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As a Purchasing Manager, you’ve likely faced one or more of these issues:
Data from a 2025 industry survey shows 57% of US manufacturers delayed product launches because of these exact problems.
See How We Solve It| Parameter | Value | Unit |
|---|---|---|
| Core Material | EE20 Ferrite | - |
| Inductance (L) | 150‑300 | µH |
| Turns Ratio | 1:10‑1:30 | - |
| Rated Power | 10‑200 | W |
| Operating Frequency | 50‑500 | kHz |
| Efficiency | 92‑96 | % |
| Temperature Range | -40 ~ +85 | °C |
| Certifications | CE, FCC, RoHS, UL, ISO 9001 | - |
Industrial Power Supplies: Used by a US automotive‑parts plant to cut inverter losses by 28%.
Medical Equipment: Integrated into a Class‑II ultrasound system, meeting FDA EMC standards on first test.
New‑Energy Inverters: Enabled a solar‑panel manufacturer to achieve 15% higher conversion efficiency.
Case Study: Precision Robotics Inc. replaced legacy flybacks with our custom ee20 units and reported a 35% reduction in warranty claims within six months.
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Request a Custom QuoteContact our US sales team via the form below, WhatsApp, or email. We’ll provide a free quote within 24 hours and arrange FOB or DDP shipping.
Yes. Our 10 R&D engineers can tailor turns ratio, insulation class, and mounting style. Lead time for prototyping is 7‑10 days.
All units are CE, FCC, RoHS, UL, and ISO 9001 certified. Additional certifications (GS, VDE, CB) can be requested at no extra cost.
Standard terms are 30 % T/T deposit, 70 % before shipment. For trusted partners we accept Net 30 or Letter of Credit.

Express air freight is available within 3‑5 business days after payment confirmation. Sea freight averages 12‑15 days.
Limited‑time offer: First‑order discount of 15% on all custom ee20 core flyback transformers (valid until 30 May 2026). Stock is limited – act now!
Request Free Sample Email Sales DirectlyOr WhatsApp us now: +86 131 2825 6415
Emily R., Operations Manager, GreenTech Solar – “The ee20 core flyback transformer delivered a 22% efficiency gain. Delivery was on‑time, and the technical support answered every question within hours.”
Michael S., Procurement Lead, MedEquip USA – “Compliance was a nightmare with other vendors. Xinchangda provided full FCC and FDA documentation, saving us weeks of paperwork.”
Laura K., Technical Director, AutoDrive Corp. – “Custom winding options let us meet strict EMI limits without redesigning the PCB. The ROI was realized in the first production batch.”
Trusted By Leading Brands
All products are backed by the following certifications: