EF20 220v 3v Transform Pcb Mounting Transformer for Charger Pcb Board Mini Voltage Transformer

Technical specifications

Customization guide

Adjustable parameters include voltage ratings (up to 300V), frequency range (50–1000Hz), and current capacity (custom windings) to meet specialized needs such as high-power charging stations or variable-frequency inverters.

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Compact yet robust, the EF20’s toroidal design and UL certification make it a go-to for engineers designing energy-efficient PCBs for lighting, consumer electronics, and industrial control systems.

Choose your model

Supplier's note

1. Technical Breakthroughs:

   • Toroidal Coil Structure: Reduces energy loss by 25% compared to traditional E-I cores.
   • UL Certification: Ensures compliance with global safety standards for high-voltage applications.
   • Copper Windings: Achieves 15% lower resistance than aluminum, enhancing durability in harsh environments.

2. Version Selection Guidance:

   • Base Model: Ideal for standard PCB applications (e.g., household chargers) requiring basic voltage conversion.
   • Advanced Model: Perfect for high-frequency lighting systems or industrial devices needing 93% efficiency.
   • Pro Model: Designed for mission-critical applications like medical equipment or aerospace systems, where 99% efficiency and 10kHz frequency tolerance are critical.

With the Pro Model’s nanocrystalline ferrite core, you can achieve triple the frequency range of industry benchmarks, enabling seamless integration into high-speed power supplies. Pair this with its 5A capacity to handle demanding industrial loads without overheating.