EC28 High Frequency Transformer: A Compact Solution for Modern Power Electronics

As electronic devices continue to become smaller and more integrated, transformer design is also moving toward more compact and PCB-friendly solutions. For engineers and manufacturers working on switching power supplies, electronic control boards and other power conversion systems, the transformer needs to fit the available board space while meeting the electrical requirements of the application.

To meet these design needs, we are introducing the EC28 High Frequency Transformer, a compact horizontal plug-in transformer designed for PCB-based electronic power applications.

Its practical structure, flexible voltage configurations and compact footprint make the EC28 suitable for a variety of electronic power supply and power conversion projects.

Compact Design for PCB Integration

The EC28 features a horizontal plug-in construction with multiple pins for direct PCB installation.

According to the mechanical drawing, the maximum overall dimensions are approximately:

• Length (A): 31.5 mm max
• Width (B): 24.0 mm max
• Height (C): 30.5 mm max

This compact form factor makes the EC28 suitable for electronic equipment where PCB space and component layout are important considerations.

For engineers, the value of a compact transformer is not simply its physical size. A suitable mounting structure can also make component placement, PCB routing and assembly easier to manage.

PCB-mounted transformer structures are commonly used in switching power supplies and other power-electronic designs where compact integration is required.

Flexible Voltage Configurations

One of the key characteristics of the EC28 series is its range of available voltage configurations.

Based on the current specification:

The two voltage ranges represent different winding configurations within the EC28 series. For a specific project, the actual winding ratio and electrical configuration should be confirmed according to the customer's circuit requirements.

This flexibility allows the EC28 to be considered for different electronic power supply designs rather than being limited to one fixed voltage combination.

Designed for Electronic Power Applications

High-frequency transformers are widely used in switching-mode power supplies and other power conversion circuits because their magnetic design is intended for operation in high-frequency switching environments.

The EC28 can be considered for applications such as:

Switching Power Supplies

The EC28 can be integrated into PCB-based switching power supply designs where a compact transformer structure is required.

AC/DC Power Conversion

For electronic power supply systems that convert incoming electrical power into the voltage required by downstream circuits, the EC28 can be used as part of the transformer stage.

DC/DC Converter Systems

The compact PCB-mount structure makes the EC28 suitable for selected DC/DC power conversion designs.

Electronic Control Equipment

The transformer can also be integrated into electronic control boards and industrial electronic equipment where isolated or converted power is required, subject to the specific electrical design.

Power Adapters and Electronic Devices

Its compact construction makes the EC28 a potential fit for compact power modules, adapters and other electronic equipment.

Why Choose the EC28?

Compact PCB-Friendly Structure

The horizontal plug-in design provides a practical solution for PCB assembly while keeping the transformer relatively compact.

Flexible Electrical Configuration

The EC28 series offers multiple voltage and resistance configurations, allowing engineers to select or customize the transformer according to their circuit requirements.

Suitable for Compact Electronic Designs

With a maximum dimension of approximately 31.5 * 24.0 * 30.5 mm, the EC28 is designed around the space requirements of compact electronic equipment.

Multiple Application Possibilities

From switching power supplies and power conversion modules to electronic control equipment, the EC28 can be considered for a variety of power-electronic applications.

Suitable for OEM & Custom Projects

Transformer performance depends heavily on the actual circuit, winding configuration and operating conditions. For OEM projects, the transformer can be developed according to specific electrical and mechanical requirements.

From Standard Component to Project-Specific Solution

Every power supply design has different requirements.

Input and output voltage, turns ratio, winding arrangement, leakage inductance, DCR, PCB dimensions and operating conditions can all affect the final transformer design.

For this reason, we do not recommend selecting a high-frequency transformer based on model number alone.

If you are developing a new power supply or replacing an existing transformer, providing your circuit requirements, voltage specifications, PCB dimensions or existing transformer sample can help engineers determine whether the EC28 configuration is suitable for your application.

For custom projects, the transformer can be evaluated according to the actual electrical and mechanical requirements rather than simply matching the appearance of an existing component. This approach is also commonly used in custom high-frequency transformer development for SMPS, converters and other power-electronic systems.

EC28 High Frequency Transformer at a Glance

Model: EC28
Type: High Frequency Transformer
Structure: Horizontal Plug-in
Mounting: PCB Mount
Voltage Range: 6V–380V / 1.5V–60V
DCR: 0.6Ω–32Ω / 0.02Ω–1.8Ω @ 25°C
Leakage Inductance: 3μH–32μH @ 1kHz, 0.25V
Maximum Dimensions: 31.5 * 24.0 * 30.5 mm

Electrical specifications may vary according to winding configuration and customer requirements. Please contact us for the detailed specification of a particular EC28 configuration.

Looking for the Right High Frequency Transformer for Your Project?

Whether you are developing a new switching power supply, upgrading an existing PCB design or looking for a replacement transformer, the EC28 High Frequency Transformer provides a compact starting point for your power-electronics design.

Send us your voltage requirements, PCB dimensions, winding specifications or existing transformer sample. Our engineering team can evaluate the requirements and provide a suitable EC28 configuration or customized transformer solution.

EC28 — Compact Structure. Flexible Configuration. Designed for Your Power Electronics.