, GreenEnergy Inc. – “The quick 7‑day air delivery kept our solar‑farm rollout on schedule. Cost savings of 18 % versus previous suppliers.”
Susan L., Operations Manager, MedEquip USA – “Encapsulation met FDA clean‑room standards, eliminating a costly redesign step.”
David K., Senior Engineer, AudioTech Labs – “Noise reduction exceeded our target by 12 dB, delivering award‑winning sound quality.”
Emily Chen, Ph.D. – Senior Magnetic‑Component Engineer with 12 years of R&D experience at Xinchangda. Published author of “Advanced Toroidal Transformer Design” (IEEE 2024) and frequent speaker at IEC standards workshops. Emily leads the OEM/ODM program and ensures every transformer meets global compliance and performance benchmarks.
Contact Emily directly: grace01@xinchangdadz.com