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Cut costs, boost reliability, and receive your custom transformer in as fast as 14 days.
Get Free Quote in 24 hAccording to the 2025 International Magnetics Survey, average transformer prices in North America rose 12 % YoY, driven by limited local supply and high raw‑material tariffs.
30 % of procurement managers report failures within the first 12 months of operation, often caused by non‑CE‑certified components and inadequate testing.
Typical lead times exceed 45 days, with freight delays adding another 10‑15 days—costly for time‑sensitive projects such as medical equipment or renewable‑energy installations.
| Parameter | Standard Value | Optional Range |
|---|---|---|
| Model | ei33 | Custom suffix (ei33‑A, ei33‑B) |
| Power Rating | 33 W | 20‑50 W |
| Input Voltage | 85‑265 V AC | 50‑400 V AC |
| Frequency | 50/60 Hz | 45‑65 Hz |
| Efficiency | ≥ 95 % | 93‑98 % |
| Operating Temp. | ‑40 °C ~ +85 °C | ‑55 °C ~ +105 °C |
| Dimensions (L×W×H) | 45 mm × 30 mm × 20 mm | Custom up to 80 mm |
| Weight | 45 g | 30‑70 g |
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“Switching to Xinchangda’s ei33 transformer cut our component cost by 28 % and we received the first batch in 12 days. No quality issues after 18 months of operation.” – John Miller, Procurement Manager, SoundWave USA
“The CE and FDA certifications gave us immediate market approval for our new ECG line. Xinchangda handled the entire OEM process flawlessly.” – Dr. Lisa Chen, R&D Lead, MedTech Labs
Certificates: CE, FCC, RoHS, ISO 9001, UL, IEC 61800‑9‑1, FDA (Medical), GS, CB, VDE, SAA.
Standard production and shipping take 10‑14 business days after artwork and specifications are approved. Express air freight can deliver within 4 days.
Yes. We offer custom winding ratios, terminal types, PCB‑mount or panel‑mount formats, and branding options. Minimum order for custom design is 500 pcs.
CE, FCC, RoHS, ISO 9001, UL, IEC 61800‑9‑1, FDA (for medical use), GS, CB, VDE, SAA. Test reports are available on request.
Pricing is tiered: 1‑4 k pcs ≈ $1.85 /pc, 5‑9 k pcs ≈ $1.68 /pc, 10 k+ pcs ≈ $1.55 /pc (EX‑WFOB). All prices include standard packaging and export documentation.
We offer a 24‑month warranty, free technical assistance via email/WhatsApp, and on‑site troubleshooting for critical projects.
Limited‑Time Offer: Free engineering sample (up to 5 pcs) for orders placed before June 30 2026. No‑risk, money‑back guarantee if specifications are not met.
Email Quote WhatsApp ChatEmily Torres, Senior Engineer – GreenVolt Inc.

“The ei33’s high efficiency (96 %) helped us meet the ENERGY STAR target for our solar inverter line. Delivery was on schedule, and the technical team answered every design question within hours.”
Mark Patel, Procurement Lead – AutoPro Controls
“Xinchangda’s transparent pricing and ISO‑9001 audit reports gave us confidence to place a 15 k‑piece order. The batch passed 100 % functional test on first try.”
Sophia Liu, Operations Manager – MedTech Labs
“We needed a CE‑certified transformer for a new portable ECG. The ei33 arrived in 10 days, fully packaged, and the device passed FDA clearance without additional modifications.”
Alex Cheng, Senior Magnetic‑Component Engineer
Alex has 12 years of R&D experience in high‑frequency transformers and has led more than 30 OEM projects for Fortune‑500 manufacturers. He holds a Master’s degree in Electrical Engineering (MIT) and is a certified ISO 9001 auditor.
Contact: alex.cheng@xcdmagnetic.com | Phone: +86 131 2825 6415
Huizhou Xinchangda Electronic – 14 years of magnetic‑component expertise
📍 14th Floor, Building A, Pushengwang Industrial Park, Sanhe Street, Huiyang District, Huizhou City, Guangdong Province, China
📞 +86 131 2825 6415 | +86 0752‑3388753