High-frequency transformers play a crucial role in today’s power electronics — from chargers and adapters to LED drivers, industrial controls, and various compact power modules. At Yunleeb Electronics, we specialize in designing and manufacturing custom magnetic components, including the popular EE22 high-frequency transformer shown in the images above.
Engineers choose the EE22 form factor for its balance of size, power capability, and cost-efficiency, making it one of the most widely used options in low- to mid-power SMPS (Switch Mode Power Supply) applications.
What Is an EE22 High-Frequency Transformer?
The EE22 transformer is built around an EE-shaped ferrite core, which provides excellent magnetic performance and helps achieve high efficiency in switching power supplies. Its compact structure supports reliable isolation, stable output, and optimized thermal performance.
From the photos, you can see typical EE22 construction features:
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A ferrite EE core set
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A bobbin with multiple pins for flexible winding configurations
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High-quality copper windings protected with insulating tape
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Reinforced structure for durability and safety
This design ensures consistent performance across a variety of power topologies.
Key Features
✔ High Efficiency
The EE22 core material delivers low loss, enabling high-frequency operation and stable performance even under continuous load.
✔ Compact & Space-Saving
Designed for applications requiring both small size and reliable output, EE22 transformers fit easily into compact SMPS layouts.
✔ Customizable Windings
Primary and secondary winding turns, wire types, insulation layers, and pin layouts can be tailored to your exact requirements.
✔ Reliable Insulation & Safety
Each transformer is carefully wound and reinforced with quality insulation materials to meet safety standards for electrical isolation.
Typical Applications
EE22 high-frequency transformers are suitable for a variety of power electronics products, including:
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AC/DC power adapters
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LED lighting drivers
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Communication equipment power modules
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Industrial control circuits
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Small household appliances
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Consumer electronics chargers
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Standby power supplies
If your design targets compact size with efficient power conversion, EE22 is a highly practical option.
Custom OEM/ODM Services
At Yunleeb Electronics, we provide full customization based on your electrical and mechanical requirements:
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Input/output voltage & power rating
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Winding configuration (flyback, forward, half-bridge, etc.)
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Core material selection
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Leakage inductance and capacitance optimization
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Hi-pot & safety specifications
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Pin layout and mounting style
Our engineering team works closely with customers from prototype to mass production to ensure performance, reliability, and cost advantages.
Why Choose Yunleeb Electronics?
✔ 10+ Years of Manufacturing Experience
We have extensive expertise in magnetic component design across multiple industries.
✔ Fast Samples
Quick prototyping to help you validate designs early.
✔ Factory-Direct Pricing
Competitive pricing without middle-man markup.
✔ Strict Quality Control
Every unit undergoes electrical tests, insulation checks, and reliability inspection.
Let’s Build Better Power Products Together
If you’re looking for custom EE22 transformers or other magnetic components for your next project, Yunleeb Electronics is ready to support you with high-quality and cost-effective solutions.
👉 Learn more at: www.yunleeb.com
👉 Contact us for a quote or sample today!
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